Method testPlane

test/IECoreScene/MeshPrimitive.py:270–337

( self )

	@unittest.skipIf( IECore.TestUtil.inMacCI(), "Incorrect pointAtUV results on virtualized macOS used in CI" )
	def testPlane( self ) :

		m = IECoreScene.MeshPrimitive.createPlane( imath.Box2f( imath.V2f( 0 ), imath.V2f( 1 ) ) )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Constant ), 1 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Uniform ), 1 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Vertex ), 4 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Varying ), 4 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.FaceVarying ), 4 )
		self.assertEqual( m.numFaces(), 1 )
		self.assertEqual( m.verticesPerFace, IECore.IntVectorData( [ 4 ] ) )
		self.assertEqual( m.vertexIds, IECore.IntVectorData( [ 0, 1, 3, 2 ] ) )
		self.assertEqual( m.bound(), imath.Box3f( imath.V3f( 0 ), imath.V3f( 1, 1, 0 ) ) )
		self.assertTrue( m.arePrimitiveVariablesValid() )

		# verify uvs
		self.assertEqual( m["uv"].interpolation, IECoreScene.PrimitiveVariable.Interpolation.FaceVarying )
		self.assertEqual( len( m["uv"].data ), len( m["P"].data ) )
		self.assertEqual( m["uv"].indices, m.vertexIds )

		# verify uvs
		self.assertEqual( m["N"].interpolation, IECoreScene.PrimitiveVariable.Interpolation.Vertex )
		self.assertEqual( len( m["N"].data ), len( m["P"].data ) )
		self.assertEqual( m["N"].data, IECore.V3fVectorData( [ imath.V3f( 0, 0, 1 ) ] * len( m["P"].data ), IECore.GeometricData.Interpretation.Normal ) )

		e = IECoreScene.MeshPrimitiveEvaluator( IECoreScene.MeshAlgo.triangulate( m ) )

		r = e.createResult()
		self.assertTrue( e.pointAtUV( imath.V2f( 0, 0 ), r ) )
		self.assertEqual( r.point(), m["P"].data[0] )
		self.assertEqual( r.point(), imath.V3f( 0, 0, 0 ) )
		self.assertTrue( e.pointAtUV( imath.V2f( 1, 0 ), r ) )
		self.assertEqual( r.point(), m["P"].data[1] )
		self.assertEqual( r.point(), imath.V3f( 1, 0, 0 ) )
		self.assertTrue( e.pointAtUV( imath.V2f( 1, 1 ), r ) )
		self.assertEqual( r.point(), m["P"].data[3] )
		self.assertEqual( r.point(), imath.V3f( 1, 1, 0 ) )
		self.assertTrue( e.pointAtUV( imath.V2f( 0, 1 ), r ) )
		self.assertEqual( r.point(), m["P"].data[2] )
		self.assertEqual( r.point(), imath.V3f( 0, 1, 0 ) )

		# test divisions
		m = IECoreScene.MeshPrimitive.createPlane( imath.Box2f( imath.V2f( 0 ), imath.V2f( 1 ) ), divisions = imath.V2i( 2, 3 ) )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Constant ), 1 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Uniform ), 6 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Vertex ), 12 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.Varying ), 12 )
		self.assertEqual( m.variableSize( IECoreScene.PrimitiveVariable.Interpolation.FaceVarying ), 24 )
		self.assertEqual( m.numFaces(), 6 )
		self.assertEqual( m.verticesPerFace, IECore.IntVectorData( [ 4 ] * 6 ) )
		self.assertEqual( m.vertexIds, IECore.IntVectorData( [ 0, 1, 4, 3, 1, 2, 5, 4, 3, 4, 7, 6, 4, 5, 8, 7, 6, 7, 10, 9, 7, 8, 11, 10 ] ) )
		self.assertEqual( m.bound(), imath.Box3f( imath.V3f( 0 ), imath.V3f( 1, 1, 0 ) ) )
		self.assertTrue( m.arePrimitiveVariablesValid() )

		# corners still have correct uvs
		e = IECoreScene.MeshPrimitiveEvaluator( IECoreScene.MeshAlgo.triangulate( m ) )
		r = e.createResult()
		self.assertTrue( e.pointAtUV( imath.V2f( 0, 0 ), r ) )
		self.assertEqual( r.point(), m["P"].data[0] )