[vtkusers] Associate texture with polydata

[David Gobbi]

On Sun, Nov 15, 2009 at 3:52 PM, David Doria <daviddoria+vtk at gmail.com> wrote:
> If I save a plane source as a vtp file, I can open it in paraview and then
> set "apply texture" in the "display" tab of the object inspector to a bitmap
> image. Is there anyway to associate this image with the geometry in c++
> code, so that when I open the vtp file the texture will already be applied?
> Or even better, somehow save the texture data in the same vtp file?
>
> Thanks,
>
> David

The vtkActor has a SetTexture method that allows you to associate a vtkTexture
object with polydata.  The vtkTexture is essentially a mapper that takes a
vtkImageData and turns it into an OpenGL texture.

The vtkPlaneSource should produce a polydata that already has the proper
texture coordinates to map the points of the plane to the corners of the image.
There is also a vtkTextureMapToPlane filter that can be used to add texture
coordinates to a polydata.

AFAIK none of the VTK file formats allow textures to be stored with polydata,
but they will at least save the texture coordinates.

    David