From: Brian Furtaw (brian++at++sgi.com)
Date: 05/13/2002 03:31:05
So a couple of options you could turn off back face culling, or traverse
the scenegraph and recompute all the normals or you could tell OpenGL to
reverse it sense of normals.
So in the pfChannel draw callback,
pfClear();
glCullFace(GL_FRONT);
glEnable(GL_CULL_FACE);
pfDraw();
or
..recompute the normals..
or
pfClear();
glFrontFace(GL_CW);
pfDraw();
Brian
Thomas Proell wrote:
>
> Brian Furtaw wrote:
> >
> > You could place a pfSCS at the top of your scene graph which specifies
> > -1.0 for the axis you wish to mirror the scene about.
>
> Unfortunately that didn't work. The DCS was mirrord, okay - but the
> normals of the polygons were mirrored, too. So, all the objects seemed
> to be transparent, because you could see through the front side.
>
> Thomas
>
> --
> Dipl.-Inform. Thomas Pröll
> Lehrstuhl für Steuerungs- und Regelungstechnik
> Technische Universität München
> Tel.: +49 89 289-23404 Email: Thomas.Proell++at++ei.tum.de
--
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