(PECL imagick 2, PECL imagick 3)
Imagick::adaptiveResizeImage — Adaptively resize image with data dependent triangulation
$columns,$rows,$bestfit = false,$legacy = falseAdaptively resize image with data-dependent triangulation. Avoids blurring across sharp color changes. Most useful when used to shrink images slightly to a slightly smaller "web size"; may not look good when a full-sized image is adaptively resized to a thumbnail. 此方法在Imagick基于ImageMagick 6.2.9以上版本編譯時(shí)可用。
注意: 參數
bestfit的特性在 Imagick 3.0.0 中已改變。在此版本以前，當目標尺寸設為 400x400 時(shí)，原尺寸為 200x150 的圖像將不會(huì )被改變。自 Imagick 3.0.0 起，源圖像將會(huì )被放大到 400x300 因為這將更好的適合目標尺寸。當使用參數bestfit時(shí)，必須同時(shí)給出寬度和高度。
columnsThe number of columns in the scaled image.
rowsThe number of rows in the scaled image.
bestfitWhether to fit the image inside a bounding box.
成功時(shí)返回 true。
錯誤時(shí)拋出 ImagickException。
| 版本 | 說(shuō)明 |
|---|---|
| PECL imagick 2.1.0 | Added optional fit parameter. |
| PECL imagick 2.1.0 | This method now supports proportional scaling. Pass zero as either parameter for proportional scaling. |
示例 #1 Using Imagick::adaptiveResizeImage()
Resize an image to a standard size for the web. This method works best when resizing to a size only slightly smaller than the previous image size.
<?php
header('Content-type: image/jpeg');
$image = new Imagick('image.jpg');
$image->adaptiveResizeImage(1024,768);
echo $image;
?>