public function render()
{
//Example ImagickPixel::isSimilar
// The tests below are written with the maximum distance expressed as 255
// so we need to scale them by the square root of 3 - the diagonal length
// of a unit cube.
$root3 = 1.732050807568877;
$tests = array(['rgb(245, 0, 0)', 'rgb(255, 0, 0)', 9 / $root3, false], ['rgb(245, 0, 0)', 'rgb(255, 0, 0)', 10 / $root3, true], ['rgb(0, 0, 0)', 'rgb(7, 7, 0)', 9 / $root3, false], ['rgb(0, 0, 0)', 'rgb(7, 7, 0)', 10 / $root3, true], ['rgba(0, 0, 0, 1)', 'rgba(7, 7, 0, 1)', 9 / $root3, false], ['rgba(0, 0, 0, 1)', 'rgba(7, 7, 0, 1)', 10 / $root3, true], ['rgb(128, 128, 128)', 'rgb(128, 128, 120)', 7 / $root3, false], ['rgb(128, 128, 128)', 'rgb(128, 128, 120)', 8 / $root3, true], ['rgb(0, 0, 0)', 'rgb(255, 255, 255)', 254.9, false], ['rgb(0, 0, 0)', 'rgb(255, 255, 255)', 255, true], ['rgb(255, 0, 0)', 'rgb(0, 255, 255)', 254.9, false], ['rgb(255, 0, 0)', 'rgb(0, 255, 255)', 255, true], ['black', 'rgba(0, 0, 0)', 0.0, true], ['black', 'rgba(10, 0, 0, 1.0)', 10.0 / $root3, true]);
$output = "<table width='100%' class='infoTable'><thead>\n <tr>\n <th>\n Color 1\n </th>\n <th>\n Color 2\n </th>\n <th>\n Test distance * 255\n </th>\n <th>\n Is within distance\n </th>\n </tr>\n </thead>";
$output .= "<tbody>";
foreach ($tests as $testInfo) {
$color1 = $testInfo[0];
$color2 = $testInfo[1];
$distance = $testInfo[2];
$expectation = $testInfo[3];
$testDistance = $distance / 255.0;
$color1Pixel = new \ImagickPixel($color1);
$color2Pixel = new \ImagickPixel($color2);
$isSimilar = $color1Pixel->isPixelSimilar($color2Pixel, $testDistance);
if ($isSimilar !== $expectation) {
echo "Test distance failed. Color [{$color1}] compared to color [{$color2}] is not within distance {$testDistance} FAILED." . NL;
}
$layout = "<tr>\n <td>%s</td>\n <td>%s</td>\n <td>%s</td>\n <td style='text-align: center;'>%s</td>\n </tr>";
$output .= sprintf($layout, $color1, $color2, $distance, $isSimilar ? 'yes' : 'no');
}
$output .= "</tbody></table>";
return $output;
//Example end
}
<?php
$root3 = 1.732050807568877;
$tests = array(array('rgb(245, 0, 0)', 'rgb(255, 0, 0)', 9 / $root3, false), array('rgb(245, 0, 0)', 'rgb(255, 0, 0)', 10 / $root3, true), array('rgb(0, 0, 0)', 'rgb(7, 7, 0)', 9 / $root3, false), array('rgb(0, 0, 0)', 'rgb(7, 7, 0)', 10 / $root3, true), array('rgba(0, 0, 0, 1)', 'rgba(7, 7, 0, 1)', 9 / $root3, false), array('rgba(0, 0, 0, 1)', 'rgba(7, 7, 0, 1)', 10 / $root3, true), array('rgb(128, 128, 128)', 'rgb(128, 128, 120)', 7 / $root3, false), array('rgb(128, 128, 128)', 'rgb(128, 128, 120)', 8 / $root3, true), array('rgb(0, 0, 0)', 'rgb(255, 255, 255)', 254.9, false), array('rgb(0, 0, 0)', 'rgb(255, 255, 255)', 255, true), array('rgb(255, 0, 0)', 'rgb(0, 255, 255)', 254.9, false), array('rgb(255, 0, 0)', 'rgb(0, 255, 255)', 255, true), array('black', 'rgba(0, 0, 0)', 0.0, true), array('black', 'rgba(10, 0, 0, 1.0)', 10.0 / $root3, true));
try {
foreach ($tests as $testInfo) {
$color1 = $testInfo[0];
$color2 = $testInfo[1];
$distance = $testInfo[2];
$expectation = $testInfo[3];
$testDistance = $distance / 255.0 + 1.0E-8;
$color1Pixel = new ImagickPixel($color1);
$color2Pixel = new ImagickPixel($color2);
$isSimilar = $color1Pixel->isPixelSimilar($color2Pixel, $testDistance);
if ($isSimilar !== $expectation) {
echo "isPixelSimilar failed. Color [{$color1}] compared to color [{$color2}]" . " is not within distance {$testDistance}." . PHP_EOL;
}
}
echo "success";
} catch (\Exception $e) {
echo "Exception caught in ImagickPixel::isPixelSimilar test: " . $e->getMessage() . PHP_EOL;
}
try {
$pixel = new ImagickPixel('the-best-color-in-the-world');
} catch (ImagickPixelException $ex) {
echo "__construct\n";
}
$pixel = new ImagickPixel('white');
try {
$pixel->setColor('the-worst-color-in-the-world');
} catch (ImagickPixelException $ex) {
echo "setColor\n";
}
define('IMAGICK_COLOR_INVALID', -1);
try {
$pixel->getColorValue(IMAGICK_COLOR_INVALID);
} catch (ImagickPixelException $ex) {
echo "getColorValue\n";
}
try {
$pixel->setColorValue(IMAGICK_COLOR_INVALID, 0);
} catch (ImagickPixelException $ex) {
echo "setColorValue\n";
}
try {
$pixel->isPixelSimilar(new ImagickPixelException(), 0);
} catch (ImagickPixelException $ex) {
echo "isPixelSimilar\n";
}
?>
==DONE==
<?php
$sqrt3 = sqrt(3);
$pixel = new ImagickPixel('red');
var_dump($pixel->isPixelSimilar($pixel, 0));
var_dump($pixel->isPixelSimilar('red', 0));
var_dump($pixel->isPixelSimilar('#FF0000', 0));
var_dump($pixel->isPixelSimilar('rgb(255, 0, 0)', 0));
var_dump($pixel->isPixelSimilar('green', 0.01));
var_dump($pixel->isPixelSimilar('#0000FF', 0.02));
var_dump($pixel->isPixelSimilar('rgb(0, 0, 0)', 0.03));
$pixel = new ImagickPixel('#F02B88');
var_dump($pixel->isPixelSimilar('#F02B89', 0.9 / $sqrt3 / 255));
var_dump($pixel->isPixelSimilar('#F02B89', 1.1 / $sqrt3 / 255));
var_dump($pixel->isPixelSimilar('#F12A86', 0.9 / 255));
var_dump($pixel->isPixelSimilar('#F12A88', 1.1 / 255));
?>
==DONE==
