def test( self ) : v = GafferArnold.ArnoldVDB() # Just an empty procedural at this point. self.assertEqual( v["out"].childNames( "/" ), IECore.InternedStringVectorData( [ "volume" ] ) ) self.assertSceneValid( v["out"] ) self.assertEqual( v["out"].bound( "/volume" ), imath.Box3f( imath.V3f( -0.5 ), imath.V3f( 0.5 ) ) ) self.assertTrue( isinstance( v["out"].object( "/volume" ), IECoreScene.ExternalProcedural ) ) # If we enter a valid vdb filename, then we should get something # with the right bounds, and the right parameters in the procedural. v["fileName"].setValue( os.path.join( os.path.dirname( __file__ ), "volumes", "sphere.vdb" ) ) self.assertEqual( v["out"].bound( "/volume" ), imath.Box3f( imath.V3f( -1.1, 1.1, -1.1 ), imath.V3f( 1.1, 2.9, 1.1 ) ) ) procedural = v["out"].object( "/volume" ) self.assertTrue( isinstance( procedural, IECoreScene.ExternalProcedural ) ) self.assertEqual( procedural.getBound(), v["out"].bound( "/volume" ) ) self.assertEqual( procedural.getFileName(), "volume" ) self.assertEqual( procedural.parameters()["filename" ].value, v["fileName"].getValue() ) self.assertEqual( procedural.parameters()["grids" ], IECore.StringVectorData( [ v["grids"].getValue() ] ) ) # Invalid grid names should create errors. v["grids"].setValue( "notAGrid" ) with six.assertRaisesRegex( self, Gaffer.ProcessException, "has no grid named \"notAGrid\"" ) as caught : v["out"].bound( "/volume" ) # As should invalid file names. v["grids"].setValue( "density" ) v["fileName"].setValue( "notAFile.vdb" ) with six.assertRaisesRegex( self, Gaffer.ProcessException, "No such file or directory" ) : v["out"].bound( "/volume" )
def testStepSize( self ) : v = GafferArnold.ArnoldVDB() v["fileName"].setValue( os.path.join( os.path.dirname( __file__ ), "volumes", "sphere.vdb" ) ) self.assertEqual( v["stepSize"].getValue(), 0 ) self.assertEqual( v["stepScale"].getValue(), 1 ) # Step size should be calculated for us. self.assertAlmostEqual( v["out"].object( "/volume" ).parameters()["step_size"].value, 0.2 ) # But we can scale it if we want. v["stepScale"].setValue( 4 ) self.assertAlmostEqual( v["out"].object( "/volume" ).parameters()["step_size"].value, 0.8 ) # Or override it entirely. v["stepSize"].setValue( 0.01 ) self.assertAlmostEqual( v["out"].object( "/volume" ).parameters()["step_size"].value, 0.04 )
