Re: [Algorithms] Nearest point on plane for 2D IK

[David K. <da...@ik...>]

Hi,

I am looking for an algorithm to compute the intersecting point P between a ray and
a sphere. I know the center C and the radius R of the sphere, the origin O of the ray
and its direction V. Basically I need to find the closest intersection from O.

But that's not all: In addition to this, IF the ray does not intersect or is tangent to the
sphere, I need to know the tangential point with the sphere.

Does anybody know a fast and accurate solution to this problem? maybe a good web
site or some code would greatly help!...

Thanks,

David Kornmann.
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