J. Landman Gay
jacque at hyperactivesw.com
Fri Jun 26 15:23:46 CDT 2009
Bert Shuler wrote:
> I have written this code a few different ways. Each seems to be equally
> inefficient. I am attempting to compare to images, pixel by pixel, and
> record the differences.
> ON mouseUp pMouseBtnNo
> put 0 into c
> set the startvalue of scrollbar Progress to 0
> set the endvalue of scrollbar Progress to the length of imagedata of
> image "Alpha"
> put the imagedata of image "Alpha" into idataalpha
> put the imagedata of image "Beta" into idatabeta
> REPEAT FOR each char myChar in idataalpha
> set the thumbposition of scrollbar Progress to c
> IF myChar is not char (c) of idatabeta THEN
> put c && char (c) of idatabeta & return after hAll
> END IF
> put c+1 into c
> END repeat
> put hAll into field "diff"
> END mouseUp
> It takes many minutes to process a 200x200 image. I want this code to
> eventually compare full screen-captures, so if there is any way to speed
> it up, I am open for advice.
Take out the progress bar and then see how it does. Setting a progress
indicator on every repeat often takes longer than running the entire
rest of the handler.
If you do need a progress bar, only update it occasionally; for example,
every few hundred iterations:
if c mod 500 = 0 then set the thumbpos of sb "progress" to c
Jacqueline Landman Gay | jacque at hyperactivesw.com
HyperActive Software | http://www.hyperactivesw.com
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