[vtkusers] How to convert 3D coordinates into 2D image coordinates

[Wenlong Wang]

Dear all,

I've got a problem in converting coordinates.

I have get a screenshot of my 3D surface model (polydata) and saved it as a
2D image. Now I'd like to find the corresponding 2D image coordinates of
certain point of my 3D model. Is there anyone can provide suggestions?

Thank you so much for your kind help!

Long
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