c# - 四元数反向旋转？

Question

所以我有一个将网格位置转换为全局空间的方法:

public Vector3 GridToGlobal(IVector3 gridPos)
{
 Vector3 globalPos = new Vector3(gridPos.x, gridPos.y, gridPos.z);
 globalPos *= Scale;
 globalPos = Container.transform.rotation * globalPos;
 return globalPos;
}

现在，当我想做相反的事情时，我将如何将矢量旋转到网格空间中？

public IVector3 GlobalToGrid(Vector3 globalPos)
    {
        globalPos -= Container.transform.position;
        globalPos = Container.transform.rotation * globalPos; //this will obviously rotate in the wrong direction
        globalPos /= Scale;
        return new IVector3((int)Mathf.Round(globalPos.x), (int)Mathf.Round(globalPos.y), (int)Mathf.Round(globalPos.z));
    }

有什么想法吗？

Answer 1

您可以使用 Quaternion.Inverse() 函数。这会返回相反的旋转。所以应该反转。您可以这样使用它:

 transform.rotation = Quaternion.Inverse(target.rotation);

来源:http://docs.unity3d.com/Documentation/ScriptReference/Quaternion.Inverse.html