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

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).

Answer 1

[Mike Garrity]

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.

[Thomas Cornew]

Hello Mike,

How would I approach this problem if I was trying to solve for the area of the 2d projection?

[Naveen Pathak]

Hi Mike,

I have a simliar problem. Please, could you help me to plot the following:

https://www.mathworks.com/matlabcentral/answers/815765-2d-projection-of-a-3d-f-x-y-z-plot?s_tid=srchtitle

Thank you.