BaseView::BackfaceCulling usage ?

[Helper]

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On 08/11/2010 at 16:54, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   11.5 
Platform:   Windows  ;   
Language(s) :     C++  ;

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Hi,

I need to know which polygon is visible in the current editor view.

So...
Bool BaseView::BackfaceCulling(const Vector& n, const Vector& p);
...would be OK for me.

But I don't know in which space (screen, camera, world)
the vectors should be, i tried a few combinations out,
but I always get strange results.
So maybe there is something wrong.

I use the Normals from CreatePhongNormals() and use
the first point of each polygon with its phong normal to
check for culling.

Did someone used this function before and knows how to use it ?

Thank you !!!