(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，原尺寸為 200x150 的圖像將不會被改變。自 Imagick 3.0.0 起，源圖像將會被放大到 400x300 因為這將更好的適合目標(biāo)尺寸。當(dāng)使用參數(shù)bestfit時，必須同時給出寬度和高度。
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.
成功時返回 true。
錯誤時拋出 ImagickException。
| 版本 | 說明 |
|---|---|
| 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;
?>