gistfile1.aw

<?php

class Some_Class_To_Parse_Colors_From_Images
{
	function logo()
	{
		$src = 'public/dummy/logo2.png';
		$im = imagecreatefrompng(ROOT . $src);
		$w0 = imagesx($im);
		$h0 = imagesy($im);
		
		for ($y=0; $y < $h0; $y++)
		{
			for ($x=0; $x < $w0; $x++)
			{
				$rgb_index = imagecolorat($im, $x, $y);
				$rgb = imagecolorsforindex($im, $rgb_index);
				$hsv = $this->rgb2hsv($rgb);
				$hue_index = $hsv[0];
				#$hue_index = round( ( $rgb['red']*256*256 + $rgb['green']*256 + $rgb['blue'] ) / 65536 );
				$palette[ $hue_index ][ $rgb_index ] += $hsv[1] * $hsv[2];
				$hues[ $hue_index ] += $hsv[1] * $hsv[2];
			}
		}
		
		foreach ($palette as $hue => $palette1)
		{
			$sort[$hue] = count($palette1) * array_sum($palette1);
			arsort($palette[$hue]);
		}
		arsort($sort);
		#ksort($sort);
		
		foreach ($sort as $hue => $total_density)
		{
			$palette1 = $palette[$hue];
			/*
			foreach ($palette1 as $rgb_index => $density)
			{
				$rgb = imagecolorsforindex($im, $rgb_index);
				echo '<div class="box" style="background:rgb(' . $rgb['red'] . ',' . $rgb['green'] . ',' . $rgb['blue'] . ')">'
				 . number_format($total_density) . '<br>'
				 . sprintf('#%02s%02s%02s', base_convert($rgb['red'], 10, 16), base_convert($rgb['green'], 10, 16), base_convert($rgb['blue'], 10, 16)) . '<br>'
				 . '</div>';
				break;
			}
			*/
		}
		#echo '<div class="clear"></div>';
		
		$hues_max = max($hues);
		$hues_avg = round( array_sum($hues) / count($hues) );
		$hues_median = $this->median($hues);
		dump(number_format($hues_median));
		dump(number_format($hues_avg));
		
		$hues1 = $hues;
		foreach ($hues1 as $i => $hue) if ($hues[$i]<$hues_median) unset($hues1[$i]);
		arsort($hues1);
		$hues1 = array_slice($hues1, 0, 90, true);
		ksort($hues1);
		#$hues = $hues1;
		$hues1_keys = array_keys($hues1);
		$hues1 = array_values($hues1);
		$hues1_count = count($hues1);
		
		for ($i=0; $i < $hues1_count; $i++) /*if ($hues[$i]>$hues_median)*/
		{
			$j = $hues1_keys[$i];
			if ($palette[$j])
			{
				$rgb_index = key($palette[$j]);
				$rgb = imagecolorsforindex($im, $rgb_index);
				$hsv = $this->rgb2hsv($rgb);
			}
			else
			{
				$rgb = array();
			}
			if ($hsv[2]>10
				and $hues1[$i]>$hues1[$i-1] and $hues1[$i]>$hues1[$i+1]
				and $hues1[$i]>$hues1[$i-2] and $hues1[$i]>$hues1[$i+2]
				and $hues1[$i]>$hues1[$i-3] and $hues1[$i]>$hues1[$i+3]
				and $hues1[$i]>$hues1[$i-4] and $hues1[$i]>$hues1[$i+4]
				and $hues1[$i]>$hues1[$i-5] and $hues1[$i]>$hues1[$i+5]
				and $hues1[$i]>$hues1[$i-6] and $hues1[$i]>$hues1[$i+6]
				and $hues1[$i]>$hues1[$i-7] and $hues1[$i]>$hues1[$i+7]
				/*and $hues1[$i]>$hues1[$i-8] and $hues1[$i]>$hues1[$i+8]
				and $hues1[$i]>$hues1[$i-9] and $hues1[$i]>$hues1[$i+9]*/)
			{
				echo '<div class="box" style="' . ($hues1[$i]<$hues_avg ? 'margin-top:15px;' : '') . 'background:rgb(' . (int)$rgb['red'] . ',' . (int)$rgb['green'] . ',' . (int)$rgb['blue'] . ')">'
				 . number_format($i) . '/' . $hsv[1] . '/' . $hsv[2] . '<br>'
				 . sprintf('#%02s%02s%02s', base_convert($rgb['red'], 10, 16), base_convert($rgb['green'], 10, 16), base_convert($rgb['blue'], 10, 16))
				 . '</div>';
			}
		}
		echo '<div class="clear"></div>';
		
		echo '<img src="/' . $src . '">';
		echo '<div class="clear"></div>';
	
		echo '<div class="margin" style="margin-top:' . round($hues_avg/$hues_max*100*3) . 'px"></div>';
		for ($i=0; $i < 360; $i++)
		{
			if ($palette[$i])
			{
				$rgb_index = key($palette[$i]);
				$rgb = imagecolorsforindex($im, $rgb_index);
			}
			else
			{
				$rgb = array();
			}
			echo '<div class="line" style="height:' . round($hues[$i]/$hues_max*100*3+1) . 'px;background:rgb(' . (int)$rgb['red'] . ',' . (int)$rgb['green'] . ',' . (int)$rgb['blue'] . ')"></div>';
		}
		echo '<div class="clear"></div>';
		
		echo <<<EOF
<style type="text/css" media="screen">
.margin {
	position:absolute;
	height:1px;
	width:1440px;
	background:rgba(255, 0, 0, .35);
}
.line {
	width:3px;
	background:#000;
	margin-right:1px;
	float:left
}
.box {
	width:59px;
	height:43px;
	padding-top:16px;
	margin:0 1px 1px 0;
	text-align:center;
	font:10px/13px tahoma;
	color:#000;
	float:left;
}
.clear {
	clear:both;
	height:9px;
}
</style>
EOF;

		return false;
	}
	
	function rgb2hsv($rgb)
	{
		$r = $rgb['red'];
		$g = $rgb['green'];
		$b = $rgb['blue'];

		$minVal = min($r, $g, $b);
		$maxVal = max($r, $g, $b);
		$delta  = $maxVal - $minVal;

		$v = $maxVal / 255;

		if ($delta == 0)
		{
			$h = 0;
			$s = 0;
		} else {
			$s = $delta / $maxVal;
			$del_R = ((($maxVal - $r) / 6) + ($delta / 2)) / $delta;
			$del_G = ((($maxVal - $g) / 6) + ($delta / 2)) / $delta;
			$del_B = ((($maxVal - $b) / 6) + ($delta / 2)) / $delta;

			if ($r == $maxVal)
			{
				$h = $del_B - $del_G;
			}
			else if ($g == $maxVal)
			{
				$h = (1 / 3) + $del_R - $del_B;
			}
			else if ($b == $maxVal)
			{
				$h = (2 / 3) + $del_G - $del_R;
			}

			if ($h < 0)
			{
				$h++;
			}
			if ($h > 1)
			{
				$h--;
			}
		}
		
		$h = round($h * 360);
		$s = round($s * 100);
		$v = round($v * 100);

		return array($h, $s, $v);
	}

	function median()
	{
		$args = func_get_args();

		switch(func_num_args())
		{
			case 0:
				trigger_error('median() requires at least one parameter',E_USER_WARNING);
				return false;
				break;

			case 1:
				$args = array_pop($args);
				// fallthrough

			default:
				if(!is_array($args))
				{
					trigger_error('median() requires a list of numbers to operate on or an array of numbers',E_USER_NOTICE);
					return false;
				}

				sort($args);

				$n = count($args);
				$h = intval($n / 2);

				if($n % 2 == 0)
				{
					$median = ($args[$h] + $args[$h-1]) / 2;
				}
				else
				{
					$median = $args[$h];
				}

				break;
		}

		return $median;
	}
}