   CAD Applcation
  Hi to all,i'm looking for some information about developing a CAD application with opengl.At now, i'm always design and develop 3D software application using opensscenegraph, but i would like to design an application that use a CAD core for the mathematic and Openscenegraph for database and rendering.Is it possible to do that? Are there some web site where i could find information about "how to design and develop a CAD application software"?Thank you in advance.   
  Please don't Cross Post.   