/// <summary>
/// Look at target
/// </summary>
/// <param name="target">Target</param>
/// <param name="up">Up vector</param>
/// <param name="yAxisOnly">Rotate Y axis only</param>
/// <param name="interpolationAmount">Interpolation amount for linear interpolation</param>
/// <param name="updateState">Update internal state</param>
public void LookAt(Vector3 target, Vector3 up, bool yAxisOnly = true, float interpolationAmount = 0, bool updateState = false)
{
if (this.Parent != null)
{
//Set parameters to local space
var parentTransform = Matrix.Invert(this.Parent.FinalTransform);
target = Vector3.TransformCoordinate(target, parentTransform);
}
if (!Vector3.NearEqual(this.position, target, new Vector3(MathUtil.ZeroTolerance)))
{
var newRotation = Helper.LookAt(this.position, target, up, yAxisOnly);
if (interpolationAmount > 0)
{
newRotation = Quaternion.Lerp(this.rotation, newRotation, interpolationAmount);
}
this.SetRotation(newRotation, updateState);
}
}
