function _imageapi_gd_pixel_negate in ImageAPI 6

Same name and namespace in other branches

1. 5 imagefilter.inc \_imageapi_gd_pixel_negate()

1 string reference to '_imageapi_gd_pixel_negate'

imagefilter in ./imagefilter.inc

File

./imagefilter.inc, line 53

Code

function _imageapi_gd_pixel_negate(&$r, &$g, &$b, &$a) {
  $r = 255 - $r;
  $g = 255 - $g;
  $b = 255 - $b;
}