Curve offsets on Defined planes

[grybatur]

Hello,

After a search at forums, i decided to open this topic.

what i want to do create multiple offsets of a curve on different angled planar planes and this curves should be on this defined planes.

what i did so far is :
1- create a line from plane/surface perimeter curve.
2- offset or geometry translate this curves.

however i think plane or surface normals are not same with primary curve which i offseted.
at this point i dont know how to align curve normal to plane’s normal.

Help appreciated. Thank you

[jacob.small]

Assuming that the surface is a plane, try defining a coordinate system from the plane, and then make the lines on the coordinate system instead of in the world coordinate system.