Once again the ShapeDrawbles confuse the issue 1) YOU CANNOT do what you want with ShapeDrawables END of story
1) DONT USE ShapeDrawable they are there as an aid to some geometric operations and not designed FOR Rendering use ( Robert has said many times he regrets the dang things) 2) Shape drawables DO NOT override the base class virtual functions osg::DrawAble::asGeometry so will ALWAYS return NULL 3) Normal Geometry is created similar to this osg::Node->osg::Geode->osg::Geometry[has](Verts,Text coords, Normals etc) And osg::Geometry does override osg::DrawAble::asGeometry thus will return correctly SO you can then do some along the lines of: So you travesre the osg::Node ( what ever type is maybe) retrieve each Geode For each Geode retrieve one or more Drawables osg::Geode::getDrawable( int i ) For each Drawable retrieve on or more Geometry pointers ( with a cast ) >From each Geoemtry node retrieve the require geoemtry arrays/info required But to be clear you CANNOT do this with ShapeDrawables it is not an instance of osg::Geometry -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alberto Luaces Sent: Thursday, July 31, 2008 9:45 AM To: OpenSceneGraph Users Subject: Re: [osg-users] RE : Re: Getting texture coordinates of loadedmodels Franclin, El Jueves 31 Julio 2008ES 14:33:30 Franclin Foping escribió: > visitorto retrieve its Drawable objects, turn them into Geometry > objects and use your trick but I was wrong as it is impossible to > convert from Drawable to Geometry. You still don't get it. You are not converting one type to another, but the pointers that reference those objects. This is only possible if the object pointed is really of the type you are requesting. I have been doing this a zillion times until now, provided that I know beforehand that my meshes are stored as Geometry(s). As you have been recommended, it's important that you know how polymorphism works in C++ and the rest of OO languages. Then you will understand why you can't magically convert one object of one class to another. As for the retrieval of the UV coordinates of a ShapeDrawable, they are hard-wired directly into the code, so I'm afraid you'll have to read OSG code to find how they are calculated (ShapeDrawable.cpp). The good news is that you won't have to do this work at runtime anymore :) Alberto _______________________________________________ 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
