Differences

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--- general [2020/04/10 18:10]
paul [Rotations]
+++ — (current)
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-====== General ======
-===== Rotations =====
-Unity uses 3 rotation systems. [[https://www.youtube.com/watch?v=kYOtk5a6_x4|Intro to Quaternion Rotations (in Unity)]]
-  - Euler Angers - rotation about x, y, z axis
-  - Angle Axis - A normalized Vector3 representing the axis about which to rotate by float angle amount
-  - Quaternions - Angle Axis rotation representation that have been scaled to improve performance.
-<code c#>
-// Convert from Quaternion to Euler:
-Vector3 inEuler = quaternionRotation.eulerAngles;
-// Convert Euler to Quaternion
-Quaternion inQuaternion = Quaternion.Euler(inEuler);
-// To Angle-Axis
-Quaternion randomQuaternion = Random.rotation;
-float angle;
-Vector3 axis;
-randomQuaternion.ToAngleAxis(out angle, out axis);
-// And back
-Quaternion rotation = Quaternion.AngleAxis(angle,axis);
-</code>