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UnrealEngine/Engine/Source/ThirdParty/Alembic/alembic-1.8.7/python/PyAlembic/Tests/testPolyMesh.py
2025-05-18 13:04:45 +08:00

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Python

#-******************************************************************************
#
# Copyright (c) 2012-2013,
# Sony Pictures Imageworks Inc. and
# Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Sony Pictures Imageworks, nor
# Industrial Light & Magic, nor the names of their contributors may be used
# to endorse or promote products derived from this software without specific
# prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#-******************************************************************************
import unittest
from imath import *
from alembic.Abc import *
from alembic.AbcCoreAbstract import *
from alembic.AbcGeom import *
from meshData import *
kFacevaryingScope = GeometryScope.kFacevaryingScope
class PolymeshTest(unittest.TestCase):
def testMeshExport(self):
"""write an oarchive with a mesh in it"""
meshyObj = OPolyMesh( OArchive( 'polyMesh1.abc' ).getTop() , 'meshy' )
mesh = meshyObj.getSchema()
uvsamp = OV2fGeomParamSample( uvs, kFacevaryingScope )
nsamp = ON3fGeomParamSample( normals, kFacevaryingScope )
mesh_samp = OPolyMeshSchemaSample( verts, indices, counts, uvsamp, nsamp )
mesh.setUVSourceName("NienNunb")
cbox = Box3d()
cbox.extendBy( V3d( 1.0, -1.0, 0.0 ) )
cbox.extendBy( V3d( -1.0, 1.0, 3.0 ) )
mesh.getChildBoundsProperty().setValue( cbox )
mesh.getChildBoundsProperty().setValue( cbox )
mesh.set( mesh_samp )
mesh.set( mesh_samp )
userProp = mesh.getUserProperties()
n2f = ON2fProperty(userProp, 'n2f')
n2f.setValue(V2f(1.0, 2.0))
def testMeshImport(self):
"""read an iarchive with a mesh in it"""
geomBase = IGeomBaseObject( IArchive( 'polyMesh1.abc' ).getTop(), 'meshy' )
self.assertTrue(geomBase.getSchema().getSelfBoundsProperty().valid())
meshyObj = IPolyMesh( IArchive( 'polyMesh1.abc' ).getTop(), 'meshy' )
mesh = meshyObj.getSchema()
N = mesh.getNormalsParam()
uv = mesh.getUVsParam()
self.assertEqual(uv.getMetaData().getSourceName(), "NienNunb")
self.assertFalse(N.isIndexed())
self.assertFalse(uv.isIndexed())
meshSamp = mesh.getValue()
baseSamp = geomBase.getSchema().getValue()
self.assertEqual(meshSamp.getSelfBounds().min(), V3d( -1.0, -1.0, -1.0 ))
self.assertEqual(meshSamp.getSelfBounds().max(), V3d( 1.0, 1.0, 1.0 ))
self.assertEqual(baseSamp.getSelfBounds().min(), V3d( -1.0, -1.0, -1.0 ))
self.assertEqual(baseSamp.getSelfBounds().max(), V3d( 1.0, 1.0, 1.0 ))
arbattrs = mesh.getArbGeomParams()
self.assertFalse(arbattrs)
nsp = N.getExpandedValue().getVals()
self.assertTrue(N.isConstant())
self.assertTrue(uv.isConstant())
for i in range( len( nsp ) ):
self.assertEqual(nsp[i], normals[i])
uvsamp = uv.getIndexedValue()
self.assertEqual(uvsamp.getIndices()[1], 1)
uv2 = uvsamp.getVals()[2]
self.assertEqual(uv2, V2f( 1.0, 1.0 ))
positions = meshSamp.getPositions()
for i in range( len( positions ) ):
self.assertEqual(positions[i], verts[i])
userProp = mesh.getUserProperties()
n2f = IN2fProperty(userProp, 'n2f')
self.assertEqual(n2f.getValue(0), V2f(1.0, 2.0))
def testMeshLayerExport(self):
"""write a boring oarchive with a mesh and an oarchive with just uvs"""
# the boring one
meshyObj = OPolyMesh( OArchive( 'polyMeshLayerA.abc' ).getTop() , 'meshy' )
mesh = meshyObj.getSchema()
mesh_samp = OPolyMeshSchemaSample( verts, indices, counts )
mesh.set( mesh_samp )
# now just the UVs
rootB = OArchive( 'polyMeshLayerB.abc' ).getTop()
meshyObjB = OPolyMesh( rootB, 'meshy', SparseFlag.kSparse )
mesh = meshyObjB.getSchema()
mesh_samp = OPolyMeshSchemaSample()
uvsamp = OV2fGeomParamSample( uvs, kFacevaryingScope )
mesh_samp.setUVs( uvsamp )
mesh.set( mesh_samp )
def testMeshLayerImport(self):
"""read the mesh layering the uvs on top"""
layers = ['polyMeshLayerA.abc', 'polyMeshLayerB.abc']
meshyObj = IPolyMesh( IArchive( layers ).getTop(), 'meshy' )
mesh = meshyObj.getSchema()
uv = mesh.getUVsParam()
self.assertTrue(uv.valid())
uvsamp = uv.getIndexedValue()
self.assertEqual(uvsamp.getIndices()[1], 1)
meshSamp = mesh.getValue()
positions = meshSamp.getPositions()
for i in range( len( positions ) ):
self.assertEqual(positions[i], verts[i])