Re: gluTesselation - Combine Problems

<willy.pell@[EMAIL PROTECTED]
> wrote in message 
news:c45bd917-ce46-4f04-82e7-4cf6508e6e15@[EMAIL PROTECTED]
 Aug 20, 5:40 pm, "jbwest" <jbw...@[EMAIL PROTECTED]
> wrote:

[...]


>
> Gosh, it's been a while... Is it a closure problem? Do you need to add a
> last point = 1st in the input data to close up the polygon ?
>
> jbw

>I've tried w/ and w/o a last==first.  It's funny, it fixes some of the
>counties and breaks just as many others.  Any other thoughts?  My next
> move is to write my own tessellation algorithm.


That's definitely a closure, off-by-one or last-triangle logic problem.
I've 
never had problems with the much-maligned tesselator with very complex 
geometries. Surely you can just trace what's being emitted and see why the

last triangle isn't being created (or has the wrong winding ?).

jbw