[javascript-dev] Re: Re: screentoworld misunderstanding

Hallo.
I'm bothering you again...
Now I'm stucked on the fine tuning (with shift key).
It's (nearly!!) working, but if I press shift while dragging, I loose my value and the slider is fine tuning but re-starting from zero-left.
Thanx for your hints.
Here is the code:

---------------------------------------------
function ondrag(x,y,...)
...
var f,a,v,dx;
a = sketch.screentoworld(x,y);
v = (a[0]+aspect)/aspect*0.5;
dx = v - last_x*0.2; //(last_x is initiated with 0)

if (shift)
{
f = v - dx;
} else {
f = v; 
}
msg_float(f);
last_x = v; 
}
---------------------------------------------