Hi Theodore,
you need to tell gmsh that the surface contains a hole. Define two line loops
- one for the
contour of the external polygon (say Line Loop 1) and one for the contour of
the ellipse (say
Line Loop 2). Then you define your surface for meshing as
Plane Surface(1) = {1,2}; // Subtract the interior of line loop 2
// from the
interior of line loop 1
See section 5.1.3 in gmsh reference manual or tutorial 3 on gmsh website.
If you don't have any lines to create line loops from (since you're loading an
stl file), take a
look at 'CreateTopology'.
Best regards,
Martin Vymazal
On Tuesday 30 April 2013 12:32:34 Ted Kord wrote:
Hi,
I have an STL mesh consisting of an irregular ellipsoid in an irregular
polygon. When I turn off
'surface faces' in the 'Options - Mesh', I can see the ellipsoid in the
polygon. What I'd like to
do is mesh just the containing polygon excluding the ellipsoid, i.e., the final
mesh will have a
hole where the ellipsoid should be. How can I do this in gmsh?
Theodore
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