[英]PHP Imagick: problem converting ImageMagick command-line code
我在 Windows 8.1 上使用 ImageMagick 7.0.8-66 Q16 x64 我的 PHP 在 XAMPP 上是 7.4.1。
我已經在 PHP 中使用 exec() 成功運行了以下命令:
convert _temp_.jpg
( +clone -background black -shadow 88x3+2+2 )
+swap -background none -layers merge
+repage -background #eeeeee -layers flatten
+repage -shave 3x3
( -size 100x100 xc:#eeeeee )
+swap -gravity northwest -geometry +5+5 -compose over -composite output.jpg
它需要一張圖像,調整它的大小以適應 100x100 的縮略圖,並在中性的#eeeeee 背景畫布上為圖像添加陰影。 有用。
我想重寫它以使用 Imagick PHP 擴展,但我在翻譯它時遇到了麻煩。 這是我翻譯它的方式(帶注釋),這是行不通的:
// convert _temp_.jpg
$im = new imagick();
$im->readImage('_temp_.jpg');
// ( +clone -background black -shadow 88x3+2+2 )
$im_clone = clone $im;
$im_clone->setImageBackgroundColor('black');
$im_clone->shadowImage(88, 3, 2, 2);
// +swap -background none -layers merge
$im->setImageBackgroundColor('none');
$im->addImage($im_clone);
$im->mergeImageLayers(imagick::LAYERMETHOD_MERGE);
// +repage -background #eeeeee -layers flatten
$im->cropImage(88, 88, +5, +5);
$im->setImagePage(88, 88, 0, 0);
$im->setImageBackgroundColor('#eeeeee');
$im->mergeImageLayers(imagick::LAYERMETHOD_FLATTEN);
// +repage -shave 3x3
$im->cropImage(88, 88, +5, +5);
$im->setImagePage(88, 88, 0, 0);
$im->shaveImage(3, 3);
// ( -size 100x100 xc:#eeeeee )
$im_pseudo = new Imagick();
$im_pseudo->newPseudoImage(100, 100, 'xc:#eeeeee');
// +swap -gravity northwest -geometry +5+5 -compose over -composite output.jpg
$im->setImageGravity(imagick::GRAVITY_NORTHWEST);
$im->compositeImage($im_pseudo, Imagick::COMPOSITE_OVER, 5, 5);
$im->writeImage('output.jpg');
我錯過了什么?
正如我所說,如果您按步驟進行操作,您可以看到正在發生的事情。 這是來自 php Imagick 手冊並創建了陰影:
/* Read the image into the object */
$im = new Imagick( 'DOqeZ.jpg' );
$im->setImageFormat("png");
/* Make the image a little smaller, maintain aspect ratio */
$im->thumbnailImage( 200, null );
/* Clone the current object */
$shadow = $im->clone();
/* Set image background color to black
(this is the color of the shadow) */
$shadow->setImageBackgroundColor( new ImagickPixel( 'black' ) );
/* Create the shadow */
$shadow->shadowImage( 80, 3, 5, 5 );
/* Imagick::shadowImage only creates the shadow.
That is why the original image is composited over it */
$shadow->compositeImage( $im, Imagick::COMPOSITE_OVER, 0, 0 );
/* Display the image */
$shadow->writeImage('shadow.png');
更新:我想我會讓你看看你是否可以做剩下的
創建背景和合成它應該可以工作,但程度應該更好。 我還有其他事情要做,但下面有一些更新的代碼供您使用:
/* Read the image into the object */
$im = new Imagick( 'DOqeZ.jpg' );
$im->setImageFormat("png");
/* Make the image a little smaller, maintain aspect ratio */
$im->thumbnailImage( 80, null );
/* Clone the current object */
$shadow = $im->clone();
/* Set image background color to black
(this is the color of the shadow) */
$shadow->setImageBackgroundColor( new ImagickPixel( 'black' ) );
/* Create the shadow */
$shadow->shadowImage( 80, 3, 5, 5 );
/* Imagick::shadowImage only creates the shadow.
That is why the original image is composited over it */
$shadow->compositeImage( $im, Imagick::COMPOSITE_OVER, 0, 0 );
/* Create the background image 100x100 with a background colour */
/* Gravity seems to have no effect */
/* $shadow->setImageGravity(imagick::GRAVITY_CENTER);*/
$shadow->setImageBackgroundColor( '#eeeeee' );
$height = $shadow->getImageHeight();
$width = $shadow->getImageWidth();
$shadow->extentImage( 100, 100, (((100 - $width)/2)*-1 ), (((100 - $height)/2)*-1 ));
$shadow->writeImage('shadow.jpg');
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