How to design and structure BGP Router IDs in IPv6-native networks.

I Have several Layers in a netdesign im working on. To show the direction of the net i have Pointlayer with triangles, whoms centre is the 90° angle. The Points are placed (snapped) at the intersection of two different Line layers (Layer RV & Layer HA). The Line from Layer HA always originates from that point where the triangle is placed. Now i want, that the triangles automatically rotate, so that one side points to the direction of the origin of the Line from Layer RV (but it must be parallel to the section of the line). The other side should point to the direction of the endpoint of the line from the Layer HA, but it has be perpendicular still. For imageination, i have pinned some pictures. Im trying for almost 3 days know, but didnt come to a working solution yet. Hope anyone can help.

NetDesign - CYSH Smiths Falls Airport MSFS24 receives a major update for the Canadian Airport in Ontario, introducing interactive doors, animated passengers, seasonal hangar behavior, and numerous realism improvements.

Rideau Valley Air Park is an aerodrome located south of Ottawa, Ontario, used primarily for gliders and ultralight aircraft. It has a single 1800 ft grass runway and is home to the Rideau Valley Soaring gliding club. These sceneries are carefully crafted for the MSFS 2024 walkaround mode, allowing the user to walk on patios […]