CloudCompare forum

I think faces are not logically oriented (its just random) in the mesh I generate. You told me on your first answer that the orientation depend on the order of the vertices ("direct mode"). What is exactly this order ? maybe I can reorganized the order of the points of my triangles... !?

I made all my analyses in R (except what I am doing with your software ;) ). So, I generate my mesh with an alpha shape 3d function of R ("ashape3d") and I export it with another function of R ("writeOBJ"). I haven't many control on what I can export with this function... and the...

I found a way to export only the triangles of my meshes. But, the problem with the triangles orientation still persist. So I kept your method of i) sampled points on faces ii) re-orientation of the normals (spanning tree) and iii) made another mesh with PoisonSurface. However, on certain meshes (qui...

Thanks.
I didn't export all my meshes yet, but the format will be exactly the same with 3 sets for sure. I didn't find the way to load only the faces with cloudcompare. I'll working on the function that export my mesh in R to try to have only the faces ... or maybe try to find other functions.

Ok, thanks. Yes it could be nice to use re-orientation in command line mode.

Olivier

Hello Daniel,

Thanks a lot. Your method works well. I was wondering if there is a way to do the re-orientation of the nomals and run the qpoisonRecon plugin in command line mode ? I want to do this method in batch but I did'nt find the command line for these two steps in the wiki...

Olivier

Image 1 : Mesh of the tree crown at t0, and point cloud at t1 (black points we can see around the mesh) http://imageshack.com/a/img907/8594/yifZRO.png Image 2 : Point cloud at t1. The color gradients is for the distance to the mesh computed with C2M, from blue (negative) to red (positive). http://im...

Hello all, I do not understand exactly how the signed distance work when computing a cloud to mesh distance. I have imported a tree mesh in .obj format in cloud compare. This mesh is the "hull" of a tree crown (i.e the part of the tree with leaves and branches). Then, I have imported the p...

Hello Daniel,

I just installed the latest version and it works well.
Thank you very much.
Olivier

PS: note that it doesn't work for the version 2.6.1 (i.e X, Y and Z are always positive).

Hello Daniel, I re-opened the post because I have a similar question. I do not understand why we need normals to have signed X, Y or Z-distances ? I understand for the global distance between the two points but why for the distance on each dimension ? Maybe I don't understand something but when we c...