**THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED**

*On 18/05/2010 at 02:47, xxxxxxxx wrote:*

User Information:

Cinema 4D Version: 11.5

Platform: Windows ;

Language(s) : C++ ;

---------

Hey everyone,

I have created a rotation matrix for a specific polygon on a given object. I would like to now determine if any other point in the scene intersects that polygon.

My thought is that I can convert the point in space in to the local coordinates of the rotation matrix and then determine if the z axis is at 0. THis, in theory will determine if the point has intersected with the polygon? Right?

If this is accurate, my question is, how to I convert the coordinates of the point in to the local coordinates of the rotation Matrix?

Thanks for your help.

~Shawn