Hi Ilia, If one side of the plane should be red, and the other blue then you could render two polygons for the plane, each with opposite winding and colour, then use glCullFace(osg::CullFace) to cull the faces to give the illusion of changing colour. The other technique you could use of two sided colour in the OpenGL lighting/material model, not all hardware/drivers supports two side lighting though.
Robert. On Thu, Sep 11, 2008 at 11:22 AM, Korolyov Ilia <[EMAIL PROTECTED]> wrote: > Hello > > I need to draw a plane (more exactly two lines by three points). Problem > is in plane color. It must depends on camera position relative > plane side - red or blue. > > I did it with CullCallback, because it's only one way to get access to > camera, which I can find. > > What is right way to do it? > > Thanks > Ilia > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
