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| author | Henry Sudhof <kellanved@phpbb.com> | 2009-01-21 13:37:50 +0000 |
|---|---|---|
| committer | Henry Sudhof <kellanved@phpbb.com> | 2009-01-21 13:37:50 +0000 |
| commit | 71039008474e678959a432db1868faf5d6a3cb71 (patch) | |
| tree | 6025cab93575492e49e04b67d94008278d2b900c /phpBB/includes/captcha/captcha_gd.php | |
| parent | fce20fd8988d83e27e76ea057c25d189347df400 (diff) | |
| download | forums-71039008474e678959a432db1868faf5d6a3cb71.tar forums-71039008474e678959a432db1868faf5d6a3cb71.tar.gz forums-71039008474e678959a432db1868faf5d6a3cb71.tar.bz2 forums-71039008474e678959a432db1868faf5d6a3cb71.tar.xz forums-71039008474e678959a432db1868faf5d6a3cb71.zip | |
New option for the GD VC. Parameters need some more tweaking
git-svn-id: file:///svn/phpbb/branches/phpBB-3_0_0@9283 89ea8834-ac86-4346-8a33-228a782c2dd0
Diffstat (limited to 'phpBB/includes/captcha/captcha_gd.php')
| -rw-r--r-- | phpBB/includes/captcha/captcha_gd.php | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/phpBB/includes/captcha/captcha_gd.php b/phpBB/includes/captcha/captcha_gd.php index 9c9eb5eda7..04a449bfde 100644 --- a/phpBB/includes/captcha/captcha_gd.php +++ b/phpBB/includes/captcha/captcha_gd.php @@ -27,6 +27,7 @@ class captcha var $width = 360; var $height = 96; + /** * Create the image containing $code with a seed of $seed */ @@ -34,7 +35,7 @@ class captcha { global $config; srand($seed); - mt_srand($seed); + //mt_srand($seed); // Create image $img = imagecreatetruecolor($this->width, $this->height); @@ -98,8 +99,8 @@ class captcha imagedashedline($img, mt_rand($x -3, $x + 3), mt_rand(0, 4), mt_rand($x -3, $x + 3), mt_rand($this->height - 5, $this->height), $current_colour); } } - $xoffset = 5; + for ($i = 0; $i < $code_len; ++$i) { $dimm = $bounding_boxes[$i]; @@ -109,12 +110,14 @@ class captcha $characters[$i]->drawchar($sizes[$i], $xoffset, $yoffset, $img, $colour->get_resource('background'), $scheme); $xoffset += $dimm[2]; } - + if ($config['captcha_gd_wave']) + { + $this->wave($img); + } if ($config['captcha_gd_foreground_noise']) { $this->noise_line($img, 0, 0, $this->width, $this->height, $colour->get_resource('background'), $scheme, $bg_colours); } - // Send image header('Content-Type: image/png'); header('Cache-control: no-cache, no-store'); @@ -123,6 +126,38 @@ class captcha } /** + * Sinus + */ + function wave($img) + { + global $config; + + $period_x = mt_rand(8,18); + $period_y = mt_rand(5,14); + $amp_x = mt_rand(5,10); + $amp_y = mt_rand(2,4); + $socket = mt_rand(0,100); + + $dampen_x = mt_rand($this->width/5, $this->width/2); + $dampen_y = mt_rand($this->height/5, $this->height/2); + $direction_x = (mt_rand (0, 1)); + $direction_y = (mt_rand (0, 1)); + + for ($i = 0; $i < $this->width; $i++) + { + $dir = ($direction_x) ? $i : ($this->width - $i); + imagecopy($img, $img, $i-1, sin($socket+ $i/($period_x + $dir/$dampen_x)) * $amp_x, $i, 0, 1, $this->height); + } + $socket = mt_rand(0,100); + for ($i = 0; $i < $this->height; $i++) + { + $dir = ($direction_y) ? $i : ($this->height - $i); + imagecopy($img, $img ,sin($socket + $i/($period_y + ($dir)/$dampen_y)) * $amp_y, $i-1, 0, $i, $this->width, 1); + } + return $img; + } + + /** * Noise line */ function noise_line($img, $min_x, $min_y, $max_x, $max_y, $bg, $font, $non_font) |