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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])