On Mon, 04 Feb 2008 23:47:01 -0800, johnnash wrote:

> i am writing a scientific software in C language which will be use for
> calculation of radar cross section of large aerospace/marine objects.
> the technique i will be using is ray tracing. The aerospace/marine
> objects will be modelled by using NURBS surfaces. So a cad file
> containing these geometrical entities will be the input to my software.
> My questions are
>
> 1. how can i read such cad files in C language ?
>
> 2. How do I process the NURBS surfaces ? I mean how should I create a
> struct which will deal with each surface ?
>
> Please me or guide me to a ng where some graphics/c experts may be
> able to .

Don't even try this in C. Use C++. Here is the definitive site.

http://www.opennurbs.org/

--
Billy