Imagick::distortImage

    (PECL imagick 2 >= 2.0.1, PECL imagick 3)

    Imagick::distortImage — Distorts an image using various distortion methods

    说明

    publicImagick::distortImage(int$method, array$arguments, bool$bestfit): bool

    Distorts an image using various distortion methods, by mapping color lookups of the source image to a new destination image usually of the same size as the source image, unless 'bestfit' is set to true.

    If 'bestfit' is enabled, and distortion allows it, the destination image is adjusted to ensure the whole source 'image' will just fit within the final destination image, which will be sized and offset accordingly. Also in many cases the virtual offset of the source image will be taken into account in the mapping.

    此方法在Imagick基于ImageMagick 6.3.6以上版本编译时可用。

    参数

    method

    The method of image distortion. See distortion constants

    arguments

    The arguments for this distortion method

    bestfit

    Attempt to resize destination to fit distorted source

    返回值

    成功时返回 true。

    错误／异常

    错误时抛出 ImagickException。

    示例

    示例 #1 Using Imagick::distortImage():

    Distort an image and display to the browser.

    <?php

    $im = new Imagick();


    $im->newPseudoImage(100, 100, "pattern:checkerboard");


    $im->setImageFormat('png');


    $im->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);


    $im->setImageMatte(true);


    $controlPoints = array( 10, 10,
    10, 5,

    10, $im->getImageHeight() - 20,
    10, $im->getImageHeight() - 5,

    $im->getImageWidth() - 10, 10,
    $im->getImageWidth() - 10, 20,

    $im->getImageWidth() - 10, $im->getImageHeight() - 10,
    $im->getImageWidth() - 10, $im->getImageHeight() - 30);


    $im->distortImage(Imagick::DISTORTION_PERSPECTIVE, $controlPoints, true);


    header("Content-Type: image/png");
    echo     $im;
    ?>

    以上示例的输出类似于：

    Output of example : Using Imagick::distortImage()

    参见

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