Home Backend Development PHP Tutorial PHP adds watermarks at different locations based on the color boundary of the image

PHP adds watermarks at different locations based on the color boundary of the image

Jul 25, 2016 am 08:43 AM

PHP根据图片色界在不同位置加水印

  1. function add_wm($nmw_water, $src_file, $output_file, $x, $y) {
  2. if(file_exists($output_file))
  3. return;
  4. $w1 = MagickGetImageWidth($nmw_water);
  5. $h1 = MagickGetImageHeight($nmw_water);
  6. $nmw =NewMagickWand();
  7. MagickReadImage($nmw, $src_file);
  8. // 默认的加水印位置调整
  9. $lt_w = 50;
  10. $lt_h = 50;
  11. if($x == 0){
  12. $w = MagickGetImageWidth($nmw);
  13. $h = MagickGetImageHeight($nmw);
  14. $x = $w;
  15. $y = $h;
  16. }else{
  17. // 根据具体情况调整
  18. $lt_w = 30;
  19. $lt_h = 40;
  20. }
  21. MagickCompositeImage($nmw, $nmw_water, MW_OverCompositeOp, $x - $w1 - $lt_w, $y - $h1 - $lt_h);
  22. MagickWriteImage($nmw, $output_file);
  23. DestroyMagickWand($nmw);
  24. }
  25. // 还是groovy的eachFileRecurse好用啊
  26. function add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr) {
  27. $dp = dir($to_dir);
  28. while($file=$dp->read()){
  29. if($file != '.' && $file != '..'){
  30. if(is_dir($to_dir . '/' . $file)){
  31. mkdir($output_dir . '/' . $file);
  32. add_wm_recurse($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $arr);
  33. }else{
  34. if(!array_key_exists($to_dir . '/' . $file, $arr)){
  35. continue;
  36. }
  37. $sub_arr = $arr[$to_dir . '/' . $file];
  38. if($sub_arr){
  39. $x = intval($sub_arr[0]);
  40. $y = intval($sub_arr[1]);
  41. add_wm($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $x, $y);
  42. }
  43. }
  44. }
  45. }
  46. $dp->close();
  47. }
  48. $to_dir = './resized';
  49. $output_dir = './output';
  50. // 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)
  51. $arr = array(
  52. array(50, 50)
  53. );
  54. $water = './water.png';
  55. $nmw_water =NewMagickWand();
  56. MagickReadImage($nmw_water, $water);
  57. add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr);
  58. DestroyMagickWand($nmw_water);
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色界, PHP


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