Merge branch 'print_simulation_view'

cura/CuraApplication.py

@@ -218,7 +218,7 @@ class CuraApplication(QtApplication):
             "CuraEngineBackend",
             "UserAgreement",
             "SolidView",
-            "LayerView",
+            "SimulationView",
             "STLReader",
             "SelectionTool",
             "CameraTool",
@@ -1386,7 +1386,7 @@ class CuraApplication(QtApplication):
 
             extension = os.path.splitext(filename)[1]
             if extension.lower() in self._non_sliceable_extensions:
-                self.getController().setActiveView("LayerView")
+                self.getController().setActiveView("SimulationView")
                 view = self.getController().getActiveView()
                 view.resetLayerData()
                 view.setLayer(9999999)

cura/Layer.py

@@ -47,12 +47,12 @@ class Layer:
 
         return result
 
-    def build(self, vertex_offset, index_offset, vertices, colors, line_dimensions, extruders, line_types, indices):
+    def build(self, vertex_offset, index_offset, vertices, colors, line_dimensions, feedrates, extruders, line_types, indices):
         result_vertex_offset = vertex_offset
         result_index_offset = index_offset
         self._element_count = 0
         for polygon in self._polygons:
-            polygon.build(result_vertex_offset, result_index_offset, vertices, colors, line_dimensions, extruders, line_types, indices)
+            polygon.build(result_vertex_offset, result_index_offset, vertices, colors, line_dimensions, feedrates, extruders, line_types, indices)
             result_vertex_offset += polygon.lineMeshVertexCount()
             result_index_offset += polygon.lineMeshElementCount()
             self._element_count += polygon.elementCount

cura/LayerDataBuilder.py

@@ -20,11 +20,11 @@ class LayerDataBuilder(MeshBuilder):
         if layer not in self._layers:
             self._layers[layer] = Layer(layer)
 
-    def addPolygon(self, layer, polygon_type, data, line_width):
+    def addPolygon(self, layer, polygon_type, data, line_width, line_thickness, line_feedrate):
         if layer not in self._layers:
             self.addLayer(layer)
 
-        p = LayerPolygon(self, polygon_type, data, line_width)
+        p = LayerPolygon(self, polygon_type, data, line_width, line_thickness, line_feedrate)
         self._layers[layer].polygons.append(p)
 
     def getLayer(self, layer):
@@ -64,13 +64,14 @@ class LayerDataBuilder(MeshBuilder):
         line_dimensions = numpy.empty((vertex_count, 2), numpy.float32)
         colors = numpy.empty((vertex_count, 4), numpy.float32)
         indices = numpy.empty((index_count, 2), numpy.int32)
+        feedrates = numpy.empty((vertex_count), numpy.float32)
         extruders = numpy.empty((vertex_count), numpy.float32)
         line_types = numpy.empty((vertex_count), numpy.float32)
 
         vertex_offset = 0
         index_offset = 0
         for layer, data in sorted(self._layers.items()):
-            ( vertex_offset, index_offset ) = data.build( vertex_offset, index_offset, vertices, colors, line_dimensions, extruders, line_types, indices)
+            ( vertex_offset, index_offset ) = data.build( vertex_offset, index_offset, vertices, colors, line_dimensions, feedrates, extruders, line_types, indices)
             self._element_counts[layer] = data.elementCount
 
         self.addVertices(vertices)
@@ -107,6 +108,11 @@ class LayerDataBuilder(MeshBuilder):
                 "value": line_types,
                 "opengl_name": "a_line_type",
                 "opengl_type": "float"
+                },
+            "feedrates": {
+                "value": feedrates,
+                "opengl_name": "a_feedrate",
+                "opengl_type": "float"
                 }
             }
 

cura/LayerPolygon.py

@@ -28,7 +28,8 @@ class LayerPolygon:
     #   \param data new_points
     #   \param line_widths array with line widths
     #   \param line_thicknesses: array with type as index and thickness as value
-    def __init__(self, extruder, line_types, data, line_widths, line_thicknesses):
+    #   \param line_feedrates array with line feedrates
+    def __init__(self, extruder, line_types, data, line_widths, line_thicknesses, line_feedrates):
         self._extruder = extruder
         self._types = line_types
         for i in range(len(self._types)):
@@ -37,6 +38,7 @@ class LayerPolygon:
         self._data = data
         self._line_widths = line_widths
         self._line_thicknesses = line_thicknesses
+        self._line_feedrates = line_feedrates
 
         self._vertex_begin = 0
         self._vertex_end = 0
@@ -84,10 +86,11 @@ class LayerPolygon:
     #   \param vertices : vertex numpy array to be filled
     #   \param colors : vertex numpy array to be filled
     #   \param line_dimensions : vertex numpy array to be filled
+    #   \param feedrates : vertex numpy array to be filled
     #   \param extruders : vertex numpy array to be filled
     #   \param line_types : vertex numpy array to be filled
     #   \param indices : index numpy array to be filled
-    def build(self, vertex_offset, index_offset, vertices, colors, line_dimensions, extruders, line_types, indices):
+    def build(self, vertex_offset, index_offset, vertices, colors, line_dimensions, feedrates, extruders, line_types, indices):
         if self._build_cache_line_mesh_mask is None or self._build_cache_needed_points is None:
             self.buildCache()
             
@@ -109,10 +112,13 @@ class LayerPolygon:
         # Create an array with colors for each vertex and remove the color data for the points that has been thrown away. 
         colors[self._vertex_begin:self._vertex_end, :] = numpy.tile(self._colors, (1, 2)).reshape((-1, 4))[needed_points_list.ravel()]
 
-        # Create an array with line widths for each vertex.
+        # Create an array with line widths and thicknesses for each vertex.
         line_dimensions[self._vertex_begin:self._vertex_end, 0] = numpy.tile(self._line_widths, (1, 2)).reshape((-1, 1))[needed_points_list.ravel()][:, 0]
         line_dimensions[self._vertex_begin:self._vertex_end, 1] = numpy.tile(self._line_thicknesses, (1, 2)).reshape((-1, 1))[needed_points_list.ravel()][:, 0]
 
+        # Create an array with feedrates for each line
+        feedrates[self._vertex_begin:self._vertex_end] = numpy.tile(self._line_feedrates, (1, 2)).reshape((-1, 1))[needed_points_list.ravel()][:, 0]
+
         extruders[self._vertex_begin:self._vertex_end] = self._extruder
 
         # Convert type per vertex to type per line
@@ -167,6 +173,14 @@ class LayerPolygon:
     def lineWidths(self):
         return self._line_widths
 
+    @property
+    def lineThicknesses(self):
+        return self._line_thicknesses
+
+    @property
+    def lineFeedrates(self):
+        return self._line_feedrates
+    
     @property
     def jumpMask(self):
         return self._jump_mask

plugins/CuraEngineBackend/Cura.proto

@@ -61,6 +61,8 @@ message Polygon {
     Type type = 1; // Type of move
     bytes points = 2; // The points of the polygon, or two points if only a line segment (Currently only line segments are used)
     float line_width = 3; // The width of the line being laid down
+    float line_thickness = 4; // The thickness of the line being laid down
+    float line_feedrate = 5; // The feedrate of the line being laid down
 }
 
 message LayerOptimized {
@@ -82,6 +84,8 @@ message PathSegment {
     bytes points = 3; // The points defining the line segments, bytes of float[2/3] array of length N+1
     bytes line_type = 4; // Type of line segment as an unsigned char array of length 1 or N, where N is the number of line segments in this path
     bytes line_width = 5; // The widths of the line segments as bytes of a float array of length 1 or N
+    bytes line_thickness = 6; // The thickness of the line segments as bytes of a float array of length 1 or N
+    bytes line_feedrate = 7; // The feedrate of the line segments as bytes of a float array of length 1 or N
 }
 
 

plugins/CuraEngineBackend/CuraEngineBackend.py

@@ -608,7 +608,7 @@ class CuraEngineBackend(QObject, Backend):
     def _onActiveViewChanged(self):
         if Application.getInstance().getController().getActiveView():
             view = Application.getInstance().getController().getActiveView()
-            if view.getPluginId() == "LayerView":  # If switching to layer view, we should process the layers if that hasn't been done yet.
+            if view.getPluginId() == "SimulationView":  # If switching to layer view, we should process the layers if that hasn't been done yet.
                 self._layer_view_active = True
                 # There is data and we're not slicing at the moment
                 # if we are slicing, there is no need to re-calculate the data as it will be invalid in a moment.

plugins/CuraEngineBackend/ProcessSlicedLayersJob.py

@@ -61,7 +61,7 @@ class ProcessSlicedLayersJob(Job):
 
     def run(self):
         start_time = time()
-        if Application.getInstance().getController().getActiveView().getPluginId() == "LayerView":
+        if Application.getInstance().getController().getActiveView().getPluginId() == "SimulationView":
             self._progress_message.show()
             Job.yieldThread()
             if self._abort_requested:
@@ -109,6 +109,7 @@ class ProcessSlicedLayersJob(Job):
             layer_data.addLayer(abs_layer_number)
             this_layer = layer_data.getLayer(abs_layer_number)
             layer_data.setLayerHeight(abs_layer_number, layer.height)
+            layer_data.setLayerThickness(abs_layer_number, layer.thickness)
 
             for p in range(layer.repeatedMessageCount("path_segment")):
                 polygon = layer.getRepeatedMessage("path_segment", p)
@@ -127,10 +128,11 @@ class ProcessSlicedLayersJob(Job):
                 line_widths = numpy.fromstring(polygon.line_width, dtype="f4")  # Convert bytearray to numpy array
                 line_widths = line_widths.reshape((-1,1))  # We get a linear list of pairs that make up the points, so make numpy interpret them correctly.
 
-                # In the future, line_thicknesses should be given by CuraEngine as well.
-                # Currently the infill layer thickness also translates to line width
-                line_thicknesses = numpy.zeros(line_widths.shape, dtype="f4")
-                line_thicknesses[:] = layer.thickness / 1000  # from micrometer to millimeter
+                line_thicknesses = numpy.fromstring(polygon.line_thickness, dtype="f4")  # Convert bytearray to numpy array
+                line_thicknesses = line_thicknesses.reshape((-1,1))  # We get a linear list of pairs that make up the points, so make numpy interpret them correctly.
+
+                line_feedrates = numpy.fromstring(polygon.line_feedrate, dtype="f4")  # Convert bytearray to numpy array
+                line_feedrates = line_feedrates.reshape((-1,1))  # We get a linear list of pairs that make up the points, so make numpy interpret them correctly.
 
                 # Create a new 3D-array, copy the 2D points over and insert the right height.
                 # This uses manual array creation + copy rather than numpy.insert since this is
@@ -145,7 +147,7 @@ class ProcessSlicedLayersJob(Job):
                     new_points[:, 1] = points[:, 2]
                     new_points[:, 2] = -points[:, 1]
 
-                this_poly = LayerPolygon.LayerPolygon(extruder, line_types, new_points, line_widths, line_thicknesses)
+                this_poly = LayerPolygon.LayerPolygon(extruder, line_types, new_points, line_widths, line_thicknesses, line_feedrates)
                 this_poly.buildCache()
 
                 this_layer.polygons.append(this_poly)
@@ -219,7 +221,7 @@ class ProcessSlicedLayersJob(Job):
             self._progress_message.setProgress(100)
 
         view = Application.getInstance().getController().getActiveView()
-        if view.getPluginId() == "LayerView":
+        if view.getPluginId() == "SimulationView":
             view.resetLayerData()
 
         if self._progress_message:
@@ -232,7 +234,7 @@ class ProcessSlicedLayersJob(Job):
 
     def _onActiveViewChanged(self):
         if self.isRunning():
-            if Application.getInstance().getController().getActiveView().getPluginId() == "LayerView":
+            if Application.getInstance().getController().getActiveView().getPluginId() == "SimulationView":
                 if not self._progress_message:
                     self._progress_message = Message(catalog.i18nc("@info:status", "Processing Layers"), 0, False, 0, catalog.i18nc("@info:title", "Information"))
                 if self._progress_message.getProgress() != 100:

plugins/GCodeReader/GCodeReader.py

@@ -40,7 +40,8 @@ class GCodeReader(MeshReader):
         self._extruder_number = 0
         self._clearValues()
         self._scene_node = None
-        self._position = namedtuple('Position', ['x', 'y', 'z', 'e'])
+        # X, Y, Z position, F feedrate and E extruder values are stored
+        self._position = namedtuple('Position', ['x', 'y', 'z', 'f', 'e'])
         self._is_layers_in_file = False  # Does the Gcode have the layers comment?
         self._extruder_offsets = {}  # Offsets for multi extruders. key is index, value is [x-offset, y-offset]
         self._current_layer_thickness = 0.2  # default
@@ -48,7 +49,9 @@ class GCodeReader(MeshReader):
         Preferences.getInstance().addPreference("gcodereader/show_caution", True)
 
     def _clearValues(self):
+        self._filament_diameter = 2.85
         self._extruder_number = 0
+        self._extrusion_length_offset = [0]
         self._layer_type = LayerPolygon.Inset0Type
         self._layer_number = 0
         self._previous_z = 0
@@ -97,7 +100,7 @@ class GCodeReader(MeshReader):
     def _createPolygon(self, layer_thickness, path, extruder_offsets):
         countvalid = 0
         for point in path:
-            if point[3] > 0:
+            if point[5] > 0:
                 countvalid += 1
                 if countvalid >= 2:
                     # we know what to do now, no need to count further
@@ -115,27 +118,56 @@ class GCodeReader(MeshReader):
         line_types = numpy.empty((count - 1, 1), numpy.int32)
         line_widths = numpy.empty((count - 1, 1), numpy.float32)
         line_thicknesses = numpy.empty((count - 1, 1), numpy.float32)
-        # TODO: need to calculate actual line width based on E values
+        line_feedrates = numpy.empty((count - 1, 1), numpy.float32)
         line_widths[:, 0] = 0.35  # Just a guess
         line_thicknesses[:, 0] = layer_thickness
         points = numpy.empty((count, 3), numpy.float32)
+        extrusion_values = numpy.empty((count, 1), numpy.float32)
         i = 0
         for point in path:
             points[i, :] = [point[0] + extruder_offsets[0], point[2], -point[1] - extruder_offsets[1]]
+            extrusion_values[i] = point[4]
             if i > 0:
-                line_types[i - 1] = point[3]
-                if point[3] in [LayerPolygon.MoveCombingType, LayerPolygon.MoveRetractionType]:
+                line_feedrates[i - 1] = point[3]
+                line_types[i - 1] = point[5]
+                if point[5] in [LayerPolygon.MoveCombingType, LayerPolygon.MoveRetractionType]:
                     line_widths[i - 1] = 0.1
+                    line_thicknesses[i - 1] = 0.0 # Travels are set as zero thickness lines
+                else:
+                    line_widths[i - 1] = self._calculateLineWidth(points[i], points[i-1], extrusion_values[i], extrusion_values[i-1], layer_thickness)
             i += 1
 
-        this_poly = LayerPolygon(self._extruder_number, line_types, points, line_widths, line_thicknesses)
+        this_poly = LayerPolygon(self._extruder_number, line_types, points, line_widths, line_thicknesses, line_feedrates)
         this_poly.buildCache()
 
         this_layer.polygons.append(this_poly)
         return True
 
+    def _calculateLineWidth(self, current_point, previous_point, current_extrusion, previous_extrusion, layer_thickness):
+        # Area of the filament
+        Af = (self._filament_diameter / 2) ** 2 * numpy.pi
+        # Length of the extruded filament
+        de = current_extrusion - previous_extrusion
+        # Volumne of the extruded filament
+        dVe = de * Af
+        # Length of the printed line
+        dX = numpy.sqrt((current_point[0] - previous_point[0])**2 + (current_point[2] - previous_point[2])**2)
+        # When the extruder recovers from a retraction, we get zero distance
+        if dX == 0:
+            return 0.1
+        # Area of the printed line. This area is a rectangle
+        Ae = dVe / dX
+        # This area is a rectangle with area equal to layer_thickness * layer_width
+        line_width = Ae / layer_thickness
+
+        # A threshold is set to avoid weird paths in the GCode
+        if line_width > 1.2:
+            return 0.35
+        return line_width
+
     def _gCode0(self, position, params, path):
-        x, y, z, e = position
+
+        x, y, z, f, e = position
         if self._is_absolute_positioning:
             x = params.x if params.x is not None else x
             y = params.y if params.y is not None else y
@@ -145,22 +177,24 @@ class GCodeReader(MeshReader):
             y += params.y if params.y is not None else 0
             z += params.z if params.z is not None else 0
         
+        f = params.f if params.f is not None else f
+
         if params.e is not None:
             new_extrusion_value = params.e if self._is_absolute_positioning else e[self._extruder_number] + params.e
             if new_extrusion_value > e[self._extruder_number]:
-                path.append([x, y, z, self._layer_type])  # extrusion
+                path.append([x, y, z, f, params.e + self._extrusion_length_offset[self._extruder_number], self._layer_type])  # extrusion
             else:
-                path.append([x, y, z, LayerPolygon.MoveRetractionType])  # retraction
+                path.append([x, y, z, f, params.e + self._extrusion_length_offset[self._extruder_number], LayerPolygon.MoveRetractionType])  # retraction
             e[self._extruder_number] = new_extrusion_value
 
             # Only when extruding we can determine the latest known "layer height" which is the difference in height between extrusions
             # Also, 1.5 is a heuristic for any priming or whatsoever, we skip those.
             if z > self._previous_z and (z - self._previous_z < 1.5):
-                self._current_layer_thickness = z - self._previous_z + 0.05  # allow a tiny overlap
+                self._current_layer_thickness = z - self._previous_z # allow a tiny overlap
                 self._previous_z = z
         else:
-            path.append([x, y, z, LayerPolygon.MoveCombingType])
-        return self._position(x, y, z, e)
+            path.append([x, y, z, f, e[self._extruder_number] + self._extrusion_length_offset[self._extruder_number], LayerPolygon.MoveCombingType])
+        return self._position(x, y, z, f, e)
 
     # G0 and G1 should be handled exactly the same.
     _gCode1 = _gCode0
@@ -171,6 +205,7 @@ class GCodeReader(MeshReader):
             params.x if params.x is not None else position.x,
             params.y if params.y is not None else position.y,
             0,
+            position.f,
             position.e)
 
     ##  Set the absolute positioning
@@ -187,11 +222,14 @@ class GCodeReader(MeshReader):
     #   For example: G92 X10 will set the X to 10 without any physical motion.
     def _gCode92(self, position, params, path):
         if params.e is not None:
+            # Sometimes a G92 E0 is introduced in the middle of the GCode so we need to keep those offsets for calculate the line_width
+            self._extrusion_length_offset[self._extruder_number] += position.e[self._extruder_number] - params.e
             position.e[self._extruder_number] = params.e
         return self._position(
             params.x if params.x is not None else position.x,
             params.y if params.y is not None else position.y,
             params.z if params.z is not None else position.z,
+            params.f if params.f is not None else position.f,
             position.e)
 
     def _processGCode(self, G, line, position, path):
@@ -199,7 +237,7 @@ class GCodeReader(MeshReader):
         line = line.split(";", 1)[0]  # Remove comments (if any)
         if func is not None:
             s = line.upper().split(" ")
-            x, y, z, e = None, None, None, None
+            x, y, z, f, e = None, None, None, None, None
             for item in s[1:]:
                 if len(item) <= 1:
                     continue
@@ -211,17 +249,20 @@ class GCodeReader(MeshReader):
                     y = float(item[1:])
                 if item[0] == "Z":
                     z = float(item[1:])
+                if item[0] == "F":
+                    f = float(item[1:]) / 60
                 if item[0] == "E":
                     e = float(item[1:])
             if self._is_absolute_positioning and ((x is not None and x < 0) or (y is not None and y < 0)):
                 self._center_is_zero = True
-            params = self._position(x, y, z, e)
+            params = self._position(x, y, z, f, e)
             return func(position, params, path)
         return position
 
     def _processTCode(self, T, line, position, path):
         self._extruder_number = T
         if self._extruder_number + 1 > len(position.e):
+            self._extrusion_length_offset.extend([0] * (self._extruder_number - len(position.e) + 1))
             position.e.extend([0] * (self._extruder_number - len(position.e) + 1))
         return position
 
@@ -240,6 +281,8 @@ class GCodeReader(MeshReader):
     def read(self, file_name):
         Logger.log("d", "Preparing to load %s" % file_name)
         self._cancelled = False
+        # We obtain the filament diameter from the selected printer to calculate line widths
+        self._filament_diameter = Application.getInstance().getGlobalContainerStack().getProperty("material_diameter", "value")
 
         scene_node = SceneNode()
         # Override getBoundingBox function of the sceneNode, as this node should return a bounding box, but there is no
@@ -277,7 +320,7 @@ class GCodeReader(MeshReader):
 
             Logger.log("d", "Parsing %s..." % file_name)
 
-            current_position = self._position(0, 0, 0, [0])
+            current_position = self._position(0, 0, 0, 0, [0])
             current_path = []
 
             for line in file:
@@ -310,6 +353,7 @@ class GCodeReader(MeshReader):
                     else:
                         Logger.log("w", "Encountered a unknown type (%s) while parsing g-code.", type)
 
+                # When the layer change is reached, the polygon is computed so we have just one layer per layer per extruder
                 if self._is_layers_in_file and line[:len(self._layer_keyword)] == self._layer_keyword:
                     try:
                         layer_number = int(line[len(self._layer_keyword):])
@@ -325,17 +369,12 @@ class GCodeReader(MeshReader):
 
                 G = self._getInt(line, "G")
                 if G is not None:
+                    # When find a movement, the new posistion is calculated and added to the current_path, but
+                    # don't need to create a polygon until the end of the layer
                     current_position = self._processGCode(G, line, current_position, current_path)
-
-                    # < 2 is a heuristic for a movement only, that should not be counted as a layer
-                    if current_position.z > last_z and abs(current_position.z - last_z) < 2:
-                        if self._createPolygon(self._current_layer_thickness, current_path, self._extruder_offsets.get(self._extruder_number, [0, 0])):
-                            current_path.clear()
-                            if not self._is_layers_in_file:
-                                self._layer_number += 1
-
                     continue
 
+                # When changing the extruder, the polygon with the stored paths is computed
                 if line.startswith("T"):
                     T = self._getInt(line, "T")
                     if T is not None:
@@ -344,8 +383,8 @@ class GCodeReader(MeshReader):
 
                         current_position = self._processTCode(T, line, current_position, current_path)
 
-            # "Flush" leftovers
-            if not self._is_layers_in_file and len(current_path) > 1:
+            # "Flush" leftovers. Last layer paths are still stored
+            if len(current_path) > 1:
                 if self._createPolygon(self._current_layer_thickness, current_path, self._extruder_offsets.get(self._extruder_number, [0, 0])):
                     self._layer_number += 1
                     current_path.clear()

plugins/LayerView/LayerPass.py

@@ -1,113 +0,0 @@
-# Copyright (c) 2016 Ultimaker B.V.
-# Cura is released under the terms of the LGPLv3 or higher.
-
-from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
-from UM.Resources import Resources
-from UM.Scene.SceneNode import SceneNode
-from UM.Scene.ToolHandle import ToolHandle
-from UM.Application import Application
-from UM.PluginRegistry import PluginRegistry
-
-from UM.View.RenderPass import RenderPass
-from UM.View.RenderBatch import RenderBatch
-from UM.View.GL.OpenGL import OpenGL
-
-from cura.Settings.ExtruderManager import ExtruderManager
-
-
-import os.path
-
-## RenderPass used to display g-code paths.
-class LayerPass(RenderPass):
-    def __init__(self, width, height):
-        super().__init__("layerview", width, height)
-
-        self._layer_shader = None
-        self._tool_handle_shader = None
-        self._gl = OpenGL.getInstance().getBindingsObject()
-        self._scene = Application.getInstance().getController().getScene()
-        self._extruder_manager = ExtruderManager.getInstance()
-
-        self._layer_view = None
-        self._compatibility_mode = None
-
-    def setLayerView(self, layerview):
-        self._layer_view = layerview
-        self._compatibility_mode = layerview.getCompatibilityMode()
-
-    def render(self):
-        if not self._layer_shader:
-            if self._compatibility_mode:
-                shader_filename = "layers.shader"
-            else:
-                shader_filename = "layers3d.shader"
-            self._layer_shader = OpenGL.getInstance().createShaderProgram(os.path.join(PluginRegistry.getInstance().getPluginPath("LayerView"), shader_filename))
-        # Use extruder 0 if the extruder manager reports extruder index -1 (for single extrusion printers)
-        self._layer_shader.setUniformValue("u_active_extruder", float(max(0, self._extruder_manager.activeExtruderIndex)))
-        if self._layer_view:
-            self._layer_shader.setUniformValue("u_layer_view_type", self._layer_view.getLayerViewType())
-            self._layer_shader.setUniformValue("u_extruder_opacity", self._layer_view.getExtruderOpacities())
-            self._layer_shader.setUniformValue("u_show_travel_moves", self._layer_view.getShowTravelMoves())
-            self._layer_shader.setUniformValue("u_show_helpers", self._layer_view.getShowHelpers())
-            self._layer_shader.setUniformValue("u_show_skin", self._layer_view.getShowSkin())
-            self._layer_shader.setUniformValue("u_show_infill", self._layer_view.getShowInfill())
-        else:
-            #defaults
-            self._layer_shader.setUniformValue("u_layer_view_type", 1)
-            self._layer_shader.setUniformValue("u_extruder_opacity", [1, 1, 1, 1])
-            self._layer_shader.setUniformValue("u_show_travel_moves", 0)
-            self._layer_shader.setUniformValue("u_show_helpers", 1)
-            self._layer_shader.setUniformValue("u_show_skin", 1)
-            self._layer_shader.setUniformValue("u_show_infill", 1)
-
-        if not self._tool_handle_shader:
-            self._tool_handle_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "toolhandle.shader"))
-
-        self.bind()
-
-        tool_handle_batch = RenderBatch(self._tool_handle_shader, type = RenderBatch.RenderType.Overlay)
-
-        for node in DepthFirstIterator(self._scene.getRoot()):
-
-            if isinstance(node, ToolHandle):
-                tool_handle_batch.addItem(node.getWorldTransformation(), mesh = node.getSolidMesh())
-
-            elif isinstance(node, SceneNode) and (node.getMeshData() or node.callDecoration("isBlockSlicing")) and node.isVisible():
-                layer_data = node.callDecoration("getLayerData")
-                if not layer_data:
-                    continue
-
-                # Render all layers below a certain number as line mesh instead of vertices.
-                if self._layer_view._current_layer_num > -1 and ((not self._layer_view._only_show_top_layers) or (not self._layer_view.getCompatibilityMode())):
-                    start = 0
-                    end = 0
-                    element_counts = layer_data.getElementCounts()
-                    for layer in sorted(element_counts.keys()):
-                        if layer > self._layer_view._current_layer_num:
-                            break
-                        if self._layer_view._minimum_layer_num > layer:
-                            start += element_counts[layer]
-                        end += element_counts[layer]
-
-                    # This uses glDrawRangeElements internally to only draw a certain range of lines.
-                    batch = RenderBatch(self._layer_shader, type = RenderBatch.RenderType.Solid, mode = RenderBatch.RenderMode.Lines, range = (start, end))
-                    batch.addItem(node.getWorldTransformation(), layer_data)
-                    batch.render(self._scene.getActiveCamera())
-
-                # Create a new batch that is not range-limited
-                batch = RenderBatch(self._layer_shader, type = RenderBatch.RenderType.Solid)
-
-                if self._layer_view.getCurrentLayerMesh():
-                    batch.addItem(node.getWorldTransformation(), self._layer_view.getCurrentLayerMesh())
-
-                if self._layer_view.getCurrentLayerJumps():
-                    batch.addItem(node.getWorldTransformation(), self._layer_view.getCurrentLayerJumps())
-
-                if len(batch.items) > 0:
-                    batch.render(self._scene.getActiveCamera())
-
-        # Render toolhandles on top of the layerview
-        if len(tool_handle_batch.items) > 0:
-            tool_handle_batch.render(self._scene.getActiveCamera())
-
-        self.release()

plugins/LayerView/LayerView.qml

@@ -1,388 +0,0 @@
-// Copyright (c) 2017 Ultimaker B.V.
-// Cura is released under the terms of the LGPLv3 or higher.
-
-import QtQuick 2.4
-import QtQuick.Controls 1.2
-import QtQuick.Layouts 1.1
-import QtQuick.Controls.Styles 1.1
-
-import UM 1.0 as UM
-import Cura 1.0 as Cura
-
-Item
-{
-    id: base
-    width: {
-        if (UM.LayerView.compatibilityMode) {
-            return UM.Theme.getSize("layerview_menu_size_compatibility").width;
-        } else {
-            return UM.Theme.getSize("layerview_menu_size").width;
-        }
-    }
-    height: {
-        if (UM.LayerView.compatibilityMode) {
-            return UM.Theme.getSize("layerview_menu_size_compatibility").height;
-        } else if (UM.Preferences.getValue("layerview/layer_view_type") == 0) {
-            return UM.Theme.getSize("layerview_menu_size_material_color_mode").height + UM.LayerView.extruderCount * (UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("layerview_row_spacing").height)
-        } else {
-            return UM.Theme.getSize("layerview_menu_size").height + UM.LayerView.extruderCount * (UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("layerview_row_spacing").height)
-        }
-    }
-
-    property var buttonTarget: {
-        if(parent != null)
-        {
-            var force_binding = parent.y; // ensure this gets reevaluated when the panel moves
-            return base.mapFromItem(parent.parent, parent.buttonTarget.x, parent.buttonTarget.y)
-        }
-        return Qt.point(0,0)
-    }
-
-    visible: parent != null ? !parent.parent.monitoringPrint: true
-
-    UM.PointingRectangle {
-        id: layerViewMenu
-        anchors.right: parent.right
-        anchors.top: parent.top
-        width: parent.width
-        height: parent.height
-        z: slider.z - 1
-        color: UM.Theme.getColor("tool_panel_background")
-        borderWidth: UM.Theme.getSize("default_lining").width
-        borderColor: UM.Theme.getColor("lining")
-        arrowSize: 0 // hide arrow until weird issue with first time rendering is fixed
-
-        ColumnLayout {
-            id: view_settings
-
-            property var extruder_opacities: UM.Preferences.getValue("layerview/extruder_opacities").split("|")
-            property bool show_travel_moves: UM.Preferences.getValue("layerview/show_travel_moves")
-            property bool show_helpers: UM.Preferences.getValue("layerview/show_helpers")
-            property bool show_skin: UM.Preferences.getValue("layerview/show_skin")
-            property bool show_infill: UM.Preferences.getValue("layerview/show_infill")
-            // if we are in compatibility mode, we only show the "line type"
-            property bool show_legend: UM.LayerView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type") == 1
-            property bool only_show_top_layers: UM.Preferences.getValue("view/only_show_top_layers")
-            property int top_layer_count: UM.Preferences.getValue("view/top_layer_count")
-
-            anchors.top: parent.top
-            anchors.topMargin: UM.Theme.getSize("default_margin").height
-            anchors.left: parent.left
-            anchors.leftMargin: UM.Theme.getSize("default_margin").width
-            spacing: UM.Theme.getSize("layerview_row_spacing").height
-            anchors.right: parent.right
-            anchors.rightMargin: UM.Theme.getSize("default_margin").width
-
-            Label
-            {
-                id: layerViewTypesLabel
-                anchors.left: parent.left
-                text: catalog.i18nc("@label","Color scheme")
-                font: UM.Theme.getFont("default");
-                visible: !UM.LayerView.compatibilityMode
-                Layout.fillWidth: true
-                color: UM.Theme.getColor("setting_control_text")
-            }
-
-            ListModel  // matches LayerView.py
-            {
-                id: layerViewTypes
-            }
-
-            Component.onCompleted:
-            {
-                layerViewTypes.append({
-                    text: catalog.i18nc("@label:listbox", "Material Color"),
-                    type_id: 0
-                })
-                layerViewTypes.append({
-                    text: catalog.i18nc("@label:listbox", "Line Type"),
-                    type_id: 1  // these ids match the switching in the shader
-                })
-            }
-
-            ComboBox
-            {
-                id: layerTypeCombobox
-                anchors.left: parent.left
-                Layout.fillWidth: true
-                Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
-                model: layerViewTypes
-                visible: !UM.LayerView.compatibilityMode
-                style: UM.Theme.styles.combobox
-                anchors.right: parent.right
-                anchors.rightMargin: 10 * screenScaleFactor
-
-                onActivated:
-                {
-                    UM.Preferences.setValue("layerview/layer_view_type", index);
-                }
-
-                Component.onCompleted:
-                {
-                    currentIndex = UM.LayerView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type");
-                    updateLegends(currentIndex);
-                }
-
-                function updateLegends(type_id)
-                {
-                    // update visibility of legends
-                    view_settings.show_legend = UM.LayerView.compatibilityMode || (type_id == 1);
-                }
-
-            }
-
-            Label
-            {
-                id: compatibilityModeLabel
-                anchors.left: parent.left
-                text: catalog.i18nc("@label","Compatibility Mode")
-                font: UM.Theme.getFont("default")
-                color: UM.Theme.getColor("text")
-                visible: UM.LayerView.compatibilityMode
-                Layout.fillWidth: true
-                Layout.preferredHeight: UM.Theme.getSize("layerview_row").height
-                Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
-            }
-
-            Label
-            {
-                id: space2Label
-                anchors.left: parent.left
-                text: " "
-                font.pointSize: 0.5
-            }
-
-            Connections {
-                target: UM.Preferences
-                onPreferenceChanged:
-                {
-                    layerTypeCombobox.currentIndex = UM.LayerView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type");
-                    layerTypeCombobox.updateLegends(layerTypeCombobox.currentIndex);
-                    view_settings.extruder_opacities = UM.Preferences.getValue("layerview/extruder_opacities").split("|");
-                    view_settings.show_travel_moves = UM.Preferences.getValue("layerview/show_travel_moves");
-                    view_settings.show_helpers = UM.Preferences.getValue("layerview/show_helpers");
-                    view_settings.show_skin = UM.Preferences.getValue("layerview/show_skin");
-                    view_settings.show_infill = UM.Preferences.getValue("layerview/show_infill");
-                    view_settings.only_show_top_layers = UM.Preferences.getValue("view/only_show_top_layers");
-                    view_settings.top_layer_count = UM.Preferences.getValue("view/top_layer_count");
-                }
-            }
-
-            Repeater {
-                model: Cura.ExtrudersModel{}
-                CheckBox {
-                    id: extrudersModelCheckBox
-                    checked: view_settings.extruder_opacities[index] > 0.5 || view_settings.extruder_opacities[index] == undefined || view_settings.extruder_opacities[index] == ""
-                    onClicked: {
-                        view_settings.extruder_opacities[index] = checked ? 1.0 : 0.0
-                        UM.Preferences.setValue("layerview/extruder_opacities", view_settings.extruder_opacities.join("|"));
-                    }
-                    visible: !UM.LayerView.compatibilityMode
-                    enabled: index + 1 <= 4
-                    Rectangle {
-                        anchors.verticalCenter: parent.verticalCenter
-                        anchors.right: extrudersModelCheckBox.right
-                        anchors.rightMargin: UM.Theme.getSize("default_margin").width
-                        width: UM.Theme.getSize("layerview_legend_size").width
-                        height: UM.Theme.getSize("layerview_legend_size").height
-                        color: model.color
-                        radius: width / 2
-                        border.width: UM.Theme.getSize("default_lining").width
-                        border.color: UM.Theme.getColor("lining")
-                        visible: !view_settings.show_legend
-                    }
-                    Layout.fillWidth: true
-                    Layout.preferredHeight: UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("default_lining").height
-                    Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
-                    style: UM.Theme.styles.checkbox
-                    Label
-                    {
-                        text: model.name
-                        elide: Text.ElideRight
-                        color: UM.Theme.getColor("setting_control_text")
-                        font: UM.Theme.getFont("default")
-                        anchors.verticalCenter: parent.verticalCenter
-                        anchors.left: extrudersModelCheckBox.left;
-                        anchors.right: extrudersModelCheckBox.right;
-                        anchors.leftMargin: UM.Theme.getSize("checkbox").width + UM.Theme.getSize("default_margin").width /2
-                        anchors.rightMargin: UM.Theme.getSize("default_margin").width * 2
-                    }
-                }
-            }
-
-            Repeater {
-                model: ListModel {
-                    id: typesLegenModel
-                    Component.onCompleted:
-                    {
-                        typesLegenModel.append({
-                            label: catalog.i18nc("@label", "Show Travels"),
-                            initialValue: view_settings.show_travel_moves,
-                            preference: "layerview/show_travel_moves",
-                            colorId:  "layerview_move_combing"
-                        });
-                        typesLegenModel.append({
-                            label: catalog.i18nc("@label", "Show Helpers"),
-                            initialValue: view_settings.show_helpers,
-                            preference: "layerview/show_helpers",
-                            colorId:  "layerview_support"
-                        });
-                        typesLegenModel.append({
-                            label: catalog.i18nc("@label", "Show Shell"),
-                            initialValue: view_settings.show_skin,
-                            preference: "layerview/show_skin",
-                            colorId:  "layerview_inset_0"
-                        });
-                        typesLegenModel.append({
-                            label: catalog.i18nc("@label", "Show Infill"),
-                            initialValue: view_settings.show_infill,
-                            preference: "layerview/show_infill",
-                            colorId:  "layerview_infill"
-                        });
-                    }
-                }
-
-                CheckBox {
-                    id: legendModelCheckBox
-                    checked: model.initialValue
-                    onClicked: {
-                        UM.Preferences.setValue(model.preference, checked);
-                    }
-                    Rectangle {
-                        anchors.verticalCenter: parent.verticalCenter
-                        anchors.right: legendModelCheckBox.right
-                        anchors.rightMargin: UM.Theme.getSize("default_margin").width
-                        width: UM.Theme.getSize("layerview_legend_size").width
-                        height: UM.Theme.getSize("layerview_legend_size").height
-                        color: UM.Theme.getColor(model.colorId)
-                        border.width: UM.Theme.getSize("default_lining").width
-                        border.color: UM.Theme.getColor("lining")
-                        visible: view_settings.show_legend
-                    }
-                    Layout.fillWidth: true
-                    Layout.preferredHeight: UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("default_lining").height
-                    Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
-                    style: UM.Theme.styles.checkbox
-                    Label
-                    {
-                        text: label
-                        font: UM.Theme.getFont("default")
-                        elide: Text.ElideRight
-                        color: UM.Theme.getColor("setting_control_text")
-                        anchors.verticalCenter: parent.verticalCenter
-                        anchors.left: legendModelCheckBox.left;
-                        anchors.right: legendModelCheckBox.right;
-                        anchors.leftMargin: UM.Theme.getSize("checkbox").width + UM.Theme.getSize("default_margin").width /2
-                        anchors.rightMargin: UM.Theme.getSize("default_margin").width * 2
-                    }
-                }
-            }
-
-            CheckBox {
-                checked: view_settings.only_show_top_layers
-                onClicked: {
-                    UM.Preferences.setValue("view/only_show_top_layers", checked ? 1.0 : 0.0);
-                }
-                text: catalog.i18nc("@label", "Only Show Top Layers")
-                visible: UM.LayerView.compatibilityMode
-                style: UM.Theme.styles.checkbox
-            }
-            CheckBox {
-                checked: view_settings.top_layer_count == 5
-                onClicked: {
-                    UM.Preferences.setValue("view/top_layer_count", checked ? 5 : 1);
-                }
-                text: catalog.i18nc("@label", "Show 5 Detailed Layers On Top")
-                visible: UM.LayerView.compatibilityMode
-                style: UM.Theme.styles.checkbox
-            }
-
-            Repeater {
-                model: ListModel {
-                    id: typesLegenModelNoCheck
-                    Component.onCompleted:
-                    {
-                        typesLegenModelNoCheck.append({
-                            label: catalog.i18nc("@label", "Top / Bottom"),
-                            colorId: "layerview_skin",
-                        });
-                        typesLegenModelNoCheck.append({
-                            label: catalog.i18nc("@label", "Inner Wall"),
-                            colorId: "layerview_inset_x",
-                        });
-                    }
-                }
-
-                Label {
-                    text: label
-                    visible: view_settings.show_legend
-                    id: typesLegendModelLabel
-                    Rectangle {
-                        anchors.verticalCenter: parent.verticalCenter
-                        anchors.right: typesLegendModelLabel.right
-                        anchors.rightMargin: UM.Theme.getSize("default_margin").width
-                        width: UM.Theme.getSize("layerview_legend_size").width
-                        height: UM.Theme.getSize("layerview_legend_size").height
-                        color: UM.Theme.getColor(model.colorId)
-                        border.width: UM.Theme.getSize("default_lining").width
-                        border.color: UM.Theme.getColor("lining")
-                        visible: view_settings.show_legend
-                    }
-                    Layout.fillWidth: true
-                    Layout.preferredHeight: UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("default_lining").height
-                    Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
-                    color: UM.Theme.getColor("setting_control_text")
-                    font: UM.Theme.getFont("default")
-                }
-            }
-        }
-
-        LayerSlider {
-            id: slider
-
-            width: UM.Theme.getSize("slider_handle").width
-            height: UM.Theme.getSize("layerview_menu_size").height
-
-            anchors {
-                top: parent.bottom
-                topMargin: UM.Theme.getSize("slider_layerview_margin").height
-                right: layerViewMenu.right
-                rightMargin: UM.Theme.getSize("slider_layerview_margin").width
-            }
-
-            // custom properties
-            upperValue: UM.LayerView.currentLayer
-            lowerValue: UM.LayerView.minimumLayer
-            maximumValue: UM.LayerView.numLayers
-            handleSize: UM.Theme.getSize("slider_handle").width
-            trackThickness: UM.Theme.getSize("slider_groove").width
-            trackColor: UM.Theme.getColor("slider_groove")
-            trackBorderColor: UM.Theme.getColor("slider_groove_border")
-            upperHandleColor: UM.Theme.getColor("slider_handle")
-            lowerHandleColor: UM.Theme.getColor("slider_handle")
-            rangeHandleColor: UM.Theme.getColor("slider_groove_fill")
-            handleLabelWidth: UM.Theme.getSize("slider_layerview_background").width
-            layersVisible: UM.LayerView.layerActivity && CuraApplication.platformActivity ? true : false
-
-            // update values when layer data changes
-            Connections {
-                target: UM.LayerView
-                onMaxLayersChanged: slider.setUpperValue(UM.LayerView.currentLayer)
-                onMinimumLayerChanged: slider.setLowerValue(UM.LayerView.minimumLayer)
-                onCurrentLayerChanged: slider.setUpperValue(UM.LayerView.currentLayer)
-            }
-
-            // make sure the slider handlers show the correct value after switching views
-            Component.onCompleted: {
-                slider.setLowerValue(UM.LayerView.minimumLayer)
-                slider.setUpperValue(UM.LayerView.currentLayer)
-            }
-        }
-    }
-
-    FontMetrics {
-        id: fontMetrics
-        font: UM.Theme.getFont("default")
-    }
-}

plugins/LayerView/LayerViewProxy.py

@@ -1,151 +0,0 @@
-from PyQt5.QtCore import QObject, pyqtSignal, pyqtProperty
-from UM.FlameProfiler import pyqtSlot
-from UM.Application import Application
-
-import LayerView
-
-
-class LayerViewProxy(QObject):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self._current_layer = 0
-        self._controller = Application.getInstance().getController()
-        self._controller.activeViewChanged.connect(self._onActiveViewChanged)
-        self._onActiveViewChanged()
-    
-    currentLayerChanged = pyqtSignal()
-    maxLayersChanged = pyqtSignal()
-    activityChanged = pyqtSignal()
-    globalStackChanged = pyqtSignal()
-    preferencesChanged = pyqtSignal()
-    busyChanged = pyqtSignal()
-
-    @pyqtProperty(bool, notify=activityChanged)
-    def layerActivity(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getActivity()
-
-    @pyqtProperty(int, notify=maxLayersChanged)
-    def numLayers(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getMaxLayers()
-
-    @pyqtProperty(int, notify=currentLayerChanged)
-    def currentLayer(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getCurrentLayer()
-
-    @pyqtProperty(int, notify=currentLayerChanged)
-    def minimumLayer(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getMinimumLayer()
-
-    @pyqtProperty(bool, notify=busyChanged)
-    def busy(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.isBusy()
-
-        return False
-
-    @pyqtProperty(bool, notify=preferencesChanged)
-    def compatibilityMode(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getCompatibilityMode()
-        return False
-
-    @pyqtSlot(int)
-    def setCurrentLayer(self, layer_num):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setLayer(layer_num)
-
-    @pyqtSlot(int)
-    def setMinimumLayer(self, layer_num):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setMinimumLayer(layer_num)
-
-    @pyqtSlot(int)
-    def setLayerViewType(self, layer_view_type):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setLayerViewType(layer_view_type)
-
-    @pyqtSlot(result=int)
-    def getLayerViewType(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getLayerViewType()
-        return 0
-
-    # Opacity 0..1
-    @pyqtSlot(int, float)
-    def setExtruderOpacity(self, extruder_nr, opacity):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setExtruderOpacity(extruder_nr, opacity)
-
-    @pyqtSlot(int)
-    def setShowTravelMoves(self, show):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setShowTravelMoves(show)
-
-    @pyqtSlot(int)
-    def setShowHelpers(self, show):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setShowHelpers(show)
-
-    @pyqtSlot(int)
-    def setShowSkin(self, show):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setShowSkin(show)
-
-    @pyqtSlot(int)
-    def setShowInfill(self, show):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.setShowInfill(show)
-
-    @pyqtProperty(int, notify=globalStackChanged)
-    def extruderCount(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            return active_view.getExtruderCount()
-        return 0
-
-    def _layerActivityChanged(self):
-        self.activityChanged.emit()
-            
-    def _onLayerChanged(self):
-        self.currentLayerChanged.emit()
-        self._layerActivityChanged()
-
-    def _onMaxLayersChanged(self):
-        self.maxLayersChanged.emit()
-
-    def _onBusyChanged(self):
-        self.busyChanged.emit()
-
-    def _onGlobalStackChanged(self):
-        self.globalStackChanged.emit()
-
-    def _onPreferencesChanged(self):
-        self.preferencesChanged.emit()
-
-    def _onActiveViewChanged(self):
-        active_view = self._controller.getActiveView()
-        if type(active_view) == LayerView.LayerView.LayerView:
-            active_view.currentLayerNumChanged.connect(self._onLayerChanged)
-            active_view.maxLayersChanged.connect(self._onMaxLayersChanged)
-            active_view.busyChanged.connect(self._onBusyChanged)
-            active_view.globalStackChanged.connect(self._onGlobalStackChanged)
-            active_view.preferencesChanged.connect(self._onPreferencesChanged)

plugins/LayerView/__init__.py

@@ -1,25 +0,0 @@
-# Copyright (c) 2015 Ultimaker B.V.
-# Cura is released under the terms of the LGPLv3 or higher.
-
-from . import LayerView, LayerViewProxy
-from PyQt5.QtQml import qmlRegisterType, qmlRegisterSingletonType
-
-from UM.i18n import i18nCatalog
-catalog = i18nCatalog("cura")
-
-def getMetaData():
-    return {
-        "view": {
-            "name": catalog.i18nc("@item:inlistbox", "Layer view"),
-            "view_panel": "LayerView.qml",
-            "weight": 2
-        }
-    }
-
-def createLayerViewProxy(engine, script_engine):
-    return LayerViewProxy.LayerViewProxy()
-
-def register(app):
-    layer_view = LayerView.LayerView()
-    qmlRegisterSingletonType(LayerViewProxy.LayerViewProxy, "UM", 1, 0, "LayerView", layer_view.getProxy)
-    return { "view": LayerView.LayerView() }

plugins/SimulationView/LayerSlider.qml

@@ -19,6 +19,7 @@ Item {
     property color upperHandleColor: "black"
     property color lowerHandleColor: "black"
     property color rangeHandleColor: "black"
+    property color handleActiveColor: "white"
     property real handleLabelWidth: width
     property var activeHandle: upperHandle
 
@@ -100,8 +101,8 @@ Item {
             var lowerValue = sliderRoot.getLowerValueFromSliderHandle()
 
             // set both values after moving the handle position
-            UM.LayerView.setCurrentLayer(upperValue)
-            UM.LayerView.setMinimumLayer(lowerValue)
+            UM.SimulationView.setCurrentLayer(upperValue)
+            UM.SimulationView.setMinimumLayer(lowerValue)
         }
 
         function setValue (value) {
@@ -109,8 +110,8 @@ Item {
             value = Math.min(value, sliderRoot.maximumValue)
             value = Math.max(value, sliderRoot.minimumValue + range)
 
-            UM.LayerView.setCurrentLayer(value)
-            UM.LayerView.setMinimumLayer(value - range)
+            UM.SimulationView.setCurrentLayer(value)
+            UM.SimulationView.setMinimumLayer(value - range)
         }
 
         Rectangle {
@@ -134,7 +135,7 @@ Item {
             onPressed: sliderRoot.setActiveHandle(rangeHandle)
         }
 
-        LayerSliderLabel {
+        SimulationSliderLabel {
             id: rangleHandleLabel
 
             height: sliderRoot.handleSize + UM.Theme.getSize("default_margin").height
@@ -146,7 +147,7 @@ Item {
             // custom properties
             maximumValue: sliderRoot.maximumValue
             value: sliderRoot.upperValue
-            busy: UM.LayerView.busy
+            busy: UM.SimulationView.busy
             setValue: rangeHandle.setValue // connect callback functions
         }
     }
@@ -160,7 +161,7 @@ Item {
         height: sliderRoot.handleSize
         anchors.horizontalCenter: sliderRoot.horizontalCenter
         radius: sliderRoot.handleRadius
-        color: sliderRoot.upperHandleColor
+        color: upperHandleLabel.activeFocus ? sliderRoot.handleActiveColor : sliderRoot.upperHandleColor
         visible: sliderRoot.layersVisible
 
         function onHandleDragged () {
@@ -174,7 +175,7 @@ Item {
             sliderRoot.updateRangeHandle()
 
             // set the new value after moving the handle position
-            UM.LayerView.setCurrentLayer(getValue())
+            UM.SimulationView.setCurrentLayer(getValue())
         }
 
         // get the upper value based on the slider position
@@ -188,7 +189,7 @@ Item {
         // set the slider position based on the upper value
         function setValue (value) {
 
-            UM.LayerView.setCurrentLayer(value)
+            UM.SimulationView.setCurrentLayer(value)
 
             var diff = (value - sliderRoot.maximumValue) / (sliderRoot.minimumValue - sliderRoot.maximumValue)
             var newUpperYPosition = Math.round(diff * (sliderRoot.height - (2 * sliderRoot.handleSize + sliderRoot.minimumRangeHandleSize)))
@@ -198,6 +199,9 @@ Item {
             sliderRoot.updateRangeHandle()
         }
 
+        Keys.onUpPressed: upperHandleLabel.setValue(upperHandleLabel.value + ((event.modifiers & Qt.ShiftModifier) ? 10 : 1))
+        Keys.onDownPressed: upperHandleLabel.setValue(upperHandleLabel.value - ((event.modifiers & Qt.ShiftModifier) ? 10 : 1))
+
         // dragging
         MouseArea {
             anchors.fill: parent
@@ -210,10 +214,13 @@ Item {
             }
 
             onPositionChanged: parent.onHandleDragged()
-            onPressed: sliderRoot.setActiveHandle(upperHandle)
+            onPressed: {
+                sliderRoot.setActiveHandle(upperHandle)
+                upperHandleLabel.forceActiveFocus()
+            }
         }
 
-        LayerSliderLabel {
+        SimulationSliderLabel {
             id: upperHandleLabel
 
             height: sliderRoot.handleSize + UM.Theme.getSize("default_margin").height
@@ -225,7 +232,7 @@ Item {
             // custom properties
             maximumValue: sliderRoot.maximumValue
             value: sliderRoot.upperValue
-            busy: UM.LayerView.busy
+            busy: UM.SimulationView.busy
             setValue: upperHandle.setValue // connect callback functions
         }
     }
@@ -239,9 +246,9 @@ Item {
         height: parent.handleSize
         anchors.horizontalCenter: parent.horizontalCenter
         radius: sliderRoot.handleRadius
-        color: sliderRoot.lowerHandleColor
+        color: lowerHandleLabel.activeFocus ? sliderRoot.handleActiveColor : sliderRoot.lowerHandleColor
 
-        visible: slider.layersVisible
+        visible: sliderRoot.layersVisible
 
         function onHandleDragged () {
 
@@ -254,7 +261,7 @@ Item {
             sliderRoot.updateRangeHandle()
 
             // set the new value after moving the handle position
-            UM.LayerView.setMinimumLayer(getValue())
+            UM.SimulationView.setMinimumLayer(getValue())
         }
 
         // get the lower value from the current slider position
@@ -268,7 +275,7 @@ Item {
         // set the slider position based on the lower value
         function setValue (value) {
 
-            UM.LayerView.setMinimumLayer(value)
+            UM.SimulationView.setMinimumLayer(value)
 
             var diff = (value - sliderRoot.maximumValue) / (sliderRoot.minimumValue - sliderRoot.maximumValue)
             var newLowerYPosition = Math.round((sliderRoot.handleSize + sliderRoot.minimumRangeHandleSize) + diff * (sliderRoot.height - (2 * sliderRoot.handleSize + sliderRoot.minimumRangeHandleSize)))
@@ -278,6 +285,9 @@ Item {
             sliderRoot.updateRangeHandle()
         }
 
+        Keys.onUpPressed: lowerHandleLabel.setValue(lowerHandleLabel.value + ((event.modifiers & Qt.ShiftModifier) ? 10 : 1))
+        Keys.onDownPressed: lowerHandleLabel.setValue(lowerHandleLabel.value - ((event.modifiers & Qt.ShiftModifier) ? 10 : 1))
+
         // dragging
         MouseArea {
             anchors.fill: parent
@@ -290,10 +300,13 @@ Item {
             }
 
             onPositionChanged: parent.onHandleDragged()
-            onPressed: sliderRoot.setActiveHandle(lowerHandle)
+            onPressed: {
+                sliderRoot.setActiveHandle(lowerHandle)
+                lowerHandleLabel.forceActiveFocus()
+            }
         }
 
-        LayerSliderLabel {
+        SimulationSliderLabel {
             id: lowerHandleLabel
 
             height: sliderRoot.handleSize + UM.Theme.getSize("default_margin").height
@@ -305,7 +318,7 @@ Item {
             // custom properties
             maximumValue: sliderRoot.maximumValue
             value: sliderRoot.lowerValue
-            busy: UM.LayerView.busy
+            busy: UM.SimulationView.busy
             setValue: lowerHandle.setValue // connect callback functions
         }
     }

plugins/SimulationView/NozzleNode.py

@@ -0,0 +1,49 @@
+# Copyright (c) 2017 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from UM.Application import Application
+from UM.Math.Color import Color
+from UM.Math.Vector import Vector
+from UM.PluginRegistry import PluginRegistry
+from UM.Scene.SceneNode import SceneNode
+from UM.View.GL.OpenGL import OpenGL
+from UM.Resources import Resources
+
+import os
+
+class NozzleNode(SceneNode):
+    def __init__(self, parent = None):
+        super().__init__(parent)
+
+        self._shader = None
+        self.setCalculateBoundingBox(False)
+        self._createNozzleMesh()
+
+    def _createNozzleMesh(self):
+        mesh_file = "resources/nozzle.stl"
+        try:
+            path = os.path.join(PluginRegistry.getInstance().getPluginPath("SimulationView"), mesh_file)
+        except FileNotFoundError:
+            path = ""
+
+        reader = Application.getInstance().getMeshFileHandler().getReaderForFile(path)
+        node = reader.read(path)
+
+        if node.getMeshData():
+            self.setMeshData(node.getMeshData())
+
+    def render(self, renderer):
+        # Avoid to render if it is not visible
+        if not self.isVisible():
+            return False
+
+        if not self._shader:
+            # We now misuse the platform shader, as it actually supports textures
+            self._shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "color.shader"))
+            self._shader.setUniformValue("u_color", Color(*Application.getInstance().getTheme().getColor("layerview_nozzle").getRgb()))
+            # Set the opacity to 0, so that the template is in full control.
+            self._shader.setUniformValue("u_opacity", 0)
+
+        if self.getMeshData():
+            renderer.queueNode(self, shader = self._shader, transparent = True)
+            return True

plugins/SimulationView/PathSlider.qml

@@ -0,0 +1,161 @@
+// Copyright (c) 2017 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.2
+import QtQuick.Controls 1.2
+import QtQuick.Layouts 1.1
+import QtQuick.Controls.Styles 1.1
+
+import UM 1.0 as UM
+import Cura 1.0 as Cura
+
+Item {
+    id: sliderRoot
+
+    // handle properties
+    property real handleSize: 10
+    property real handleRadius: handleSize / 2
+    property color handleColor: "black"
+    property color handleActiveColor: "white"
+    property color rangeColor: "black"
+    property real handleLabelWidth: width
+
+    // track properties
+    property real trackThickness: 4 // width of the slider track
+    property real trackRadius: trackThickness / 2
+    property color trackColor: "white"
+    property real trackBorderWidth: 1 // width of the slider track border
+    property color trackBorderColor: "black"
+
+    // value properties
+    property real maximumValue: 100
+    property bool roundValues: true
+    property real handleValue: maximumValue
+
+    property bool pathsVisible: true
+
+    function getHandleValueFromSliderHandle () {
+        return handle.getValue()
+    }
+
+    function setHandleValue (value) {
+        handle.setValue(value)
+        updateRangeHandle()
+    }
+
+    function updateRangeHandle () {
+        rangeHandle.width = handle.x - sliderRoot.handleSize
+    }
+
+    // slider track
+    Rectangle {
+        id: track
+
+        width: sliderRoot.width - sliderRoot.handleSize
+        height: sliderRoot.trackThickness
+        radius: sliderRoot.trackRadius
+        anchors.centerIn: sliderRoot
+        color: sliderRoot.trackColor
+        border.width: sliderRoot.trackBorderWidth
+        border.color: sliderRoot.trackBorderColor
+        visible: sliderRoot.pathsVisible
+    }
+
+    // Progress indicator
+    Item {
+        id: rangeHandle
+
+        x: handle.width
+        height: sliderRoot.handleSize
+        width: handle.x - sliderRoot.handleSize
+        anchors.verticalCenter: sliderRoot.verticalCenter
+        visible: sliderRoot.pathsVisible
+
+        Rectangle {
+            height: sliderRoot.trackThickness - 2 * sliderRoot.trackBorderWidth
+            width: parent.width + sliderRoot.handleSize
+            anchors.centerIn: parent
+            color: sliderRoot.rangeColor
+        }
+    }
+
+    // Handle
+    Rectangle {
+        id: handle
+
+        x: sliderRoot.handleSize
+        width: sliderRoot.handleSize
+        height: sliderRoot.handleSize
+        anchors.verticalCenter: sliderRoot.verticalCenter
+        radius: sliderRoot.handleRadius
+        color: handleLabel.activeFocus ? sliderRoot.handleActiveColor : sliderRoot.handleColor
+        visible: sliderRoot.pathsVisible
+
+        function onHandleDragged () {
+
+            // update the range handle
+            sliderRoot.updateRangeHandle()
+
+            // set the new value after moving the handle position
+            UM.SimulationView.setCurrentPath(getValue())
+        }
+
+        // get the value based on the slider position
+        function getValue () {
+            var result = x / (sliderRoot.width - sliderRoot.handleSize)
+            result = result * sliderRoot.maximumValue
+            result = sliderRoot.roundValues ? Math.round(result) : result
+            return result
+        }
+
+        // set the slider position based on the value
+        function setValue (value) {
+
+            UM.SimulationView.setCurrentPath(value)
+
+            var diff = value / sliderRoot.maximumValue
+            var newXPosition = Math.round(diff * (sliderRoot.width - sliderRoot.handleSize))
+            x = newXPosition
+
+            // update the range handle
+            sliderRoot.updateRangeHandle()
+        }
+
+        Keys.onRightPressed: handleLabel.setValue(handleLabel.value + ((event.modifiers & Qt.ShiftModifier) ? 10 : 1))
+        Keys.onLeftPressed: handleLabel.setValue(handleLabel.value - ((event.modifiers & Qt.ShiftModifier) ? 10 : 1))
+
+        // dragging
+        MouseArea {
+            anchors.fill: parent
+
+            drag {
+                target: parent
+                axis: Drag.XAxis
+                minimumX: 0
+                maximumX: sliderRoot.width - sliderRoot.handleSize
+            }
+            onPressed: {
+                handleLabel.forceActiveFocus()
+            }
+
+            onPositionChanged: parent.onHandleDragged()
+        }
+
+        SimulationSliderLabel {
+            id: handleLabel
+
+            height: sliderRoot.handleSize + UM.Theme.getSize("default_margin").height
+            y: parent.y + sliderRoot.handleSize + UM.Theme.getSize("default_margin").height
+            anchors.horizontalCenter: parent.horizontalCenter
+            target: Qt.point(x + width / 2, sliderRoot.height)
+            visible: false
+            startFrom: 0
+
+            // custom properties
+            maximumValue: sliderRoot.maximumValue
+            value: sliderRoot.handleValue
+            busy: UM.SimulationView.busy
+            setValue: handle.setValue // connect callback functions
+        }
+    }
+}

plugins/SimulationView/SimulationPass.py

@@ -0,0 +1,187 @@
+# Copyright (c) 2017 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from UM.Math.Color import Color
+from UM.Math.Vector import Vector
+from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
+from UM.Resources import Resources
+from UM.Scene.SceneNode import SceneNode
+from UM.Scene.ToolHandle import ToolHandle
+from UM.Application import Application
+from UM.PluginRegistry import PluginRegistry
+
+from UM.View.RenderPass import RenderPass
+from UM.View.RenderBatch import RenderBatch
+from UM.View.GL.OpenGL import OpenGL
+
+from cura.Settings.ExtruderManager import ExtruderManager
+
+
+import os.path
+
+## RenderPass used to display g-code paths.
+from plugins.SimulationView.NozzleNode import NozzleNode
+
+
+class SimulationPass(RenderPass):
+    def __init__(self, width, height):
+        super().__init__("simulationview", width, height)
+
+        self._layer_shader = None
+        self._layer_shadow_shader = None
+        self._current_shader = None # This shader will be the shadow or the normal depending if the user wants to see the paths or the layers
+        self._tool_handle_shader = None
+        self._nozzle_shader = None
+        self._old_current_layer = 0
+        self._old_current_path = 0
+        self._gl = OpenGL.getInstance().getBindingsObject()
+        self._scene = Application.getInstance().getController().getScene()
+        self._extruder_manager = ExtruderManager.getInstance()
+
+        self._layer_view = None
+        self._compatibility_mode = None
+
+    def setSimulationView(self, layerview):
+        self._layer_view = layerview
+        self._compatibility_mode = layerview.getCompatibilityMode()
+
+    def render(self):
+        if not self._layer_shader:
+            if self._compatibility_mode:
+                shader_filename = "layers.shader"
+                shadow_shader_filename = "layers_shadow.shader"
+            else:
+                shader_filename = "layers3d.shader"
+                shadow_shader_filename = "layers3d_shadow.shader"
+            self._layer_shader = OpenGL.getInstance().createShaderProgram(os.path.join(PluginRegistry.getInstance().getPluginPath("SimulationView"), shader_filename))
+            self._layer_shadow_shader = OpenGL.getInstance().createShaderProgram(os.path.join(PluginRegistry.getInstance().getPluginPath("SimulationView"), shadow_shader_filename))
+            self._current_shader = self._layer_shader
+        # Use extruder 0 if the extruder manager reports extruder index -1 (for single extrusion printers)
+        self._layer_shader.setUniformValue("u_active_extruder", float(max(0, self._extruder_manager.activeExtruderIndex)))
+        if self._layer_view:
+            self._layer_shader.setUniformValue("u_max_feedrate", self._layer_view.getMaxFeedrate())
+            self._layer_shader.setUniformValue("u_min_feedrate", self._layer_view.getMinFeedrate())
+            self._layer_shader.setUniformValue("u_max_thickness", self._layer_view.getMaxThickness())
+            self._layer_shader.setUniformValue("u_min_thickness", self._layer_view.getMinThickness())
+            self._layer_shader.setUniformValue("u_layer_view_type", self._layer_view.getSimulationViewType())
+            self._layer_shader.setUniformValue("u_extruder_opacity", self._layer_view.getExtruderOpacities())
+            self._layer_shader.setUniformValue("u_show_travel_moves", self._layer_view.getShowTravelMoves())
+            self._layer_shader.setUniformValue("u_show_helpers", self._layer_view.getShowHelpers())
+            self._layer_shader.setUniformValue("u_show_skin", self._layer_view.getShowSkin())
+            self._layer_shader.setUniformValue("u_show_infill", self._layer_view.getShowInfill())
+        else:
+            #defaults
+            self._layer_shader.setUniformValue("u_max_feedrate", 1)
+            self._layer_shader.setUniformValue("u_min_feedrate", 0)
+            self._layer_shader.setUniformValue("u_max_thickness", 1)
+            self._layer_shader.setUniformValue("u_min_thickness", 0)
+            self._layer_shader.setUniformValue("u_layer_view_type", 1)
+            self._layer_shader.setUniformValue("u_extruder_opacity", [1, 1, 1, 1])
+            self._layer_shader.setUniformValue("u_show_travel_moves", 0)
+            self._layer_shader.setUniformValue("u_show_helpers", 1)
+            self._layer_shader.setUniformValue("u_show_skin", 1)
+            self._layer_shader.setUniformValue("u_show_infill", 1)
+
+        if not self._tool_handle_shader:
+            self._tool_handle_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "toolhandle.shader"))
+
+        if not self._nozzle_shader:
+            self._nozzle_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "color.shader"))
+            self._nozzle_shader.setUniformValue("u_color", Color(*Application.getInstance().getTheme().getColor("layerview_nozzle").getRgb()))
+
+        self.bind()
+
+        tool_handle_batch = RenderBatch(self._tool_handle_shader, type = RenderBatch.RenderType.Solid)
+        head_position = None  # Indicates the current position of the print head
+        nozzle_node = None
+
+        for node in DepthFirstIterator(self._scene.getRoot()):
+
+            if isinstance(node, ToolHandle):
+                tool_handle_batch.addItem(node.getWorldTransformation(), mesh = node.getSolidMesh())
+
+
+            elif isinstance(node, NozzleNode):
+                nozzle_node = node
+                nozzle_node.setVisible(False)
+
+            elif isinstance(node, SceneNode) and (node.getMeshData() or node.callDecoration("isBlockSlicing")) and node.isVisible():
+                layer_data = node.callDecoration("getLayerData")
+                if not layer_data:
+                    continue
+
+                # Render all layers below a certain number as line mesh instead of vertices.
+                if self._layer_view._current_layer_num > -1 and ((not self._layer_view._only_show_top_layers) or (not self._layer_view.getCompatibilityMode())):
+                    start = 0
+                    end = 0
+                    element_counts = layer_data.getElementCounts()
+                    for layer in sorted(element_counts.keys()):
+                        # In the current layer, we show just the indicated paths
+                        if layer == self._layer_view._current_layer_num:
+                            # We look for the position of the head, searching the point of the current path
+                            index = self._layer_view._current_path_num
+                            offset = 0
+                            for polygon in layer_data.getLayer(layer).polygons:
+                                # The size indicates all values in the two-dimension array, and the second dimension is
+                                # always size 3 because we have 3D points.
+                                if index >= polygon.data.size // 3 - offset:
+                                    index -= polygon.data.size // 3 - offset
+                                    offset = 1  # This is to avoid the first point when there is more than one polygon, since has the same value as the last point in the previous polygon
+                                    continue
+                                # The head position is calculated and translated
+                                head_position = Vector(polygon.data[index+offset][0], polygon.data[index+offset][1], polygon.data[index+offset][2]) + node.getWorldPosition()
+                                break
+                            break
+                        if self._layer_view._minimum_layer_num > layer:
+                            start += element_counts[layer]
+                        end += element_counts[layer]
+
+                    # Calculate the range of paths in the last layer
+                    current_layer_start = end
+                    current_layer_end = end + self._layer_view._current_path_num * 2 # Because each point is used twice
+
+                    # This uses glDrawRangeElements internally to only draw a certain range of lines.
+                    # All the layers but the current selected layer are rendered first
+                    if self._old_current_path != self._layer_view._current_path_num:
+                        self._current_shader = self._layer_shadow_shader
+                    if not self._layer_view.isSimulationRunning() and self._old_current_layer != self._layer_view._current_layer_num:
+                        self._current_shader = self._layer_shader
+
+                    layers_batch = RenderBatch(self._current_shader, type = RenderBatch.RenderType.Solid, mode = RenderBatch.RenderMode.Lines, range = (start, end))
+                    layers_batch.addItem(node.getWorldTransformation(), layer_data)
+                    layers_batch.render(self._scene.getActiveCamera())
+
+                    # Current selected layer is rendered
+                    current_layer_batch = RenderBatch(self._layer_shader, type = RenderBatch.RenderType.Solid, mode = RenderBatch.RenderMode.Lines, range = (current_layer_start, current_layer_end))
+                    current_layer_batch.addItem(node.getWorldTransformation(), layer_data)
+                    current_layer_batch.render(self._scene.getActiveCamera())
+
+                    self._old_current_layer = self._layer_view._current_layer_num
+                    self._old_current_path = self._layer_view._current_path_num
+
+                # Create a new batch that is not range-limited
+                batch = RenderBatch(self._layer_shader, type = RenderBatch.RenderType.Solid)
+
+                if self._layer_view.getCurrentLayerMesh():
+                    batch.addItem(node.getWorldTransformation(), self._layer_view.getCurrentLayerMesh())
+
+                if self._layer_view.getCurrentLayerJumps():
+                    batch.addItem(node.getWorldTransformation(), self._layer_view.getCurrentLayerJumps())
+
+                if len(batch.items) > 0:
+                    batch.render(self._scene.getActiveCamera())
+
+        # The nozzle is drawn once we know the correct position
+        if self._layer_view.getActivity() and nozzle_node is not None:
+            if head_position is not None:
+                nozzle_node.setVisible(True)
+                nozzle_node.setPosition(head_position)
+                nozzle_batch = RenderBatch(self._nozzle_shader, type = RenderBatch.RenderType.Solid)
+                nozzle_batch.addItem(nozzle_node.getWorldTransformation(), mesh = nozzle_node.getMeshData())
+                nozzle_batch.render(self._scene.getActiveCamera())
+
+        # Render toolhandles on top of the layerview
+        if len(tool_handle_batch.items) > 0:
+            tool_handle_batch.render(self._scene.getActiveCamera())
+
+        self.release()

plugins/SimulationView/SimulationSliderLabel.qml

@@ -17,6 +17,7 @@ UM.PointingRectangle {
     property real value: 0
     property var setValue // Function
     property bool busy: false
+    property int startFrom: 1
 
     target: Qt.point(parent.width, y + height / 2)
     arrowSize: UM.Theme.getSize("default_arrow").width
@@ -53,7 +54,7 @@ UM.PointingRectangle {
         }
 
         width: 40 * screenScaleFactor
-        text: sliderLabelRoot.value + 1 // the current handle value, add 1 because layers is an array
+        text: sliderLabelRoot.value + startFrom // the current handle value, add 1 because layers is an array
         horizontalAlignment: TextInput.AlignRight
 
         // key bindings, work when label is currenctly focused (active handle in LayerSlider)
@@ -74,14 +75,14 @@ UM.PointingRectangle {
             cursorPosition = 0
 
             if (valueLabel.text != "") {
-                // -1 because we need to convert back to an array structure
-                sliderLabelRoot.setValue(parseInt(valueLabel.text) - 1)
+                // -startFrom because we need to convert back to an array structure
+                sliderLabelRoot.setValue(parseInt(valueLabel.text) - startFrom)
             }
         }
 
         validator: IntValidator {
-            bottom: 1
-            top: sliderLabelRoot.maximumValue + 1 // +1 because actual layers is an array
+            bottom:startFrom
+            top: sliderLabelRoot.maximumValue + startFrom // +startFrom because maybe we want to start in a different value rather than 0
         }
     }
 

plugins/SimulationView/SimulationView.py

@@ -1,46 +1,46 @@
-# Copyright (c) 2015 Ultimaker B.V.
+# Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
 import sys
 
-from UM.PluginRegistry import PluginRegistry
-from UM.View.View import View
-from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
-from UM.Resources import Resources
-from UM.Event import Event, KeyEvent
-from UM.Signal import Signal
-from UM.Scene.Selection import Selection
-from UM.Math.Color import Color
-from UM.Mesh.MeshBuilder import MeshBuilder
-from UM.Job import Job
-from UM.Preferences import Preferences
-from UM.Logger import Logger
-from UM.View.GL.OpenGL import OpenGL
-from UM.Message import Message
-from UM.Application import Application
-from UM.View.GL.OpenGLContext import OpenGLContext
-
-from cura.ConvexHullNode import ConvexHullNode
-from cura.Settings.ExtruderManager import ExtruderManager
-
 from PyQt5.QtCore import Qt
 from PyQt5.QtWidgets import QApplication
 
-from . import LayerViewProxy
-
+from UM.Application import Application
+from UM.Event import Event, KeyEvent
+from UM.Job import Job
+from UM.Logger import Logger
+from UM.Math.Color import Color
+from UM.Math.Vector import Vector
+from UM.Mesh.MeshBuilder import MeshBuilder
+from UM.Message import Message
+from UM.PluginRegistry import PluginRegistry
+from UM.Preferences import Preferences
+from UM.Resources import Resources
+from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
+from UM.Scene.SceneNode import SceneNode
+from UM.Scene.Selection import Selection
+from UM.Signal import Signal
+from UM.View.GL.OpenGL import OpenGL
+from UM.View.GL.OpenGLContext import OpenGLContext
+from UM.View.View import View
 from UM.i18n import i18nCatalog
-catalog = i18nCatalog("cura")
+from cura.ConvexHullNode import ConvexHullNode
+from plugins.SimulationView.NozzleNode import NozzleNode
+from . import SimulationPass, SimulationViewProxy
 
-from . import LayerPass
+catalog = i18nCatalog("cura")
 
 import numpy
 import os.path
 
 ## View used to display g-code paths.
-class LayerView(View):
-    # Must match LayerView.qml
+class SimulationView(View):
+    # Must match SimulationView.qml
     LAYER_VIEW_TYPE_MATERIAL_TYPE = 0
     LAYER_VIEW_TYPE_LINE_TYPE = 1
+    LAYER_VIEW_TYPE_FEEDRATE = 2
+    LAYER_VIEW_TYPE_THICKNESS = 3
 
     def __init__(self):
         super().__init__()
@@ -54,22 +54,29 @@ class LayerView(View):
         self._activity = False
         self._old_max_layers = 0
 
+        self._max_paths = 0
+        self._current_path_num = 0
+        self._minimum_path_num = 0
+        self.currentLayerNumChanged.connect(self._onCurrentLayerNumChanged)
+
         self._busy = False
+        self._simulation_running = False
 
         self._ghost_shader = None
         self._layer_pass = None
         self._composite_pass = None
         self._old_layer_bindings = None
-        self._layerview_composite_shader = None
+        self._simulationview_composite_shader = None
         self._old_composite_shader = None
 
         self._global_container_stack = None
-        self._proxy = LayerViewProxy.LayerViewProxy()
+        self._proxy = SimulationViewProxy.SimulationViewProxy()
         self._controller.getScene().getRoot().childrenChanged.connect(self._onSceneChanged)
 
         self._resetSettings()
         self._legend_items = None
         self._show_travel_moves = False
+        self._nozzle_node = None
 
         Preferences.getInstance().addPreference("view/top_layer_count", 5)
         Preferences.getInstance().addPreference("view/only_show_top_layers", False)
@@ -91,7 +98,7 @@ class LayerView(View):
         self._compatibility_mode = True  # for safety
 
         self._wireprint_warning_message = Message(catalog.i18nc("@info:status", "Cura does not accurately display layers when Wire Printing is enabled"),
-                                                  title = catalog.i18nc("@info:title", "Layer View"))
+                                                  title = catalog.i18nc("@info:title", "Simulation View"))
 
     def _resetSettings(self):
         self._layer_view_type = 0  # 0 is material color, 1 is color by linetype, 2 is speed
@@ -101,17 +108,24 @@ class LayerView(View):
         self._show_helpers = 1
         self._show_skin = 1
         self._show_infill = 1
+        self.resetLayerData()
 
     def getActivity(self):
         return self._activity
 
-    def getLayerPass(self):
+    def setActivity(self, activity):
+        if self._activity == activity:
+            return
+        self._activity = activity
+        self.activityChanged.emit()
+
+    def getSimulationPass(self):
         if not self._layer_pass:
             # Currently the RenderPass constructor requires a size > 0
             # This should be fixed in RenderPass's constructor.
-            self._layer_pass = LayerPass.LayerPass(1, 1)
+            self._layer_pass = SimulationPass.SimulationPass(1, 1)
             self._compatibility_mode = OpenGLContext.isLegacyOpenGL() or bool(Preferences.getInstance().getValue("view/force_layer_view_compatibility_mode"))
-            self._layer_pass.setLayerView(self)
+            self._layer_pass.setSimulationView(self)
         return self._layer_pass
 
     def getCurrentLayer(self):
@@ -120,13 +134,26 @@ class LayerView(View):
     def getMinimumLayer(self):
         return self._minimum_layer_num
 
-    def _onSceneChanged(self, node):
-        self.calculateMaxLayers()
-
     def getMaxLayers(self):
         return self._max_layers
 
-    busyChanged = Signal()
+    def getCurrentPath(self):
+        return self._current_path_num
+
+    def getMinimumPath(self):
+        return self._minimum_path_num
+
+    def getMaxPaths(self):
+        return self._max_paths
+
+    def getNozzleNode(self):
+        if not self._nozzle_node:
+            self._nozzle_node = NozzleNode()
+        return self._nozzle_node
+
+    def _onSceneChanged(self, node):
+        self.setActivity(False)
+        self.calculateMaxLayers()
 
     def isBusy(self):
         return self._busy
@@ -136,9 +163,19 @@ class LayerView(View):
             self._busy = busy
             self.busyChanged.emit()
 
+    def isSimulationRunning(self):
+        return self._simulation_running
+
+    def setSimulationRunning(self, running):
+        self._simulation_running = running
+
     def resetLayerData(self):
         self._current_layer_mesh = None
         self._current_layer_jumps = None
+        self._max_feedrate = sys.float_info.min
+        self._min_feedrate = sys.float_info.max
+        self._max_thickness = sys.float_info.min
+        self._min_thickness = sys.float_info.max
 
     def beginRendering(self):
         scene = self.getController().getScene()
@@ -186,15 +223,43 @@ class LayerView(View):
 
             self.currentLayerNumChanged.emit()
 
+    def setPath(self, value):
+        if self._current_path_num != value:
+            self._current_path_num = value
+            if self._current_path_num < 0:
+                self._current_path_num = 0
+            if self._current_path_num > self._max_paths:
+                self._current_path_num = self._max_paths
+            if self._current_path_num < self._minimum_path_num:
+                self._minimum_path_num = self._current_path_num
+
+            self._startUpdateTopLayers()
+
+            self.currentPathNumChanged.emit()
+
+    def setMinimumPath(self, value):
+        if self._minimum_path_num != value:
+            self._minimum_path_num = value
+            if self._minimum_path_num < 0:
+                self._minimum_path_num = 0
+            if self._minimum_path_num > self._max_layers:
+                self._minimum_path_num = self._max_layers
+            if self._minimum_path_num > self._current_path_num:
+                self._current_path_num = self._minimum_path_num
+
+            self._startUpdateTopLayers()
+
+            self.currentPathNumChanged.emit()
+
     ##  Set the layer view type
     #
-    #   \param layer_view_type integer as in LayerView.qml and this class
-    def setLayerViewType(self, layer_view_type):
+    #   \param layer_view_type integer as in SimulationView.qml and this class
+    def setSimulationViewType(self, layer_view_type):
         self._layer_view_type = layer_view_type
         self.currentLayerNumChanged.emit()
 
-    ##  Return the layer view type, integer as in LayerView.qml and this class
-    def getLayerViewType(self):
+    ##  Return the layer view type, integer as in SimulationView.qml and this class
+    def getSimulationViewType(self):
         return self._layer_view_type
 
     ##  Set the extruder opacity
@@ -243,9 +308,20 @@ class LayerView(View):
     def getExtruderCount(self):
         return self._extruder_count
 
+    def getMinFeedrate(self):
+        return self._min_feedrate
+
+    def getMaxFeedrate(self):
+        return self._max_feedrate
+
+    def getMinThickness(self):
+        return self._min_thickness
+
+    def getMaxThickness(self):
+        return self._max_thickness
+
     def calculateMaxLayers(self):
         scene = self.getController().getScene()
-        self._activity = True
 
         self._old_max_layers = self._max_layers
         ## Recalculate num max layers
@@ -255,9 +331,16 @@ class LayerView(View):
             if not layer_data:
                 continue
 
+            self.setActivity(True)
             min_layer_number = sys.maxsize
             max_layer_number = -sys.maxsize
             for layer_id in layer_data.getLayers():
+                # Store the max and min feedrates and thicknesses for display purposes
+                for p in layer_data.getLayer(layer_id).polygons:
+                    self._max_feedrate = max(float(p.lineFeedrates.max()), self._max_feedrate)
+                    self._min_feedrate = min(float(p.lineFeedrates.min()), self._min_feedrate)
+                    self._max_thickness = max(float(p.lineThicknesses.max()), self._max_thickness)
+                    self._min_thickness = min(float(p.lineThicknesses.min()), self._min_thickness)
                 if max_layer_number < layer_id:
                     max_layer_number = layer_id
                 if min_layer_number > layer_id:
@@ -281,10 +364,32 @@ class LayerView(View):
                 self.maxLayersChanged.emit()
         self._startUpdateTopLayers()
 
+    def calculateMaxPathsOnLayer(self, layer_num):
+        # Update the currentPath
+        scene = self.getController().getScene()
+        for node in DepthFirstIterator(scene.getRoot()):
+            layer_data = node.callDecoration("getLayerData")
+            if not layer_data:
+                continue
+
+            layer = layer_data.getLayer(layer_num)
+            if layer is None:
+                return
+            new_max_paths = layer.lineMeshElementCount()
+            if new_max_paths > 0 and new_max_paths != self._max_paths:
+                self._max_paths = new_max_paths
+                self.maxPathsChanged.emit()
+
+            self.setPath(int(new_max_paths))
+
     maxLayersChanged = Signal()
+    maxPathsChanged = Signal()
     currentLayerNumChanged = Signal()
+    currentPathNumChanged = Signal()
     globalStackChanged = Signal()
     preferencesChanged = Signal()
+    busyChanged = Signal()
+    activityChanged = Signal()
 
     ##  Hackish way to ensure the proxy is already created, which ensures that the layerview.qml is already created
     #   as this caused some issues.
@@ -308,26 +413,31 @@ class LayerView(View):
                 return True
 
         if event.type == Event.ViewActivateEvent:
-            # Make sure the LayerPass is created
-            layer_pass = self.getLayerPass()
+            # Make sure the SimulationPass is created
+            layer_pass = self.getSimulationPass()
             self.getRenderer().addRenderPass(layer_pass)
 
+            # Make sure the NozzleNode is add to the root
+            nozzle = self.getNozzleNode()
+            nozzle.setParent(self.getController().getScene().getRoot())
+            nozzle.setVisible(False)
+
             Application.getInstance().globalContainerStackChanged.connect(self._onGlobalStackChanged)
             self._onGlobalStackChanged()
 
-            if not self._layerview_composite_shader:
-                self._layerview_composite_shader = OpenGL.getInstance().createShaderProgram(os.path.join(PluginRegistry.getInstance().getPluginPath("LayerView"), "layerview_composite.shader"))
+            if not self._simulationview_composite_shader:
+                self._simulationview_composite_shader = OpenGL.getInstance().createShaderProgram(os.path.join(PluginRegistry.getInstance().getPluginPath("SimulationView"), "simulationview_composite.shader"))
                 theme = Application.getInstance().getTheme()
-                self._layerview_composite_shader.setUniformValue("u_background_color", Color(*theme.getColor("viewport_background").getRgb()))
-                self._layerview_composite_shader.setUniformValue("u_outline_color", Color(*theme.getColor("model_selection_outline").getRgb()))
+                self._simulationview_composite_shader.setUniformValue("u_background_color", Color(*theme.getColor("viewport_background").getRgb()))
+                self._simulationview_composite_shader.setUniformValue("u_outline_color", Color(*theme.getColor("model_selection_outline").getRgb()))
 
             if not self._composite_pass:
                 self._composite_pass = self.getRenderer().getRenderPass("composite")
 
             self._old_layer_bindings = self._composite_pass.getLayerBindings()[:] # make a copy so we can restore to it later
-            self._composite_pass.getLayerBindings().append("layerview")
+            self._composite_pass.getLayerBindings().append("simulationview")
             self._old_composite_shader = self._composite_pass.getCompositeShader()
-            self._composite_pass.setCompositeShader(self._layerview_composite_shader)
+            self._composite_pass.setCompositeShader(self._simulationview_composite_shader)
 
         elif event.type == Event.ViewDeactivateEvent:
             self._wireprint_warning_message.hide()
@@ -335,6 +445,7 @@ class LayerView(View):
             if self._global_container_stack:
                 self._global_container_stack.propertyChanged.disconnect(self._onPropertyChanged)
 
+            self._nozzle_node.setParent(None)
             self.getRenderer().removeRenderPass(self._layer_pass)
             self._composite_pass.setLayerBindings(self._old_layer_bindings)
             self._composite_pass.setCompositeShader(self._old_composite_shader)
@@ -364,6 +475,9 @@ class LayerView(View):
             else:
                 self._wireprint_warning_message.hide()
 
+    def _onCurrentLayerNumChanged(self):
+        self.calculateMaxPathsOnLayer(self._current_layer_num)
+
     def _startUpdateTopLayers(self):
         if not self._compatibility_mode:
             return
@@ -397,7 +511,7 @@ class LayerView(View):
         self._compatibility_mode = OpenGLContext.isLegacyOpenGL() or bool(
             Preferences.getInstance().getValue("view/force_layer_view_compatibility_mode"))
 
-        self.setLayerViewType(int(float(Preferences.getInstance().getValue("layerview/layer_view_type"))));
+        self.setSimulationViewType(int(float(Preferences.getInstance().getValue("layerview/layer_view_type"))));
 
         for extruder_nr, extruder_opacity in enumerate(Preferences.getInstance().getValue("layerview/extruder_opacities").split("|")):
             try:

plugins/SimulationView/SimulationView.qml

@@ -0,0 +1,645 @@
+// Copyright (c) 2017 Ultimaker B.V.
+// Cura is released under the terms of the LGPLv3 or higher.
+
+import QtQuick 2.4
+import QtQuick.Controls 1.2
+import QtQuick.Layouts 1.1
+import QtQuick.Controls.Styles 1.1
+
+import UM 1.0 as UM
+import Cura 1.0 as Cura
+
+Item
+{
+    id: base
+    width: {
+        if (UM.SimulationView.compatibilityMode) {
+            return UM.Theme.getSize("layerview_menu_size_compatibility").width;
+        } else {
+            return UM.Theme.getSize("layerview_menu_size").width;
+        }
+    }
+    height: {
+        if (UM.SimulationView.compatibilityMode) {
+            return UM.Theme.getSize("layerview_menu_size_compatibility").height;
+        } else if (UM.Preferences.getValue("layerview/layer_view_type") == 0) {
+            return UM.Theme.getSize("layerview_menu_size_material_color_mode").height + UM.SimulationView.extruderCount * (UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("layerview_row_spacing").height)
+        } else {
+            return UM.Theme.getSize("layerview_menu_size").height + UM.SimulationView.extruderCount * (UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("layerview_row_spacing").height)
+        }
+    }
+
+    property var buttonTarget: {
+        if(parent != null)
+        {
+            var force_binding = parent.y; // ensure this gets reevaluated when the panel moves
+            return base.mapFromItem(parent.parent, parent.buttonTarget.x, parent.buttonTarget.y)
+        }
+        return Qt.point(0,0)
+    }
+
+    visible: parent != null ? !parent.parent.monitoringPrint: true
+
+    UM.PointingRectangle {
+        id: layerViewMenu
+        anchors.right: parent.right
+        anchors.top: parent.top
+        width: parent.width
+        height: parent.height
+        z: layerSlider.z - 1
+        color: UM.Theme.getColor("tool_panel_background")
+        borderWidth: UM.Theme.getSize("default_lining").width
+        borderColor: UM.Theme.getColor("lining")
+        arrowSize: 0 // hide arrow until weird issue with first time rendering is fixed
+
+        ColumnLayout {
+            id: view_settings
+
+            property var extruder_opacities: UM.Preferences.getValue("layerview/extruder_opacities").split("|")
+            property bool show_travel_moves: UM.Preferences.getValue("layerview/show_travel_moves")
+            property bool show_helpers: UM.Preferences.getValue("layerview/show_helpers")
+            property bool show_skin: UM.Preferences.getValue("layerview/show_skin")
+            property bool show_infill: UM.Preferences.getValue("layerview/show_infill")
+            // if we are in compatibility mode, we only show the "line type"
+            property bool show_legend: UM.SimulationView.compatibilityMode ? true : UM.Preferences.getValue("layerview/layer_view_type") == 1
+            property bool show_gradient: UM.SimulationView.compatibilityMode ? false : UM.Preferences.getValue("layerview/layer_view_type") == 2 || UM.Preferences.getValue("layerview/layer_view_type") == 3
+            property bool only_show_top_layers: UM.Preferences.getValue("view/only_show_top_layers")
+            property int top_layer_count: UM.Preferences.getValue("view/top_layer_count")
+
+            anchors.top: parent.top
+            anchors.topMargin: UM.Theme.getSize("default_margin").height
+            anchors.left: parent.left
+            anchors.leftMargin: UM.Theme.getSize("default_margin").width
+            spacing: UM.Theme.getSize("layerview_row_spacing").height
+            anchors.right: parent.right
+            anchors.rightMargin: UM.Theme.getSize("default_margin").width
+
+            Label
+            {
+                id: layerViewTypesLabel
+                anchors.left: parent.left
+                text: catalog.i18nc("@label","Color scheme")
+                font: UM.Theme.getFont("default");
+                visible: !UM.SimulationView.compatibilityMode
+                Layout.fillWidth: true
+                color: UM.Theme.getColor("setting_control_text")
+            }
+
+            ListModel  // matches SimulationView.py
+            {
+                id: layerViewTypes
+            }
+
+            Component.onCompleted:
+            {
+                layerViewTypes.append({
+                    text: catalog.i18nc("@label:listbox", "Material Color"),
+                    type_id: 0
+                })
+                layerViewTypes.append({
+                    text: catalog.i18nc("@label:listbox", "Line Type"),
+                    type_id: 1
+                })
+                layerViewTypes.append({
+                    text: catalog.i18nc("@label:listbox", "Feedrate"),
+                    type_id: 2
+                })
+                layerViewTypes.append({
+                    text: catalog.i18nc("@label:listbox", "Layer thickness"),
+                    type_id: 3  // these ids match the switching in the shader
+                })
+            }
+
+            ComboBox
+            {
+                id: layerTypeCombobox
+                anchors.left: parent.left
+                Layout.fillWidth: true
+                Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
+                model: layerViewTypes
+                visible: !UM.SimulationView.compatibilityMode
+                style: UM.Theme.styles.combobox
+                anchors.right: parent.right
+                anchors.rightMargin: 10 * screenScaleFactor
+
+                onActivated:
+                {
+                    UM.Preferences.setValue("layerview/layer_view_type", index);
+                }
+
+                Component.onCompleted:
+                {
+                    currentIndex = UM.SimulationView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type");
+                    updateLegends(currentIndex);
+                }
+
+                function updateLegends(type_id)
+                {
+                    // update visibility of legends
+                    view_settings.show_legend = UM.SimulationView.compatibilityMode || (type_id == 1);
+                }
+
+            }
+
+            Label
+            {
+                id: compatibilityModeLabel
+                anchors.left: parent.left
+                text: catalog.i18nc("@label","Compatibility Mode")
+                font: UM.Theme.getFont("default")
+                color: UM.Theme.getColor("text")
+                visible: UM.SimulationView.compatibilityMode
+                Layout.fillWidth: true
+                Layout.preferredHeight: UM.Theme.getSize("layerview_row").height
+                Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
+            }
+
+            Label
+            {
+                id: space2Label
+                anchors.left: parent.left
+                text: " "
+                font.pointSize: 0.5
+            }
+
+            Connections {
+                target: UM.Preferences
+                onPreferenceChanged:
+                {
+                    layerTypeCombobox.currentIndex = UM.SimulationView.compatibilityMode ? 1 : UM.Preferences.getValue("layerview/layer_view_type");
+                    layerTypeCombobox.updateLegends(layerTypeCombobox.currentIndex);
+                    view_settings.extruder_opacities = UM.Preferences.getValue("layerview/extruder_opacities").split("|");
+                    view_settings.show_travel_moves = UM.Preferences.getValue("layerview/show_travel_moves");
+                    view_settings.show_helpers = UM.Preferences.getValue("layerview/show_helpers");
+                    view_settings.show_skin = UM.Preferences.getValue("layerview/show_skin");
+                    view_settings.show_infill = UM.Preferences.getValue("layerview/show_infill");
+                    view_settings.only_show_top_layers = UM.Preferences.getValue("view/only_show_top_layers");
+                    view_settings.top_layer_count = UM.Preferences.getValue("view/top_layer_count");
+                }
+            }
+
+            Repeater {
+                model: Cura.ExtrudersModel{}
+                CheckBox {
+                    id: extrudersModelCheckBox
+                    checked: view_settings.extruder_opacities[index] > 0.5 || view_settings.extruder_opacities[index] == undefined || view_settings.extruder_opacities[index] == ""
+                    onClicked: {
+                        view_settings.extruder_opacities[index] = checked ? 1.0 : 0.0
+                        UM.Preferences.setValue("layerview/extruder_opacities", view_settings.extruder_opacities.join("|"));
+                    }
+                    visible: !UM.SimulationView.compatibilityMode
+                    enabled: index + 1 <= 4
+                    Rectangle {
+                        anchors.verticalCenter: parent.verticalCenter
+                        anchors.right: extrudersModelCheckBox.right
+                        anchors.rightMargin: UM.Theme.getSize("default_margin").width
+                        width: UM.Theme.getSize("layerview_legend_size").width
+                        height: UM.Theme.getSize("layerview_legend_size").height
+                        color: model.color
+                        radius: width / 2
+                        border.width: UM.Theme.getSize("default_lining").width
+                        border.color: UM.Theme.getColor("lining")
+                        visible: !view_settings.show_legend & !view_settings.show_gradient
+                    }
+                    Layout.fillWidth: true
+                    Layout.preferredHeight: UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("default_lining").height
+                    Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
+                    style: UM.Theme.styles.checkbox
+                    Label
+                    {
+                        text: model.name
+                        elide: Text.ElideRight
+                        color: UM.Theme.getColor("setting_control_text")
+                        font: UM.Theme.getFont("default")
+                        anchors.verticalCenter: parent.verticalCenter
+                        anchors.left: extrudersModelCheckBox.left;
+                        anchors.right: extrudersModelCheckBox.right;
+                        anchors.leftMargin: UM.Theme.getSize("checkbox").width + UM.Theme.getSize("default_margin").width /2
+                        anchors.rightMargin: UM.Theme.getSize("default_margin").width * 2
+                    }
+                }
+            }
+
+            Repeater {
+                model: ListModel {
+                    id: typesLegendModel
+                    Component.onCompleted:
+                    {
+                        typesLegendModel.append({
+                            label: catalog.i18nc("@label", "Show Travels"),
+                            initialValue: view_settings.show_travel_moves,
+                            preference: "layerview/show_travel_moves",
+                            colorId:  "layerview_move_combing"
+                        });
+                        typesLegendModel.append({
+                            label: catalog.i18nc("@label", "Show Helpers"),
+                            initialValue: view_settings.show_helpers,
+                            preference: "layerview/show_helpers",
+                            colorId:  "layerview_support"
+                        });
+                        typesLegendModel.append({
+                            label: catalog.i18nc("@label", "Show Shell"),
+                            initialValue: view_settings.show_skin,
+                            preference: "layerview/show_skin",
+                            colorId:  "layerview_inset_0"
+                        });
+                        typesLegendModel.append({
+                            label: catalog.i18nc("@label", "Show Infill"),
+                            initialValue: view_settings.show_infill,
+                            preference: "layerview/show_infill",
+                            colorId:  "layerview_infill"
+                        });
+                    }
+                }
+
+                CheckBox {
+                    id: legendModelCheckBox
+                    checked: model.initialValue
+                    onClicked: {
+                        UM.Preferences.setValue(model.preference, checked);
+                    }
+                    Rectangle {
+                        anchors.verticalCenter: parent.verticalCenter
+                        anchors.right: legendModelCheckBox.right
+                        anchors.rightMargin: UM.Theme.getSize("default_margin").width
+                        width: UM.Theme.getSize("layerview_legend_size").width
+                        height: UM.Theme.getSize("layerview_legend_size").height
+                        color: UM.Theme.getColor(model.colorId)
+                        border.width: UM.Theme.getSize("default_lining").width
+                        border.color: UM.Theme.getColor("lining")
+                        visible: view_settings.show_legend
+                    }
+                    Layout.fillWidth: true
+                    Layout.preferredHeight: UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("default_lining").height
+                    Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
+                    style: UM.Theme.styles.checkbox
+                    Label
+                    {
+                        text: label
+                        font: UM.Theme.getFont("default")
+                        elide: Text.ElideRight
+                        color: UM.Theme.getColor("setting_control_text")
+                        anchors.verticalCenter: parent.verticalCenter
+                        anchors.left: legendModelCheckBox.left;
+                        anchors.right: legendModelCheckBox.right;
+                        anchors.leftMargin: UM.Theme.getSize("checkbox").width + UM.Theme.getSize("default_margin").width /2
+                        anchors.rightMargin: UM.Theme.getSize("default_margin").width * 2
+                    }
+                }
+            }
+
+            CheckBox {
+                checked: view_settings.only_show_top_layers
+                onClicked: {
+                    UM.Preferences.setValue("view/only_show_top_layers", checked ? 1.0 : 0.0);
+                }
+                text: catalog.i18nc("@label", "Only Show Top Layers")
+                visible: UM.SimulationView.compatibilityMode
+                style: UM.Theme.styles.checkbox
+            }
+            CheckBox {
+                checked: view_settings.top_layer_count == 5
+                onClicked: {
+                    UM.Preferences.setValue("view/top_layer_count", checked ? 5 : 1);
+                }
+                text: catalog.i18nc("@label", "Show 5 Detailed Layers On Top")
+                visible: UM.SimulationView.compatibilityMode
+                style: UM.Theme.styles.checkbox
+            }
+
+            Repeater {
+                model: ListModel {
+                    id: typesLegendModelNoCheck
+                    Component.onCompleted:
+                    {
+                        typesLegendModelNoCheck.append({
+                            label: catalog.i18nc("@label", "Top / Bottom"),
+                            colorId: "layerview_skin",
+                        });
+                        typesLegendModelNoCheck.append({
+                            label: catalog.i18nc("@label", "Inner Wall"),
+                            colorId: "layerview_inset_x",
+                        });
+                    }
+                }
+
+                Label {
+                    text: label
+                    visible: view_settings.show_legend
+                    id: typesLegendModelLabel
+                    Rectangle {
+                        anchors.verticalCenter: parent.verticalCenter
+                        anchors.right: typesLegendModelLabel.right
+                        anchors.rightMargin: UM.Theme.getSize("default_margin").width
+                        width: UM.Theme.getSize("layerview_legend_size").width
+                        height: UM.Theme.getSize("layerview_legend_size").height
+                        color: UM.Theme.getColor(model.colorId)
+                        border.width: UM.Theme.getSize("default_lining").width
+                        border.color: UM.Theme.getColor("lining")
+                        visible: view_settings.show_legend
+                    }
+                    Layout.fillWidth: true
+                    Layout.preferredHeight: UM.Theme.getSize("layerview_row").height + UM.Theme.getSize("default_lining").height
+                    Layout.preferredWidth: UM.Theme.getSize("layerview_row").width
+                    color: UM.Theme.getColor("setting_control_text")
+                    font: UM.Theme.getFont("default")
+                }
+            }
+
+            // Text for the minimum, maximum and units for the feedrates and layer thickness
+            Rectangle {
+                id: gradientLegend
+                visible: view_settings.show_gradient
+                width: parent.width
+                height: UM.Theme.getSize("layerview_row").height
+                anchors {
+                    topMargin: UM.Theme.getSize("slider_layerview_margin").height
+                    horizontalCenter: parent.horizontalCenter
+                }
+
+                Label {
+                    text: minText()
+                    anchors.left: parent.left
+                    color: UM.Theme.getColor("setting_control_text")
+                    font: UM.Theme.getFont("default")
+
+                    function minText() {
+                        if (UM.SimulationView.layerActivity && CuraApplication.platformActivity) {
+                            // Feedrate selected
+                            if (UM.Preferences.getValue("layerview/layer_view_type") == 2) {
+                                return parseFloat(UM.SimulationView.getMinFeedrate()).toFixed(2)
+                            }
+                            // Layer thickness selected
+                            if (UM.Preferences.getValue("layerview/layer_view_type") == 3) {
+                                return parseFloat(UM.SimulationView.getMinThickness()).toFixed(2)
+                            }
+                        }
+                        return catalog.i18nc("@label","min")
+                    }
+                }
+
+                Label {
+                    text: unitsText()
+                    anchors.horizontalCenter: parent.horizontalCenter
+                    color: UM.Theme.getColor("setting_control_text")
+                    font: UM.Theme.getFont("default")
+
+                    function unitsText() {
+                        if (UM.SimulationView.layerActivity && CuraApplication.platformActivity) {
+                            // Feedrate selected
+                            if (UM.Preferences.getValue("layerview/layer_view_type") == 2) {
+                                return "mm/s"
+                            }
+                            // Layer thickness selected
+                            if (UM.Preferences.getValue("layerview/layer_view_type") == 3) {
+                                return "mm"
+                            }
+                        }
+                        return ""
+                    }
+                }
+
+                Label {
+                    text: maxText()
+                    anchors.right: parent.right
+                    color: UM.Theme.getColor("setting_control_text")
+                    font: UM.Theme.getFont("default")
+
+                    function maxText() {
+                        if (UM.SimulationView.layerActivity && CuraApplication.platformActivity) {
+                            // Feedrate selected
+                            if (UM.Preferences.getValue("layerview/layer_view_type") == 2) {
+                                return parseFloat(UM.SimulationView.getMaxFeedrate()).toFixed(2)
+                            }
+                            // Layer thickness selected
+                            if (UM.Preferences.getValue("layerview/layer_view_type") == 3) {
+                                return parseFloat(UM.SimulationView.getMaxThickness()).toFixed(2)
+                            }
+                        }
+                        return catalog.i18nc("@label","max")
+                    }
+                }
+            }
+
+            // Gradient colors for feedrate and thickness
+            Rectangle { // In QML 5.9 can be changed by LinearGradient
+                // Invert values because then the bar is rotated 90 degrees
+                id: gradient
+                visible: view_settings.show_gradient
+                anchors.left: parent.right
+                height: parent.width
+                width: UM.Theme.getSize("layerview_row").height * 1.5
+                border.width: UM.Theme.getSize("default_lining").width
+                border.color: UM.Theme.getColor("lining")
+                transform: Rotation {origin.x: 0; origin.y: 0; angle: 90}
+                gradient: Gradient {
+                    GradientStop {
+                        position: 0.000
+                        color: Qt.rgba(1, 0, 0, 1)
+                    }
+                    GradientStop {
+                        position: 0.25
+                        color: Qt.rgba(0.75, 0.5, 0.25, 1)
+                    }
+                    GradientStop {
+                        position: 0.5
+                        color: Qt.rgba(0.5, 1, 0.5, 1)
+                    }
+                    GradientStop {
+                        position: 0.75
+                        color: Qt.rgba(0.25, 0.5, 0.75, 1)
+                    }
+                    GradientStop {
+                        position: 1.0
+                        color: Qt.rgba(0, 0, 1, 1)
+                    }
+                }
+            }
+        }
+
+        Item {
+            id: slidersBox
+
+            width: parent.width
+            visible: UM.SimulationView.layerActivity && CuraApplication.platformActivity
+
+            anchors {
+                top: parent.bottom
+                topMargin: UM.Theme.getSize("slider_layerview_margin").height
+                left: parent.left
+            }
+
+            PathSlider {
+                id: pathSlider
+
+                width: parent.width
+                height: UM.Theme.getSize("slider_handle").width
+                anchors.left: parent.left
+                visible: !UM.SimulationView.compatibilityMode
+
+                // custom properties
+                handleValue: UM.SimulationView.currentPath
+                maximumValue: UM.SimulationView.numPaths
+                handleSize: UM.Theme.getSize("slider_handle").width
+                trackThickness: UM.Theme.getSize("slider_groove").width
+                trackColor: UM.Theme.getColor("slider_groove")
+                trackBorderColor: UM.Theme.getColor("slider_groove_border")
+                handleColor: UM.Theme.getColor("slider_handle")
+                handleActiveColor: UM.Theme.getColor("slider_handle_active")
+                rangeColor: UM.Theme.getColor("slider_groove_fill")
+
+                // update values when layer data changes
+                Connections {
+                    target: UM.SimulationView
+                    onMaxPathsChanged: pathSlider.setHandleValue(UM.SimulationView.currentPath)
+                    onCurrentPathChanged: pathSlider.setHandleValue(UM.SimulationView.currentPath)
+                }
+
+                // make sure the slider handlers show the correct value after switching views
+                Component.onCompleted: {
+                    pathSlider.setHandleValue(UM.SimulationView.currentPath)
+                }
+            }
+
+            LayerSlider {
+                id: layerSlider
+
+                width: UM.Theme.getSize("slider_handle").width
+                height: UM.Theme.getSize("layerview_menu_size").height
+
+                anchors {
+                    top: pathSlider.bottom
+                    topMargin: UM.Theme.getSize("slider_layerview_margin").height
+                    right: parent.right
+                    rightMargin: UM.Theme.getSize("slider_layerview_margin").width
+                }
+
+                // custom properties
+                upperValue: UM.SimulationView.currentLayer
+                lowerValue: UM.SimulationView.minimumLayer
+                maximumValue: UM.SimulationView.numLayers
+                handleSize: UM.Theme.getSize("slider_handle").width
+                trackThickness: UM.Theme.getSize("slider_groove").width
+                trackColor: UM.Theme.getColor("slider_groove")
+                trackBorderColor: UM.Theme.getColor("slider_groove_border")
+                upperHandleColor: UM.Theme.getColor("slider_handle")
+                lowerHandleColor: UM.Theme.getColor("slider_handle")
+                rangeHandleColor: UM.Theme.getColor("slider_groove_fill")
+                handleActiveColor: UM.Theme.getColor("slider_handle_active")
+                handleLabelWidth: UM.Theme.getSize("slider_layerview_background").width
+
+                // update values when layer data changes
+                Connections {
+                    target: UM.SimulationView
+                    onMaxLayersChanged: layerSlider.setUpperValue(UM.SimulationView.currentLayer)
+                    onMinimumLayerChanged: layerSlider.setLowerValue(UM.SimulationView.minimumLayer)
+                    onCurrentLayerChanged: layerSlider.setUpperValue(UM.SimulationView.currentLayer)
+                }
+
+                // make sure the slider handlers show the correct value after switching views
+                Component.onCompleted: {
+                    layerSlider.setLowerValue(UM.SimulationView.minimumLayer)
+                    layerSlider.setUpperValue(UM.SimulationView.currentLayer)
+                }
+            }
+
+            // Play simulation button
+            Button {
+                id: playButton
+                implicitWidth: UM.Theme.getSize("button").width * 0.75;
+                implicitHeight: UM.Theme.getSize("button").height * 0.75;
+                iconSource: "./resources/simulation_resume.svg"
+                style: UM.Theme.styles.tool_button
+                visible: !UM.SimulationView.compatibilityMode
+                anchors {
+                    horizontalCenter: layerSlider.horizontalCenter
+                    top: layerSlider.bottom
+                    topMargin: UM.Theme.getSize("slider_layerview_margin").width
+                }
+
+                property var status: 0  // indicates if it's stopped (0) or playing (1)
+
+                onClicked: {
+                    switch(status) {
+                        case 0: {
+                            resumeSimulation()
+                            break
+                        }
+                        case 1: {
+                            pauseSimulation()
+                            break
+                        }
+                    }
+                }
+
+                function pauseSimulation() {
+                    UM.SimulationView.setSimulationRunning(false)
+                    iconSource = "./resources/simulation_resume.svg"
+                    simulationTimer.stop()
+                    status = 0
+                }
+
+                function resumeSimulation() {
+                    UM.SimulationView.setSimulationRunning(true)
+                    iconSource = "./resources/simulation_pause.svg"
+                    simulationTimer.start()
+                }
+            }
+        }
+
+        Timer
+        {
+            id: simulationTimer
+            interval: 250
+            running: false
+            repeat: true
+            onTriggered: {
+                var currentPath = UM.SimulationView.currentPath
+                var numPaths = UM.SimulationView.numPaths
+                var currentLayer = UM.SimulationView.currentLayer
+                var numLayers = UM.SimulationView.numLayers
+                // When the user plays the simulation, if the path slider is at the end of this layer, we start
+                // the simulation at the beginning of the current layer.
+                if (playButton.status == 0)
+                {
+                    if (currentPath >= numPaths)
+                    {
+                        UM.SimulationView.setCurrentPath(0)
+                    }
+                    else
+                    {
+                        UM.SimulationView.setCurrentPath(currentPath+1)
+                    }
+                }
+                // If the simulation is already playing and we reach the end of a layer, then it automatically
+                // starts at the beginning of the next layer.
+                else
+                {
+                    if (currentPath >= numPaths)
+                    {
+                        // At the end of the model, the simulation stops
+                        if (currentLayer >= numLayers)
+                        {
+                            playButton.pauseSimulation()
+                        }
+                        else
+                        {
+                            UM.SimulationView.setCurrentLayer(currentLayer+1)
+                            UM.SimulationView.setCurrentPath(0)
+                        }
+                    }
+                    else
+                    {
+                        UM.SimulationView.setCurrentPath(currentPath+1)
+                    }
+                }
+                playButton.status = 1
+            }
+        }
+    }
+
+    FontMetrics {
+        id: fontMetrics
+        font: UM.Theme.getFont("default")
+    }
+}

plugins/SimulationView/SimulationViewProxy.py

@@ -0,0 +1,261 @@
+# Copyright (c) 2017 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtCore import QObject, pyqtSignal, pyqtProperty
+from UM.FlameProfiler import pyqtSlot
+from UM.Application import Application
+
+import SimulationView
+
+
+class SimulationViewProxy(QObject):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self._current_layer = 0
+        self._controller = Application.getInstance().getController()
+        self._controller.activeViewChanged.connect(self._onActiveViewChanged)
+        self._onActiveViewChanged()
+
+        self.is_simulationView_selected = False
+
+    currentLayerChanged = pyqtSignal()
+    currentPathChanged = pyqtSignal()
+    maxLayersChanged = pyqtSignal()
+    maxPathsChanged = pyqtSignal()
+    activityChanged = pyqtSignal()
+    globalStackChanged = pyqtSignal()
+    preferencesChanged = pyqtSignal()
+    busyChanged = pyqtSignal()
+
+    @pyqtProperty(bool, notify=activityChanged)
+    def layerActivity(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getActivity()
+        return False
+
+    @pyqtProperty(int, notify=maxLayersChanged)
+    def numLayers(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMaxLayers()
+        return 0
+
+    @pyqtProperty(int, notify=currentLayerChanged)
+    def currentLayer(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getCurrentLayer()
+        return 0
+
+    @pyqtProperty(int, notify=currentLayerChanged)
+    def minimumLayer(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMinimumLayer()
+        return 0
+
+    @pyqtProperty(int, notify=maxPathsChanged)
+    def numPaths(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMaxPaths()
+        return 0
+
+    @pyqtProperty(int, notify=currentPathChanged)
+    def currentPath(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getCurrentPath()
+        return 0
+
+    @pyqtProperty(int, notify=currentPathChanged)
+    def minimumPath(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMinimumPath()
+        return 0
+
+    @pyqtProperty(bool, notify=busyChanged)
+    def busy(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.isBusy()
+        return False
+
+    @pyqtProperty(bool, notify=preferencesChanged)
+    def compatibilityMode(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getCompatibilityMode()
+        return False
+
+    @pyqtSlot(int)
+    def setCurrentLayer(self, layer_num):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setLayer(layer_num)
+
+    @pyqtSlot(int)
+    def setMinimumLayer(self, layer_num):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setMinimumLayer(layer_num)
+
+    @pyqtSlot(int)
+    def setCurrentPath(self, path_num):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setPath(path_num)
+
+    @pyqtSlot(int)
+    def setMinimumPath(self, path_num):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setMinimumPath(path_num)
+
+    @pyqtSlot(int)
+    def setSimulationViewType(self, layer_view_type):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setSimulationViewisinstance(layer_view_type)
+
+    @pyqtSlot(result=int)
+    def getSimulationViewType(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getSimulationViewType()
+        return 0
+
+    @pyqtSlot(bool)
+    def setSimulationRunning(self, running):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setSimulationRunning(running)
+
+    @pyqtSlot(result=bool)
+    def getSimulationRunning(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.isSimulationRunning()
+        return False
+
+    @pyqtSlot(result=float)
+    def getMinFeedrate(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMinFeedrate()
+        return 0
+
+    @pyqtSlot(result=float)
+    def getMaxFeedrate(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMaxFeedrate()
+        return 0
+
+    @pyqtSlot(result=float)
+    def getMinThickness(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMinThickness()
+        return 0
+
+    @pyqtSlot(result=float)
+    def getMaxThickness(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getMaxThickness()
+        return 0
+
+    # Opacity 0..1
+    @pyqtSlot(int, float)
+    def setExtruderOpacity(self, extruder_nr, opacity):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setExtruderOpacity(extruder_nr, opacity)
+
+    @pyqtSlot(int)
+    def setShowTravelMoves(self, show):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setShowTravelMoves(show)
+
+    @pyqtSlot(int)
+    def setShowHelpers(self, show):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setShowHelpers(show)
+
+    @pyqtSlot(int)
+    def setShowSkin(self, show):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setShowSkin(show)
+
+    @pyqtSlot(int)
+    def setShowInfill(self, show):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            active_view.setShowInfill(show)
+
+    @pyqtProperty(int, notify=globalStackChanged)
+    def extruderCount(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+            return active_view.getExtruderCount()
+        return 0
+
+    def _layerActivityChanged(self):
+        self.activityChanged.emit()
+
+    def _onLayerChanged(self):
+        self.currentLayerChanged.emit()
+        self._layerActivityChanged()
+
+    def _onPathChanged(self):
+        self.currentPathChanged.emit()
+        self._layerActivityChanged()
+
+    def _onMaxLayersChanged(self):
+        self.maxLayersChanged.emit()
+
+    def _onMaxPathsChanged(self):
+        self.maxPathsChanged.emit()
+
+    def _onBusyChanged(self):
+        self.busyChanged.emit()
+
+    def _onActivityChanged(self):
+        self.activityChanged.emit()
+
+    def _onGlobalStackChanged(self):
+        self.globalStackChanged.emit()
+
+    def _onPreferencesChanged(self):
+        self.preferencesChanged.emit()
+
+    def _onActiveViewChanged(self):
+        active_view = self._controller.getActiveView()
+        if isinstance(active_view, SimulationView.SimulationView.SimulationView):
+
+            # remove other connection if once the SimulationView was created.
+            if self.is_simulationView_selected:
+                active_view.currentLayerNumChanged.disconnect(self._onLayerChanged)
+                active_view.currentPathNumChanged.disconnect(self._onPathChanged)
+                active_view.maxLayersChanged.disconnect(self._onMaxLayersChanged)
+                active_view.maxPathsChanged.disconnect(self._onMaxPathsChanged)
+                active_view.busyChanged.disconnect(self._onBusyChanged)
+                active_view.activityChanged.disconnect(self._onActivityChanged)
+                active_view.globalStackChanged.disconnect(self._onGlobalStackChanged)
+                active_view.preferencesChanged.disconnect(self._onPreferencesChanged)
+
+            self.is_simulationView_selected = True
+            active_view.currentLayerNumChanged.connect(self._onLayerChanged)
+            active_view.currentPathNumChanged.connect(self._onPathChanged)
+            active_view.maxLayersChanged.connect(self._onMaxLayersChanged)
+            active_view.maxPathsChanged.connect(self._onMaxPathsChanged)
+            active_view.busyChanged.connect(self._onBusyChanged)
+            active_view.activityChanged.connect(self._onActivityChanged)
+            active_view.globalStackChanged.connect(self._onGlobalStackChanged)
+            active_view.preferencesChanged.connect(self._onPreferencesChanged)

plugins/SimulationView/__init__.py

@@ -0,0 +1,26 @@
+# Copyright (c) 2017 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from PyQt5.QtQml import qmlRegisterSingletonType
+
+from UM.i18n import i18nCatalog
+from . import SimulationViewProxy, SimulationView
+
+catalog = i18nCatalog("cura")
+
+def getMetaData():
+    return {
+        "view": {
+            "name": catalog.i18nc("@item:inlistbox", "Simulation view"),
+            "view_panel": "SimulationView.qml",
+            "weight": 2
+        }
+    }
+
+def createSimulationViewProxy(engine, script_engine):
+    return SimulationViewProxy.SimulatorViewProxy()
+
+def register(app):
+    simulation_view = SimulationView.SimulationView()
+    qmlRegisterSingletonType(SimulationViewProxy.SimulationViewProxy, "UM", 1, 0, "SimulationView", simulation_view.getProxy)
+    return { "view": SimulationView.SimulationView()}

plugins/SimulationView/layers3d.shader

@@ -6,6 +6,10 @@ vertex41core =
     uniform highp mat4 u_modelMatrix;
     uniform highp mat4 u_viewProjectionMatrix;
     uniform lowp float u_active_extruder;
+    uniform lowp float u_max_feedrate;
+    uniform lowp float u_min_feedrate;
+    uniform lowp float u_max_thickness;
+    uniform lowp float u_min_thickness;
     uniform lowp int u_layer_view_type;
     uniform lowp vec4 u_extruder_opacity;  // currently only for max 4 extruders, others always visible
 
@@ -18,6 +22,8 @@ vertex41core =
     in highp vec2 a_line_dim;  // line width and thickness
     in highp float a_extruder;
     in highp float a_line_type;
+    in highp float a_feedrate;
+    in highp float a_thickness;
 
     out lowp vec4 v_color;
 
@@ -32,6 +38,15 @@ vertex41core =
     out highp vec3 f_vertex;
     out highp vec3 f_normal;
 
+    vec4 gradientColor(float abs_value, float min_value, float max_value)
+    {
+        float value = (abs_value - min_value)/(max_value - min_value);
+        float red = value;
+        float green = 1-abs(1-2*value);
+        float blue = 1-value;
+        return vec4(red, green, blue, 1.0);
+    }
+
     void main()
     {
         vec4 v1_vertex = a_vertex;
@@ -48,6 +63,12 @@ vertex41core =
             case 1:  // "Line type"
                 v_color = a_color;
                 break;
+            case 2:  // "Feedrate"
+                v_color = gradientColor(a_feedrate, u_min_feedrate, u_max_feedrate);
+                break;
+            case 3:  // "Layer thickness"
+                v_color = gradientColor(a_line_dim.y, u_min_thickness, u_max_thickness);
+                break;
         }
 
         v_vertex = world_space_vert.xyz;
@@ -247,6 +268,12 @@ u_show_helpers = 1
 u_show_skin = 1
 u_show_infill = 1
 
+u_min_feedrate = 0
+u_max_feedrate = 1
+
+u_min_thickness = 0
+u_max_thickness = 1
+
 [bindings]
 u_modelViewProjectionMatrix = model_view_projection_matrix
 u_modelMatrix = model_matrix
@@ -262,3 +289,5 @@ a_line_dim = line_dim
 a_extruder = extruder
 a_material_color = material_color
 a_line_type = line_type
+a_feedrate = feedrate
+a_thickness = thickness

plugins/SimulationView/layers3d_shadow.shader

@@ -0,0 +1,256 @@
+[shaders]
+vertex41core =
+    #version 410
+    uniform highp mat4 u_modelViewProjectionMatrix;
+
+    uniform highp mat4 u_modelMatrix;
+    uniform highp mat4 u_viewProjectionMatrix;
+    uniform lowp float u_active_extruder;
+    uniform lowp vec4 u_extruder_opacity;  // currently only for max 4 extruders, others always visible
+
+    uniform highp mat4 u_normalMatrix;
+
+    in highp vec4 a_vertex;
+    in lowp vec4 a_color;
+    in lowp vec4 a_grayColor;
+    in lowp vec4 a_material_color;
+    in highp vec4 a_normal;
+    in highp vec2 a_line_dim;  // line width and thickness
+    in highp float a_extruder;
+    in highp float a_line_type;
+
+    out lowp vec4 v_color;
+
+    out highp vec3 v_vertex;
+    out highp vec3 v_normal;
+    out lowp vec2 v_line_dim;
+    out highp int v_extruder;
+    out highp vec4 v_extruder_opacity;
+    out float v_line_type;
+
+    out lowp vec4 f_color;
+    out highp vec3 f_vertex;
+    out highp vec3 f_normal;
+
+    void main()
+    {
+        vec4 v1_vertex = a_vertex;
+        v1_vertex.y -= a_line_dim.y / 2;  // half layer down
+
+        vec4 world_space_vert = u_modelMatrix * v1_vertex;
+        gl_Position = world_space_vert;
+        // shade the color depending on the extruder index stored in the alpha component of the color
+
+        v_color = vec4(0.4, 0.4, 0.4, 0.9);    // default color for not current layer
+        v_vertex = world_space_vert.xyz;
+        v_normal = (u_normalMatrix * normalize(a_normal)).xyz;
+        v_line_dim = a_line_dim;
+        v_extruder = int(a_extruder);
+        v_line_type = a_line_type;
+        v_extruder_opacity = u_extruder_opacity;
+
+        // for testing without geometry shader
+        f_color = v_color;
+        f_vertex = v_vertex;
+        f_normal = v_normal;
+    }
+
+geometry41core =
+    #version 410
+
+    uniform highp mat4 u_viewProjectionMatrix;
+    uniform int u_show_travel_moves;
+    uniform int u_show_helpers;
+    uniform int u_show_skin;
+    uniform int u_show_infill;
+
+    layout(lines) in;
+    layout(triangle_strip, max_vertices = 26) out;
+
+    in vec4 v_color[];
+    in vec3 v_vertex[];
+    in vec3 v_normal[];
+    in vec2 v_line_dim[];
+    in int v_extruder[];
+    in vec4 v_extruder_opacity[];
+    in float v_line_type[];
+
+    out vec4 f_color;
+    out vec3 f_normal;
+    out vec3 f_vertex;
+
+    // Set the set of variables and EmitVertex
+    void myEmitVertex(vec3 vertex, vec4 color, vec3 normal, vec4 pos) {
+        f_vertex = vertex;
+        f_color = color;
+        f_normal = normal;
+        gl_Position = pos;
+        EmitVertex();
+    }
+
+    void main()
+    {
+        vec4 g_vertex_delta;
+        vec3 g_vertex_normal_horz;  // horizontal and vertical in respect to layers
+        vec4 g_vertex_offset_horz;  // vec4 to match gl_in[x].gl_Position
+        vec3 g_vertex_normal_vert;
+        vec4 g_vertex_offset_vert;
+        vec3 g_vertex_normal_horz_head;
+        vec4 g_vertex_offset_horz_head;
+
+        float size_x;
+        float size_y;
+
+        if ((v_extruder_opacity[0][v_extruder[0]] == 0.0) && (v_line_type[0] != 8) && (v_line_type[0] != 9)) {
+            return;
+        }
+        // See LayerPolygon; 8 is MoveCombingType, 9 is RetractionType
+        if ((u_show_travel_moves == 0) && ((v_line_type[0] == 8) || (v_line_type[0] == 9))) {
+            return;
+        }
+        if ((u_show_helpers == 0) && ((v_line_type[0] == 4) || (v_line_type[0] == 5) || (v_line_type[0] == 7) || (v_line_type[0] == 10))) {
+            return;
+        }
+        if ((u_show_skin == 0) && ((v_line_type[0] == 1) || (v_line_type[0] == 2) || (v_line_type[0] == 3))) {
+            return;
+        }
+        if ((u_show_infill == 0) && (v_line_type[0] == 6)) {
+            return;
+        }
+
+        if ((v_line_type[0] == 8) || (v_line_type[0] == 9)) {
+            // fixed size for movements
+            size_x = 0.05;
+        } else {
+            size_x = v_line_dim[1].x / 2 + 0.01;  // radius, and make it nicely overlapping
+        }
+        size_y = v_line_dim[1].y / 2 + 0.01;
+
+        g_vertex_delta = gl_in[1].gl_Position - gl_in[0].gl_Position;
+        g_vertex_normal_horz_head = normalize(vec3(-g_vertex_delta.x, -g_vertex_delta.y, -g_vertex_delta.z));
+        g_vertex_offset_horz_head = vec4(g_vertex_normal_horz_head * size_x, 0.0);
+
+        g_vertex_normal_horz = normalize(vec3(g_vertex_delta.z, g_vertex_delta.y, -g_vertex_delta.x));
+
+        g_vertex_offset_horz = vec4(g_vertex_normal_horz * size_x, 0.0); //size * g_vertex_normal_horz;
+        g_vertex_normal_vert = vec3(0.0, 1.0, 0.0);
+        g_vertex_offset_vert = vec4(g_vertex_normal_vert * size_y, 0.0);
+
+        if ((v_line_type[0] == 8) || (v_line_type[0] == 9)) {
+            // Travels: flat plane with pointy ends
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz_head + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position - g_vertex_offset_horz + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_horz + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz_head + g_vertex_offset_vert));
+
+            EndPrimitive();
+        } else {
+            // All normal lines are rendered as 3d tubes.
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_horz));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], -g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position - g_vertex_offset_horz));
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz));
+            myEmitVertex(v_vertex[0], v_color[0], -g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position - g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_horz));
+
+            EndPrimitive();
+
+            // left side
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_horz_head, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz_head));
+            myEmitVertex(v_vertex[0], v_color[0], -g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position - g_vertex_offset_horz));
+
+            EndPrimitive();
+
+            myEmitVertex(v_vertex[0], v_color[0], -g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position - g_vertex_offset_horz));
+            myEmitVertex(v_vertex[0], v_color[0], -g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[0].gl_Position - g_vertex_offset_vert));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_horz_head, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz_head));
+            myEmitVertex(v_vertex[0], v_color[0], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[0].gl_Position + g_vertex_offset_horz));
+
+            EndPrimitive();
+
+            // right side
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_horz));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_horz_head, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz_head));
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz));
+
+            EndPrimitive();
+
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz));
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_vert, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_vert));
+            myEmitVertex(v_vertex[1], v_color[1], -g_vertex_normal_horz_head, u_viewProjectionMatrix * (gl_in[1].gl_Position - g_vertex_offset_horz_head));
+            myEmitVertex(v_vertex[1], v_color[1], g_vertex_normal_horz, u_viewProjectionMatrix * (gl_in[1].gl_Position + g_vertex_offset_horz));
+
+            EndPrimitive();
+        }
+    }
+
+fragment41core =
+    #version 410
+    in lowp vec4 f_color;
+    in lowp vec3 f_normal;
+    in lowp vec3 f_vertex;
+
+    out vec4 frag_color;
+
+    uniform mediump vec4 u_ambientColor;
+    uniform highp vec3 u_lightPosition;
+
+    void main()
+    {
+        mediump vec4 finalColor = vec4(0.0);
+        float alpha = f_color.a;
+
+        finalColor.rgb += f_color.rgb * 0.3;
+
+        highp vec3 normal = normalize(f_normal);
+        highp vec3 light_dir = normalize(u_lightPosition - f_vertex);
+
+        // Diffuse Component
+        highp float NdotL = clamp(dot(normal, light_dir), 0.0, 1.0);
+        finalColor += (NdotL * f_color);
+        finalColor.a = alpha;  // Do not change alpha in any way
+
+        frag_color = finalColor;
+    }
+
+
+[defaults]
+u_active_extruder = 0.0
+u_extruder_opacity = [1.0, 1.0, 1.0, 1.0]
+
+u_specularColor = [0.4, 0.4, 0.4, 1.0]
+u_ambientColor = [0.3, 0.3, 0.3, 0.0]
+u_diffuseColor = [1.0, 0.79, 0.14, 1.0]
+u_shininess = 20.0
+
+u_show_travel_moves = 0
+u_show_helpers = 1
+u_show_skin = 1
+u_show_infill = 1
+
+[bindings]
+u_modelViewProjectionMatrix = model_view_projection_matrix
+u_modelMatrix = model_matrix
+u_viewProjectionMatrix = view_projection_matrix
+u_normalMatrix = normal_matrix
+u_lightPosition = light_0_position
+
+[attributes]
+a_vertex = vertex
+a_color = color
+a_grayColor = vec4(0.87, 0.12, 0.45, 1.0)
+a_normal = normal
+a_line_dim = line_dim
+a_extruder = extruder
+a_material_color = material_color
+a_line_type = line_type

plugins/SimulationView/layers_shadow.shader

@@ -0,0 +1,156 @@
+[shaders]
+vertex =
+    uniform highp mat4 u_modelViewProjectionMatrix;
+    uniform lowp float u_active_extruder;
+    uniform lowp float u_shade_factor;
+    uniform highp int u_layer_view_type;
+
+    attribute highp float a_extruder;
+    attribute highp float a_line_type;
+    attribute highp vec4 a_vertex;
+    attribute lowp vec4 a_color;
+    attribute lowp vec4 a_material_color;
+
+    varying lowp vec4 v_color;
+    varying float v_line_type;
+
+    void main()
+    {
+        gl_Position = u_modelViewProjectionMatrix * a_vertex;
+        // shade the color depending on the extruder index
+        v_color = vec4(0.4, 0.4, 0.4, 0.9);    // default color for not current layer;
+        // 8 and 9 are travel moves
+        // if ((a_line_type != 8.0) && (a_line_type != 9.0)) {
+        //     v_color = (a_extruder == u_active_extruder) ? v_color : vec4(u_shade_factor * v_color.rgb, v_color.a);
+        // }
+
+        v_line_type = a_line_type;
+    }
+
+fragment =
+    varying lowp vec4 v_color;
+    varying float v_line_type;
+
+    uniform int u_show_travel_moves;
+    uniform int u_show_helpers;
+    uniform int u_show_skin;
+    uniform int u_show_infill;
+
+    void main()
+    {
+        if ((u_show_travel_moves == 0) && (v_line_type >= 7.5) && (v_line_type <= 9.5)) {  // actually, 8 and 9
+            // discard movements
+            discard;
+        }
+        // support: 4, 5, 7, 10
+        if ((u_show_helpers == 0) && (
+            ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
+            ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
+            ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
+            ((v_line_type >= 4.5) && (v_line_type <= 5.5))
+            )) {
+            discard;
+        }
+        // skin: 1, 2, 3
+        if ((u_show_skin == 0) && (
+            (v_line_type >= 0.5) && (v_line_type <= 3.5)
+            )) {
+            discard;
+        }
+        // infill:
+        if ((u_show_infill == 0) && (v_line_type >= 5.5) && (v_line_type <= 6.5)) {
+            // discard movements
+            discard;
+        }
+
+        gl_FragColor = v_color;
+    }
+
+vertex41core =
+    #version 410
+    uniform highp mat4 u_modelViewProjectionMatrix;
+    uniform lowp float u_active_extruder;
+    uniform lowp float u_shade_factor;
+    uniform highp int u_layer_view_type;
+
+    in highp float a_extruder;
+    in highp float a_line_type;
+    in highp vec4 a_vertex;
+    in lowp vec4 a_color;
+    in lowp vec4 a_material_color;
+
+    out lowp vec4 v_color;
+    out float v_line_type;
+
+    void main()
+    {
+        gl_Position = u_modelViewProjectionMatrix * a_vertex;
+        v_color = vec4(0.4, 0.4, 0.4, 0.9);    // default color for not current layer
+        // if ((a_line_type != 8) && (a_line_type != 9)) {
+        //     v_color = (a_extruder == u_active_extruder) ? v_color : vec4(u_shade_factor * v_color.rgb, v_color.a);
+        // }
+
+        v_line_type = a_line_type;
+    }
+
+fragment41core =
+    #version 410
+    in lowp vec4 v_color;
+    in float v_line_type;
+    out vec4 frag_color;
+
+    uniform int u_show_travel_moves;
+    uniform int u_show_helpers;
+    uniform int u_show_skin;
+    uniform int u_show_infill;
+
+    void main()
+    {
+        if ((u_show_travel_moves == 0) && (v_line_type >= 7.5) && (v_line_type <= 9.5)) {  // actually, 8 and 9
+            // discard movements
+            discard;
+        }
+        // helpers: 4, 5, 7, 10
+        if ((u_show_helpers == 0) && (
+            ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
+            ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
+            ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
+            ((v_line_type >= 4.5) && (v_line_type <= 5.5))
+            )) {
+            discard;
+        }
+        // skin: 1, 2, 3
+        if ((u_show_skin == 0) && (
+            (v_line_type >= 0.5) && (v_line_type <= 3.5)
+            )) {
+            discard;
+        }
+        // infill:
+        if ((u_show_infill == 0) && (v_line_type >= 5.5) && (v_line_type <= 6.5)) {
+            // discard movements
+            discard;
+        }
+
+        frag_color = v_color;
+    }
+
+[defaults]
+u_active_extruder = 0.0
+u_shade_factor = 0.60
+u_layer_view_type = 0
+u_extruder_opacity = [1.0, 1.0, 1.0, 1.0]
+
+u_show_travel_moves = 0
+u_show_helpers = 1
+u_show_skin = 1
+u_show_infill = 1
+
+[bindings]
+u_modelViewProjectionMatrix = model_view_projection_matrix
+
+[attributes]
+a_vertex = vertex
+a_color = color
+a_extruder = extruder
+a_line_type = line_type
+a_material_color = material_color

plugins/SimulationView/plugin.json

@@ -1,8 +1,8 @@
 {
-    "name": "Layer View",
+    "name": "Simulation View",
     "author": "Ultimaker B.V.",
     "version": "1.0.0",
-    "description": "Provides the Layer view.",
+    "description": "Provides the Simulation view.",
     "api": 4,
     "i18n-catalog": "cura"
 }

plugins/SimulationView/resources/simulation_pause.svg

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   viewBox="0 0 30 30"
+   version="1.1"
+   id="svg4620"
+   sodipodi:docname="simulation_pause.svg"
+   inkscape:version="0.92.2 (5c3e80d, 2017-08-06)">
+  <metadata
+     id="metadata4626">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs4624" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1137"
+     id="namedview4622"
+     showgrid="false"
+     showguides="true"
+     inkscape:guide-bbox="true"
+     inkscape:zoom="22.250293"
+     inkscape:cx="8.1879003"
+     inkscape:cy="12.643765"
+     inkscape:window-x="2872"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg4620">
+    <sodipodi:guide
+       position="15,15"
+       orientation="1,0"
+       id="guide4628"
+       inkscape:locked="false"
+       inkscape:label=""
+       inkscape:color="rgb(0,0,255)" />
+    <sodipodi:guide
+       position="15,15"
+       orientation="0,1"
+       id="guide4630"
+       inkscape:locked="false"
+       inkscape:label=""
+       inkscape:color="rgb(0,0,255)" />
+  </sodipodi:namedview>
+  <rect
+     style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+     id="rect5192"
+     width="2"
+     height="20"
+     x="19"
+     y="5" />
+  <rect
+     style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+     id="rect5192-5"
+     width="2"
+     height="20"
+     x="9"
+     y="5" />
+</svg>

plugins/SimulationView/resources/simulation_resume.svg

@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   viewBox="0 0 30 30"
+   version="1.1"
+   id="svg3765"
+   sodipodi:docname="simulation_resume.svg"
+   inkscape:version="0.92.2 (5c3e80d, 2017-08-06)">
+  <metadata
+     id="metadata3771">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs3769" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1137"
+     id="namedview3767"
+     showgrid="false"
+     showguides="true"
+     inkscape:guide-bbox="true"
+     inkscape:zoom="23.327047"
+     inkscape:cx="10.788646"
+     inkscape:cy="14.67951"
+     inkscape:window-x="2872"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg3765">
+    <sodipodi:guide
+       position="15,15"
+       orientation="0,1"
+       id="guide4592"
+       inkscape:locked="false"
+       inkscape:label=""
+       inkscape:color="rgb(0,0,255)" />
+    <sodipodi:guide
+       position="15,15"
+       orientation="1,0"
+       id="guide4594"
+       inkscape:locked="false"
+       inkscape:label=""
+       inkscape:color="rgb(0,0,255)" />
+  </sodipodi:namedview>
+  <path
+     sodipodi:type="star"
+     id="path3783"
+     sodipodi:sides="3"
+     sodipodi:cx="12.732001"
+     sodipodi:cy="14.695877"
+     sodipodi:r1="13.891838"
+     sodipodi:r2="6.945919"
+     sodipodi:arg1="0"
+     sodipodi:arg2="1.0471976"
+     inkscape:flatsided="true"
+     inkscape:rounded="0"
+     inkscape:randomized="0"
+     d="m 26.623839,14.695877 -20.8377567,12.030685 0,-24.0613696 z"
+     inkscape:transform-center-x="-2.9211205"
+     style="fill:none;stroke:#000000;stroke-width:2.32790732;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+     transform="matrix(0.84110413,0,0,0.87756418,1.775541,2.1034247)" />
+</svg>

resources/themes/cura-dark/theme.json

@@ -133,6 +133,7 @@
         "slider_groove_fill": [245, 245, 245, 255],
         "slider_handle": [255, 255, 255, 255],
         "slider_handle_hover": [77, 182, 226, 255],
+        "slider_handle_active": [68, 192, 255, 255],
         "slider_handle_border": [39, 44, 48, 255],
         "slider_text_background": [255, 255, 255, 255],
 
@@ -194,6 +195,7 @@
         "layerview_move_combing": [0,  0,  255, 255],
         "layerview_move_retraction": [128,  128,  255, 255],
         "layerview_support_interface": [64, 192, 255, 255],
+        "layerview_nozzle": [181, 166, 66, 120],
 
         "material_compatibility_warning": [255, 255, 255, 255],
 

resources/themes/cura-light/styles.qml

@@ -269,6 +269,7 @@ QtObject {
                     arrowSize: Theme.getSize("button_tooltip_arrow").width
                     color: Theme.getColor("button_tooltip")
                     opacity: control.hovered ? 1.0 : 0.0;
+                    visible: control.text != ""
 
                     width: control.hovered ? button_tip.width + Theme.getSize("button_tooltip").width : 0
                     height: Theme.getSize("button_tooltip").height

resources/themes/cura-light/theme.json

@@ -183,6 +183,7 @@
         "slider_groove_fill": [127, 127, 127, 255],
         "slider_handle": [0, 0, 0, 255],
         "slider_handle_hover": [77, 182, 226, 255],
+        "slider_handle_active": [68, 192, 255, 255],
         "slider_handle_border": [39, 44, 48, 255],
         "slider_text_background": [255, 255, 255, 255],
 
@@ -271,7 +272,8 @@
         "layerview_support_infill": [0,  255,  255, 255],
         "layerview_move_combing": [0,  0,  255, 255],
         "layerview_move_retraction": [128,  128,  255, 255],
-        "layerview_support_interface": [64, 192, 255, 255]
+        "layerview_support_interface": [64, 192, 255, 255],
+        "layerview_nozzle": [181, 166, 66, 50]
     },
 
     "sizes": {