How can I get a point cloud from a patch object?
6 views (last 30 days)
Show older comments
Chris Virgin
on 18 Jul 2014
Answered: Chris Virgin
on 23 Jul 2014
I've downloaded the IGESToolBox from here and brought in a flowpath from CAD. The IGESToolbox plots the supplied file as a patch;
patch('faces',TRI,'vertices',P','FaceColor',clr,'EdgeColor','none');
I would like to extract the point cloud from the patch so I can make a ndgrid or trimesh. However, I can't figure out how to get the data out of TRI and P. I've tried 3 different ways and I just end up with a funky wedge shape instead of the flowpath.
Thanks for looking
0 Comments
Accepted Answer
Kelly Kearney
on 18 Jul 2014
I'm assuming from this example that TRI is nx3 and P is 3xm (i.e. your data is 3D)
trimesh uses the same face/vertex input as patch-with-face-vertex:
trimesh(TRI, P(1,:), P(2,:), P(3,:))
If you want the coordinates of all the triangular faces:
vx = P(:,1);
vy = P(:,2);
x = vx(TRI');
y = vy(TRI');
0 Comments
More Answers (1)
See Also
Categories
Find more on Polygons in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!