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Numpy magic to speed up the expansion of indices-to-vectors to just vectors. CURA-2548

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Sending models to engine that have indices is slow
This commit is contained in:
Simon Edwards 2016-11-29 15:13:10 +01:00
parent 7082ff7d68
commit b9dd2ef6f9
1 changed files with 6 additions and 11 deletions
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17
plugins/CuraEngineBackend/StartSliceJob.py
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@ -163,22 +163,17 @@ class StartSliceJob(Job):
obj.id = id(object)
verts = mesh_data.getVertices()
indices = mesh_data.getIndices()
if indices is not None:
#TODO: This is a very slow way of doing it! It also locks up the GUI.
flat_vert_list = []
for face in indices:
for vert_index in face:
flat_vert_list.append(verts[vert_index])
Job.yieldThread()
verts = numpy.array(flat_vert_list)
flat_verts = numpy.take(verts, indices.flatten(), axis=0)
else:
verts = numpy.array(verts)
flat_verts = numpy.array(verts)
# Convert from Y up axes to Z up axes. Equals a 90 degree rotation.
verts[:, [1, 2]] = verts[:, [2, 1]]
verts[:, 1] *= -1
flat_verts[:, [1, 2]] = flat_verts[:, [2, 1]]
flat_verts[:, 1] *= -1
obj.vertices = verts
obj.vertices = flat_verts
self._handlePerObjectSettings(object, obj)