Re: get and set pixel

[Christoffer Enedahl]

I am using this code similar to this :
repeat with xx = 1 to 450
        repeat with yy = 1 to 400
                rgbval = member("firstImg").image.getPixel(xx, yy)
                -- some calculations here and then
                member("secondImg").image.setPixel(xx,yy, newrgbval)
        end repeat
end repeat
This is all working fine, except how slow it is.

It helps to cache slow stuff. like getting a member is slow.
And getPixel and setPixel is slow aswell.
for normal image copy stuff, check copyPixels in the manual, and some inks 
can be useful.
if you need to work down at pixellevel I would recode the loop something 
like this:

vImg1 = member("firstImg").image
vImg2 = member("secondImg").image
repeat with xx = 1 to 450
        repeat with yy = 1 to 400
                rgbval = vImg1.getPixel(xx,yy)
                -- some calculations here and then
                vImg2.setPixel(xx,yy, rgbval)
        end repeat
end repeat
HTH/Christoffer 

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