public DVector2(DVector2 r)
{
x = r.x;
y = r.y;
}
public static DVector2 TransformPoint(ref DRect r, DVector2 p)
{
return(new DVector2((r.width * p.x + r.x), (r.height * p.y + r.y)));
}
public static DVector2 Subtract(DVector2 a, DVector2 b)
{
return(new DVector2(a.x - b.x, a.y - b.y));
}