CloudCompare forum

Hi Daniel,

I have discovered one bug in CC during work with meshes.
This is the mesh I work with. It has scalar field.

I try to split it into two parts, depending on the scalar value. Got this:

But the area between meshes is deleted:

As a result, the area of initial full mesh is not equal to the sum of splitted meshes.
Is there a possibility to fix it?

Thanks in advance!

Oh, this is not a bug, but more a 'feature' ;)

Triangles are discarded whenever at least one of their vertex scalar value is out of the range. And as when we 'split' we simply apply one range and the other, the triangles one the border are always removed!

But I agree we should find a way to be smarter :D

Is there a possibility to save scalar value in the triangle and not in the vertex?

Well CloudCompare is a point cloud software, and therefore it considers meshes as a point cloud with connectivity (not as sets of triangles ;).

But for this particular segmentation issue, the fix is easy (we just need to find the time to apply it ;).