public bool CollidesWith(Rectangle other)
{
decimal left1 = X;
decimal left2 = other.X;
decimal right1 = X + Width;
decimal right2 = other.X + other.Width;
decimal top1 = Y;
decimal top2 = other.Y;
decimal bottom1 = Y + Height;
decimal bottom2 = other.Y + other.Height;
if (bottom1 < top2 || top1 > bottom2 || right1 < left2 || left1 > right2)
return false;
return true;
}
public bool CollidesWith(Rectangle rect)
{
Circle circle = this;
double half_width = rect.Width / 2.0;
double half_height = rect.Height / 2.0;
double distance_x = Math.Abs(circle.X - rect.X - half_width);
double distance_y = Math.Abs(circle.Y - rect.Y - half_height);
// Quick rule-out checks.
if (distance_x > half_width + Radius || distance_y > half_height + Radius)
return false;
if (distance_x <= half_width || distance_y <= half_height)
return true;
// Measure the distance between the corner and the circle.
return Math.Sqrt(Math.Pow(distance_x - half_width, 2) +
Math.Pow(distance_y - half_height, 2)) <=Radius;
}