<?php


// sample data
$events_array[0] = array( 'stage' => "Stage 1", "date_start" => "7/1/2007", "date_end" => "7/1/2007", 'color' => 'CED0B0' );
$events_array[1] = array( 'stage' => "Stage 2", "date_start" => "7/3/2007", "date_end" => "7/12/2007", 'color' => 'B2D0B0' );
$events_array[2] = array( 'stage' => "Stage 3", "date_start" => "7/9/2007", "date_end" => "7/15/2007", 'color' => '8589BB' );
$events_array[3] = array( 'stage' => "Stage 4", "date_start" => "7/16/2007", "date_end" => "7/18/2007", 'color' => 'B885BB' );
$events_array[4] = array( 'stage' => "Stage 5", "date_start" => "7/17/2007", "date_end" => "7/19/2007", 'color' => 'BB858D' );
$events_array[5] = array( 'stage' => "Stage 6", "date_start" => "7/20/2007", "date_end" => "7/25/2007", 'color' => 'CED0B0' );
$events_array[6] = array( 'stage' => "Stage 7", "date_start" => "7/24/2007", "date_end" => "7/27/2007", 'color' => 'B2D0B0' );
$events_array[7] = array( 'stage' => "Stage 8", "date_start" => "7/27/2007", "date_end" => "7/30/2007", 'color' => '8589BB' );
$events_array[8] = array( 'stage' => "Stage 9", "date_start" => "7/28/2007", "date_end" => "7/30/2007", 'color' => '8589BB' );
$events_array[9] = array( 'stage' => "Stage 10", "date_start" => "7/29/2007", "date_end" => "8/1/2007", 'color' => 'B885BB' );


$data_for_chart = '';

foreach ( $events_array as $key => $value ){
	
	$date_start_u = date('U', strtotime ($value['date_start']) );
	$date_end_u = date('U', strtotime ($value['date_end']) );
	
	$data_for_chart[$key]['label'] = $value['stage'];
	$data_for_chart[$key]['value'] = (( $date_end_u - $date_start_u ) / 86400 ) + 1;
	
}


//get total_value
$total_value = '';
foreach ( $data_for_chart as $key => $value ) {
		$total_value = $total_value + $value['value'];
}


 	  // create image
$image = imagecreatetruecolor(1400, 1400);

// allocate some solors
$color['white']= imagecolorallocate($image, 0xFF, 0xFF, 0xFF);

$color[0]    = imagecolorallocate($image, 250, 0, 0); //
$color[1]   = imagecolorallocate($image, 255, 126, 0);
$color[2] = imagecolorallocate($image, 255, 255, 0);
$color[3]    = imagecolorallocate($image, 0, 255, 0);
$color[4] = imagecolorallocate($image, 0, 255, 255);

$color[5]     = imagecolorallocate($image, 0, 0, 255);
$color[6]  = imagecolorallocate($image, 180, 0, 250);
$color[7]    = imagecolorallocate($image, 255, 0, 180);
$color[8]   = imagecolorallocate($image, 192, 197, 131);
$color[9] = imagecolorallocate($image, 80, 80, 80);


imagefill ( $image, 0, 0, $color['white'] );


$i = 0;
$rad = 0;

foreach ( $data_for_chart as $key => $value ) {
	//calculate the percentage of total value
	
	$rad_begin = $rad;
	
	$rad = $rad + ( $value['value'] * 360 ) / $total_value ;
	//echo "rad = $rad label = ".$value['label']. "value = ".$value['value']."<BR />";
	
	
	imagefilledarc($image, 300, 300, 500, 500, $rad_begin, $rad, $color[$i], IMG_ARC_PIE);
	
		// Waterfall of point sizes to see what Freetype 2's autohinting looks like:
	//
	
	//$t = (( $rad - $rad_begin )/2) + $rad_begin;
	
	$t = (($rad - $rad_begin)/2) + $rad_begin;
	
	//x(t) = r cos(t) + j
	//y(t) = r sin(t) + k
	
	$per = intval(  ($value['value'] * 100 )/$total_value );
	
	// beginings of adding labels next to each pie piece
	//$x_coor = intval( (200 * cos( deg2rad($t) ) ) + 500 );
	//$y_coor = intval( (200 * sin( deg2rad($t) ) ) + 500 );
	

	//ImageFtText($image,20,0,$y_coor,$x_coor,$forecolor,'./fonts/Arena Condensed.ttf', $value['label']." ".$value['value']." days", array("linespacing" => .90));
	
	imagefilledrectangle ($image, 600, 75 + ($i*50), 650, 95 + (($i*50) + 25), $color[$i] );
	ImageFtText($image,30,0,675,112 + ($i*50),$forecolor,'../fonts/Arena Condensed.ttf', $value['label']." (".$per ."%)", array("linespacing" => 10.0));
	    
 	 
	$i = $i+1;
}


imageantialias ( $image, 1 );


$destImage = imagecreatetruecolor(400,200);

imagecopyresampled($destImage,$image,0,0,0,0,400,200,1400,700);


// flush image
header('Content-type: image/png');
imagepng($destImage);
imagedestroy($image);
imagedestroy($destImage);
 	  
 	  
 ?>