Method GetCompositeProjectionTransformMatrix

Rendering/Core/vtkCamera.cxx:1204–1223

------------------------------------------------------------------------------ Return the projection transform matrix. See ComputeProjectionTransform.

//------------------------------------------------------------------------------
// Return the projection transform matrix. See ComputeProjectionTransform.
vtkMatrix4x4* vtkCamera::GetCompositeProjectionTransformMatrix(
  double aspect, double nearz, double farz)
{
  // turn off stereo, the CompositeProjectionTransformMatrix is used for
  // picking, not for rendering.
  int stereo = this->Stereo;
  this->Stereo = 0;

  vtkMatrix4x4* projectionMatrix = this->GetProjectionTransformMatrix(aspect, nearz, farz);
  vtkMatrix4x4* viewMatrix = this->GetViewTransformMatrix();

  this->Transform->Identity();
  this->Transform->Concatenate(projectionMatrix);
  this->Transform->Concatenate(viewMatrix);

  this->Stereo = stereo;

  // return the transform
  return this->Transform->GetMatrix();
}

//------------------------------------------------------------------------------
// Return the attached light transform matrix.