(PECL imagick 2, PECL imagick 3)
Imagick::adaptiveResizeImage — Adaptively resize image with data dependent triangulation
$columns
,$rows
,$bestfit
= false
,$legacy
= false
Adaptively 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(shù)
bestfit
的特性在 Imagick 3.0.0 中已改變。在此版本以前,當(dāng)目標(biāo)尺寸設(shè)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?yàn)檫@將更好的適合目標(biāo)尺寸。當(dāng)使用參數(shù)bestfit
時(shí),必須同時(shí)給出寬度和高度。
columns
The number of columns in the scaled image.
rows
The number of rows in the scaled image.
bestfit
Whether to fit the image inside a bounding box.
成功時(shí)返回 true
。
錯(cuò)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;
?>