The -c switch
- Creates segments on the
convex hull of the triangulation.
- If you are triangulating a vertex set, this switch causes a
.poly file to
be written, containing all edges in the convex hull.
- If you are triangulating a PSLG,
this switch specifies that the whole convex hull of the PSLG should
be triangulated, regardless of what segments the PSLG has. If you do not
use this switch when triangulating a PSLG, it is assumed that you
have identified the region to be triangulated by surrounding it
with segments of the input PSLG.
- Beware: if you are not careful, this switch can cause the
introduction of an extremely thin angle
between a PSLG segment and a convex hull segment, which can cause
overrefinement.
- If you are refining a mesh, this switch works
differently; it generates the set of boundary edges of the mesh,
including boundaries of holes.
(This is useful if no .poly file was read.)
Detailed information on convex hulls
and mesh boundaries.
Return to command line switches.
Return to Triangle home page.
jrs@cs.berkeley.edu