Hi Janick, On Mon, May 5, 2008 at 9:36 AM, Janick Martinez <[EMAIL PROTECTED]> wrote: > > Hi, Deriving your own class from osg::Drawable, you can have any > > internal draw implementation with your own datastructures. See the > > osgteapot example. -- mew > > > That seems to be a nice way to do the rendering, thank you! > > But what about interaction considerations? How would I, > for example, allow a user to specify points on the mesh > by just clicking on the surface? Is a ray -> triangle > intersection test also possible the same way?
The OpenGL rendering is done via overriding the Drawable::drawImplementation(..) as illustrated by the osgteapot example. To do CPU based interaction you'll such as intersection testing you'll need to implement the Drawable::accept(AttributeFunctor&) and accept(PrimitiveFunctor&) methods. Have a look at src/osg/ShapeDrawable.cpp and src/osg/Geometry.cpp to see how they implement these methods. Robert. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
