need 'inverse ratio'/to scale formula

[dave matthews]

fellow flaers and flashets,

  can anyone point out a tutorial or formula which:

  gets _xscale

  and computes a variable which

  becomes smaller as the scale gets larger...


  this new variable will then be used as a 'pan incriment' so the enlarged

clip may be panned from side to side via a button action which moves the

targeted clip that new number of pixcels (or a % of the scale) left and

right.

  this 'inverse ratio'/to scale is necessary because we are scaling the clip

to very large and small sizes, resulting in a very slow pan when it's small

and a 'to rapid' pan when the clip is very large.


  a curved 'variable would be really sweet...


thanks,

dave matthews