[vtkusers] Question about texture coordinate?

[shrinivas kulkarni]

Hi Hui,

Apart from the classes you provided here, we can specify texture coordinates for each vertex independetly as follows:

pTCoords = vtkFloatArray::New();
pTCoords->SetNumberOfComponents( 2 );
pTCoords->SetNumberOfTuples( nNoOfPoints );

// (..for each point in polydata do this )
pTCoords->SetTuple2( nIndex, fX, fY );
// At the end assign this as TCoords to polydata.
pMeshPolyData->GetPointData()->SetTCoords( pTCoords );

Note that, assumption here is you use vtkPolydata.( I have played with only vtkPolydata for texture mapping).
Hope this helps you.

Thanks and regards,
Shrinivas

----- Original Message -----
From: "Hui Zhang (James)" <zhang at isis.imac.georgetown.edu>
Date: Thu, 10 Jun 2004 11:10:44 -0400
To: <vtkusers at vtk.org>
Subject: [vtkusers] Question about texture coordinate?

> Hi, 
> 
> I am trying to use the texture mapping in VTK. For example, I have some geometry shapes like triangle cells, for each vertex, we have different texture coordinate. So I want to set each point's coordinate like common OpenGL routine. But I find VTK only have vtkTextureMapToPlane vtkTextureMapToSphere vtkTextureMapToBox vtkTransformTexture vtkThresholdTextureCoords. So which one should be used for assign each point's coordinates? Anyone can provide a simple example for two triangles with user-specified texture coordinate?
> 
> Thanks
> 
Hui Zhang
>
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