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|
--TEST--
Test Tutorial, fxAnalyzeImage
--SKIPIF--
<?php
$imageMagickRequiredVersion=0x675;
require_once(dirname(__FILE__) . '/skipif.inc');
?>
--FILE--
<?php
ini_set('memory_limit','512M');
// Analyzes a one pixel wide image to make it easy to see what the
// gradient is doing
function fxAnalyzeImage(\Imagick $imagick) {
$graphWidth = $imagick->getImageWidth();
$sampleHeight = 20;
$graphHeight = 128;
$border = 2;
$imageIterator = new \ImagickPixelIterator($imagick);
$reds = array();
foreach ($imageIterator as $pixels) { /* Loop trough pixel rows */
foreach ($pixels as $pixel) { /* Loop through the pixels in the row (columns) */
/** @var $pixel \ImagickPixel */
$color = $pixel->getColor();
$reds[] = $color['r'];
}
$imageIterator->syncIterator(); /* Sync the iterator, this is important to do on each iteration */
}
$draw = new \ImagickDraw();
$strokeColor = new \ImagickPixel('red');
$fillColor = new \ImagickPixel('none');
$draw->setStrokeColor($strokeColor);
$draw->setFillColor($fillColor);
$draw->setStrokeWidth(1);
$draw->setFontSize(72);
$draw->setStrokeAntiAlias(true);
$x = 0;
$points = array();
foreach ($reds as $red) {
$pos = $graphHeight - ($red * $graphHeight / 256);
$points[] = array('x' => $x, 'y' => $pos);
$x += 1;
}
$draw->polyline($points);
$plot = new \Imagick();
$plot->newImage($graphWidth, $graphHeight, 'white');
$plot->drawImage($draw);
$outputImage = new \Imagick();
$outputImage->newImage($graphWidth, $graphHeight + $sampleHeight, 'white');
$outputImage->compositeimage($plot, \Imagick::COMPOSITE_ATOP, 0, 0);
$imagick->resizeimage($imagick->getImageWidth(), $sampleHeight, \Imagick::FILTER_LANCZOS, 1);
$outputImage->compositeimage($imagick, \Imagick::COMPOSITE_ATOP, 0, $graphHeight);
$outputImage->borderimage('black', $border, $border);
$outputImage->setImageFormat("png");
$bytes = $outputImage;
if (strlen($bytes) <= 0) { echo "Failed to generate image.";}
}
$arguments = array(5, 1, 0.5);
$imagick = new \Imagick();
$imagick->newPseudoImage(200, 200, 'gradient:black-white');
$imagick->functionImage(\Imagick::FUNCTION_POLYNOMIAL, $arguments);
$imagick->setimageformat('png');
fxAnalyzeImage($imagick);
echo "Ok";
?>
--EXPECTF--
Ok
|
