Php/docs/imagickkernel.frombuiltin
ImagickKernel::fromBuiltIn
(PECL imagick >= 3.3.0)
ImagickKernel::fromBuiltIn — Description
Description
public static ImagickKernel::fromBuiltin
( int $kernelType
, string $kernelString
) : ImagickKernel
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()
<?phpfunction 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 $canvas;}function createFromBuiltin($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_DIAMOND, 2, false, false);?>
