I thought this would be easy, but I have been working on it all day without success. I want to create and adaptive component for a curtain panel where the corner at point 2 is always at a right angle, but the other corners will vary. I want to constrain reference lines that remain vertical and horizontal respectively, and a fixed distance from point 2. I can am able to properly constrain the point above and too the left of Point 2, but have not found a way to force the vertical and horizontal crossbars to stay that way. I tried adding an angular dimension to the reference line between points 1 and 2 to the vertical crossbar, but I can't edit it. I'm new at this so hopefully this is something obvious I am missing.
Panel Constraints.png