[vtkusers] ray tracing with vtk

[Nikita Kojekine AKA Kitya Karlson]

I have created a program which gives me a function f(x,y,z)
and f(x,y,z)=0 represents my surface (f(x,y,z)<=0 - solid).
Could I visualise it with vtk? I guess I need a ray tracing object.
Is there such in vtk and how to use it?
Thank you!

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