dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Tue, Feb 26, 2008 at 01:53:18PM +0100, Kristian Oelgaard wrote:
> Quoting cosby@xxxxxxxxx:
> 
> > Hi all
> > 
> > I have experienced some problems with the IntersectionDetector, which
> > for a 3D mesh fails to locate cells that contain a given point when
> > calling the overlap function:
> > IntersectionDetector I;
> > I.overlap(point,array)
> > 
> > I have generated my 3D mesh with gmsh.
> > Could this have anything to do with the ordering of the vertices
> > in the tetrahedra ?
> 
> Maybe, don't know how overlap() works, but try to call mesh.order() after
> loading the mesh, this should reorder the mesh following the DOLFIN convention.
> 
> Kristian

Could the problem be that the intersection detector assumes that the
cells are oriented in a particular way? (The ordering that DOLFIN uses
means in particular that you can't assume anything about orientation.)

-- 
Anders