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Re: Help with PHP BD imaging functionality [message #182500 is a reply to message #182489]

Thu, 08 August 2013 23:13

Christoph Michael Bec
Messages: 207
Registered: June 2013

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Senior Member

The Natural Philosopher wrote:

> What that means is that if you e.g. want to apply any given arbitrary
> color value to an image, you need 2GB table color values!!!

AFAIK that's not necessarily true. If the image is created by
imagecreatetruecolor() (or, assumably, if it is created from a
file/string which contains a true color image, opposed to a palletized
image) the "index" to the color table is actually the RGB value:

>>> $im = imagecreatetruecolor(100, 100)
>>> $c = imagecolorallocate($im, 128, 128, 128)
>>> dechex($c)
'808080'

This suggests the assumption that GD doesn't build a palette in this case.

--
Christoph M. Becker

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[Message index]

		Help with PHP BD imaging functionality By: Ed Jay on Wed, 07 August 2013 23:53
		Re: Help with PHP BD imaging functionality By: The Natural Philosoph on Thu, 08 August 2013 07:58
		Re: Help with PHP BD imaging functionality By: Ed Jay on Thu, 08 August 2013 12:01
		Re: Help with PHP BD imaging functionality By: The Natural Philosoph on Thu, 08 August 2013 13:12
		Re: Help with PHP BD imaging functionality By: Christoph Michael Bec on Thu, 08 August 2013 23:13
		Re: Help with PHP BD imaging functionality By: Jerry Stuckle on Thu, 08 August 2013 12:55

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