/// <summary>
/// Detects collision between a rectangle and a circle
/// </summary>
/// <param name="c">the bounding circle</param>
/// <param name="r">the bounding rectangle</param>
/// <returns>True for collision, false otherwise</returns>
public static bool Collides(BoundingCircle c, BoundingRectangle r)
{
float nearestX = MathHelper.Clamp(c.Center.X, r.Left, r.Right);
float nearestY = MathHelper.Clamp(c.Center.Y, r.Top, r.Bottom);
return(Math.Pow(c.Radius, 2) >=
Math.Pow(c.Center.X - nearestX, 2) +
Math.Pow(c.Center.Y - nearestY, 2));
}
/// <summary>
/// Tests for collision between this a bounding circle
/// </summary>
/// <param name="other">The bounding circle</param>
/// <returns>True for collision, false otherwise</returns>
public bool CollidesWith(BoundingCircle other)
{
return(CollisionHelper.Collides(other, this));
}
/// <summary> /// Detects collision between a rectangle and a circle /// </summary> /// <param name="r">the bounding rectangle</param> /// <param name="c">the bounding circle</param> /// <returns>True for collision, false otherwise</returns> public static bool Collides(BoundingRectangle r, BoundingCircle c) => Collides(c, r);
/// <summary>
/// Detects collision between two BoundingCircles
/// </summary>
/// <param name="a">The first BoundingCircle</param>
/// <param name="b">The second BoundingCircle</param>
/// <returns>true for collision, false otherwise</returns>
public static bool Collides(BoundingCircle a, BoundingCircle b)
{
return(Math.Pow(a.Radius + b.Radius, 2) >=
Math.Pow(a.Center.X - b.Center.X, 2) +
Math.Pow(a.Center.Y - b.Center.Y, 2));
}