本文整理汇总了PHP中Intervention\Image\Image::filter方法的典型用法代码示例。如果您正苦于以下问题：PHP Image::filter方法的具体用法？PHP Image::filter怎么用？PHP Image::filter使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Intervention\Image\Image的用法示例。
在下文中一共展示了Image::filter方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。
示例1: applyFilter
/**
* Applies filter effects to the given image
*
* @param Image\Image $image The image to filter.
*
* @return Image\Image The filtered image.
*
* @throws FilterException if the image filter algorithm fails.
*/
public function applyFilter(Image\Image $image)
{
if ($this->level <= 0) {
$gd = $image->getCore();
$width = imagesx($gd);
$height = imagesy($gd);
for ($x = 0; $x < $width; ++$x) {
for ($y = 0; $y < $height; ++$y) {
$rgba = imagecolorsforindex($gd, imagecolorat($gd, $x, $y));
$r = $rgba['red'];
$g = $rgba['green'];
$b = $rgba['blue'];
$a = $rgba['alpha'];
$level = $this->level * -1;
$max = max($r, $g, $b);
$avg = ($r + $g + $b) / 3;
$amt = abs($max - $avg) * 2 / 255 * $level / 100;
if ($r !== $max) {
$r += ($max - $r) * $amt;
}
if ($g !== $max) {
$g += ($max - $g) * $amt;
}
if ($b !== $max) {
$b += ($max - $b) * $amt;
}
imagesetpixel($gd, $x, $y, imagecolorallocatealpha($gd, $r, $g, $b, $a));
}
}
$image->setCore($gd);
} else {
$image->filter(new SaturateFilter($this->level));
}
return $image;
}示例2: applyFilter
/**
* Applies filter effects to the given image
*
* @param Image\Image $image The image to filter.
*
* @return Image\Image The filtered image.
*
* @throws FilterException if the image filter algorithm fails.
*/
public function applyFilter(Image\Image $image)
{
// Change the level range from 0-200 to -100-100 to use it in the
// brightness and contrast filters.
$level = $this->level - 100;
if ($level <= 0) {
$image->filter(new BrightnessFilter($level));
} else {
// Don't apply a ridiculous amount of brightness or contrast;
// exposure level 0-100 applies 0%-15% of contrast and brightness.
$level = (int) round($level / 100 * 15);
$image->filter(new BrightnessFilter($level));
$image->filter(new ContrastFilter($level));
}
return $image;
}