[vtkusers] vtkSelectVisiblePoints & what's in the Z-buffer

[John Platt]

Hi All,

 

If a point IS visible, does anyone know what vtkRenderer::GetZ() should
return? I get a lot of 1.0's which then fail the visibility test in
vtkSelectVisiblePoints 

 

      if ( fabs(z-dx[2]) <= this->Tolerance )  visible = 1;

 

Any help would be much appreciated.

 

John.

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