<?php
/*****************************************************************************\
+-----------------------------------------------------------------------------+
| X-Cart                                                                      |
| Copyright (c) 2001-2007 Ruslan R. Fazliev <rrf@rrf.ru>                      |
| All rights reserved.                                                        |
\*****************************************************************************/
#   
# $Id: elegant.php,v 1.0 2007/08/17 
#   
    
if (!defined('XCART_START')) { header("Location: ../../"); die("Access denied"); }

function wave($foreground_color, $background_color, $img, $width, $height) {
	$center = $width / 2;
	
	// periods
	$rand1=mt_rand(750000,1200000)/10000000;
	$rand2=mt_rand(750000,1200000)/10000000;
	$rand3=mt_rand(750000,1200000)/10000000;
	$rand4=mt_rand(750000,1200000)/10000000;
	// phases
	$rand5=mt_rand(0,3141592)/500000;
	$rand6=mt_rand(0,3141592)/500000;
	$rand7=mt_rand(0,3141592)/500000;
	$rand8=mt_rand(0,3141592)/500000;
	// amplitudes
	$rand9=mt_rand(330,420)/110;
	$rand10=mt_rand(330,450)/110;

	$img2 = imagecreatetruecolor($width - 10, $height + 21);
	$bgcolor = imagecolorallocate($img2, $background_color['red'], $background_color['green'], $background_color['blue']);

	imagefilledrectangle($img2, 0, 0, imagesx($img2), imagesy($img2), $bgcolor);

	for ($x = 0; $x < $width; $x++) {
		for ($y = -10; $y < $height + 20; $y++) {
			$sx = $x + (sin($x * $rand1 + $rand5) + sin($y * $rand3 + $rand6)) * $rand9 - $width / 2 + $center + 1 - 8;
			$sy = $y + (sin($x * $rand2 + $rand7) + sin($y * $rand4 + $rand8)) * $rand10;
			if ($sx < 0 || $sy < 0 || $sx >= $width - 1 || $sy >= $height - 1) {
				$color = 255;
				$color_x = 255;
				$color_y = 255;
				$color_xy = 255;
			} else {
				$color = imagecolorat($img, $sx, $sy) & 0xFF;
				$color_x = imagecolorat($img, $sx+1, $sy) & 0xFF;
				$color_y = imagecolorat($img, $sx, $sy+1) & 0xFF;
				$color_xy = imagecolorat($img, $sx+1, $sy+1) & 0xFF;
			}

			if($color == 0 && $color_x == 0 && $color_y == 0 && $color_xy == 0){
				$newred = $foreground_color[0];
				$newgreen = $foreground_color[1];
				$newblue = $foreground_color[2];
			} elseif ($color == 255 && $color_x == 255 && $color_y == 255 && $color_xy == 255) {
				$newred = $background_color[0];
				$newgreen = $background_color[1];
				$newblue = $background_color[2];
			} else {
				$frsx = $sx - floor($sx);
				$frsy = $sy - floor($sy);
				$frsx1 = 1 - $frsx;
				$frsy1 = 1 - $frsy;
				$newcolor = (
							$color * $frsx1 * $frsy1 +
							$color_x * $frsx * $frsy1 +
							$color_y * $frsx1 * $frsy +
							$color_xy * $frsx * $frsy);

				if ($newcolor > 255) $newcolor = 255;
				$newcolor = $newcolor / 255;
				$newcolor0 = 1 - $newcolor;

				$newred = $newcolor0 * $foreground_color[0] + $newcolor * $background_color[0];
				$newgreen = $newcolor0 * $foreground_color[1] + $newcolor * $background_color[1];
				$newblue=$newcolor0*$foreground_color[2]+$newcolor*$background_color[2];
			}

			imagesetpixel($img2, $x, $y + 10, imagecolorallocate($img2,$newred,$newgreen,$newblue));
		}
	}
	return $img2;
}
 # This function came from the phpcaptcha library.
 #Copyright (C) 2005-2007, Edward Eliot.
 #Copyright (C) 2007 Joan Bautista.												  
 function drawCharacters($code,$im,$width, $height) {
 					global $characters;
         // loop through and write out selected number of characters
				 $aFonts = array('fonts/LucidaBrightDemiBold.ttf','fonts/VeraBI.ttf','fonts/LucidaBrightItalic.ttf',
				 'fonts/Vera.ttf','fonts/VeraSe.ttf','fonts/VeraMono.ttf');
				 $iSpacing = (int)( $width / strlen($code));
         for ($i = 0; $i < strlen($code); $i++) {
            // select random font
            $sCurrentFont =  $aFonts[array_rand($aFonts)];            
            // select random colour
               $iRandColour = rand(0, 100);
               $iTextColour = imagecolorallocate($im, $iRandColour, $iRandColour, $iRandColour);
            
            // select random font size
            $iFontSize = rand(16,25);
            
            // select random angle
            $iAngle = rand(-30, 30);
            
            // get dimensions of character in selected font and text size
            $aCharDetails = imageftbbox($iFontSize, $iAngle, $sCurrentFont, $code[$i], array());
            
            // calculate character starting coordinates
            $iX = $iSpacing / 4 + $i * $iSpacing;
            $iCharHeight = $aCharDetails[2] - $aCharDetails[5];
            $iY = $heightt / 2 + $width / 4; 
            
            // write text to image
            imagefttext($im, $iFontSize, $iAngle, $iX, $iY, $iTextColour, $sCurrentFont, $code[$i], array());
         }
				 return $im;
 }
 
function draw_lines($im, $width, $height) {
         for ($i = 0; $i < 75; $i++) {
            // allocate colour
               $iRandColour = rand(100, 200);
               $iLineColour = imagecolorallocate($im, $iRandColour, $iRandColour, $iRandColour);                      
            // draw line
            imageline($im, rand(0, $width), rand(0, $height), rand(0, $width), rand(0, $height), $iLineColour);
         }
				 return $im;
}
			


global $symbol_width;
global $height;
global $bCharShadow;

$symbol_width = 30;
$width = strlen($generation_str) * $symbol_width + 20;
$height = 50;
$code = $generation_str;
$bCharShadow = false;
$bg_color = array ('red' => 255,
					'green' => 255,
					'blue' => 255,
					0 => 255,
					1 => 255,
					2 => 255
					
				);	
$text_color = array (
					'red' => 0,
					'green' => 0,
					'blue' => 0,
					0 => 0,
					1 => 0,
					2 => 0
	            );

$im = imagecreate($width, $height);
// allocate white background colour
$bgcolor = imagecolorallocate($im, $bg_color['red'], $bg_color['green'], $bg_color['blue']);
imagefilledrectangle($im, 0, 0, imagesx($im), imagesy($im), $bgcolor);

$im = draw_lines($im, $width - 10, $height + 20);
$im = drawCharacters($code,$im, $width, $height);
#$im = wave($text_color,$bg_color, $im, $width, $height);


header("Content-type:image/png");
imagepng($im);
imagedestroy($im);
?>