Construct the intermediate positions, the ribs along two rails

***** My Scientific Developing Blog *****

 What we need to optimize is the intermediate curves by interpolation :-)

Step 1:

 Interpolate the torsions of the start and end CCC.

Step 2: 

  Build the intermediate snake by the give interpolated torsions. [The start point and vectors are also given].

Step 3:

 Optimize the intermediate snake to lay the start and end points on to the rails or as close as possible.