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Document z fighting hack

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fieldOfView 2016-11-29 10:44:10 +01:00
parent dc33d96e8c
commit ff0f63eb94
1 changed files with 9 additions and 7 deletions
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16
cura/BuildVolume.py
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@ -183,6 +183,8 @@ class BuildVolume(SceneNode):
min_d = -self._depth / 2 min_d = -self._depth / 2
max_d = self._depth / 2 max_d = self._depth / 2
z_fight_distance = 0.2 # Distance between buildplate and disallowed area meshes to prevent z-fighting
if self._shape != "elliptic": if self._shape != "elliptic":
# Outline 'cube' of the build volume # Outline 'cube' of the build volume
mb = MeshBuilder() mb = MeshBuilder()
@ -206,10 +208,10 @@ class BuildVolume(SceneNode):
# Build plate grid mesh # Build plate grid mesh
mb = MeshBuilder() mb = MeshBuilder()
mb.addQuad( mb.addQuad(
Vector(min_w, min_h - 0.2, min_d), Vector(min_w, min_h - z_fight_distance, min_d),
Vector(max_w, min_h - 0.2, min_d), Vector(max_w, min_h - z_fight_distance, min_d),
Vector(max_w, min_h - 0.2, max_d), Vector(max_w, min_h - z_fight_distance, max_d),
Vector(min_w, min_h - 0.2, max_d) Vector(min_w, min_h - z_fight_distance, max_d)
) )
for n in range(0, 6): for n in range(0, 6):
@ -226,15 +228,15 @@ class BuildVolume(SceneNode):
aspect = self._height / self._width aspect = self._height / self._width
scale_matrix.compose(Vector(1, 1, aspect)) scale_matrix.compose(Vector(1, 1, aspect))
mb = MeshBuilder() mb = MeshBuilder()
mb.addArc(max_w, Vector.Unit_Y, center = (0, min_h - 0.2, 0), color = self.VolumeOutlineColor) mb.addArc(max_w, Vector.Unit_Y, center = (0, min_h - z_fight_distance, 0), color = self.VolumeOutlineColor)
mb.addArc(max_w, Vector.Unit_Y, center = (0, max_h, 0), color = self.VolumeOutlineColor) mb.addArc(max_w, Vector.Unit_Y, center = (0, max_h, 0), color = self.VolumeOutlineColor)
self.setMeshData(mb.build().getTransformed(scale_matrix)) self.setMeshData(mb.build().getTransformed(scale_matrix))
# Build plate grid mesh # Build plate grid mesh
mb = MeshBuilder() mb = MeshBuilder()
mb.addArc(max_w, Vector.Unit_Y, center = Vector(0, min_h - 0.2, 0)) mb.addArc(max_w, Vector.Unit_Y, center = Vector(0, min_h - z_fight_distance, 0))
sections = mb.getVertexCount() sections = mb.getVertexCount()
mb.addVertex(0, min_h - 0.2, 0) mb.addVertex(0, min_h - z_fight_distance, 0)
for n in range(0, sections-1): for n in range(0, sections-1):
mb.addIndices([sections, n + 1, n]) mb.addIndices([sections, n + 1, n])