1. Re: Color differences
- Posted by Tone Škoda <tskoda at email.si>
Oct 01, 2004
-
Last edited Oct 02, 2004
Pete Lomax wrote:
>
> >did i translate this funciton correct:
>
> I don't think so. Try this (all versions completely untested).
>
> function geth(atom a, atom b)
> if a=0 then
> if b=0 then return 0
> elsif b>0 then return 90 end if
> return 270 -- b<0
> elsif b=0 then
> if a<0 then return 180 end if
> return 0 -- a>0
> end if
> if a<0 then return 180+(arctan(b/a)*180/PI)
> elsif a>0 and b>0 then return arctan(b/a)*180/PI end if
> return 360+(arctan(b/a)*180/PI)
> end function
>
this works. i found out now that none of those colof difference functions are
accurate enough.
