/**
* Creates a camera positioning matrix from the given eye and target points
* and up vector.
*
* @param eye location of the eye
* @param target location of the target
* @param up vector pointing upwards
* @return
*/
public static Matrix4 lookAt(Point3 eye, Point3 target, Vector3 up)
{
Matrix4 m = Matrix4.fromBasis(OrthoNormalBasis.makeFromWV(Point3.sub(eye, target, new Vector3()), up));
return(Matrix4.translation(eye.x, eye.y, eye.z).multiply(m));
}
