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import unittest
from imath import *
from alembic.Abc import *
from alembic.AbcCoreAbstract import *
from alembic.AbcGeom import *
from meshData import *

testList = []

kFacevaryingScope = GeometryScope.kFacevaryingScope
kWrapExisting = WrapExistingFlag.kWrapExisting

class Wrapest(unittest.TestCase):
    def testExport(self):
        """write an oarchive with some data in it"""

        meshyObj = OPolyMesh( OArchive( 'wrapTest1.abc' ).getTop() , 'meshy' )
        mesh = meshyObj.getSchema()

        uvsamp = OV2fGeomParamSample( uvs, kFacevaryingScope )
        nsamp  = ON3fGeomParamSample( normals, kFacevaryingScope )
        mesh_samp = OPolyMeshSchemaSample( verts, indices, counts, uvsamp, nsamp )

        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.set( mesh_samp )
        mesh.set( mesh_samp )

    def testImport(self):
        """read in an archive and try wrapping it as various objects"""

        arch = IArchive('wrapTest1.abc')
        obj = IObject(arch.getTop(), "meshy")
        md = obj.getMetaData()

        self.assertTrue(IPolyMesh.matches(md))
        self.assertFalse(ISubD.matches(md))

        # wrap object as PolyMesh
        mesh = IPolyMesh(obj, kWrapExisting)
        self.assertTrue(mesh.valid())

        # wrap object as SubD
        subd = ISubD(obj, kWrapExisting)
        self.assertTrue(subd.valid())

        # this should throw an exception
        self.assertRaises(RuntimeError, ICamera, obj, kWrapExisting)
        self.assertRaises(RuntimeError, IPolyMesh, arch.getTop(), kWrapExisting)