koobas.hobune.stream
Having four objects: ObjectA, CameraA, ObjectB and CameraB, how can I "imitate" rotation from CameraA to CameraB?
Hello! I am trying to apply a rotation of CameraA on CameraB. But taking into consideration Objects A and B. For example: If CameraA is looking at ObjectA, the CameraB should look at ObjectB. If CameraA is looking at 45 degrees to the left of Object A, the CameraB should look at 45 degrees to the left of Object B.
The ObjectA is identical to ObjectB. But their rotation is different.
Anyone have any suggestions?
Thanks.
This thread has an answer for how to get a relative rotation. https://answers.unity.com/questions/35541/problem-finding-relative-rotation-from-one-quatern.html Applying it to your situation:
Quaternion relativeRotation = Quaternion.Inverse(ObjectA.transform.rotation) * CameraA.transform.rotation;
CameraB.transform.rotation = ObjectB.transform.rotation * relativeRotation;
If you need to update the position too, I'm pretty sure it's:
Vector3 relativePosition = Quaternion.Inverse(ObjectA.tranform.rotation) * (CameraA.transform.position - ObjectA.transform.position);
CameraB.transform.position = ObjectB.transform.position + ObjectB.transform.rotation * relativePosition;
Thanks. I had seen the relative rotation answer. But I had not been able to do it work. I had reversed the order of "multiplication". Now, it works fine.
Tank you so much.
