Add line thickness and feedrate to the data sent from the backend

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/ProcessSlicedLayersJob.py

@@ -128,10 +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.
+                line_thicknesses = numpy.fromstring(polygon.line_thickness, dtype="f4")  # Convert bytearray to numpy array
-                # Currently the infill layer thickness also translates to line width
+                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_thicknesses = numpy.zeros(line_widths.shape, dtype="f4")
+
-                line_thicknesses[:] = layer.thickness / 1000  # from micrometer to millimeter
+                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
@@ -146,7 +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)

plugins/GCodeReader/GCodeReader.py

@@ -114,9 +114,11 @@ 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)
+        line_feedrates = numpy.empty((count - 1, 1), numpy.float32)
         # TODO: need to calculate actual line width based on E values
         line_widths[:, 0] = 0.35  # Just a guess
-        line_thicknesses[:, 0] = layer_thickness
+        line_thicknesses[:, 0] = layer_thickness    # TODO Same for all, but it should be calculated from the layer height differences
+        line_feedrates[:, 0] = 50    # TODO Now we use 50mm/s as a demo, it should be obtained from the GCode
         points = numpy.empty((count, 3), numpy.float32)
         i = 0
         for point in path:
@@ -127,7 +129,7 @@ class GCodeReader(MeshReader):
                     line_widths[i - 1] = 0.1
             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)