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Copyright 2013 Pixar
Licensed under the Apache License, Version 2.0 (the "Apache License")
with the following modification; you may not use this file except in
compliance with the Apache License and the following modification to it:
Section 6. Trademarks. is deleted and replaced with:
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor
and its affiliates, except as required to comply with Section 4(c) of
the License and to reproduce the content of the NOTICE file.
You may obtain a copy of the Apache License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the Apache License with the above modification is
distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the Apache License for the specific
language governing permissions and limitations under the Apache License.
140 lines
4.0 KiB
Python
140 lines
4.0 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2013 Pixar
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#
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# Licensed under the Apache License, Version 2.0 (the "Apache License")
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# with the following modification; you may not use this file except in
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# compliance with the Apache License and the following modification to it:
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# Section 6. Trademarks. is deleted and replaced with:
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#
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# 6. Trademarks. This License does not grant permission to use the trade
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# names, trademarks, service marks, or product names of the Licensor
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# and its affiliates, except as required to comply with Section 4(c) of
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# the License and to reproduce the content of the NOTICE file.
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#
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# You may obtain a copy of the Apache License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the Apache License with the above modification is
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# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the Apache License for the specific
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# language governing permissions and limitations under the Apache License.
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#
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"""
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Example
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Description:
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Create a Maya Mesh using OpenMaya
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in Maya's python editor :
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import example_createMesh
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reload(example_createMesh)
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example_createMesh.readPolyFile('/host/devel/rtc3/trees/dev/amber/bin/pbr2/script')
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"""
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from maya import OpenMaya as om
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from itertools import chain
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import maya.cmds as cmds
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def getDagPath(nodeName):
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"""Get an MDagPath for the associated node name
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"""
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selList = om.MSelectionList()
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selList.add(nodeName)
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dagPath = om.MDagPath()
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selList.getDagPath(0, dagPath)
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return dagPath
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def convertToMIntArray(listOfInts):
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newMIntArray = om.MIntArray(len(listOfInts))
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for i in range(len(listOfInts)):
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val = listOfInts[i]
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newMIntArray.set(val, i)
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return newMIntArray
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def convertToMPointArray(listOfVertexTuples):
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newMPointArray = om.MPointArray(len(listOfVertexTuples))
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for i in range(len(listOfVertexTuples)):
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v = listOfVertexTuples[i]
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newMPointArray.set(i, v[0], v[1], v[2], 1.0)
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return newMPointArray
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def createMesh(vertices, polygons, parent=None):
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'''Create a mesh with the specified vertices and polygons
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'''
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# The parameters used in MFnMesh.create() can all be derived from the
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# input vertices and polygon lists
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numVertices = len(vertices)
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numPolygons = len(polygons)
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verticesM = convertToMPointArray(vertices)
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polygonCounts = [len(i) for i in polygons]
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polygonCountsM = convertToMIntArray(polygonCounts)
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# Flatten the list of lists
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# Reference: http://stackoverflow.com/questions/952914/making-a-flat-list-out-of-list-of-lists-in-python
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polygonConnects = list(chain.from_iterable(polygons))
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polygonConnectsM = convertToMIntArray(polygonConnects)
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# Determine parent
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if parent == None:
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parentM = om.MObject()
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else:
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parentM = getDagPath(parent).node()
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# Create Mesh
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newMesh = om.MFnMesh()
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newTransformOrShape = newMesh.create(
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numVertices,
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numPolygons,
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verticesM,
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polygonCountsM,
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polygonConnectsM,
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parentM)
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dagpath = om.MDagPath()
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om.MDagPath.getAPathTo( newTransformOrShape, dagpath )
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# Assign the default shader to the mesh.
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cmds.sets(
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dagpath.fullPathName(),
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edit=True,
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forceElement='initialShadingGroup')
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return dagpath.partialPathName()
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def readPolyFile(path):
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polys = ''
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try:
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with open(path, 'r') as f:
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polys = ''
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for line in f.readlines():
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polys += line.rstrip()
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except:
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print 'Cannot read '+str(path)
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polys = eval(polys)
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tx = 0.0
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ty = 0.0
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for poly in polys:
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verts = poly['verts']
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faces = poly['faces']
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parent = None
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dagpath = createMesh(verts, faces, parent)
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cmds.move( tx, ty, 0, dagpath, absolute=True )
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tx+=4.0
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if tx > 16.0:
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tx=0.0
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ty+=4.0
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