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Account for getConvexHullTransformedVertices returning None

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It returns None if there are no vertices.
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Ghostkeeper 2018-01-04 17:20:57 +01:00
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cura/Scene/ConvexHullDecorator.py
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@ -177,7 +177,7 @@ class ConvexHullDecorator(SceneNodeDecorator):
# Do not throw away vertices: the convex hull may be too small and objects can collide. # Do not throw away vertices: the convex hull may be too small and objects can collide.
# vertex_data = vertex_data[vertex_data[:,1] >= -0.01] # vertex_data = vertex_data[vertex_data[:,1] >= -0.01]
if len(vertex_data) >= 4: if vertex_data and len(vertex_data) >= 4:
# Round the vertex data to 1/10th of a mm, then remove all duplicate vertices # Round the vertex data to 1/10th of a mm, then remove all duplicate vertices
# This is done to greatly speed up further convex hull calculations as the convex hull # This is done to greatly speed up further convex hull calculations as the convex hull
# becomes much less complex when dealing with highly detailed models. # becomes much less complex when dealing with highly detailed models.