intersectCircleCircle

Test whether the one circle with center <code>(aX, aY)</code> and square radius <code>radiusSquaredA</code> intersects the other circle with center <code>(bX, bY)</code> and square radius <code>radiusSquaredB</code>, and store the center of the line segment of intersection in the <code>(x, y)</code> components of the supplied vector and the half-length of that line segment in the z component. <p> This method returns <code>false</code> when one circle contains the other circle. <p> Reference: <a href="http://gamedev.stackexchange.com/questions/75756/sphere-sphere-intersection-and-circle-sphere-intersection">http://gamedev.stackexchange.com</a>

@param aX the x coordinate of the first circle's center @param aY the y coordinate of the first circle's center @param radiusSquaredA the square of the first circle's radius @param bX the x coordinate of the second circle's center @param bY the y coordinate of the second circle's center @param radiusSquaredB the square of the second circle's radius @param intersectionCenterAndHL will hold the center of the circle of intersection in the <code>(x, y, z)</code> components and the radius in the w component @return <code>true</code> iff both circles intersect; <code>false</code> otherwise