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PHP Image::filter方法代码示例

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?那么恭喜您, 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;
 }
开发者ID:BitmanNL,项目名称:traffictower-cms,代码行数:44,代码来源:VibranceFilter.php

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;
 }
开发者ID:BitmanNL,项目名称:traffictower-cms,代码行数:25,代码来源:ExposureFilter.php


注:本文中的Intervention\Image\Image::filter方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。