GlSurf version 3
Résumé
GlSurf is a program (similar to Surf) to draw surfaces and curves from their implicit equations (that is drawing the set of points (x,y,z) such that f(x,y,z) = 0). It offers an intuitive and simple syntax to construct your functions, it can draw multiple surfaces simultaneously and it can use all the power of OpenGl to animate the surface, use transparency, etc ... web page : http://www.lama.univ-savoie.fr/~raffalli/glsurf.html