Re: gluTesselation - Combine Problems

On Aug 21, 9:11=A0am, "jbwest" <jbw...@[EMAIL PROTECTED]
> wrote:
> <willy.p...@[EMAIL PROTECTED]
> wrote in message
>
>
news:c45bd917-ce46-4f04-82e7-4cf6508e6e15@[EMAIL PROTECTED]
> On 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 =3D 1st in the input data to close up the polygon ?
>
> > jbw
> >I've tried w/ and w/o a last=3D=3Dfirst. =A0It's funny, it fixes some
of=
 the
> >counties and breaks just as many others. =A0Any other thoughts? =A0My
ne=
xt
> > 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
th=
e
> last triangle isn't being created (or has the wrong winding ?).
>
> jbw

I think I get closure, first =3D=3D last, but what is an: "Off by one" or
"last triangle logic problem"?  Thanks for the advice btw.