Imagick::clipPathImage

(PECL imagick 2.0.0)

Imagick::clipPathImage — Clips along the named paths from the 8BIM profile

说明

bool Imagick::clipPathImage ( string $pathname , bool $inside )

Clips along the named paths from the 8BIM profile, if present. Later operations take effect inside the path. It may be a number if preceded with #, to work on a numbered path, e.g., "#1" to use the first path.

参数

pathname: The name of the path
inside: If TRUE later operations take effect inside clipping path. Otherwise later operations take effect outside clipping path.

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

User Contributed Notes

Coleman Nitroy 14-Mar-2008 02:15


I found Imagick::clipPathImage and Imagic::clipImage did not work as I had expected. I thought they would just clip the path and throw away the extra data and you are done. Not the case. 



Here is how I was able to use a clipping path:



<?php

      $img = new Imagick("/Path/To/Test/Image.psd");

      $geometry = $img->getImageGeometry();



      // Uses the first path as the clipping path

      $img->clipPathImage("#1", false);



      // Fill the clipped part with a color

      $draw = new ImagickDraw();

      $draw->setFillColor("#000000");

      $draw->color(0,0, imagick::PAINT_RESET);

      $img->drawImage($draw);



      // Composite the clipped image with the old image. Set the color of the composite to any color you want to be the outside part.

      $composite = new Imagick($path);

      $composite->newImage( $geometry['width'], $geometry['height'], new ImagickPixel("white"), 'png');

      $composite->compositeImage($img, imagick::COMPOSITE_COPY, 0, 0);

?>



Then doing any resizing or creating thumbnails from the resulting image  disregarded all the previous commands so I "saved" it and started with a new Imagick object



<?php

      // Copy the image so clip is "saved"

      $clipped = new Imagick();

      $clipped->readImageBlob($composite->getImageBlob());

?>



I'm sure there is a simpler way, but this took me awhile to get right and there were some hurdles to cross so I hope it is able to help someone on the way.



This is all the convert equivalent of:



$ convert Test.psd -fill white -colorspace rgb -draw "color 0 0 reset" -clip -colorspace rgb -draw "Image Copy 0,0 0,0 'Test.psd'" OutputFile.png