Dear Juzar. ff3d uses the marching tetrahedra algorithm to build surface meshes.
This algorithm uses characteristic functions of primitives (volumes). If a volume is null or if it does not contain any point of the background mesh, the algorithm fails. You are at least in the first situation since your box intersects your cylinders' union on there faces y=0. Best regards, Stéphane. _______________________________________________ ff3d-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/ff3d-users
