[gschaider]

This problem seems to have been introduced between 1.4.1 and 1.5: in earlier versions of OF even when the triangle was not hit the pointHit returned by triangle::intersection got some value. In 1.5 and 1.6 vector::zero is returned. Nevertheless this point value is then used in triangle::ray to calculate the distance to this point. I guess usually this distance is not used, but in slidingInterface:rojectPoints() (approx line 303 of the source file) this distance is used to discard points. Consequently stitchMesh fails (Usually complaining about "Duplicate point found in cut face.") for some meshes

After applying the attached patches to 1.5.x and 1.6 and recompiling stitchMesh happily stitched meshes on which previously it failed.

I don't know whether these patches affect other utilities as well

If you want a mesh to verify the bug/fix, I can provide you with one

Bernhard