Intersection of Cylinder and Sphere

This model is a curve formed by the intersection of a cylinder and a sphere. The curve is the solution set to the equations f(x,y,z) = x^2 + y^2 + z^2 - sphere_rad^2
g(x,y,z) = (x-cyl_xcenter)^2 + y^2 - cyl_rad^2

The parameters sphere_rad^2, cyl_xcenter, and cyl_rad control the radius of the sphere, the position of the cylinder's axis, and the radius of the cylinder, respectively.

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