Re: bug in getPixel()?

Tue, 05 Nov 2002 09:02:48 -0800 



i've these result

instead of rgb(255, 000, 000) getPixel return rgb(248, 000, 000)
   "       rgb(000, 255, 000)    "        "   rgb(000, 248, 000)
   "       rgb(000, 000, 255)    "        "   rgb(000, 000, 248)

and so on for every pure colors likes rgb(255, 255, 000) even rgb (255, 255,
255) --> white is return as rgb(248, 248, 248)




With these results, your monitor is probably set to 16-bit depth. Set to 
32-bit you will get 'expected' results.



See James Newton's book for an excellent explanation. Quote: "In 16-bit 
color, the highest value for each primary color is 31. The value of 248 
comes from 31 x 8. For 16-bit colors, rgb(248, 248, 248) means white."



-Sean.



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