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

kVertexScope = GeometryScope.kVertexScope
kCubic = CurveType.kCubic
kNonPeriodic = CurvePeriodicity.kNonPeriodic


class CurvesTest(unittest.TestCase):

    def doSample( self, iCurves ):

        curves = iCurves.getSchema()

        widthSamp = OFloatGeomParamSample( widths, kVertexScope )
        uvSamp = OV2fGeomParamSample( uvs, kVertexScope )

        curvesSamp = OCurvesSchemaSample( verts, numVerts, kCubic, kNonPeriodic,
                                           widthSamp, uvSamp )

        knots = curvesSamp.getKnots()
        self.assertEquals(len(knots), 0)

        newKnots = FloatArray(4)
        for ii in range(4):
            newKnots[ii] = ii
        curvesSamp.setKnots(newKnots)

        knots = curvesSamp.getKnots()
        for ii in range(4):
            self.assertEqual(knots[ii], ii)

        orders = curvesSamp.getOrders()
        self.assertEqual(len(orders), 0)

        newOrder = UnsignedCharArray(3)
        for ii in range(3):
            newOrder[ii] = ii
        curvesSamp.setOrders(newOrder)

        orders = curvesSamp.getOrders()
        for ii in range(3):
            self.assertEqual(newOrder[ii], ii)

        curves.set( curvesSamp )

    def testCurvesExport(self):
        """write an oarchive with a curve in it"""

        myCurves = OCurves( OArchive( 'curves1.abc' ).getTop(),
                            'really_long_curves_name' )

        for i in range(0,5):
            self.doSample( myCurves )

    def testCurvesImport(self):
        """read an iarchive with a curve in it"""

        myCurves = ICurves( IArchive( 'curves1.abc' ).getTop(),
                            'really_long_curves_name' )
        curves = myCurves.getSchema()

        curvesSamp = curves.getValue()

        self.assertEqual(curvesSamp.getSelfBounds().min(), V3d( -1.0, -1.0, -1.0 ))
        self.assertEqual(curvesSamp.getSelfBounds().max(), V3d(  1.0,  1.0,  1.0 ))

        knots = curvesSamp.getKnots()
        for ii in range(4):
            self.assertEqual(knots[ii], ii)

        orders = curvesSamp.getOrders()
        for ii in range(3):
            self.assertEqual(orders[ii], ii)

        positions = curvesSamp.getPositions()

        self.assertEqual(len( positions ), 12)

        for i in range( len( positions ) ):
            self.assertEqual(positions[i], verts[i])

        widthSamp = curves.getWidthsParam().getExpandedValue()

        self.assertEqual(len( widthSamp.getVals() ), 12)
        self.assertTrue(IFloatGeomParam.matches( curves.getWidthsParam().getHeader()))
        self.assertEqual(widthSamp.getScope(), kVertexScope)