From screenshot you can see that I am trying to make lines from points on inner curve to points on outer curve. I do not use normal lines because later I want to control their lenght by other parameters.
You can see that lines are not going to points and are little offset.
gr_sdl_lines.gh (11.9 KB)
In the last 2 components I see you have the output of Divide Curve (which is a list of points) connected to the Direction input of Line SDL (which should be a vector).
If what you actually want is the direction to be the vector from the inner points to the outer ones, you need to construct that vector.
Thank you @DanielPiker I thouhgt i dont have to do it since SDL lines are “pointing to points”…