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

kFaceSetExclusive = FaceSetExclusivity.kFaceSetExclusive

class SubDTest(unittest.TestCase):
    def testSubDFaceSetExport(self):
        """Tests OSubD and OFaceSet"""

        archive = OArchive("facesetSubD1.abc")

        meshyObj = OSubD(archive.getTop(), "subd")
        mesh = meshyObj.getSchema()

        mesh.setUVSourceName("Chewbacca")

        mesh_samp = OSubDSchemaSample( verts, indices, counts )

        creases = IntArray(24)
        corners = IntArray(24)
        creaseLengths = IntArray(24)
        creaseSharpnesses = FloatArray(24)
        cornerSharpnesses = FloatArray(24)

        for i in range(24):
            creases[i] = indices[i]
            corners[i] = indices[i]
            cornerSharpnesses[i] = 1.0e38

        for i in range(6):
            creaseLengths[i] = 4
            creaseSharpnesses[i] = 1.0e38

        mesh_samp.setCreases(creases, creaseLengths, creaseSharpnesses)
        mesh_samp.setCorners(corners, cornerSharpnesses)

        # UVs
        uvsamp = OV2fGeomParamSample(uvs,
            GeometryScope.kFacevaryingScope)
        mesh_samp.setUVs(uvsamp)

        # setIsUV / isUV / getSourceName / setSourceName metadata test.
        meta = MetaData()
        meta.setIsUV(True)

        meta.setSourceName("Illum")
        self.assertEqual(meta.getSourceName(), "Illum")

        arb = mesh.getArbGeomParams()

        uv2 = None

        # scoped so it gets added before we check it
        if True:
            uv2 = OV2fGeomParam( arb, "uv2", True, GeometryScope.kFacevaryingScope, 1, meta )

        self.assertTrue(uv2)
        header = arb.getPropertyHeader("uv2")
        self.assertTrue(header.isUV())

        # set the sample
        mesh.set(mesh_samp)

        # change one of the schema's parameters
        mesh_samp.setInterpolateBoundary(1)
        mesh.set(mesh_samp)

        # test that the integer property doesn't latch to non-zero
        mesh_samp.setInterpolateBoundary(0)
        mesh.set(mesh_samp)

        # faceset testing
        faceSetNames = []
        my_face_set_obj = mesh.createFaceSet("testing_faceset")
        faceSetNames = mesh.getFaceSetNames()
        self.assertEqual(len(faceSetNames), 1)
        my_face_set = my_face_set_obj.getSchema()
        #print "created faceset called", my_face_set_obj.getName()

        # our FaceSet is composed of faces 1-3
        face_nums = IntArray(3)
        face_nums[0] = 1
        face_nums[1] = 2
        face_nums[2] = 3
        my_face_set_samp = OFaceSetSchemaSample(face_nums)

        # faceset is visible, doesn't change
        my_face_set.set(my_face_set_samp)
        my_face_set.setFaceExclusivity(kFaceSetExclusive)

        # Test that we've computed selfBounds correctly
        face_set_bounds = my_face_set_samp.getSelfBounds()

        parentOfFaceSet = my_face_set_obj.getParent()
        grandParent = parentOfFaceSet.getParent()

    def testSubDFaceSetImport(self):
        """tests ISubD and IFaceSet"""

        archive = IArchive("facesetSubD1.abc")
        meshyObj = ISubD(archive.getTop(), "subd")
        mesh = meshyObj.getSchema()

        self.assertEqual(mesh.getNumSamples(), 3)

        # faceset testing
        self.assertTrue(mesh.hasFaceSet("testing_faceset"))

        faceSetNames = mesh.getFaceSetNames()
        self.assertEqual(len(faceSetNames), 1)

        #for name in faceSetNames:
        #    print "meshyObj has faceSet", name
        self.assertEqual(faceSetNames[0], "testing_faceset")
        faceSetObj = mesh.getFaceSet("testing_faceset")

        faceSet = faceSetObj.getSchema()
        self.assertEqual(faceSet.getFaceExclusivity(), kFaceSetExclusive)

        faceSetSamp0 = faceSet.getValue(ISampleSelector(0))
        faces = faceSetSamp0.getFaces()
        self.assertEqual(faces[0], 1)
        self.assertEqual(faces[1], 2)
        self.assertEqual(faces[2], 3)

        # UVs
        uv = mesh.getUVsParam()
        self.assertEqual(uv.getMetaData().getSourceName(), "Chewbacca")
        self.assertFalse(uv.isIndexed())

        arb = mesh.getArbGeomParams()
        header = arb.getPropertyHeader("uv2")
        self.assertTrue(header.isUV())

        meta = header.getMetaData()
        self.assertEqual(meta.getSourceName(), "Illum")

        # we can fake like the UVs are indexed
        uvsamp = uv.getIndexedValue()
        self.assertEqual(uvsamp.getIndices()[1], 1)
        uv2 = uvsamp.getVals()[2]
        self.assertEqual(uv2, V2f(1.0, 1.0))

        samp1 = mesh.getValue(ISampleSelector(1))
        self.assertEqual(samp1.getSelfBounds().min(), V3d(-1.0, -1.0, -1.0))
        self.assertEqual(samp1.getSelfBounds().max(), V3d(1.0, 1.0, 1.0 ))
        self.assertEqual(samp1.getInterpolateBoundary(), 1)

        samp2 = mesh.getValue(ISampleSelector(2))
        self.assertEqual(samp2.getSelfBounds().min(), V3d(-1.0, -1.0, -1.0))
        self.assertEqual(samp2.getSelfBounds().max(), V3d(1.0, 1.0, 1.0))
        self.assertEqual(samp2.getInterpolateBoundary(), 0)