note 82729 added to function.imagecolorset

Here is a function to colorize a picture gradient style. All you have to do is to pass an img-object and an array of colors. e.g. $arr = array('#000000', '#990000', '#00FFFF', '#FFFFDD'); colorize ($img, $arr); <?php function colorize($imgdata, $palette) { imageTrueColorToPalette($imgdata,false,0xFF); $l = count($palette)-1; $i = imagecolorstotal($imgdata); while ($i--) { list($r,$g,$b) = array_values(imageColorsForIndex($imgdata,$i)); $grayscale = ($r*.3 + $g*.59 +$b*.11) / 0xFF; $pos = $l*$grayscale; $perc = $pos-floor($pos); $tbase = str_replace("#", '', $palette[$pos]); $baseR = hexdec(substr($tbase,0,2)); $baseG = hexdec(substr($tbase,2,2)); $baseB = hexdec(substr($tbase,4,2)); $tmix = str_replace("#", '', $palette[$pos+1]); $mixR = hexdec(substr($tmix,0,2)); $mixG = hexdec(substr($tmix,2,2)); $mixB = hexdec(substr($tmix,4,2)); $resR = $baseR+($mixR-$baseR)*$perc; $resG = $baseG+($mixG-$baseG)*$perc; $resB = $baseB+($mixB-$baseB)*$perc; imagecolorset($imgdata, $i, $resR, $resG, $resB); } } ?> ---- Server IP: 217.13.201.10 Probable Submitter: 84.60.10.123 ---- Manual Page -- http://www.php.net/manual/en/function.imagecolorset.php Edit -- https://master.php.net/note/edit/82729 Del: integrated -- https://master.php.net/note/delete/82729/integrated Del: useless -- https://master.php.net/note/delete/82729/useless Del: bad code -- https://master.php.net/note/delete/82729/bad+code Del: spam -- https://master.php.net/note/delete/82729/spam Del: non-english -- https://master.php.net/note/delete/82729/non-english Del: in docs -- https://master.php.net/note/delete/82729/in+docs Del: other reasons-- https://master.php.net/note/delete/82729 Reject -- https://master.php.net/note/reject/82729 Search -- https://master.php.net/manage/user-notes.php