public static bool IsOffscreen(Rectangle extent, BoundingCircle bounds)
{
// Offscreen if closest point on extent is > radius distance away.
AABB extentAABB = new AABB(new Vector2(extent.Left, extent.Top),
new Vector2(extent.Right, extent.Bottom));
Vector2 closestPoint = extentAABB.ClosestPointTo(bounds.Position);
Vector2 displacement = closestPoint - bounds.Position;
return displacement.LengthSquared() > bounds.Radius * bounds.Radius;
}
public void Add(AABB box)
{
if (box.Min.X < Min.X)
{
Min.X = box.Min.X;
}
if (box.Max.X > Max.X)
{
Max.X = box.Max.X;
}
if (box.Min.Y < Min.Y)
{
Min.Y = box.Min.Y;
}
if (box.Max.Y > Max.Y)
{
Max.Y = box.Max.Y;
}
}
public bool Intersects(AABB box)
{
return Min.X <= box.Max.X && Max.X >= box.Min.X &&
Min.Y <= box.Max.Y && Max.Y >= box.Min.Y;
}