<?
session_start();

$_GETinv = $_GET;
$_GETinv = array_flip($_GETinv);
$coordinates = $_GETinv[''];

list($x, $y) = split(",", $coordinates);

if ($_GET['clear'] == "yes") {
    session_destroy();
    print "<script language='JavaScript'>window.location='index.php';</script>";
}

if (intval($_SESSION['counter']) < 1 || $_GET['clear'] == "yes") {
    $_SESSION['counter'] = 1;
    $_SESSION['second'] = 1;
    $_SESSION['line_count'] = 1;
    $_SESSION['r'] = "0";
    $_SESSION['g'] = "0";
    $_SESSION['b'] = "0";
    $_SESSION['type'] = "circle";
} else {
    if (intval($x) > 0 && intval($y) > 0) {
        $_SESSION['counter']++;
    }
}


$counter = $_SESSION['counter'];

if ($_GET['r'] != "") { $_SESSION['r'] = $_GET['r']; }
if ($_GET['g'] != "") { $_SESSION['g'] = $_GET['g']; }
if ($_GET['b'] != "") { $_SESSION['b'] = $_GET['b']; }

if ($_GET['type'] != "") { $_SESSION['type'] = $_GET['type']; }

$line_count = $_SESSION['line_count'];

if (intval($x) > 0 && intval($y) > 0) {

if ($_SESSION['type'] == "line") {

    if ($_SESSION['second'] == 1) {
        $_SESSION['second'] = 2;
        $_SESSION['line'][$line_count][0][0] = $x;
        $_SESSION['line'][$line_count][1][0] = $y;

    } else {
        $_SESSION['second'] = 1;
        $_SESSION['line'][$line_count][0][1] = $x;
        $_SESSION['line'][$line_count][1][1] = $y;

        $_SESSION['linecolor'][$line_count]['r'] = $_SESSION['r'];
        $_SESSION['linecolor'][$line_count]['g'] = $_SESSION['g'];
        $_SESSION['linecolor'][$line_count]['b'] = $_SESSION['b'];

        $_SESSION['line_count']++;
    }
} else {

    $_SESSION['draw'][$counter]['x'] = $x;
    $_SESSION['draw'][$counter]['y'] = $y;
    $_SESSION['draw'][$counter]['r'] = $_SESSION['r'];
    $_SESSION['draw'][$counter]['g'] = $_SESSION['g'];
    $_SESSION['draw'][$counter]['b'] = $_SESSION['b'];
    $_SESSION['draw'][$counter]['type'] = $_SESSION['type'];

}


}

print "<a href=\"index.php\"><img src=\"image.php\" ISMAP alt=\"Click me =)\" style=\"border: 1px solid #000000;\"/></a>";

?>

<br/><br/><a href="index.php?r=255&g=0&b=0">red</a> <a href="index.php?r=0&g=255&b=0">green</a> <a href="index.php?r=0&g=0&b=255">blue</a><br/>
<a href="index.php?type=circle">circle</a> <a href="index.php?type=square">square</a> <a href="index.php?type=line">line</a><br/>
<a href="index.php?clear=yes">clear</a><br/><br/>


<?

print "Current color: {$_SESSION['r']},{$_SESSION['g']},{$_SESSION['b']}<br/>";
print "Current tool: {$_SESSION['type']}<br/>";

if ($_SESSION['second'] == "2") {
print "<br/><i>Partial line in memory. Click to select endpoint for this line.</i>";
}


?>