internal void update()
{
Vector diff = new Vector(position, lookAt);
this.direction = -diff.normalize();
this.right = new Vector(0, 1, 0).cross(direction).normalize();
this.down = -right.cross(direction);
}
internal void update()
{
Vector diff = new Vector(position, lookAt);
this.direction = -diff.normalize();
this.right = new Vector(0, 1, 0).cross(direction).normalize();
this.down = -right.cross(direction);
}