Find the points of a curve intersected by a series of parallel planes. This component outputs all points as a flat list.

Input parameters:

1. Cr → Curve to divide.
2. Pl → Contour base plane.
3. Of → Spacing between contouring planes.

Output parameters:

1. Pt → Points grouped according to their contour planes.
2. Tn → Tangent vectors at contour points.
3. Lc → Curve loci at contour points.