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devel / comp.os.ms-windows.programmer.win32 / OpenGL : a gluTessVertex problem (of sorts)

OpenGL : a gluTessVertex problem (of sorts)

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From: address@not.available (R.Wieser)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: OpenGL : a gluTessVertex problem (of sorts)
Date: Sat, 12 Feb 2022 19:37:20 +0100
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by: R.Wieser - Sat, 12 Feb 2022 18:37 UTC

Hello all,

I've been using gluNewTess and related functions (to dissect a polygon into
triangles), which, in a test environment, gave the expected results.

The thing is that when I tried to use on-the-fly creation of a polygon the
vertices returned by the GLU_TESS_VERTEX callback seemed to contain garbage.
:-(

After a bit of headscratching (trying this-and-that) I had to conclude that
the gluTessVertex function *doesn't* save the provided vertex internally -
meaning that I would need to keep all those vertices available (at static
locations) until after the gluTessEndPolygon function returns.

Which is ... less than ideal to me (on-the-fly creation and all that).

Question : Is there a way (setting?) to have gluNewTess manage the vertices
itself ?

Regards,
Rudy Wieser

Subject	Author
OpenGL : a gluTessVertex problem (of sorts)	R.Wieser