Second set of eyes needed.

[Michael Doub]

getitback needs to be passed W not L (width not the length) but the problem still exists.

On 2012-01-09, at 4:33 PM, Michael Doub wrote:

> I have been trying to figure out why I have not been able to retrieve valid RGB values from an image.  
> I decided to generate my own image so I would be able to track down my issue.   I thought that would
> be straight forward,   Several hrs later and i am still at an impasse.   I am trying to understand why I
> the pixel data, that was just written seems to be corrupted.  This occurs on the first pixel of the second row 
> of pixels.   
> 
> Could someone take a look and point out where I am going wrong?  Interestingly enough, if you comment
> out the check with the breakpoint you will get to see the image that seems to look just fine.
> 
> Thanks
>   Mike
> 
> 
> 
> local tData
> 
> on mouseUp
>  BuildImage
> end mouseUp
> 
> On BuildImage
>   put empty into tData
>   put 320 into W
>   put 426 into L
>   create image
>   put it into tID
>   set the width of tID to W
>   set the height of tID to L
>   put 1 into R
>   put 1 into G
>   put 0 into B
>   repeat with y = 1 to L
>      repeat with x =1 to W
>         put binaryEncode("CCCC",0,R,G,B) into Pixel
>         put Pixel after tData
>         get getitback (L, x, y)
>         if  it <> Pixel then
>            breakpoint
>         end if
>         add 1 to R
>         if R = 256 then put 1 into R
>      end repeat
>      Add 1 to G
>      put 1 into R
>      if G = 256 then put 1 into G
>   end repeat
>   set the imageData of tID to tData
> end BuildImage
> 
> function getitback W, xx, yy
>   put ((yy - 1) * W ) + ((xx - 1) * 4) into myindex
>   put charToNum(char myindex + 2 of tData) into RR 
>   put charToNum(char myindex + 3 of tData) into GG 
>   put charToNum(char myindex + 4 of tData) into BB  
>   put binaryEncode("CCCC",0,RR,GG,BB) into it
>   return it
> end getitback
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