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import unittest
import imath
import IECore
import IECoreScene

class TestTransformOp( unittest.TestCase ) :

	def METHOD_NAME( self ) :

		o = IECoreScene.TransformOp()

		self.assertEqual( o["primVarsToModify"].getValue(), IECore.StringVectorData( [ "P", "N" ] ) )

	def testTranformation( self ) :

		m = IECoreScene.MeshPrimitive.createBox( imath.Box3f( imath.V3f( -1 ), imath.V3f( 1 ) ) )
		IECoreScene.MeshNormalsOp()( input = m, copyInput = False )
		m["vel"] = IECoreScene.PrimitiveVariable( IECoreScene.PrimitiveVariable.Interpolation.Vertex, IECore.V3fVectorData( [ imath.V3f( 0.5 ) ] * 8, IECore.GeometricData.Interpretation.Vector ) )
		m["notVel"] = IECoreScene.PrimitiveVariable( IECoreScene.PrimitiveVariable.Interpolation.Vertex, IECore.V3fVectorData( [ imath.V3f( 0.5 ) ] * 8 ) )

		mt = IECoreScene.TransformOp()( input=m, primVarsToModify = IECore.StringVectorData( ["N", "P", "vel", "notVel"] ), matrix = IECore.M44fData( imath.M44f().translate( imath.V3f( 1 ) ) ) )

		self.assertEqual( mt.bound(), imath.Box3f( imath.V3f( 0 ), imath.V3f( 2 ) ) )
		self.assertEqual( mt["P"].data, IECore.V3fVectorData( [ x + imath.V3f( 1 ) for x in m["P"].data ], IECore.GeometricData.Interpretation.Point ) )
		self.assertEqual( mt["N"].data, m["N"].data )
		self.assertEqual( mt["vel"].data, m["vel"].data )
		self.assertEqual( mt["notVel"].data, m["notVel"].data )

		ms = IECoreScene.TransformOp()( input=m, primVarsToModify = IECore.StringVectorData( ["N", "P", "vel", "notVel"] ), matrix = IECore.M44fData( imath.M44f().scale( imath.V3f( 1, 2, 3 ) ) ) )

		self.assertEqual( ms.bound(), imath.Box3f( imath.V3f( -1, -2, -3 ), imath.V3f( 1, 2, 3 ) ) )
		self.assertEqual( ms["P"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["P"].data ], IECore.GeometricData.Interpretation.Point ) )
		self.assertNotEqual( ms["N"].data, m["N"].data )
		self.assertNotEqual( ms["N"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["N"].data ], IECore.GeometricData.Interpretation.Normal ) )
		self.assertEqual( ms["vel"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["vel"].data ], IECore.GeometricData.Interpretation.Vector ) )
		self.assertEqual( ms["notVel"].data, m["notVel"].data )

		self.assertEqual( ms["P"].data.getInterpretation(), IECore.GeometricData.Interpretation.Point )
		self.assertEqual( ms["N"].data.getInterpretation(), IECore.GeometricData.Interpretation.Normal )
		self.assertEqual( ms["vel"].data.getInterpretation(), IECore.GeometricData.Interpretation.Vector )
		self.assertEqual( ms["notVel"].data.getInterpretation(), IECore.GeometricData.Interpretation.None_ )

	def testPrimVarParameter( self ) :

		m = IECoreScene.MeshPrimitive.createBox( imath.Box3f( imath.V3f( -1 ), imath.V3f( 1 ) ) )
		IECoreScene.MeshNormalsOp()( input = m, copyInput = False )
		m["vel"] = IECoreScene.PrimitiveVariable( IECoreScene.PrimitiveVariable.Interpolation.Vertex, IECore.V3fVectorData( [ imath.V3f( 0.5 ) ] * 8, IECore.GeometricData.Interpretation.Vector ) )
		m["notVel"] = IECoreScene.PrimitiveVariable( IECoreScene.PrimitiveVariable.Interpolation.Vertex, IECore.V3fVectorData( [ imath.V3f( 0.5 ) ] * 8 ) )

		ms = IECoreScene.TransformOp()( input=m, primVarsToModify = IECore.StringVectorData( [ "P", "vel" ] ), matrix = IECore.M44fData( imath.M44f().scale( imath.V3f( 1, 2, 3 ) ) ) )

		self.assertEqual( ms.bound(), imath.Box3f( imath.V3f( -1, -2, -3 ), imath.V3f( 1, 2, 3 ) ) )
		self.assertEqual( ms["P"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["P"].data ], IECore.GeometricData.Interpretation.Point ) )
		self.assertEqual( ms["N"].data, m["N"].data )
		self.assertEqual( ms["vel"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["vel"].data ], IECore.GeometricData.Interpretation.Vector ) )
		self.assertEqual( ms["notVel"].data, m["notVel"].data )

		ms = IECoreScene.TransformOp()( input=m, primVarsToModify = IECore.StringVectorData( [ "P" ] ), matrix = IECore.M44fData( imath.M44f().scale( imath.V3f( 1, 2, 3 ) ) ) )

		self.assertEqual( ms.bound(), imath.Box3f( imath.V3f( -1, -2, -3 ), imath.V3f( 1, 2, 3 ) ) )
		self.assertEqual( ms["P"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["P"].data ], IECore.GeometricData.Interpretation.Point ) )
		self.assertEqual( ms["N"].data, m["N"].data )
		self.assertEqual( ms["N"].data, m["N"].data )
		self.assertEqual( ms["notVel"].data, m["notVel"].data )

	def testSamePrimVars( self ) :

		m = IECoreScene.MeshPrimitive.createBox( imath.Box3f( imath.V3f( -1 ), imath.V3f( 1 ) ) )
		IECoreScene.MeshNormalsOp()( input = m, copyInput = False )
		m["vel"] = IECoreScene.PrimitiveVariable( IECoreScene.PrimitiveVariable.Interpolation.Vertex, IECore.V3fVectorData( [ imath.V3f( 0.5 ) ] * 8, IECore.GeometricData.Interpretation.Vector ) )
		m["sameVel"] = m["vel"]

		ms = IECoreScene.TransformOp()( input=m, primVarsToModify = IECore.StringVectorData( [ "vel", "sameVel" ] ), matrix = IECore.M44fData( imath.M44f().scale( imath.V3f( 1, 2, 3 ) ) ) )

		self.assertEqual( ms["vel"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["vel"].data ], IECore.GeometricData.Interpretation.Vector ) )
		self.assertEqual( ms["vel"].data, ms["sameVel"].data )

	def testIdenticalPrimVarsCanBeExcluded( self ) :

		m = IECoreScene.MeshPrimitive.createBox( imath.Box3f( imath.V3f( -1 ), imath.V3f( 1 ) ) )
		IECoreScene.MeshNormalsOp()( input = m, copyInput = False )
		m["vel"] = IECoreScene.PrimitiveVariable( IECoreScene.PrimitiveVariable.Interpolation.Vertex, IECore.V3fVectorData( [ imath.V3f( 0.5 ) ] * 8, IECore.GeometricData.Interpretation.Vector ) )
		m["otherVel"] = m["vel"]

		ms = IECoreScene.TransformOp()( input=m, primVarsToModify = IECore.StringVectorData( [ "vel" ] ), matrix = IECore.M44fData( imath.M44f().scale( imath.V3f( 1, 2, 3 ) ) ) )

		self.assertEqual( ms["vel"].data, IECore.V3fVectorData( [ x * imath.V3f( 1, 2, 3 ) for x in m["vel"].data ], IECore.GeometricData.Interpretation.Vector ) )
		self.assertNotEqual( ms["vel"].data, ms["otherVel"].data )
		self.assertEqual( ms["otherVel"].data, m["otherVel"].data )

if __name__ == "__main__":
	unittest.main()
