def getObjectBasisVectors( obj ): ''' returns 3 world space orthonormal basis vectors that represent the orientation of the given object ''' xPrime, yPrime, zPrime = api.getObjectBases( obj ) return Vector([xPrime.x, xPrime.y, xPrime.z]), Vector([yPrime.x, yPrime.y, yPrime.z]), Vector([zPrime.x, zPrime.y, zPrime.z])
def getObjectBasisVectors(obj):
'''
returns 3 world space orthonormal basis vectors that represent the orientation of the given object
'''
xPrime, yPrime, zPrime = api.getObjectBases(obj)
return Vector([xPrime.x, xPrime.y, xPrime.z
]), Vector([yPrime.x, yPrime.y, yPrime.z
]), Vector([zPrime.x, zPrime.y, zPrime.z])
def findVertsInVolume(meshes, volume):
"""
returns a dict containing meshes and the list of vert attributes contained
within the given <volume>
"""
# define a super simple vector class to additionally record vert id with position...
class VertPos(vectors.Vector):
def __init__(self, x, y, z, vertIdx=None):
vectors.Vector.__init__(self, [x, y, z])
self.id = vertIdx
# this dict provides the functions used to determine whether a point is inside a volume or not
insideDeterminationMethod = {
ExportManager.kVOLUME_SPHERE: isPointInSphere,
ExportManager.kVOLUME_CUBE: isPointInCube,
}
# if there are any uniform overrides for the contained method (called if the volume's scale is
# unity) it can be registered here
insideDeterminationIfUniform = {
ExportManager.kVOLUME_SPHERE: isPointInUniformSphere,
ExportManager.kVOLUME_CUBE: isPointInCube,
}
# grab any data we're interested in for the volume
volumePos = vectors.Vector(cmd.xform(volume, q=True, ws=True, rp=True))
volumeScale = map(abs, cmd.getAttr("%s.s" % volume)[0])
volumeBasis = [Vector((v.x, v.y, v.z)) for v in api.getObjectBases(volume)]
# make sure the basis is normalized
volumeBasis = [v.normalize() for v in volumeBasis]
# now lets determine the volume type
type = ExportManager.kVOLUME_SPHERE
try:
type = int(cmd.getAttr("%s.exportVolume" % volume))
except TypeError:
pass
isContainedMethod = insideDeterminationMethod[type]
print "method for interior volume determination", isContainedMethod.__name__
sx = volumeScale[0]
if vectors.Vector(volumeScale).within((sx, sx, sx)):
try:
isContainedMethod = insideDeterminationIfUniform[type]
except KeyError:
pass
# now lets iterate over the geometry
meshVertsWithin = {}
for mesh in meshes:
# its possible to pass not a mesh but a component in - this is totally valid, as the polyListComponentConversion
# should make sure we're always dealing with verts no matter what, but we still need to make sure the dict key is
# the actual name of the mesh - hence this bit of jiggery pokery
dotIdx = mesh.rfind(".")
meshName = mesh if dotIdx == -1 else mesh[:dotIdx]
meshPositions = []
meshVertsWithin[meshName] = meshPositions
# this gives us a huge list of floats - each sequential triple is the position of a vert
try:
# if this complains its most likely coz the geo is bad - so skip it...
vertPosList = cmd.xform(
cmd.ls(cmd.polyListComponentConversion(mesh, toVertex=True), fl=True), q=True, t=True, ws=True
)
except TypeError:
continue
count = len(vertPosList) / 3
for idx in xrange(count):
pos = VertPos(vertPosList.pop(0), vertPosList.pop(0), vertPosList.pop(0), idx)
contained = isContainedMethod(pos, volumePos, volumeScale, volumeBasis)
if contained:
pos.weight = contained[1]
meshPositions.append(pos)
return meshVertsWithin
def findVertsInVolume(meshes, volume):
'''
returns a dict containing meshes and the list of vert attributes contained
within the given <volume>
'''
#define a super simple vector class to additionally record vert id with position...
class VertPos(vectors.Vector):
def __init__(self, x, y, z, vertIdx=None):
vectors.Vector.__init__(self, [x, y, z])
self.id = vertIdx
#this dict provides the functions used to determine whether a point is inside a volume or not
insideDeterminationMethod = {
ExportManager.kVOLUME_SPHERE: isPointInSphere,
ExportManager.kVOLUME_CUBE: isPointInCube
}
#if there are any uniform overrides for the contained method (called if the volume's scale is
#unity) it can be registered here
insideDeterminationIfUniform = {
ExportManager.kVOLUME_SPHERE: isPointInUniformSphere,
ExportManager.kVOLUME_CUBE: isPointInCube
}
#grab any data we're interested in for the volume
volumePos = vectors.Vector(cmd.xform(volume, q=True, ws=True, rp=True))
volumeScale = map(abs, cmd.getAttr('%s.s' % volume)[0])
volumeBasis = [Vector((v.x, v.y, v.z)) for v in api.getObjectBases(volume)]
#make sure the basis is normalized
volumeBasis = [v.normalize() for v in volumeBasis]
#now lets determine the volume type
type = ExportManager.kVOLUME_SPHERE
try:
type = int(cmd.getAttr('%s.exportVolume' % volume))
except TypeError:
pass
isContainedMethod = insideDeterminationMethod[type]
print 'method for interior volume determination', isContainedMethod.__name__
sx = volumeScale[0]
if vectors.Vector(volumeScale).within((sx, sx, sx)):
try:
isContainedMethod = insideDeterminationIfUniform[type]
except KeyError:
pass
#now lets iterate over the geometry
meshVertsWithin = {}
for mesh in meshes:
#its possible to pass not a mesh but a component in - this is totally valid, as the polyListComponentConversion
#should make sure we're always dealing with verts no matter what, but we still need to make sure the dict key is
#the actual name of the mesh - hence this bit of jiggery pokery
dotIdx = mesh.rfind('.')
meshName = mesh if dotIdx == -1 else mesh[:dotIdx]
meshPositions = []
meshVertsWithin[meshName] = meshPositions
#this gives us a huge list of floats - each sequential triple is the position of a vert
try:
#if this complains its most likely coz the geo is bad - so skip it...
vertPosList = cmd.xform(cmd.ls(cmd.polyListComponentConversion(
mesh, toVertex=True),
fl=True),
q=True,
t=True,
ws=True)
except TypeError:
continue
count = len(vertPosList) / 3
for idx in xrange(count):
pos = VertPos(vertPosList.pop(0), vertPosList.pop(0),
vertPosList.pop(0), idx)
contained = isContainedMethod(pos, volumePos, volumeScale,
volumeBasis)
if contained:
pos.weight = contained[1]
meshPositions.append(pos)
return meshVertsWithin
