<?php
/*
 * @Author: 田老师 4021673@qq.com
 * @Date: 2022-11-04 04:29:16
 * @LastEditTime: 2022-11-05 15:34:04
 * @Description: Do not edit
 */
namespace Org\ImageController;
class ImageController
{
    private $width;
    private $height;
    private $fileName;
    private $path;
    /**
     * @param {*} $width 缩放之后的宽度
     * @param {*} $height   缩放之后的高度
     * @param {*} $fileName 文件路径名字
     * @param {*} $path 生成图片保存的路径
     */    
    public function __construct($width,$height,$fileName,$path)
    {
        date_default_timezone_set('Asia/Shanghai');
        error_reporting(E_ALL & ~E_NOTICE & ~E_WARNING);
        $this->width=$width;
        $this->height=$height;
        $this->fileName=$fileName;
        $this->path=$path;
    }

    /**
     * @description: 先缩放 再 圆角处理图片
     * @return {*} 生成图片的 路径及名字
     */
    public function make_img()
    {
        //第一步 压缩图片
        $imggzip = $this->resize_img();
        //第二步 裁减成圆角图片
        return $this->round_img($imggzip);
    }

    public function resize_img()
    {
        $imgname = $this->path . uniqid() . '.png';

        list($width, $height) = getimagesize($this->fileName); //获取原图尺寸
        //缩放尺寸
        $src_im = imagecreatefromjpeg($this->fileName);
        $dst_im = imagecreatetruecolor($this->width, $this->height);
        imagecopyresized($dst_im, $src_im, 0, 0, 0, 0, $this->width, $this->height, $width, $height);
        imagejpeg($dst_im, $imgname); //输出压缩后的图片
        imagedestroy($dst_im);
        imagedestroy($src_im);
        return $imgname;
    }
    public function round_img($url)
    {
        $w = $this->width;
        $h = $this->height; // original size
        $original_path = $url;
        $dest_path = $this->path . uniqid() . '.png';
        $src = imagecreatefromstring(file_get_contents($original_path));
        $newpic = imagecreatetruecolor($w, $h);
        imagealphablending($newpic, false);
        $transparent = imagecolorallocatealpha($newpic, 0, 0, 0, 127);
        $r = $w / 2;
        for ($x = 0; $x < $w; $x++)
            for ($y = 0; $y < $h; $y++) {
                $c = imagecolorat($src, $x, $y);
                $_x = $x - $w / 2;
                $_y = $y - $h / 2;
                if ((($_x * $_x) + ($_y * $_y)) < ($r * $r)) {
                    imagesetpixel($newpic, $x, $y, $c);
                } else {
                    imagesetpixel($newpic, $x, $y, $transparent);
                }
            }
        imagesavealpha($newpic, true);
        imagepng($newpic, $dest_path);
        imagedestroy($newpic);
        imagedestroy($src);
        unlink($url);
        return $dest_path;
    }
}
