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|
--TEST--
Test Imagick, Imagick::exportImagePixels
--SKIPIF--
<?php
$imageMagickRequiredVersion=0x687;
require_once(dirname(__FILE__) . '/skipif.inc');
?>
--FILE--
<?php
$imagick = new \Imagick();
$imagick->newPseudoImage(256, 256, "gradient:black-white");
$pixelTypes = array(
Imagick::PIXEL_CHAR => function($v) { return $v / 255; } ,
Imagick::PIXEL_DOUBLE => function($v) { return $v; } ,
Imagick::PIXEL_FLOAT => function($v) { return $v; } ,
Imagick::PIXEL_LONG => function($v) { return $v / 4294967295; },
Imagick::PIXEL_QUANTUM => function($v) { return $v / Imagick::getQuantum(); } ,
Imagick::PIXEL_SHORT => function($v) { return $v / 65535; } ,
// This is not supported as ints close to 64bits are weird in PHP
// Imagick::PIXEL_LONGLONG => function($v) { return $v / (2 << 64 -1 ); } ,
);
$v = Imagick::getVersion();
if ($v['versionNumber'] < 0x700) {
//This test will probably fail on 32bit platforms. If you see this please
//submit a PR that fixes the problem.
$pixelTypes[Imagick::PIXEL_INTEGER] = function($v) { return $v / 4294967295; };
}
foreach ($pixelTypes as $pixelType => $scaleFn) {
try {
$pixels = $imagick->exportImagePixels(0, 0, 1, 256, "R", $pixelType);
for ($i = 0; $i<10 ; $i++) {
$expectedValue = $i / 255;
$scaledActualValue = $scaleFn($pixels[$i]);
if (abs($expectedValue - $scaledActualValue) > 0.0001) {
echo "pixel type $pixelType has incorrect values. They should be 0/255, 1/255, 2/255... 255/255 or the scaled equivalent\n";
var_dump($pixels);
break;
}
}
}
catch (\Exception $e) {
echo "Exception caught for pixelType: $pixelType ";
echo $e->getMessage();
}
}
echo "Ok";
?>
--EXPECTF--
Ok
|
