Tetrahedral meshes

Dear all,

I am trying to convert a geometry from a third party tool given as a set of tetrahedrons.
After reading the list of tetrahedrons in my code I construct the tetrahedron by means
of the TGeoArb8 class, generate the right transformation, and finally I put it in an
assembly. Unfortunately I get some strange artefacts when I try to track a particle in that
geometry, i.e. the trackingmanager recognizes a boundary where there should be no boundary.
I checked the final root geometry with x3d and everything seems o.k. to me.
Is there a better way to convert the tetrahedrons to a root geometry ?



Arb8 is the only way to represent tetrahedrons. Can you post the geometry.root file ?