Question

我已经在用PHP编写的名为Sngine的社交网络CMS中添加了裁剪功能。我添加了一个jquery插件，以便用户可以选择他们想要的图像区域。我使用imagecopyresampled来选择所需的图像坐标，但是出现问题并且它没有按预期工作，很多图像没有被复制，最终输出仍然保留黑色背景。

以下是原始图片

这是最终输出

我真的不确定我在这里做错了什么，许多教程使用相同的算法来完成裁剪。坐标正在从crop插件正确传递到php脚本。

以下是我的代码

    <?php
/**
 * ajax -> data -> report
 *
 * @package Sngine
 * @author Zamblek
 */

// fetch bootstrap
require('../../../bootstrap.php');

// fetch image class
require('../../class-image.php');
// check AJAX Request
is_ajax();

// user access

user_access(true);
try {
    $x = $_POST['crop']['x'];
    $y = $_POST['crop']['y'];
    $x2 = $_POST['crop']['x2'];
    $y2 = $_POST['crop']['y2'];
    $width = $_POST['crop']['w'];
    $height = $_POST['crop']['h'];    

    $file_path = $_POST['crop_file'];
    $file_path = $system['uploads_directory'].'/'.$file_path;
    $file_path = '../../../'.$file_path;

    $image = new Image($file_path);
    $type = $image->get_type();

    //crop and resize image
    $newImage = imagecreatetruecolor($width,$height);

    switch($type) {
        case "image/gif":
            $source = imagecreatefromgif($file_path);
            break;
        case "image/pjpeg":
        case "image/jpeg":
        case "image/jpg":
            $source = imagecreatefromjpeg($file_path);
            break;
        case "image/png":
        case "image/x-png":
            $source = imagecreatefrompng($file_path);
            break;
    }
    $src_w = imagesx($source);
    $src_h = imagesy($source);


    //imagecopy($newImage,$source,0,0,$x,$y,$width,$height);
    imagecopyresampled($newImage,$source,0,0,$x,$y,$width,$height,$src_w,$src_h);



    switch($type) {
        case "image/gif":
            imagegif($newImage,$file_path);
            break;
        case "image/pjpeg":
        case "image/jpeg":
        case "image/jpg":
            imagejpeg($newImage,$file_path,90);
            break;
        case "image/png":
        case "image/x-png":
            imagepng($newImage,$file_path);
            break;
    }
    imagedestroy($newImage);
    return_json(['file' => $_POST['crop_file']]);

} catch (Exception $e){
    modal(ERROR, __("Error"), $e->getMessage());
}

imagecopyresampled没有选择图像的定义坐标

0 个答案: