///Returns whether a point lies in a circle (excludes being on the perimeter)
public static bool PointInCircle(Vector2 p, Circle c)
{
//if the distance from p and the center of the circle is less than the radius then p is within the circle
return(Vector2.Distance(p, c.WorldCenter) < c.GetRadius());
}
///Returns whether a point lies on the perimeter of a circle
public static bool PointOnCirclePerimeter(Vector2 p, Circle c)
{
//if the distance from p and the center of the circle is equal to the circle's radius then p is on the perimeter
return(Mathf.Approximately(Vector2.Distance(p, c.WorldCenter), c.GetRadius()));
}
/* Circle methods */
#region
///Returns whether two circles intersect
public static bool CircleIntersectsCircle(Circle c1, Circle c2)
{
//if the distance between the center of each circle adds up to less than the sum of the radii then they intersect
return(Vector2.Distance(c1.WorldCenter, c2.WorldCenter) < c1.GetRadius() + c2.GetRadius());
}