hexagon attractor problem

hi there,

I was searching a interesting facade yesterday, and i tried to achieve the effect just like picture.

i have tried several way, but the result i made was a bit different with that picture.

here are my questions.

1. The difference in general attractor transition is that, i only want the points are moving toward x axis, so if i just have ONE curve to distinguish, which is'nt the problem to find points location are in the right of left side of curve, but if i have TWO or THREE curves need to be distinguished, that is totally confused to me!

2. The points near curve which moved too big, how can i make it more equal?

3. I hope all the points can stay in the square boundary.

If anyone can give me some hint, i would be very appreciate with that.

thanks a lot!!

Shaun