Hi. My brain can't take no more of math and ifs and logical conditions. So my answer will be simple.
I have a normalized Gem_mouse windows which counts from 0 to 1, x coordinates (from Left to right). So, want i wanna do is to use the value of 0,314 (offcenter to the left) as a center. The x coordinates will modulate (or change) the value of an FM modulation, so 0 = no Osc and at 0,314 = 1 (or some value which i will later choose to my musical taste.
The problem is that the right margin of the window (x=1) has to be =0 too!
In coord it will be like this:
0-------0.314----------------------------1
but affecting the FM values 'll be like this
0---------1-------------------------------0 (with all the corresponding values between 0 and 1)
I hope you understand my argentinian English!!