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Question by Ixniy · Jan 21, 2018 at 06:35 PM · rotationtransformanglevectorvector2

Rotate an object around another object at an angle from the X axis?

Transform.RotateAround is incorrect answer, because it adds value to existing rotation.

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avatar image andracer108 · Jan 21, 2018 at 07:06 PM 0
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If I'm understanding correctly, you want to rotate an object around another one on the x-axis only, right? And you don't want RotateAround as it actually adds to an angle rather than just apply it?

avatar image Ixniy andracer108 · Jan 21, 2018 at 07:09 PM 0
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Yes exactly.

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Answer by andracer108 · Jan 21, 2018 at 07:50 PM

Alright, so here is my solution. In reality, RotateAround() could still be useful to you. You can solve your problem by creating a function called "Rotate" for example with a float parameter called "literalAngle". This parameter would be the angle you want your B object to have. In the actual function, you would use RotateAround() function and in the angle parameter, you would negate "literalAngle" with the x euler angle of the B object. Here's a snippet which should explain better what I mean:

 public GameObject centre;
 
 void Update () {
             
             if (Input.GetKeyUp(KeyCode.Space))
             {
                 Rotate(54);
             }
     
     }
     
     void Rotate(float literalAngle)
     {
             transform.RotateAround(centre.transform.position, -Vector2.left, literalAngle - transform.eulerAngles.x);
     }

The script in which this code is found in should be attached to the B object and you should also drag the A object in the "centre" variable from the Inspector. When you play, press space to rotate the object to the desired angle. If you press again, nothing would happen as since the x-angle and the literAngle are the same, the rotation would result to 0. Hope this helps! And if it did, kindly mark as correct. :)

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