ScriptReference/Rigidbody2D-rotation

[giscus[bot]]

ScriptReference/Rigidbody2D-rotation

https://docs.unity3d.com/ScriptReference/Rigidbody2D-rotation.html

[qwe321qwe321qwe321]

How does Rigidbody2D read transform rotation?

[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static quaternion ToPositiveQuaternion(quaternion q)
{
    return q.value.w < 0.0f ? -q.value : q.value;
}
 
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static float ZRotationFromQuaternion(quaternion q)
{
    var positiveQ = ToPositiveQuaternion(q);
    return 2.0f * math.atan2(positiveQ.value.z, positiveQ.value.w);
}
 
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static quaternion ZQuaternionFromQuaternion(quaternion q)
{
    return QuaternionFromZRotation(ZRotationFromQuaternion(q));
}
 
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static quaternion QuaternionFromZRotation(float rotation)
{
    return new quaternion(0.0f, 0.0f, math.sin(0.5f * rotation), math.cos(0.5f * rotation));
}