PHP根据图片色界在不同位置加水印的方法
这篇文章主要介绍了PHP根据图片色界在不同位置加水印的方法,可实现图片水印根据颜色环境的动态添加功能,需要的朋友可以参考下
本文实例讲述了PHP根据图片色界在不同位置加水印的方法。分享给大家供大家参考。具体实现方法如下:
function add_wm($nmw_water, $src_file, $output_file, $x, $y) { if(file_exists($output_file)) return; $w1 = MagickGetImageWidth($nmw_water); $h1 = MagickGetImageHeight($nmw_water); $nmw =NewMagickWand(); MagickReadImage($nmw, $src_file); // 默认的加水印位置调整 $lt_w = 50; $lt_h = 50; if($x == 0){ $w = MagickGetImageWidth($nmw); $h = MagickGetImageHeight($nmw); $x = $w; $y = $h; }else{ // 根据具体情况调整 $lt_w = 30; $lt_h = 40; } MagickCompositeImage($nmw, $nmw_water, MW_OverCompositeOp, $x - $w1 - $lt_w, $y - $h1 - $lt_h); MagickWriteImage($nmw, $output_file); DestroyMagickWand($nmw); } // 还是groovy的eachFileRecurse好用啊 function add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr) { $dp = dir($to_dir); while($file=$dp->read()){ if($file != '.' && $file != '..'){ if(is_dir($to_dir . '/' . $file)){ mkdir($output_dir . '/' . $file); add_wm_recurse($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $arr); }else{ if(!array_key_exists($to_dir . '/' . $file, $arr)){ continue; } $sub_arr = $arr[$to_dir . '/' . $file]; if($sub_arr){ $x = intval($sub_arr[0]); $y = intval($sub_arr[1]); add_wm($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $x, $y); } } } } $dp->close(); } $to_dir = './resized'; $output_dir = './output'; // 这个是我用java的ImageIO遍历图片像素获取的符合裤子颜色的区域的坐标array(posX, posY) $arr = array( array(50, 50) ); $water = './water.png'; $nmw_water =NewMagickWand(); MagickReadImage($nmw_water, $water); add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr); DestroyMagickWand($nmw_water);

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