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Question by jjrage · Mar 27, 2020 at 01:59 AM · rotationdirectionaxisrotation axisfacing

Control object yaw by two axis

I'm developing AR application and I need implement custom real-world map (like Google map) which would be controlled just like there. To implement this I decide to set user marker facing direction based on AR camera rotation. It works good when I'm hold my phone vertical and rotate camera by Y-axis. But it works terrible when I turn my phone horizontally. At this moment user marker direction is different from camera Y-axis, and correspond to Z-axis. The question is: how to implement user marker facing based on Y and Z rotation values of AR camera?

P.S for better understanding I recommend to look on behaviour in "Google Maps" application. Try to hold device vertical and rotate it by Y-axis and than turn your phone horizontal and rotate it by Z-axis. Behaviour of user marker would be the same. alt text

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Answer by BBIT-SOLUTIONS · Mar 27, 2020 at 03:07 AM

Sounds like you are trying to use global axis and/or global rotation. Did you try to use localRotation instead already?

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avatar image jjrage · Mar 27, 2020 at 10:46 AM 0
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Yes, I'm using localRotation now. The problem is I can't always control marker facing only by Y-axis of camera. When I rotate phone horizontally marker facing correspond to Z-axis of camera. And the question is how to combine these behaviours (rotating on Y-axis when phone in verical position and on Z-axis when phone in horizontal position)

avatar image BBIT-SOLUTIONS jjrage · Mar 27, 2020 at 02:41 PM 0
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$$anonymous$$aybe use a simple if-condition. Something like that:

 if(Screen.width>Screen.height){
     //rotate around Z-axis
 }
 else{
     //rotate around Y-axis
 }

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