public static bool testCircleVsCirlceOverlap(Vector2f centreA, float radiusA, Vector2f centreB, float radiusB)
{
float R = radiusA + radiusB;
return(AppMath.Vec2DistanceSqrt(centreA, centreB) <= R * R);
}
public static bool isPointInsideCircle(Vector2f centre, float radius, Vector2f point)
{
return(AppMath.Vec2DistanceSqrt(point, centre) <= (radius * radius));
}