def testExportSkin_Posed(self):
"""
Checks that the skeletal skinning works when the skeleton is
exported in a non-rest pose.
"""
cmds.currentTime(1, edit=True)
usdFile = os.path.abspath('UsdExportMesh_skelPosed.usda')
cmds.usdExport(mergeTransformAndShape=True,
file=usdFile,
shadingMode='none',
exportSkin='explicit')
usdFileNoSkin = os.path.abspath('UsdExportMesh_skelPosed_noskin.usda')
cmds.usdExport(mergeTransformAndShape=True,
file=usdFileNoSkin,
shadingMode='none',
exportSkin='none')
stage = Usd.Stage.Open(usdFile)
stageNS = Usd.Stage.Open(usdFileNoSkin)
m = UsdGeom.Mesh.Get(stage, '/ExplicitSkelRoot/mesh')
mNS = UsdGeom.Mesh.Get(stageNS, '/ExplicitSkelRoot/mesh')
# Check Maya's output mesh versus the UsdSkel-computed result.
skelRoot = UsdSkel.Root.Get(stage, '/ExplicitSkelRoot')
UsdSkel.BakeSkinningLBS(skelRoot)
points = m.GetPointsAttr().Get()
refSkinnedPoints = mNS.GetPointsAttr().Get()
self._AssertVec3fArrayAlmostEqual(points, refSkinnedPoints)
def testExportSkin_AnimatedSkeleton(self):
"""
Checks that the skeletal skinning works when the skeleton is
animated.
"""
cmds.currentTime(1, edit=True)
usdFile = os.path.abspath('UsdExportMesh_skelAnim.usda')
cmds.usdExport(mergeTransformAndShape=True,
file=usdFile,
shadingMode='none',
exportSkin='auto',
frameRange=[1, 30])
usdFileNoSkin = os.path.abspath('UsdExportMesh_skelAnim_noskin.usda')
cmds.usdExport(mergeTransformAndShape=True,
file=usdFileNoSkin,
shadingMode='none',
exportSkin='none',
frameRange=[1, 30])
stage = Usd.Stage.Open(usdFile)
stageNS = Usd.Stage.Open(usdFileNoSkin)
restPoints = Vt.Vec3fArray([(-0.5, -1, 0.5), (0.5, -1, 0.5),
(-0.5, 0, 0.5), (0.5, 0, 0.5),
(-0.5, 1, 0.5), (0.5, 1, 0.5),
(-0.5, 1, -0.5), (0.5, 1, -0.5),
(-0.5, 0, -0.5), (0.5, 0, -0.5),
(-0.5, -1, -0.5), (0.5, -1, -0.5)])
m = UsdGeom.Mesh.Get(stage, '/ImplicitSkelRoot/animatedCube')
self.assertEqual(m.GetPointsAttr().Get(1.0), restPoints)
mNS = UsdGeom.Mesh.Get(stageNS, '/ImplicitSkelRoot/animatedCube')
self._AssertVec3fArrayAlmostEqual(mNS.GetPointsAttr().Get(1.0),
restPoints)
# Check Maya's output mesh versus the UsdSkel-computed result.
skelRoot = UsdSkel.Root.Get(stage, '/ImplicitSkelRoot')
UsdSkel.BakeSkinningLBS(skelRoot)
for i in xrange(1, 31):
points = m.GetPointsAttr().Get(i)
refSkinnedPoints = mNS.GetPointsAttr().Get(i)
self._AssertVec3fArrayAlmostEqual(points, refSkinnedPoints)
def testExportSkin(self):
"""
Sanity check -- no animation, posed in rest pose.
The skinning result should match the original mesh.
"""
cmds.currentTime(1, edit=True)
usdFile = os.path.abspath('UsdExportMesh_skel.usda')
cmds.usdExport(mergeTransformAndShape=True,
file=usdFile,
shadingMode='none',
exportSkin='auto')
usdFileNoSkin = os.path.abspath('UsdExportMesh_skel_noskin.usda')
cmds.usdExport(mergeTransformAndShape=True,
file=usdFileNoSkin,
shadingMode='none',
exportSkin='none')
stage = Usd.Stage.Open(usdFile)
stageNS = Usd.Stage.Open(usdFileNoSkin)
restPoints = Vt.Vec3fArray([(-0.5, -1, 0.5), (0.5, -1, 0.5),
(-0.5, 0, 0.5), (0.5, 0, 0.5),
(-0.5, 1, 0.5), (0.5, 1, 0.5),
(-0.5, 1, -0.5), (0.5, 1, -0.5),
(-0.5, 0, -0.5), (0.5, 0, -0.5),
(-0.5, -1, -0.5), (0.5, -1, -0.5)])
m = UsdGeom.Mesh.Get(stage, '/ImplicitSkelRoot/animatedCube')
self.assertEqual(m.GetPointsAttr().Get(), restPoints)
mNS = UsdGeom.Mesh.Get(stageNS, '/ImplicitSkelRoot/animatedCube')
self._AssertVec3fArrayAlmostEqual(mNS.GetPointsAttr().Get(),
restPoints)
# Check Maya's output mesh versus the UsdSkel-computed result.
skelRoot = UsdSkel.Root.Get(stage, '/ImplicitSkelRoot')
UsdSkel.BakeSkinningLBS(skelRoot)
points = m.GetPointsAttr().Get()
refSkinnedPoints = mNS.GetPointsAttr().Get()
self._AssertVec3fArrayAlmostEqual(points, refSkinnedPoints)
