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Simplify code flow a bit

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Use if branches for the unhappy flow, so that it's clear that this behaves as an early-out. This also prevents the need for declaring variables out of scope, which is not an issue with Python anyway.
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Ghostkeeper 2018-01-04 17:23:43 +01:00
parent 564a97d5a8
commit 2c45efb70d
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1 changed files with 33 additions and 34 deletions
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11
cura/Scene/ConvexHullDecorator.py
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@ -160,10 +160,10 @@ class ConvexHullDecorator(SceneNodeDecorator):
return offset_hull return offset_hull
else: else:
if not self._node.getMeshData(): #Node has no mesh data, so just return an empty Polygon.
return Polygon([])
offset_hull = None offset_hull = None
mesh = None
world_transform = None
if self._node.getMeshData():
mesh = self._node.getMeshData() mesh = self._node.getMeshData()
world_transform = self._node.getWorldTransformation() world_transform = self._node.getWorldTransformation()
@ -177,7 +177,8 @@ 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 vertex_data and len(vertex_data) >= 4: if not vertex_data or len(vertex_data) < 4:
return Polygon([])
# 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.
@ -200,8 +201,6 @@ class ConvexHullDecorator(SceneNodeDecorator):
if len(vertex_data) >= 3: if len(vertex_data) >= 3:
convex_hull = hull.getConvexHull() convex_hull = hull.getConvexHull()
offset_hull = self._offsetHull(convex_hull) offset_hull = self._offsetHull(convex_hull)
else:
return Polygon([]) # Node has no mesh data, so just return an empty Polygon.
# Store the result in the cache # Store the result in the cache
self._2d_convex_hull_mesh = mesh self._2d_convex_hull_mesh = mesh