Hi,
> > You original asked for vertices... now you want triangles... is that > because you now know how to get the vertices, or is it that you now > know what you want more precisely?? I knew how to get the vertex array, but the problem is that I don't know how to get the vertices for each sub-polygon (triangles) generated by the tessellation. > Is that you are asking how to get the primitive data from a > PrimitiveSet Basically yes. My problem is that I don't really get how the tesselation works and how to create new polygons using the geometry modified by the tessellation. I thought that the tesselation would simply add new PrimitiveSet such as DrawArrays and that I could have created my new polygons using the getFirst() and getCount() function of DrawArrays with my vertexArray. Unfortunately, when I look at my geometry after the tesselation, it only has DrawElementsUByte, and I don't see how I could get a list of triangles from this PrimitiveSet. I've looked at the DOC, the headers and the source but I don't see what to do. > Might I also ask you for what purpose you want to know the > vertices/primitive data? What are you trying to do with it? For my project, I had to create a class that handles Surfaces (it displays anykind of polygon and it has some useful tools). And I have to implement a tool that "triangulate" the polygon and create new Surfaces with each triangle ; so instead of trying to implement my own tessellation algo, I thought I would simply use the osg tessellation. I'm really sorry for my lack of precision in my previous posts. And thank you a lot for taking the time to help me. Cheers, Bob ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48043#48043 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
