PHP Imagick发光文字

PHP Imagick发光文字

$canvas = new Imagick();  
$canvas->newImage(500, 200, 'white');  
$canvas->setImageFormat('png');  
  
$text = new Imagick();  
$text->newImage(500, 200, 'none');  
$text->setImageFormat('png');  
  
$draw = new ImagickDraw();  
$draw->setFillColor(new ImagickPixel('#f00'));  
$draw->setFontSize(50);  
$draw->annotation(100, 60, 'welcome');  
$text->drawImage($draw);  
  
$draw->setFillColor(new ImagickPixel('#fff'));  
$draw->setFontSize(50);   
$draw->annotation(100, 120, 'welcome');  
$text->drawImage($draw);  
  
$shadow_layer = $text->clone();  
$shadow_layer->setImageBackgroundColor(new ImagickPixel('#555'));  
$shadow_layer->shadowImage(80, 0.8, 0, 0);  
$shadow_layer->compositeImage($text, Imagick::COMPOSITE_OVER, 0, 0 );  
$canvas->compositeImage($shadow_layer, imagick::COMPOSITE_DEFAULT, 0, 0);  
   $canvas->writeImage ("test_0.jpg"); //直接写入test_0.jpg文件 
//header("Content-type: image/{$canvas->getImageFormat()}");  
//echo $canvas->getImageBlob();  

ps:
drawImage $text->drawImage($draw); 这个$draw是文字对象 $text可以是图片可以是空白画布
setImageBackgroundColor 设置阴影颜色
shadowImage 第一个参数是透明度0~255 第二个参数就是值越大就是扩散越大 第三和第四就是x和y的阴影位移
compositeImage 这个是合并图片
$shadow_layer->compositeImage($text, Imagick::COMPOSITE_OVER, 0, 0 ); //$text合并到$shadow_layer
$canvas->compositeImage($shadow_layer, imagick::COMPOSITE_DEFAULT, 0, 0); //$shadow_layer 合并到$canvas

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