Place points on a curve at constant distance intervals, as measured in 3D space.

Input parameters:

1. Cr → Curve to divide.
2. Ds → Distance between segment ends.
3. Pr → Include the last segment if it is shorter than the specified distance.
   •  True → Include
   • False → Exclude

Output parameters:

1. Pt → Points at fragment transitions.
2. Tn → Tangent vectors at transitions.
3. Lc → Curve loci at transitions.