[vtkusers] vtkCamera - non-virtual getter methods (GetPerspectiveTransformMatrix etc.)

[Stefan Bruckner]

Hi!
 
I am working on an integration of VTK into Studierstube
(www.studierstube.org), a collaborative augmented-reality environment
based on Open Inventor developed at the Vienna University of Technology.
 
I have to subclass vtkCamera in order to align the two camera models.
Now here's the problem: Some methods I have to overload are not defined
virtual.
 
The methods are:
 
GetPerspectiveTransformMatrix
<http://www.vtk.org/doc/nightly/html/classvtkCamera.html#z2854_0>  
GetCompositePerspectiveTransformMatrix
<http://www.vtk.org/doc/nightly/html/classvtkCamera.html#z2855_0>  
GetViewTransformMatrix
<http://www.vtk.org/doc/nightly/html/classvtkCamera.html#a13>  
GetViewTransformObject
<http://www.vtk.org/doc/nightly/html/classvtkCamera.html#a21>  
GetFrustumPlanes
<http://www.vtk.org/doc/nightly/html/classvtkCamera.html#a17> 
 
Maybe some developer can change that in the current CVS version
(changing the base class myself is only a temporary solution, I want to
stay up-to-date with CVS). Just making these methods virtual would help
me a lot, would not cause any harm, and only take 2mins of work.
 
In general, it would be good to make all getters "virtual" (as
vtkGetMacro does).
 
This would be a great help, my current workaround will not work for
general cases.
 
--
Thanks,
Stefan Bruckner
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