[vtkusers] Registrate 3D point and 2D point

[Wenlong Wang]

Dear all,

I'm stuck by a problem.

I've got a 3D surface (polydata, mesh). I want to project it to 2D plane and
save it as a .jpg image, which have already done. But when I start to find
the corresponding pixel coordinates of certain 3D point, I found no
available function can do that.

Would you help me with this please?

Many thanks in advance!

Long
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