Is there any method on earth that based on these contours, I know that the A contour is on the right of B contour? or vise versa as in the picture? I had been playing with the centroids and coordinate and it does not make sense so far from the result.
There is an idea that I think which is to draw a line base on the centroid at 45 degree toward (0,0) for both centroid and look at the y value crossing.
The question is how can I draw a line from a given centroid at 45 degree and manage to get the crossing point on Y axis. If looking at the first picture, it will not cross Y axis. AM I right? So mybe my idea is not working too.