[Closed] Custom rubberband – line between screen 2D point and 3D point

I need a line between a rollout and a vertex.
Something similar to rubberband or gw.polyLine, the only thing is that gw.polyLine can be between 3D points,
but I need a line between the 2D Screen coordinate and 3D vertex.

Or may be a line between two 2D points if I convert 3D to 2D.

I should have finally multiple rollouts and lines.

Can you point me please to any direction how to do this?