Contour of a 2d projection from 3d data
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Timur Navruzov
on 3 Dec 2015
Commented: Timur Navruzov
on 4 Dec 2015
Hi I am given many vertices and faces for a tree with 4 branches (2 on the side and 2 at the top). I need to look at X-Y and Y-Z projections with only the outlines displayed. If I simply plot (x,y) and (y,z) then all internal points fill the projection and I can't figure out how to get rid of them. I cannot simply use xmin and xmax, because that gets rid of parts of the branches Thanks for your help
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Mike Garrity
on 3 Dec 2015
Edited: Mike Garrity
on 3 Dec 2015
The basic idea is that you use surf or patch or whatever you're using to draw the 3D object, but replace either the X,Y, or Z data with a constant array of the same size (the zeros(size(xs))+1.5 parts of the first 3 calls to surface in that answer).
Does that make sense? If you need more details, I'd probably need more details of how your 3D object is represented.
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