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Reduce time spent in "Preparing to slice" by optimizing vertex data sending

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This effectively is a limited form of MeshData::getTransformed that ignores
normals and performs a faster transformation.

Contributes to CURA-2687
This commit is contained in:
Arjen Hiemstra 2016-12-06 17:35:26 +01:00
parent 976f822158
commit b1e8b01549
1 changed files with 14 additions and 8 deletions
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20
plugins/CuraEngineBackend/StartSliceJob.py
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@ -157,22 +157,28 @@ class StartSliceJob(Job):
if group[0].getParent().callDecoration("isGroup"): if group[0].getParent().callDecoration("isGroup"):
self._handlePerObjectSettings(group[0].getParent(), group_message) self._handlePerObjectSettings(group[0].getParent(), group_message)
for object in group: for object in group:
mesh_data = object.getMeshData().getTransformed(object.getWorldTransformation()) mesh_data = object.getMeshData()
rot_scale = object.getWorldTransformation().getTransposed().getData()[0:3, 0:3]
translate = object.getWorldTransformation().getData()[:3, 3]
# This effectively performs a limited form of MeshData.getTransformed that ignores normals.
verts = mesh_data.getVertices()
verts = verts.dot(rot_scale)
verts += translate
# Convert from Y up axes to Z up axes. Equals a 90 degree rotation.
verts[:, [1, 2]] = verts[:, [2, 1]]
verts[:, 1] *= -1
obj = group_message.addRepeatedMessage("objects") obj = group_message.addRepeatedMessage("objects")
obj.id = id(object) obj.id = id(object)
verts = mesh_data.getVertices()
indices = mesh_data.getIndices()
indices = mesh_data.getIndices()
if indices is not None: if indices is not None:
flat_verts = numpy.take(verts, indices.flatten(), axis=0) flat_verts = numpy.take(verts, indices.flatten(), axis=0)
else: else:
flat_verts = numpy.array(verts) flat_verts = numpy.array(verts)
# Convert from Y up axes to Z up axes. Equals a 90 degree rotation.
flat_verts[:, [1, 2]] = flat_verts[:, [2, 1]]
flat_verts[:, 1] *= -1
obj.vertices = flat_verts obj.vertices = flat_verts
self._handlePerObjectSettings(object, obj) self._handlePerObjectSettings(object, obj)