[cgma-dev] (no subject)

[Jane Hu]

Huayi，

In case you are wondering about how to model facets of triangles into a
geometry surface in cgm, here's the hint:

Under cgm/geom/facet, the call FacetModifyEngine::build_cholla_surfaces()
should give you a pointer to ChollaEngine.

>From ChollaEngine you can get ChollaSurface pointer:
ChollaEngine::get_surfaces( DLIList<ChollaSurface *> & cholla_surface_list )

For your case, there should be only one ChollaSurface generated.  Get its
EvalTool by get_eval_tool().

Then use the EvalTool to call project_to_facets(CubitVector &this_point,
                                CubitBoolean trim,
                                CubitBoolean *outside,
                                CubitVector *closest_point_ptr,
                                CubitVector *normal_ptr);

You should get all related info from this call then.

Hope it helps.

Jane


On Sun, Sep 29, 2013 at 9:59 PM, 魏华祎 <huayiwei1984 at gmail.com> wrote:

> Hi, There,
>
>     I have a polyhedral surface whose all of facets are triangles. Can
> cgma do such things: given a point near this surface,  then project the
> point to this surface? I am a newbie of cgma. I need your help, thanks very
> much.
>
> Best
>
> Huayi
>
>
>
>


-- 
Jane Hu

Asst. Researcher
Dept. of Engineering Physics
UW @ Madison

"And we know that for those who love God, that is, for those who are called
according to his purpose, all things are working together for good."
(Romans 8:28)
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