public static bool Cross(Box2D box, Box2D other, Vector2_ tp, ref Vector2_ hit)
{
if (box.Intersect(other))
{
return(true);
}
var o = box.center_;
tp -= o;
other.Set(other.center_ - o, other.size_ + box.size_);
box.SetCenter(Vector2_.zero);
double minx = Mathd.Min(0, tp.x), maxx = Mathd.Max(0, tp.x), miny = Mathd.Min(0, tp.y), maxy = Mathd.Max(0, tp.y);
var l1 = Mathd.Abs(other.leftEdge) < Mathd.Abs(other.rightEdge) ? other.leftEdge : other.rightEdge;
var l2 = Mathd.Abs(other.topEdge) < Mathd.Abs(other.bottomEdge) ? other.topEdge : other.bottomEdge;
bool b1 = false, b2 = false;
if (other.leftEdge < 0 && other.rightEdge > 0)
{
goto _l2;
}
_l1:
b1 = true;
if (l1 > minx && l1 < maxx)
{
var yy = tp.y / tp.x * l1;
if (yy > other.bottomEdge && yy < other.topEdge)
{
hit.Set(l1, yy);
hit += o;
return(true);
}
}
if (b2)
{
return(false);
}
_l2:
b2 = true;
if (l2 > miny && l2 < maxy)
{
var xx = l2 * tp.x / tp.y;
if (xx > other.leftEdge && xx < other.rightEdge)
{
hit.Set(xx, l2);
hit += o;
return(true);
}
}
if (!b1)
{
goto _l1;
}
return(false);
}
