Added Youngs material interface instance along with mapper/actor

Change-Id: I6105d75a8e5a45756e7bedcb602b4054d209896c

Examples/Graphics/Python/YoungsMaterialInterface.py

@@ -10,27 +10,48 @@ VTK_DATA_ROOT = vtkGetDataRoot()
 reader = vtkAVSucdReader()
 reader.SetFileName( VTK_DATA_ROOT + "/Data/UCD/UCD_00005.inp" )
 
-# Update reader and get cell data
+# Update reader and get mesh and cell data
 reader.Update()
-cellData = reader.GetOutput().GetCellData()
+mesh = reader.GetOutput()
+cellData = mesh.GetCellData()
 cellData.SetActiveScalars("frac_pres[1]")
 
-# Create mapper for wireframe rendering of volume fraction #1
-mapper = vtkDataSetMapper()
-mapper.SetInputConnection( reader.GetOutputPort() )
-mapper.SetScalarRange( cellData.GetScalars().GetRange() )
-mapper.SetScalarModeToUseCellData()
-mapper.SetColorModeToMapScalars()
-mapper.ScalarVisibilityOn()
+# Create mapper for wireframe rendering of material fraction #1
+fractionMapper = vtkDataSetMapper()
+fractionMapper.SetInputConnection( reader.GetOutputPort() )
+fractionMapper.SetScalarRange( cellData.GetScalars().GetRange() )
+fractionMapper.SetScalarModeToUseCellData()
+fractionMapper.SetColorModeToMapScalars()
+fractionMapper.ScalarVisibilityOn()
 
-# Create actor
-actor = vtkActor()
-actor.SetMapper( mapper )
-actor.GetProperty().SetRepresentationToWireframe()
+# Create wireframe actor
+wireActor = vtkActor()
+wireActor.SetMapper( fractionMapper )
+wireActor.GetProperty().SetRepresentationToWireframe()
 
-# Create renderer
+# Male multiblock from input mesh
+meshMB =  vtkMultiBlockDataSet()
+meshMB.SetNumberOfBlocks( 1 )
+meshMB.GetMetaData( 0 ).Set( vtkCompositeDataSet.NAME(), "Mesh" )
+meshMB.SetBlock( 0, mesh )
+
+# Reconstruct material interface
+interface = vtkYoungsMaterialInterface()
+interface.SetInput( meshMB )
+
+# Create mappeyr for surface rendering of reconstructed interface
+interfaceMapper = vtkDataSetMapper()
+interfaceMapper.SetInputConnection( interface.GetOutputPort() )
+
+# Create surface actor
+surfActor = vtkActor()
+surfActor.SetMapper( fractionMapper )
+surfActor.GetProperty().SetRepresentationToSurface()
+
+# Create renderer and add actors to it
 renderer = vtkRenderer()
-renderer.AddViewProp( actor )
+renderer.AddViewProp( wireActor )
+renderer.AddViewProp( surfActor )
 renderer.SetBackground( .3, .4 ,.5 )
 
 # Create render window