def surf2ctm(fsdir, outdir):
""" Convert a FreeSurfer surface to a compressed CTM surface.
Treat both hemishperes: 'lh' and 'rh'.
Parameters
----------
fsdir: str (mandatory)
the subject FreeSurfer home directory where the '*.white', '*.pial'
sufraces and the '*.aparc.annot' files can be found.
outdir: str
directory where a '*.ctm' file will be saved. The output file base
name will be the same as the input 'path_mesh' file.
Returns
-------
paths_ctm: list of str
the converted surfaces.
"""
# Treat both hemishperes
for hemi in ["lh", "rh"]:
# Guess file locations fom the FreeSurfer standard organization
path_white = os.path.join(fsdir, "surf", "{0}.white".format(hemi))
path_pial = os.path.join(fsdir, "surf", "{0}.pial".format(hemi))
path_annot = os.path.join(fsdir, "label",
"{0}.aparc.annot".format(hemi))
for path in (path_white, path_pial, path_annot):
if not os.path.isfile(path):
raise ValueError("'{0}' FreeSurfer standard file cannot be "
"found.".format(path))
# Load the surfaces
paths_ctm = []
for path_surf in (path_white, path_pial):
surface = TriSurface.load(path_surf, annotfile=path_annot)
# Convert the loaded surface in compressed CTM format
path_ctm = os.path.join(outdir,
os.path.basename(path_surf) + ".ctm")
paths_ctm.append(path_ctm)
colors = []
for label in surface.labels:
if label < 0:
label = 0
color = numpy.asarray(surface.metadata[label]["color"], dtype=float)
color /= 255.
colors.append(tuple(color))
pVerts = make_blob(surface.vertices, ctypes.c_float)
pFaces = make_blob(surface.triangles, ctypes.c_uint)
pNormals = ctypes.POINTER(ctypes.c_float)()
pColors = make_blob(colors, ctypes.c_float)
ctm = openctm.ctmNewContext(openctm.CTM_EXPORT)
openctm.ctmDefineMesh(ctm, pVerts, len(surface.vertices), pFaces,
len(surface.triangles), pNormals)
openctm.ctmAddAttribMap(ctm, pColors, "Color")
openctm.ctmSave(ctm, path_ctm)
openctm.ctmFreeContext(ctm)
return paths_ctm
def dump(self, filename = "mesh.ctm"): pVertex = blob.make_blob(self.vertex, ctypes.c_float) pTriangles = blob.make_blob(self.triangles, ctypes.c_uint) pNormals = ctypes.POINTER(ctypes.c_float)() ctm = openctm.ctmNewContext(openctm.CTM_EXPORT) openctm.ctmDefineMesh(ctm, pVertex, len(self.vertex), pTriangles, len(self.triangles), pNormals) openctm.ctmSave(ctm, filename) openctm.ctmFreeContext(ctm)
def vertices_triangles_to_openctm( vertices, triangles ):
import ctypes
import openctm
if not vertices or not triangles:
return ''
pVertices = make_blob(vertices, ctypes.c_float)
pTriangles = make_blob(triangles, ctypes.c_uint)
pNormals = ctypesPOINTER(ctypes.c_float)()
openctm.ctm = ctmNewContext(openctm.CTM_EXPORT)
openctm.ctmDefineMesh(ctm, pVertices, len(vertices), pTriangles, len(triangles), pNormals)
#Having to use a tmp file, because StringIO can't be easly pass
#Because the biding is expecting an string
#It is also possible to pass a c++ stream, but I don't know
#how to interface that with python
tf = tempfile.NamedTemporaryFile()
openctm/ctmSave(ctm, tf.name)
openctm.ctmFreeContext(ctm)
s = tf.read()
tf.close()
return s
def _exportCtm(self, fileName, exportOptions, exportAll):
exportNormals = exportOptions.get('normals', False)
exportUVs = exportOptions.get('uvs', False)
# TODO: implement colors export
exportColors = exportOptions.get('colors', False)
if exportAll:
dagIterator = OpenMaya.MItDag(OpenMaya.MItDag.kBreadthFirst,
OpenMaya.MFn.kGeometric)
else:
selection = OpenMaya.MGlobal.getActiveSelectionList()
dagIterator = OpenMaya.MItSelectionList(selection,
OpenMaya.MFn.kGeometric)
ctmindices = []
ctmvertices = []
ctmnormals = []
ctmtexcoords = []
indicesOffset = 0
while not dagIterator.isDone():
if exportAll:
dagPath = dagIterator.getPath()
else:
dagPath = dagIterator.getDagPath()
fnMesh = None
try:
fnMesh = OpenMaya.MFnMesh(dagPath)
except Exception as e:
dagIterator.next()
continue
meshPoints = fnMesh.getPoints(OpenMaya.MSpace.kWorld)
meshNormals = normals = None
if exportNormals:
meshNormals = fnMesh.getNormals()
normals = {}
UVSets = u = v = uvs = None
if exportUVs:
UVSets = fnMesh.getUVSetNames()
u, v = fnMesh.getUVs(UVSets[0])
uvs = {}
iterPolys = OpenMaya.MItMeshPolygon(dagPath)
offset = 0
maxPoints = 0
while not iterPolys.isDone():
if not iterPolys.hasValidTriangulation():
raise ValueError("The mesh has not valid triangulation")
# Not used
# uvSet = iterPolys.getUVSetNames()
polygonVertices = iterPolys.getVertices()
numTriangles = iterPolys.numTriangles()
offset = len(ctmvertices)
localindices = []
for i in range(numTriangles):
points, indices = iterPolys.getTriangle(i)
ctmindices.append(indicesOffset)
indicesOffset += 1
ctmindices.append(indicesOffset)
indicesOffset += 1
ctmindices.append(indicesOffset)
indicesOffset += 1
localindices.append(indices[0])
localindices.append(indices[1])
localindices.append(indices[2])
localIndex = []
for gt in range(len(indices)):
for gv in range(len(polygonVertices)):
if indices[gt] == polygonVertices[gv]:
localIndex.append(gv)
break
if exportNormals:
normals[indices[0]] = meshNormals[
iterPolys.normalIndex(localIndex[0])]
normals[indices[1]] = meshNormals[
iterPolys.normalIndex(localIndex[1])]
normals[indices[2]] = meshNormals[
iterPolys.normalIndex(localIndex[2])]
if exportUVs and iterPolys.hasUVs():
uvID = [0, 0, 0]
for vtxInPolygon in range(3):
uvID[vtxInPolygon] = iterPolys.getUVIndex(
localIndex[vtxInPolygon], UVSets[0])
uvs[indices[0]] = (u[uvID[0]], v[uvID[0]])
uvs[indices[1]] = (u[uvID[1]], v[uvID[1]])
uvs[indices[2]] = (u[uvID[2]], v[uvID[2]])
for i in localindices:
ctmvertices.append(meshPoints[i].x)
ctmvertices.append(meshPoints[i].y)
ctmvertices.append(meshPoints[i].z)
if exportNormals:
ctmnormals.append(normals[i][0])
ctmnormals.append(normals[i][1])
ctmnormals.append(normals[i][2])
if exportUVs and iterPolys.hasUVs():
ctmtexcoords.append(uvs[i][0])
ctmtexcoords.append(uvs[i][1])
iterPolys.next(None)
dagIterator.next()
pindices = cast((openctm.CTMuint * len(ctmindices))(),
POINTER(openctm.CTMuint))
pvertices = cast((openctm.CTMfloat * len(ctmvertices))(),
POINTER(openctm.CTMfloat))
if exportNormals:
pnormals = cast((openctm.CTMfloat * len(ctmnormals))(),
POINTER(openctm.CTMfloat))
else:
pnormals = None
if exportUVs and ctmtexcoords:
ptexcoords = cast((openctm.CTMfloat * len(ctmtexcoords))(),
POINTER(openctm.CTMfloat))
for i in range(len(ctmindices)):
pindices[i] = openctm.CTMuint(ctmindices[i])
for i in range(len(ctmvertices)):
pvertices[i] = openctm.CTMfloat(ctmvertices[i])
if exportNormals:
pnormals[i] = openctm.CTMfloat(ctmnormals[i])
if exportUVs and ctmtexcoords:
for i in range(len(ctmtexcoords)):
ptexcoords[i] = openctm.CTMfloat(ctmtexcoords[i])
context = openctm.ctmNewContext(openctm.CTM_EXPORT)
# openctm.ctmCompressionMethod(context, openctm.CTM_METHOD_MG2)
# Select compression level (0-9) - default 1
openctm.ctmCompressionLevel(context,
exportOptions.get("compressionLevel", 1))
comment = "Exported with OpenCTM exporter using Maya"
openctm.ctmFileComment(context, c_char_p(comment))
openctm.ctmDefineMesh(context, pvertices,
openctm.CTMuint(len(ctmvertices) / 3), pindices,
openctm.CTMuint(len(ctmindices) / 3), pnormals)
if exportUVs:
if ctmtexcoords:
openctm.ctmAddUVMap(context, ptexcoords, c_char_p("map1"),
c_char_p())
else:
print("[Warning] Export UVs selected but "
"there are no available UVs to export")
openctm.ctmSave(context, c_char_p(fileName))
openctm.ctmFreeContext(context)
e = openctm.ctmGetError(context)
if e != 0:
s = openctm.ctmErrorString(e)
print(s)
raise Exception(s)
def surf2ctm(fsdir, outdir):
""" Convert a FreeSurfer surface to a compressed CTM surface.
Treat both hemishperes: 'lh' and 'rh'.
Parameters
----------
fsdir: str (mandatory)
the subject FreeSurfer home directory where the '*.white', '*.pial'
sufraces and the '*.aparc.annot' files can be found.
outdir: str
directory where a '*.ctm' file will be saved. The output file base
name will be the same as the input 'path_mesh' file.
Returns
-------
paths_ctm: list of str
the converted surfaces.
"""
# Treat both hemishperes
for hemi in ["lh", "rh"]:
# Guess file locations fom the FreeSurfer standard organization
path_white = os.path.join(fsdir, "surf", "{0}.white".format(hemi))
path_pial = os.path.join(fsdir, "surf", "{0}.pial".format(hemi))
path_annot = os.path.join(fsdir, "label",
"{0}.aparc.annot".format(hemi))
for path in (path_white, path_pial, path_annot):
if not os.path.isfile(path):
raise ValueError("'{0}' FreeSurfer standard file cannot be "
"found.".format(path))
# Load the surfaces
paths_ctm = []
for path_surf in (path_white, path_pial):
surface = TriSurface.load(path_surf, annotfile=path_annot)
# Convert the loaded surface in compressed CTM format
path_ctm = os.path.join(outdir,
os.path.basename(path_surf) + ".ctm")
paths_ctm.append(path_ctm)
colors = []
for label in surface.labels:
if label < 0:
label = 0
color = numpy.asarray(surface.metadata[label]["color"],
dtype=float)
color /= 255.
colors.append(tuple(color))
pVerts = make_blob(surface.vertices, ctypes.c_float)
pFaces = make_blob(surface.triangles, ctypes.c_uint)
pNormals = ctypes.POINTER(ctypes.c_float)()
pColors = make_blob(colors, ctypes.c_float)
ctm = openctm.ctmNewContext(openctm.CTM_EXPORT)
openctm.ctmDefineMesh(ctm, pVerts, len(surface.vertices), pFaces,
len(surface.triangles), pNormals)
openctm.ctmAddAttribMap(ctm, pColors, "Color")
openctm.ctmSave(ctm, path_ctm)
openctm.ctmFreeContext(ctm)
return paths_ctm
def _exportCtm(self, fileName, exportOptions, exportAll):
exportNormals = exportOptions.get('normals', False)
exportUVs = exportOptions.get('uvs', False)
# TODO: implement colors export
exportColors = exportOptions.get('colors', False)
if exportAll:
dagIterator = OpenMaya.MItDag(
OpenMaya.MItDag.kBreadthFirst, OpenMaya.MFn.kGeometric)
else:
selection = OpenMaya.MGlobal.getActiveSelectionList()
dagIterator = OpenMaya.MItSelectionList(
selection, OpenMaya.MFn.kGeometric)
ctmindices = []
ctmvertices = []
ctmnormals = []
ctmtexcoords = []
indicesOffset = 0
while not dagIterator.isDone():
if exportAll:
dagPath = dagIterator.getPath()
else:
dagPath = dagIterator.getDagPath()
fnMesh = None
try:
fnMesh = OpenMaya.MFnMesh(dagPath)
except Exception as e:
dagIterator.next()
continue
meshPoints = fnMesh.getPoints(OpenMaya.MSpace.kWorld)
meshNormals = normals = None
if exportNormals:
meshNormals = fnMesh.getNormals()
normals = {}
UVSets = u = v = uvs = None
if exportUVs:
UVSets = fnMesh.getUVSetNames()
u, v = fnMesh.getUVs(UVSets[0])
uvs = {}
iterPolys = OpenMaya.MItMeshPolygon(dagPath)
offset = 0
maxPoints = 0
while not iterPolys.isDone():
if not iterPolys.hasValidTriangulation():
raise ValueError("The mesh has not valid triangulation")
# Not used
# uvSet = iterPolys.getUVSetNames()
polygonVertices = iterPolys.getVertices()
numTriangles = iterPolys.numTriangles()
offset = len(ctmvertices)
localindices = []
for i in range(numTriangles):
points, indices = iterPolys.getTriangle(i)
ctmindices.append(indicesOffset)
indicesOffset += 1
ctmindices.append(indicesOffset)
indicesOffset += 1
ctmindices.append(indicesOffset)
indicesOffset += 1
localindices.append(indices[0])
localindices.append(indices[1])
localindices.append(indices[2])
localIndex = []
for gt in range(len(indices)):
for gv in range(len(polygonVertices)):
if indices[gt] == polygonVertices[gv]:
localIndex.append(gv)
break
if exportNormals:
normals[indices[0]] = meshNormals[
iterPolys.normalIndex(localIndex[0])]
normals[indices[1]] = meshNormals[
iterPolys.normalIndex(localIndex[1])]
normals[indices[2]] = meshNormals[
iterPolys.normalIndex(localIndex[2])]
if exportUVs and iterPolys.hasUVs():
uvID = [0, 0, 0]
for vtxInPolygon in range(3):
uvID[vtxInPolygon] = iterPolys.getUVIndex(
localIndex[vtxInPolygon], UVSets[0])
uvs[indices[0]] = (u[uvID[0]], v[uvID[0]])
uvs[indices[1]] = (u[uvID[1]], v[uvID[1]])
uvs[indices[2]] = (u[uvID[2]], v[uvID[2]])
for i in localindices:
ctmvertices.append(meshPoints[i].x)
ctmvertices.append(meshPoints[i].y)
ctmvertices.append(meshPoints[i].z)
if exportNormals:
ctmnormals.append(normals[i][0])
ctmnormals.append(normals[i][1])
ctmnormals.append(normals[i][2])
if exportUVs and iterPolys.hasUVs():
ctmtexcoords.append(uvs[i][0])
ctmtexcoords.append(uvs[i][1])
iterPolys.next(None)
dagIterator.next()
pindices = cast((openctm.CTMuint * len(ctmindices))
(), POINTER(openctm.CTMuint))
pvertices = cast((openctm.CTMfloat * len(ctmvertices))
(), POINTER(openctm.CTMfloat))
if exportNormals:
pnormals = cast((openctm.CTMfloat * len(ctmnormals))
(), POINTER(openctm.CTMfloat))
else:
pnormals = None
if exportUVs and ctmtexcoords:
ptexcoords = cast((openctm.CTMfloat * len(ctmtexcoords))
(), POINTER(openctm.CTMfloat))
for i in range(len(ctmindices)):
pindices[i] = openctm.CTMuint(ctmindices[i])
for i in range(len(ctmvertices)):
pvertices[i] = openctm.CTMfloat(ctmvertices[i])
if exportNormals:
pnormals[i] = openctm.CTMfloat(ctmnormals[i])
if exportUVs and ctmtexcoords:
for i in range(len(ctmtexcoords)):
ptexcoords[i] = openctm.CTMfloat(ctmtexcoords[i])
context = openctm.ctmNewContext(openctm.CTM_EXPORT)
# openctm.ctmCompressionMethod(context, openctm.CTM_METHOD_MG2)
# Select compression level (0-9) - default 1
openctm.ctmCompressionLevel(
context, exportOptions.get("compressionLevel", 1))
comment = "Exported with OpenCTM exporter using Maya"
openctm.ctmFileComment(context, c_char_p(comment))
openctm.ctmDefineMesh(context, pvertices, openctm.CTMuint(
len(ctmvertices) / 3), pindices,
openctm.CTMuint(len(ctmindices) / 3), pnormals)
if exportUVs:
if ctmtexcoords:
openctm.ctmAddUVMap(context, ptexcoords,
c_char_p("map1"), c_char_p())
else:
print("[Warning] Export UVs selected but "
"there are no available UVs to export")
openctm.ctmSave(context, c_char_p(fileName))
openctm.ctmFreeContext(context)
e = openctm.ctmGetError(context)
if e != 0:
s = openctm.ctmErrorString(e)
print(s)
raise Exception(s)
def writer(self, fileObject, optionString, accessMode):
fileName = fileObject.fullName()
selection = OpenMaya.MSelectionList()
all = (accessMode == self.kExportAccessMode
or accessMode == self.kSaveAccessMode)
dagIterator = None
if (all):
dagIterator = OpenMaya.MItDag(OpenMaya.MItDag.kBreadthFirst,
OpenMaya.MFn.kGeometric)
else:
OpenMaya.MGlobal.getActiveSelectionList(selection)
dagIterator = OpenMaya.MItSelectionList(selection,
OpenMaya.MFn.kGeometric)
ctmindices = []
ctmvertices = []
ctmnormals = []
ctmtexcoords = []
indicesOffset = 0
while not dagIterator.isDone():
dagPath = OpenMaya.MDagPath()
if (all):
dagIterator.getPath(dagPath)
else:
dagIterator.getDagPath(dagPath)
fnMesh = None
try:
fnMesh = OpenMaya.MFnMesh(dagPath)
except:
dagIterator.next()
continue
meshPoints = OpenMaya.MPointArray()
fnMesh.getPoints(meshPoints, OpenMaya.MSpace.kWorld)
meshNormals = OpenMaya.MFloatVectorArray()
fnMesh.getNormals(meshNormals)
UVSets = []
fnMesh.getUVSetNames(UVSets)
u = OpenMaya.MFloatArray()
v = OpenMaya.MFloatArray()
fnMesh.getUVs(u, v, UVSets[0])
iterPolys = OpenMaya.MItMeshPolygon(dagPath)
offset = 0
maxPoints = 0
normals = {}
uvs = {}
while not iterPolys.isDone():
if not iterPolys.hasValidTriangulation():
return OpenMaya.MStatus.kFailiure
uvSet = []
iterPolys.getUVSetNames(uvSet)
polygonVertices = OpenMaya.MIntArray()
iterPolys.getVertices(polygonVertices)
numTrianglesPx = OpenMaya.MScriptUtil()
numTrianglesPx.createFromInt(0)
numTrianglesPtr = numTrianglesPx.asIntPtr()
iterPolys.numTriangles(numTrianglesPtr)
numTriangles = OpenMaya.MScriptUtil(numTrianglesPtr).asInt()
offset = len(ctmvertices)
localindices = []
for i in range(numTriangles):
points = OpenMaya.MPointArray()
indices = OpenMaya.MIntArray()
iterPolys.getTriangle(i, points, indices)
ctmindices.append(indicesOffset)
indicesOffset += 1
ctmindices.append(indicesOffset)
indicesOffset += 1
ctmindices.append(indicesOffset)
indicesOffset += 1
localindices.append(int(indices[0]))
localindices.append(int(indices[1]))
localindices.append(int(indices[2]))
localIndex = []
for gt in range(indices.length()):
for gv in range(polygonVertices.length()):
if indices[gt] == polygonVertices[gv]:
localIndex.append(gv)
break
normals[int(
indices[0])] = (float(
meshNormals[iterPolys.normalIndex(
localIndex[0])].x),
float(
meshNormals[iterPolys.normalIndex(
localIndex[0])].y),
float(
meshNormals[iterPolys.normalIndex(
localIndex[0])].z))
normals[int(
indices[1])] = (float(
meshNormals[iterPolys.normalIndex(
localIndex[1])].x),
float(
meshNormals[iterPolys.normalIndex(
localIndex[1])].y),
float(
meshNormals[iterPolys.normalIndex(
localIndex[1])].z))
normals[int(
indices[2])] = (float(
meshNormals[iterPolys.normalIndex(
localIndex[2])].x),
float(
meshNormals[iterPolys.normalIndex(
localIndex[2])].y),
float(
meshNormals[iterPolys.normalIndex(
localIndex[2])].z))
uvID = [0, 0, 0]
for vtxInPolygon in range(3):
uvIDPx = OpenMaya.MScriptUtil()
uvIDPx.createFromInt(0)
uvIDPtr = numTrianglesPx.asIntPtr()
iterPolys.getUVIndex(localIndex[vtxInPolygon], uvIDPtr,
UVSets[0])
uvID[vtxInPolygon] = OpenMaya.MScriptUtil(
uvIDPtr).asInt()
if (iterPolys.hasUVs()):
uvs[int(indices[0])] = (u[uvID[0]], v[uvID[0]])
uvs[int(indices[1])] = (u[uvID[1]], v[uvID[1]])
uvs[int(indices[2])] = (u[uvID[2]], v[uvID[2]])
for i in localindices:
ctmvertices.append(float(meshPoints[i].x))
ctmvertices.append(float(meshPoints[i].y))
ctmvertices.append(float(meshPoints[i].z))
ctmnormals.append(normals[i][0])
ctmnormals.append(normals[i][1])
ctmnormals.append(normals[i][2])
if (iterPolys.hasUVs()):
ctmtexcoords.append(uvs[i][0])
ctmtexcoords.append(uvs[i][1])
iterPolys.next()
dagIterator.next()
pindices = cast((openctm.CTMuint * len(ctmindices))(),
POINTER(openctm.CTMuint))
pvertices = cast((openctm.CTMfloat * len(ctmvertices))(),
POINTER(openctm.CTMfloat))
pnormals = cast((openctm.CTMfloat * len(ctmnormals))(),
POINTER(openctm.CTMfloat))
ptexcoords = cast((openctm.CTMfloat * len(ctmtexcoords))(),
POINTER(openctm.CTMfloat))
for i in range(len(ctmindices)):
pindices[i] = openctm.CTMuint(ctmindices[i])
for i in range(len(ctmvertices)):
pvertices[i] = openctm.CTMfloat(ctmvertices[i])
pnormals[i] = openctm.CTMfloat(ctmnormals[i])
for i in range(len(ctmtexcoords)):
ptexcoords[i] = openctm.CTMfloat(ctmtexcoords[i])
context = openctm.ctmNewContext(openctm.CTM_EXPORT)
comment = "Exported with OpenCTM exporter using Maya " + OpenMaya.MGlobal.mayaVersion(
)
openctm.ctmFileComment(context, c_char_p(comment))
openctm.ctmDefineMesh(context, pvertices,
openctm.CTMuint(len(ctmvertices) / 3), pindices,
openctm.CTMuint(len(ctmindices) / 3), pnormals)
openctm.ctmAddUVMap(context, ptexcoords, c_char_p(), c_char_p())
openctm.ctmSave(context, c_char_p(fileName))
openctm.ctmFreeContext(context)
e = openctm.ctmGetError(context)
if e != 0:
s = openctm.ctmErrorString(e)
print s
return OpenMaya.MStatus.kFailiure
else:
return OpenMaya.MStatus.kSuccess
def writer( self, fileObject, optionString, accessMode ):
fileName = fileObject.fullName()
selection = OpenMaya.MSelectionList()
all = (accessMode == self.kExportAccessMode or accessMode == self.kSaveAccessMode)
dagIterator = None
if(all):
dagIterator = OpenMaya.MItDag(OpenMaya.MItDag.kBreadthFirst, OpenMaya.MFn.kGeometric)
else:
OpenMaya.MGlobal.getActiveSelectionList( selection )
dagIterator = OpenMaya.MItSelectionList ( selection, OpenMaya.MFn.kGeometric )
ctmindices = []
ctmvertices = []
ctmnormals = []
ctmtexcoords = []
indicesOffset = 0
while not dagIterator.isDone():
dagPath = OpenMaya.MDagPath()
if (all):
dagIterator.getPath(dagPath)
else:
dagIterator.getDagPath(dagPath)
fnMesh = None
try:
fnMesh = OpenMaya.MFnMesh( dagPath )
except:
dagIterator.next()
continue
meshPoints = OpenMaya.MPointArray()
fnMesh.getPoints( meshPoints,OpenMaya.MSpace.kWorld )
meshNormals = OpenMaya.MFloatVectorArray()
fnMesh.getNormals(meshNormals)
UVSets = []
fnMesh.getUVSetNames( UVSets )
u = OpenMaya.MFloatArray()
v = OpenMaya.MFloatArray()
fnMesh.getUVs( u, v, UVSets[0] )
iterPolys = OpenMaya.MItMeshPolygon( dagPath )
offset = 0
maxPoints = 0
normals = {}
uvs = {}
while not iterPolys.isDone():
if not iterPolys.hasValidTriangulation():
return OpenMaya.MStatus.kFailiure
uvSet = []
iterPolys.getUVSetNames(uvSet)
polygonVertices = OpenMaya.MIntArray()
iterPolys.getVertices( polygonVertices )
numTrianglesPx = OpenMaya.MScriptUtil()
numTrianglesPx.createFromInt(0)
numTrianglesPtr = numTrianglesPx.asIntPtr()
iterPolys.numTriangles(numTrianglesPtr)
numTriangles = OpenMaya.MScriptUtil(numTrianglesPtr).asInt()
offset = len(ctmvertices)
localindices = []
for i in range( numTriangles ):
points = OpenMaya.MPointArray()
indices = OpenMaya.MIntArray()
iterPolys.getTriangle( i, points,indices)
ctmindices.append (indicesOffset)
indicesOffset += 1
ctmindices.append (indicesOffset)
indicesOffset += 1
ctmindices.append (indicesOffset)
indicesOffset += 1
localindices.append(int(indices[0]))
localindices.append(int(indices[1]))
localindices.append(int(indices[2]))
localIndex = []
for gt in range(indices.length()) :
for gv in range( polygonVertices.length() ):
if indices[gt] == polygonVertices[gv]:
localIndex.append( gv )
break
normals[int(indices[0])] = (float(meshNormals[iterPolys.normalIndex(localIndex[0])].x),float(meshNormals[iterPolys.normalIndex(localIndex[0])].y),float(meshNormals[iterPolys.normalIndex(localIndex[0])].z))
normals[int(indices[1])] = (float(meshNormals[iterPolys.normalIndex(localIndex[1])].x),float(meshNormals[iterPolys.normalIndex(localIndex[1])].y),float(meshNormals[iterPolys.normalIndex(localIndex[1])].z))
normals[int(indices[2])] = (float(meshNormals[iterPolys.normalIndex(localIndex[2])].x),float(meshNormals[iterPolys.normalIndex(localIndex[2])].y),float(meshNormals[iterPolys.normalIndex(localIndex[2])].z))
uvID = [0,0,0]
for vtxInPolygon in range(3):
uvIDPx = OpenMaya.MScriptUtil()
uvIDPx.createFromInt(0)
uvIDPtr = numTrianglesPx.asIntPtr()
iterPolys.getUVIndex( localIndex[vtxInPolygon], uvIDPtr, UVSets[0] )
uvID[vtxInPolygon] = OpenMaya.MScriptUtil(uvIDPtr).asInt()
if (iterPolys.hasUVs()):
uvs[int(indices[0])] = (u[uvID[0]], v[uvID[0]])
uvs[int(indices[1])] = (u[uvID[1]], v[uvID[1]])
uvs[int(indices[2])] = (u[uvID[2]], v[uvID[2]])
for i in localindices:
ctmvertices.append (float(meshPoints[i].x))
ctmvertices.append (float(meshPoints[i].y))
ctmvertices.append (float(meshPoints[i].z))
ctmnormals.append(normals[i][0])
ctmnormals.append(normals[i][1])
ctmnormals.append(normals[i][2])
if (iterPolys.hasUVs()):
ctmtexcoords.append(uvs[i][0])
ctmtexcoords.append(uvs[i][1])
iterPolys.next()
dagIterator.next()
pindices = cast((openctm.CTMuint * len(ctmindices))(), POINTER(openctm.CTMuint))
pvertices = cast((openctm.CTMfloat * len(ctmvertices))(), POINTER(openctm.CTMfloat))
pnormals = cast((openctm.CTMfloat * len(ctmnormals))(), POINTER(openctm.CTMfloat))
ptexcoords = cast((openctm.CTMfloat * len(ctmtexcoords))(), POINTER(openctm.CTMfloat))
for i in range(len(ctmindices)):
pindices[i] = openctm.CTMuint(ctmindices[i])
for i in range(len(ctmvertices)):
pvertices[i] = openctm.CTMfloat(ctmvertices[i])
pnormals[i] = openctm.CTMfloat(ctmnormals[i])
for i in range(len(ctmtexcoords)):
ptexcoords[i] = openctm.CTMfloat(ctmtexcoords[i])
context = openctm.ctmNewContext(openctm.CTM_EXPORT)
comment = "Exported with OpenCTM exporter using Maya " + OpenMaya.MGlobal.mayaVersion()
openctm.ctmFileComment(context, c_char_p(comment))
openctm.ctmDefineMesh(context, pvertices, openctm.CTMuint(len(ctmvertices)/3), pindices, openctm.CTMuint(len(ctmindices)/3), pnormals)
openctm.ctmAddUVMap (context, ptexcoords,c_char_p() , c_char_p())
openctm.ctmSave(context, c_char_p(fileName))
openctm.ctmFreeContext(context)
e = openctm.ctmGetError(context)
if e != 0:
s = openctm.ctmErrorString(e)
print s
return OpenMaya.MStatus.kFailiure
else:
return OpenMaya.MStatus.kSuccess