Imagick::transverseImage
After operations that change the crop of the image, like trimImage does, IM preserves the old canvas and positioning info. If you need to do additional operations on the image based on the new size, you'll need to reset this info with setImagePage. This is the equivalent of the +repage command line argument.
<?php
$im->trimImage(0);
$im->setImagePage(0, 0, 0, 0);
?>
Imagick::trimImage
(PECL imagick 2.0.0)
Imagick::trimImage — Remove edges from the image
Opis
bool Imagick::trimImage
( float
$fuzz
)Remove edges that are the background color from the image. Ta metoda jest dostępna, jeśli rozszerzenie Imagick zostało skompilowane z ImageMagick w wersji 6.2.9 lub nowszej.
Parametry
-
fuzz -
By default target must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. The fuzz member of image defines how much tolerance is acceptable to consider two colors as the same. This parameter represents the variation on the quantum range.
Zwracane wartości
Zwraca TRUE w przypadku sukcesu.
Błędy/Wyjątki
Zgłasza wyjątek ImagickException w przypadku błędu.
Przykłady
Przykład #1 Using Imagick::trimImage():
Trim an image, then display to the browser.
<?php
/* Create the object and read the image in */
$im = new Imagick("image.jpg");
/* Trim the image. */
$im->trimImage(0);
/* Ouput the image */
header("Content-Type: image/" . $im->getImageFormat());
echo $im;
?>
Zobacz też:
- Imagick::getQuantumDepth() - Gets the quantum depth
- Imagick::getQuantumRange() - Returns the Imagick quantum range
add a note
User Contributed Notes
Imagick::trimImage
dhp
22-Apr-2009 10:31
Mark van der Velden
05-Dec-2007 06:35
This method requires ImageMagick version >= 6.2.8