Kevin Loney wrote:
>
> I'm getting strange black bands
> everywhere. any thoughts as to why?
>
> void Expose_Color (COLOUR Color, DBL Time)
> {
>  register DBL gray, expgray;
>  gray = GREY_SCALE(Color);
>  if(gray)
>  {
>   expgray = 1-exp(-Time*gray);
>   Color[pRED] = (expgray/gray) * Color[pRED];
>   Color[pGREEN] = (expgray/gray) * Color[pGREEN];
>   Color[pBLUE] = (expgray/gray) * Color[pBLUE];
>  }
> }

The color channels are separate so try this:

Color[pRED] =   1-exp(-Time*Color[pRED]);
Color[pGREEN] = 1-exp(-Time*Color[pGREEN]);
Color[pBLUE] =  1-exp(-Time*Color[pBLUE]);



_____________
Kari Kivisalo

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