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How can I create 2D projections from a 3D object?

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Eric on 10 May 2016
Commented: Thomas Cornew on 10 May 2018
I know I can use "radon" for creating 1D projections from 2D, but how can I get 2D projections from 3D objects (such as from a 3D file like an STL file).

Answers (1)

Mike Garrity
Mike Garrity on 10 May 2016
One approach is the technique I showed in answers to this question, and this question.
The basic idea is that you take keep the faces of your geometry, but project the vertices onto the plane. That does mean that you've got multiple conincident polys, so it's not good for things like area computation. But if you just want the visual result, it works well and it's simple.
  1 Comment
Thomas Cornew
Thomas Cornew on 10 May 2018
Hello Mike,
How would I approach this problem if I was trying to solve for the area of the 2d projection?

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