I would like to find a way to get the intersection points of a circle and a sphere in 3d. The center of each and their radii are known. This needs to be a general solution so that I can move the center of the sphere in steps and find the intersection at each step.(adsbygoogle = window.adsbygoogle || []).push({});

I am curious if this can be done by treating the circle as the intersection of a plane and sphere, finding the intersection of the 2 spheres (which will give a circle), then finding where that circle intersects the plane.

I need some help in working all of this out.

Heres is a link to someone else trying this, but I do not understand the solution...

Can anyone decode this for me? haha

http://www.newton.dep.anl.gov/askasci/math99/math99075.htm

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# Circle-Sphere 3D Intersection Points

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