CGAL users discussion list

[Ravi Kumaran <>]

>This is not easily doable
>(this imply hacks on non-documented stuff, and I am not even sure it will 
>work as expected).

>If you describe why you need "color" in faces (and what expect in the
>output), we may provide an alternative solution
.
Thanks for the response. I've a small CAD program that shows different solid 
shapes which have different user selected colors. User can fuse more than one 
such solids with each other, I try to accomplish that by converting the solid 
polyhedra to Nef polyhedra and then performing union operation. Since there 
is no way to maintain the color information of faces as they pass through Nef 
polyhedra operations, the final solid will have to be shown in a single 
arbitrary color. This is not a big problem if the user's ultimate goal is 
mainly solid modelling or 3D printing. But the colors are important if the 
goal is 3D scene design/ visual effects etc.

Could you point me in any particular direction, regarding the possible hack 
you mentioned?

Thanks.
--
Ravi