Re: Reversing an image

[Ben Farhner <benjamin at farhner dot com>]

Well I got it all sorted out by removing the progress bar and  
replacing it with chasingarrows. I wish I could use the  
RGBSurface.Transform(), but its not available in 5.2.4. Is it still  
possible to get 5.5?
Ben Farhner
CEO / Head Developer
farhnware
http://macware.byethost5.com


> Hi,
>
> Okay, I have a thread that reverses an image. Heres the code:
>
>    for i=0 to p.width-1
>      for j=0 to p.height-1
>        c=r1.pixel(i,j)
>        r2.pixel(i,j)=rgb(255-c.red,255-c.green,255-c.blue)
>        progress.prog.value=progress.prog.value+1
>      next
>      progress.prog.value=progress.prog.value+1
>    next
>
> The problem is, that takes over 8 seconds. Other programs, such as
> Seashore, do it instantly. I'm using RGBSurfaces, which is supposed
> to be faster, but is there a faster way? I'm on RB 5.2.4, Mac OS X
> 10.4.3. Thanks,
>
>
> Ben Farhner
> CEO / Head Developer
> farhnware
> http://macware.byethost5.com
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