ImageMagick ImagickKernel::fromMatrix
(PECL imagick >= 3.3.0)
ImagickKernel::fromMatrix — 설명
설명
public static ImagickKernel::fromMatrix(array $matrix
, array $origin
= ?): ImagickKernel
값의 2차원 행렬에서 커널을 만듭니다. 각 값은 부동 소수점(요소를 사용해야 하는 경우)이거나 요소를 건너뛰어야 하는 경우 'false'이어야 합니다. 두 차원 모두에서 크기가 홀수인 행렬의 경우 원점 픽셀은 기본적으로 커널의 중심이 됩니다. 다른 모든 커널 크기의 경우 원점 픽셀을 지정해야 합니다.
매개변수
matrix
- A matrix (i.e. 2d array) of values that define the kernel. Each element should be either a float value, or FALSE if that element shouldn't be used by the kernel.
origin
- Which element of the kernel should be used as the origin pixel. e.g. For a 3x3 matrix specifying the origin as [2, 2] would specify that the bottom right element should be the origin pixel.
반환 값
생성된 ImagickKernel.
Examples
예제 #1 ImagickKernel::fromMatrix()
<?php
function renderKernel(ImagickKernel $imagickKernel) {
$matrix = $imagickKernel->getMatrix();
$imageMargin = 20;
$tileSize = 20;
$tileSpace = 4;
$shadowSigma = 4;
$shadowDropX = 20;
$shadowDropY = 0;
$radius = ($tileSize / 2) * 0.9;
$rows = count($matrix);
$columns = count($matrix[0]);
$imagickDraw = new \ImagickDraw();
$imagickDraw->setFillColor('#afafaf');
$imagickDraw->setStrokeColor('none');
$imagickDraw->translate($imageMargin, $imageMargin);
$imagickDraw->push();
ksort($matrix);
foreach ($matrix as $row) {
ksort($row);
$imagickDraw->push();
foreach ($row as $cell) {
if ($cell !== false) {
$color = intval(255 * $cell);
$colorString = sprintf("rgb(%f, %f, %f)", $color, $color, $color);
$imagickDraw->setFillColor($colorString);
$imagickDraw->rectangle(0, 0, $tileSize, $tileSize);
}
$imagickDraw->translate(($tileSize + $tileSpace), 0);
}
$imagickDraw->pop();
$imagickDraw->translate(0, ($tileSize + $tileSpace));
}
$imagickDraw->pop();
$width = ($columns * $tileSize) + (($columns - 1) * $tileSpace);
$height = ($rows * $tileSize) + (($rows - 1) * $tileSpace);
$imagickDraw->push();
$imagickDraw->translate($width/2 , $height/2);
$imagickDraw->setFillColor('rgba(0, 0, 0, 0)');
$imagickDraw->setStrokeColor('white');
$imagickDraw->circle(0, 0, $radius - 1, 0);
$imagickDraw->setStrokeColor('black');
$imagickDraw->circle(0, 0, $radius, 0);
$imagickDraw->pop();
$canvasWidth = $width + (2 * $imageMargin);
$canvasHeight = $height + (2 * $imageMargin);
$kernel = new \Imagick();
$kernel->newPseudoImage(
$canvasWidth,
$canvasHeight,
'canvas:none'
);
$kernel->setImageFormat('png');
$kernel->drawImage($imagickDraw);
/* create drop shadow on it's own layer */
$canvas = $kernel->clone();
$canvas->setImageBackgroundColor(new \ImagickPixel('rgb(0, 0, 0)'));
$canvas->shadowImage(100, $shadowSigma, $shadowDropX, $shadowDropY);
$canvas->setImagePage($canvasWidth, $canvasHeight, -5, -5);
$canvas->cropImage($canvasWidth, $canvasHeight, 0, 0);
/* composite original text_layer onto shadow_layer */
$canvas->compositeImage($kernel, \Imagick::COMPOSITE_OVER, 0, 0);
$canvas->setImageFormat('png');
return $canvas;
}
function createFromMatrix() {
$matrix = [
[0.5, 0, 0.2],
[0, 1, 0],
[0.9, 0, false],
];
$kernel = \ImagickKernel::fromMatrix($matrix);
return $kernel;
}
function fromMatrix() {
$kernel = createFromMatrix();
$imagick = renderKernel($kernel);
header("Content-Type: image/png");
echo $imagick->getImageBlob();
}
?>