[cgma-dev] r1546 - cgm/trunk/geom

[Jason Kraftcheck]

janehu at mcs.anl.gov wrote:
> Author: janehu
> Date: 2008-01-18 15:50:04 -0600 (Fri, 18 Jan 2008)
> New Revision: 1546
> 
> Modified:
>    cgm/trunk/geom/RefFace.cpp
> Log:
> Adding comments for RefFace change.
> 
> Modified: cgm/trunk/geom/RefFace.cpp
> ===================================================================
> --- cgm/trunk/geom/RefFace.cpp	2008-01-18 21:46:33 UTC (rev 1545)
> +++ cgm/trunk/geom/RefFace.cpp	2008-01-18 21:50:04 UTC (rev 1546)
> @@ -1486,6 +1486,9 @@
>  
>  CubitStatus RefFace::get_point_normal( CubitVector& origin, CubitVector& normal )
>  {
> +   // non-planar surface can calculate for point normal too. If certain
> +   //geometry engine can't provide normal for non-planar surfaces, check 
> +   //should be done in the geometry engine level.
>     //if( is_planar() == CUBIT_FALSE)
>     //   return CUBIT_FAILURE;

Yes, it is possible to return a normal for non-planar surfaces.  The
RefFace::normal_at function is there to query that.  The above function is
intended to query the geometric definition for a planar surface.  At what
location on the non-planar surface do you return the normal?

- jason