Hi Cory, Texture coordinates is a basic way to apply a texture on a geometry. For each vertex, you give a 2D coordinate data to associate a vertex and a texture point. OpenGl will interpolate the texture pixel between each vertex, depending on theses coordinates.
The 2D texture coordinate have to be like this in your texture image: [0,0] [1,0] |------------| | | | | | | | | |------------| [0,1] [1,1] In your example, with a single file of texture, you set the texture for each side. For each texture you set in OSG, you can set a texCoordinateArray. The index you set pyramidGeometry->setTexCoordArray(*0*,texcoords); correspond to the texture index you set before, when setting the texture. Have a look on Texture coordinate on the web, you'll find a lot of explanations. Hope this will help you. Regards, Vincent. 2009/1/21 Cory Riddell <[email protected]> > I'm working my way through some of the tutorials. Right now I'm on: > > http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials/BasicGeometry > > In the code on that page is this: > > osg::Vec2Array* texcoords = new osg::Vec2Array(5); > (*texcoords)[0].set(0.00f,0.0f); > (*texcoords)[1].set(0.25f,0.0f); > (*texcoords)[2].set(0.50f,0.0f); > (*texcoords)[3].set(0.75f,0.0f); > (*texcoords)[4].set(0.50f,1.0f); > pyramidGeometry->setTexCoordArray(0,texcoords); > > > Can somebody explain what this is doing? > > Thanks, > cr > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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