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How to point this compass to north?

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 :).

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

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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 :)

Product Version: UE 4.8
compass_01.png (377.2 kB)
compass_02.png (80.6 kB)
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asked Aug 21 '15 at 11:16 AM in Blueprint Scripting

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2 answers: sort voted first

1) Get Actor Rotation and use the "Y" value and plug it directly into your pointer rotation.

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answered Aug 21 '15 at 11:36 AM

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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.


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

Good luck.

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answered Aug 21 '15 at 11:33 AM

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