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PHP Manual :: ImagickKernel::fromBuiltIn



ImagickKernel::addUnityKernel || ImagickKernel::fromMatrix || ImagickKernel || PHP Manual

(PECL imagick >= 3.3.0)

ImagickKernel::fromBuiltInDescription

Description

public static ImagickKernel ImagickKernel::fromBuiltin ( string $kernelType , string $kernelString )

Create a kernel from a builtin in kernel. See http://www.imagemagick.org/Usage/morphology/#kernel for examples. Currently the 'rotation' symbols are not supported. Example: $diamondKernel = ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DIAMOND, "2");

Parameters

kerneltype

The type of kernel to build e.g. \Imagick::KERNEL_DIAMOND

kernelString

A string that describes the parameters e.g. "4,2.5"

Return Values

Examples

Example #1 ImagickKernel::fromBuiltin()

<?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);
                
$imagickDraw->rectangle(00$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/$height/2);
    
$imagickDraw->setFillColor('rgba(0, 0, 0, 0)');
    
$imagickDraw->setStrokeColor('white');
    
$imagickDraw->circle(00$radius 10);
    
$imagickDraw->setStrokeColor('black');
    
$imagickDraw->circle(00$radius0);
    
$imagickDraw->pop();

    
$canvasWidth $width + ($imageMargin); 
    
$canvasHeight $height + ($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$canvasHeight00);
    
    
/* composite original text_layer onto shadow_layer */
    
$canvas->compositeImage($kernel, \Imagick::COMPOSITE_OVER00);
    
$canvas->setImageFormat('png');

    return 
$canvas;
}


function 
createFromBuiltin($kernelType$kernelFirstTerm$kernelSecondTerm$kernelThirdTerm) {
    
$string '';

    if (
$kernelFirstTerm != false && strlen(trim($kernelFirstTerm)) != 0) {
        
$string .= $kernelFirstTerm;

        if (
$kernelSecondTerm != false && strlen(trim($kernelSecondTerm)) != 0) {
            
$string .= ','.$kernelSecondTerm;
            if (
$kernelThirdTerm != false && strlen(trim($kernelThirdTerm)) != 0) {
                
$string .= ','.$kernelThirdTerm;
            }
        }
    }

    
$kernel ImagickKernel::fromBuiltIn(
        
$kernelType,
        
$string
    
);

    return 
$kernel;
}
    
function 
fromBuiltin($kernelType$kernelFirstTerm$kernelSecondTerm$kernelThirdTerm) {
    
$diamondKernel createFromBuiltin($kernelType$kernelFirstTerm$kernelSecondTerm$kernelThirdTerm);
    
$imagick renderKernel($diamondKernel);

    
header("Content-Type: image/png");
    echo 
$imagick->getImageBlob();
}

fromBuiltin(\Imagick::KERNEL_DIAMOND2falsefalse);


?>



ImagickKernel::addUnityKernel || ImagickKernel::fromMatrix || ImagickKernel || PHP Manual
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