/// <summary>
/// From a Vector director, Get the quaternion representing this vector
/// the up vector can be Vector3.up if you have no reference.
/// </summary>
/// <param name="vectorDirector"></param>
/// <param name="upNormalized">default is Vector3.up</param>
/// <returns>Quaternion representing the rotation of p2 - p1</returns>
public static Quaternion QuaternionFromVectorDirector(Vector3 vectorDirector, Vector3 upNormalized)
{
Matrix4x4 rotationMatrix = ExtMatrix.LookAt(vectorDirector, vectorDirector * 2, upNormalized);
Quaternion rotation = rotationMatrix.ExtractRotation();
return(rotation);
}
/// <summary>
/// From a Line, Get the quaternion representing the Vector p2 - p1
/// the up vector can be Vector3.up if you have no reference.
/// </summary>
/// <param name="p1">point 1</param>
/// <param name="p2">point 2</param>
/// <param name="upNormalized">default is Vector3.up</param>
/// <returns>Quaternion representing the rotation of p2 - p1</returns>
public static Quaternion QuaternionFromLine(Vector3 p1, Vector3 p2, Vector3 upNormalized)
{
Matrix4x4 rotationMatrix = ExtMatrix.LookAt(p1, p2, upNormalized);
Quaternion rotation = rotationMatrix.ExtractRotation();
return(rotation);
}