Find the intersection points and overlaps between a curve and a surface.

Input parameters:

1. Cr → Curve for intersection.
2. Sf → Surface for intersection.

Output parameters:

1. Nx → Number of intersections found.
2. Pt → All intersection points.
3. Ov → All overlap curves.
4. Lc → Loci of all intersections on the curve.
5. Ls → Loci of all intersections on the surface.