<?php

function put_char($char,$rgb,$posx,$posy) {
}

function confirm($string) {
$config = array(
    'font'=>'arial.ttf', // font
    'fontpath'=>PATH_CORE.'/plugins/', // polozenie pliku z fontem
    'image'=>'captcha1.png', // nazwa obrazka typu PNG uzywanego jako background
    'light'=>0, // jasnosc napisu, 100=bialy, 0=czarny
    'saturation'=>90, // nasycenie koloru napisu, 0=szary, 100=najbardziej nasycony
    'alpha'=>60, // przezroczystosc napisu, 0=bez przezroczystosci, 100=calkowicie transparentny
    'imageheight'=>60,
    'imagewidth'=>160
    );


putenv('GDFONTPATH=' . realpath($config['fontpath']));
//$im    = imagecreatefrompng($config['image']);
$im = imagecreatetruecolor($config['imagewidth'], $config['imageheight']);
if ($im) {
    $white = imagecolorallocate($im, 255, 255, 255);
    imagefilledrectangle($im, 0, 0, $config['imagewidth'], $config['imageheight'], $white);
    $maxfontheight=$config['imageheight']*0.7;
    $minfontheight=$config['imageheight']*0.4;
    
    $px    = ($config['imagewidth']-20)/(strlen($string));

    header('Content-Type: image/png');
    header('Cache-control: no-cache, no-store');

    $textcolor=mt_rand(0, 359);
    for ($i=0; $i<20; $i++) {
        $rgb=hls2rgb(mt_rand($textcolor+20, $textcolor+319),60,$config['saturation']);
        $color = imagecolorallocatealpha($im, $rgb[0], $rgb[1],$rgb[2],$config['alpha']);
        $angle=mt_rand(-15, 15);
        $fontheight=mt_rand($minfontheight/2, $minfontheight);
        $posx=mt_rand(0, $config['imagewidth']);
        $posy=mt_rand($fontheight, $config['imageheight']);
        imagettftext( $im, $fontheight, $angle, $posx, $posy, $color, realpath($config['fontpath']).'/'.$config['font'], chr(mt_rand(ord('A'),ord('Z')))  );
        }

    $rgb=hls2rgb($textcolor,$config['light'],$config['saturation']);
    $color = imagecolorallocatealpha($im, $rgb[0], $rgb[1],$rgb[2],$config['alpha']);
    for ($i=0; $i<strlen($string); $i++) {
        $angle=mt_rand(-15, 15);
        $fontheight=mt_rand($minfontheight, $maxfontheight);
        $posx=$i*$px+mt_rand(0, $px/4)+10;
        $py    = ($config['imageheight']+$fontheight)/2;
        imagettftext( $im, $fontheight, $angle, $posx, $py, $color, realpath($config['fontpath']).'/'.$config['font'], $string[$i] );
        }

    for ($i=0; $i<20; $i++) {
        $rgb=hls2rgb(mt_rand($textcolor+20, $textcolor+319),60,$config['saturation']);
        $color = imagecolorallocatealpha($im, $rgb[0], $rgb[1],$rgb[2],$config['alpha']);
        $angle=mt_rand(-15, 15);
        $fontheight=mt_rand($minfontheight/2, $minfontheight);
        $posx=mt_rand(0, $config['imagewidth']);
        $posy=mt_rand($fontheight, $config['imageheight']);
        imagettftext( $im, $fontheight, $angle, $posx, $posy, $color, realpath($config['fontpath']).'/'.$config['font'], chr(mt_rand(ord('A'),ord('Z')))  );
        }

    $color = imagecolorallocate($im, 0, 0,0);
    imagepng($im);
    imagedestroy($im);
    }
else
    die('Problem with file '.$config['image']);
}

function XRGB($hh, $mm1, $mm2) {
// funkcja pomocnicza
$hh=$hh%360;

if ($hh < 60) 
    return $mm1 + ($mm2 - $mm1) * $hh / 60;
elseif ($hh < 180) 
    return $mm2;
elseif ($hh < 240) 
    return $mm1 + ($mm2 - $mm1) * (240 - $hh) / 60;
else
    return $mm1;
}

function hls2rgb($h,$l,$s) {
$il = ($l%100) / 100;
$ih = ($h%360);
$is = ($s%100) / 100;
if ($il <= 0.5) 
    $m2 = $il * (1 + $is);
else 
    $m2 = $il + $is - $il * $is;

$m1 = 2*$il - $m2;

if ($s == 0) {
    $ir = $il;
    $ig = $il;
    $ib = $il;
    }
else {
    $ir = XRGB($ih + 120, $m1, $m2);
    $ig = XRGB($ih , $m1, $m2);
    $ib = XRGB($ih - 120, $m1, $m2);
    }
return array(round($ir * 255),round($ig * 255),round($ib * 255));
}


?>