internal override bool GetCollisionCircle(CollisionCircle obj)
{
//float rd2 = Pow2(obj.Radius + Width);
//Vector2 ao = obj.Position - Position;
//Vector2 bo = obj.Position - End;
//if (ao.LengthSquared() <= rd2 || bo.LengthSquared() <= rd2) return true;
//if (!(Vector2.Dot(-Line, ao) * Vector2.Dot(Line, bo) >= 0)) return false;
//if ((Line.Y * obj.Position.X + Line.X * obj.Position.Y + Position.X * Line.Y - Position.Y * Line.X)
// / Line.LengthSquared() <= rd2) return true;
if (System.Math.Abs(MathUtilXNA.Cross(obj.Position - Begin, Line) / (Line.Length())) > obj.Radius) return false;
if (Vector2.Dot(Line, obj.Position - Begin) * Vector2.Dot(-Line, obj.Position - End) <= 0) return true;
if (obj.GetCollision(new CollisionPoint(Begin)) || obj.GetCollision(new CollisionPoint(End))) return true;
return false;
}
internal override bool GetCollisionCircle(CollisionCircle obj)
{
return obj.GetCollision(this);
}