How to point this compass to north?

Development Programming & Scripting
1

Hey Guys,

I made this compass and i want to use it in game, but I can’t figure out how to point the pointer to north (X axes).
It’s most likely a very easy solution, but that solution is very welcome :).

55132-compass_01.png
55132-compass_01.png871×463 351 KB

I have a Blueprint Class which has all the components, and i need to rotate the pointer on the Yaw.

55133-compass_02.png
55133-compass_02.png785×420 77.9 KB

Since I’m here can someone tell me how to get the ring on the top of the compass to react to physics.

Thanks for your time :slight_smile:

2

I think you have to solve a two planes intersection problem ( the compass is the first plane, and the Axis the other one) the intersecting line gives you the absolute rotation of the pointer.

https://www.youtube.com/watch?v=o7CfCDkRwfY

Think a few about it, if you need more help I will try to sholve it in UE.

Good luck.

3
  1. Get Actor Rotation and use the “Y” value and plug it directly into your pointer rotation.