Add 'plugins/LayerView/' from commit 'ffcf5c7885'

git-subtree-dir: plugins/LayerView
git-subtree-mainline: bda10b5ce5
git-subtree-split: ffcf5c7885

plugins/LayerView/LayerView.py

@@ -0,0 +1,51 @@
+from UM.View.View import View
+from UM.View.Renderer import Renderer
+from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
+from UM.Resources import Resources
+
+## View used to display g-code paths.
+class LayerView(View):
+    def __init__(self):
+        super().__init__()
+        self._material = None
+        self._num_layers = 0
+        self._layer_percentage = 0 # what percentage of layers need to be shown (SLider gives value between 0 - 100)
+
+    def beginRendering(self):
+        scene = self.getController().getScene()
+        renderer = self.getRenderer()
+        renderer.setRenderSelection(False)
+
+        if not self._material:
+            self._material = renderer.createMaterial(Resources.getPath(Resources.ShadersLocation, 'basic.vert'), Resources.getPath(Resources.ShadersLocation, 'vertexcolor.frag'))
+            self._material.setUniformValue("u_color", [1.0, 0.0, 0.0, 1.0])
+
+        for node in DepthFirstIterator(scene.getRoot()):
+            if not node.render(renderer):
+                if node.getMeshData() and node.isVisible():
+                    try:
+                        layer_data = node.getMeshData().layerData
+                    except AttributeError:
+                        continue
+
+                    if self._layer_percentage < 100:
+                        start = 0
+                        end_layer = round(len(layer_data.getLayers()) * (self._layer_percentage / 100))
+                        end = 0
+
+                        element_counts = layer_data.getElementCounts()
+                        for layer, counts in element_counts.items():
+                            end += sum(counts)
+
+                            if layer >= end_layer:
+                                break
+
+                        renderer.queueNode(node, mesh = layer_data, material = self._material, mode = Renderer.RenderLines, start = start, end = end)
+                    else:
+                        renderer.queueNode(node, mesh = layer_data, material = self._material, mode = Renderer.RenderLines)
+    
+    def setLayer(self, value):
+        self._layer_percentage = value
+        
+    def endRendering(self):
+        pass