[vtkusers] performance issue

[vlibertiaux]

Hi David,

thank you for your answer.  I implemented the code using
PolyDataToImageStencil and DataSetSurfaceFilter and it dramatically
decreased the computational time !!!

May I ask you a last question regarding the computational time ?  This piece
of code (http://codepad.org/hWUHd0Ac) was part of the previous code and I
didn't modify it.  However, it is also longer to execute compiled against
vtk5.6 than 4.4.

It basically looks how many times a ray crosses fibers (i.e. scalar = 128 or
255).

Could you please tell me what is time consuming in this code according to
you ? The rest of the code is OK as far as the comput. time is concerned.

Once again, thank you very much for your kind help.

Best regards,

Vincent 

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