AutoLisp for reverse "S" curve

[racoon 0]

Hello everyone,

is there anyone who have lisp routine for drawing clothoides (spirals) between two arcs or "S" curve and who is willing to share it?

I hope so that is not to much to ask for. 

Best Regards!

[BIGAL 501]

This is a CIV3d link https://knowledge.autodesk.com/support/civil-3d/learn-explore/caas/CloudHelp/cloudhelp/2016/ENU/Civil3D-UserGuide/files/GUID-DD7C0EA1-8465-45BA-9A39-FC05106FD822-htm.html

 

The formula is out there just need a good reference for a couple of the values required.

[racoon 0]

Thanks a lot!