[vtkusers] Change color space without vtkColorTransferFunction()

[Amy Squillacote]

SetLookupTable

It's defined in vtkMapper, the superclass of vtkPolyDataMapper.

- Amy

Hom Nath Gharti wrote:
> Many thanks for the help.
>
> Unfortunately I could not figure out the appropriate member of 
> vtkPolyDataMapper() to define the vtkColorTransferFunction(). Would 
> you point me further?
>
> Thanks
>
> On Mon, Feb 2, 2009 at 11:06 AM, Amy Squillacote <ahs at cfdrc.com 
> <mailto:ahs at cfdrc.com>> wrote:
>
>     You don't set the vtkColorTransferFunction on a vtkProperty; you
>     set it on a vtkMapper (or vtkPolyDataMapper, in your case).
>     vtkActor's SetProperty method takes a vtkProperty, so that isn't
>     the problem.
>
>
>     - Amy
>
>     Hom Nath Gharti wrote:
>
>         Thanks for the suggestion. I have the python code like this:
>
>         import vtk
>
>         # Create rendering window and renderer
>         ren = vtk.vtkRenderer()
>         renWin = vtk.vtkRenderWindow()
>         renWin.AddRenderer(ren)
>         renWin.SetSize(600, 600)
>
>         # Interacting window
>         iren = vtk.vtkRenderWindowInteractor()
>         iren.SetRenderWindow(renWin)
>
>         # Read VTK image data
>         reader = vtk.vtkXMLImageDataReader()
>         reader.SetFileName("py_3d_strike0_stack_XY.vti")
>
>         plane=vtk.vtkImageDataGeometryFilter()
>         plane.SetInputConnection(reader.GetOutputPort())
>         plane.SetExtent(0, 60, 0, 60, 0, 0)
>         #srange = plane.GetOutput().GetPointData().GetScalars().GetRange()
>
>         warp = vtk.vtkWarpScalar()
>         warp.SetInputConnection(plane.GetOutputPort())
>         warp.UseNormalOn
>         warp.SetNormal(0.0,0.0,1.0)
>         warp.SetScaleFactor(2.0)
>
>         # Color map
>         color=vtk.vtkColorTransferFunction()
>         color.SetColorSpaceToDiverging()
>
>         vprop=vtk.vtkProperty()
>         vprop.SetColor(color)
>
>         mapper = vtk.vtkPolyDataMapper()
>         mapper.SetInputConnection(warp.GetOutputPort())
>
>         actor = vtk.vtkActor()
>         actor.SetMapper(mapper)
>         actor.SetProperty(vprop)
>         actor.GetProperty().SetRepresentationToWireframe()
>         actor.SetPosition(0.0,0.0,200.0) #Translate
>
>         # Add the actors to the renderer, set the background
>         ren.AddActor(actor)
>
>         ren.ResetCamera()
>         ren.GetActiveCamera().Azimuth(0)
>         ren.GetActiveCamera().Elevation(-70)
>         ren.SetBackground(1.0, 1.0, 1.0)
>         ren.ResetCameraClippingRange()
>
>         #iren.Initialize()
>         renWin.Render()
>         iren.Start()
>
>
>         Obviously I get the error in in ' actor.SetProperty(vprop) '
>         and I cannot implement vtkVolumeProperty() here. Am I missing
>         something?
>
>         Any help/suggestions will greatly be appreciated.
>
>         Thanks,
>         Hom Nath
>
>
>     -- 
>     Amy Squillacote                    Phone: (256) 726-4839
>     Sr. Computer Scientist             Fax: (256) 726-4806
>     CFD Research Corporation           Web: http://www.cfdrc.com
>     215 Wynn Drive, Suite 501
>     Huntsville, AL  35805
>
>
>

-- 
Amy Squillacote                    Phone: (256) 726-4839
Sr. Computer Scientist             Fax: (256) 726-4806
CFD Research Corporation           Web: http://www.cfdrc.com
215 Wynn Drive, Suite 501
Huntsville, AL  35805