/// <summary>
/// Determines if there is a collision between a circle and rectangle
/// </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)
{
float nX = MathHelper.Clamp(c.Center.X, r.Left, r.Right);
float nY = MathHelper.Clamp(c.Center.Y, r.Top, r.Bottom);
return(Math.Pow(c.Radius, 2) >= Math.Pow(c.Center.X - nX, 2) + Math.Pow(c.Center.Y - nY, 2));
}
/// <summary>
/// Determines if this BoundingPoint collides with a BoundingCircle
/// </summary>
/// <param name="c">the BoundingCircle</param>
/// <returns>true on collision, false otherwise</returns>
public bool CollidesWith(BoundingCircle c)
{
return(CollisionHelper.Collides(c, this));
}
/// <summary> /// Alternate call /// </summary> /// <param name="c"></param> /// <param name="r"></param> /// <returns></returns> public static bool Collides(BoundingCircle c, BoundingRectangle r) => Collides(r, c);
/// <summary>
/// Detects a collision between a circle and point
/// </summary>
/// <param name="c">the circle</param>
/// <param name="p">the point</param>
/// <returns>true on collision, false otherwise</returns>
public static bool Collides(BoundingCircle c, BoundingPoint p)
{
return(Math.Pow(c.Radius, 2) >= Math.Pow(c.Center.X - p.X, 2) + Math.Pow(c.Center.Y - p.Y, 2));
}
/// <summary>
/// Detects a collision between two circles
/// </summary>
/// <param name="c1">the first circle</param>
/// <param name="c2">the second circle</param>
/// <returns>true for a collision, false otherwise</returns>
public static bool Collides(BoundingCircle c1, BoundingCircle c2)
{
return(Math.Pow(c1.Radius + c2.Radius, 2) >= Math.Pow(c2.Center.X - c1.Center.X, 2) + Math.Pow(c2.Center.Y - c1.Center.Y, 2));
}
