/// <summary>
/// Returns a distance to the closest point on the circle
/// </summary>
/// <returns>Positive value if the point is outside, negative otherwise</returns>
public static float PointCircle(Vector2 point, Circle2 circle)
{
return(PointCircle(point, circle.center, circle.radius));
}
/// <summary>
/// Returns the distance between the closest points on the segment and the circle
/// </summary>
public static float SegmentCircle(Segment2 segment, Circle2 circle)
{
return(SegmentCircle(segment.a, segment.b, circle.center, circle.radius));
}
/// <summary>
/// Returns the distance between the closest points on the line and the circle
/// </summary>
public static float LineCircle(Line2 line, Circle2 circle)
{
return(LineCircle(line.origin, line.direction, circle.center, circle.radius));
}
/// <summary>
/// Returns the distance between the closest points on the ray and the circle
/// </summary>
public static float RayCircle(Ray2D ray, Circle2 circle)
{
return(RayCircle(ray.origin, ray.direction, circle.center, circle.radius));
}
/// <summary>
/// Returns the distance between the closest points on the circles
/// </summary>
/// <returns>
/// Positive value if the circles do not intersect, negative otherwise.
/// Negative value can be interpreted as depth of penetration.
/// </returns>
public static float CircleCircle(Circle2 circleA, Circle2 circleB)
{
return(CircleCircle(circleA.center, circleA.radius, circleB.center, circleB.radius));
}