98 lines
3.1 KiB
PHP
98 lines
3.1 KiB
PHP
<?php
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/**
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* ClickHeat : crée sur disque et renvoie le logo PNG 80x15 / creates on disk and returns the PNG 80x15 logo
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*
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* @author Yvan Taviaud - Dugwood - www.dugwood.com
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* @since 31/10/2006
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*/
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define('CLICKHEAT_LOW_COLOR', 0);
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define('CLICKHEAT_HIGH_COLOR', 190);
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/* Image creation */
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$img = imagecreatetruecolor(80, 15);
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$white = imagecolorallocate($img, 255, 255, 255);
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$grey = imagecolorallocate($img, 120, 120, 120);
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$black = imagecolorallocate($img, 0, 0, 0);
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/* Colors creation : deep blue (rgB) => light blue (rGB) => green (rGb) => yellow (RGb) => red (Rgb), 20 colors between each of these */
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for ($i = 0; $i < 80; $i++)
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{
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/* Red */
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if ($i < 40)
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{
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$red = CLICKHEAT_LOW_COLOR;
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}
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elseif ($i < 60)
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{
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$red = CLICKHEAT_LOW_COLOR + (CLICKHEAT_HIGH_COLOR - CLICKHEAT_LOW_COLOR) * ($i - 40) / 20;
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}
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else
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{
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$red = CLICKHEAT_HIGH_COLOR;
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}
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/* Green */
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if ($i < 20)
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{
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$green = CLICKHEAT_LOW_COLOR + (CLICKHEAT_HIGH_COLOR - CLICKHEAT_LOW_COLOR) * $i / 20;
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}
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elseif ($i < 60)
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{
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$green = CLICKHEAT_HIGH_COLOR;
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}
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else
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{
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$green = CLICKHEAT_HIGH_COLOR - (CLICKHEAT_HIGH_COLOR - CLICKHEAT_LOW_COLOR) * ($i - 60) / 20;
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}
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/* Blue */
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if ($i < 20)
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{
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$blue = CLICKHEAT_HIGH_COLOR;
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}
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elseif ($i < 40)
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{
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$blue = CLICKHEAT_HIGH_COLOR - (CLICKHEAT_HIGH_COLOR - CLICKHEAT_LOW_COLOR) * ($i - 20) / 20;
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}
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else
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{
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$blue = CLICKHEAT_LOW_COLOR;
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}
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$colors[$i] = imagecolorallocate($img, ceil($red), ceil($green), ceil($blue));
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}
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/* Rainbow */
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for ($i = 0; $i < 80; $i += 2)
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{
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imageline($img, $i / 2, 0, $i / 2, 15, $colors[0]);
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imageline($img, $i / 2 + 40, 0, $i / 2 + 40, 15, $colors[$i]);
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}
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imagerectangle($img, 0, 0, 79, 14, $grey);
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$pixels = array(
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' ',
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' ############################################################################## ',
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' # # ',
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' # # ',
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' # # ',
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' # ## # # ## # # # # ### ## ### # ',
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' # # # # # # # # # # # # # # # # ',
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' # # # # # ## #### ## #### # # ',
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' # # # # # # # # # # # # # # # # ',
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' # ## ### # ## # # # # ### # # # # ',
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' # # ',
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' # # ',
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' # # ',
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' ############################################################################## ',
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' ');
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for ($x = 0; $x < 80; $x++)
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{
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for ($y = 0; $y < 15; $y++)
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{
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if ($pixels[$y][$x] === '#')
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{
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imagesetpixel($img, $x, $y, $white);
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}
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}
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}
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header('Content-Type: image/png');
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imagepng($img, './images/logo.png');
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imagepng($img);
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imagedestroy($img); |