On Thu, Aug 7, 2008 at 7:08 AM, Ralf Gerlich wrote:
> I have just checked once more and found that triangles for the extremely
> small triangle parts simply do not exist. They are not generated by
> TriangleJRS.
Hi Ralf,
As far as I know, terragear doesn't do extra edge splitting before handing
data to TriangleJRS. However at some point in the pipeline there is a
routine that attempts to identify "slivers" and merge them with neighboring
areas. The heuristics for identifying a sliver are pretty loose and weren't
designed with high detail, high polygon count scenery in mind. You may want
to greatly constrain the area/angle checks, or remove the sliver check
entirely. This goes back a long time, but I think the sliver checking was
originally an attempt to work around numerical problems when letting
TriangleJRS subdivide triangles to get an "ideal" Delauney triangulation.
We've since given up on that because it generates way too many unneeded
triangles so the sliver check could probably go away without hurting
anything.
I don't know if this will help your specific situation, but I don't think it
will hurt.
Curt.
--
Curtis Olson: http://baron.flightgear.org/~curt/
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