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- <?PHP
-
- require('common.php');
-
- if (isset($_GET['graph'])) {
- $imei = isset($_GET['imei']) ? $_GET['imei'] : decodeIMEI($_GET['code']);
-
- $sql = 'SELECT log_data FROM sensorlogger WHERE log_id = ' . ((int) $_GET['graph']) . ' AND log_imei = \'' . m($imei) . '\'';
- $res = mysql_query($sql);
-
- if (mysql_num_rows($res) == 0) {
- die('Data not found');
- }
-
- $row = mysql_fetch_assoc($res);
-
- $datax = array();
- $datay = array();
- $dataz = array();
- foreach (explode("\n", $row['log_data']) as $line) {
- if (preg_match('/([0-9]+):(?:.*?,.*?,.*?,){'.($_GET['ds']-1).'}([0-9\.\-]+),([0-9\.\-]+),([0-9\.\-]+)/', $line, $m)) {
- $datax[] = (double) $m[2];
- $datay[] = (double) $m[3];
- $dataz[] = (double) $m[4];
- }
- }
-
- $im = imagecreatetruecolor(count($datax) * 2, 330);
- $w = imagecolorallocate($im, 255, 255, 255);
- imagefill($im, 0, 0, $w);
-
- $r = imagecolorallocate($im, 255, 0, 0);
- $g = imagecolorallocate($im, 0, 255, 0);
- $b = imagecolorallocate($im, 0, 0, 255);
-
- $grey = imagecolorallocate($im, 200, 200, 200);
- $lgrey = imagecolorallocate($im, 230, 230, 230);
-
- $minx = min($datax); $maxx = max($datax); $rangex = max(0.01, $maxx - $minx);
- $miny = min($datay); $maxy = max($datay); $rangey = max(0.01, $maxy - $miny);
- $minz = min($dataz); $maxz = max($dataz); $rangez = max(0.01, $maxz - $minz);
- $lastx = $lasty = $lastz = -0;
-
- imagestring($im, 1, 2, 6, 'Min: ' . $minx . '; Max: ' . $maxx . '; Range: ' . $rangex, $grey);
- imagestring($im, 1, 2, 116, 'Min: ' . $miny . '; Max: ' . $maxy . '; Range: ' . $rangey, $grey);
- imagestring($im, 1, 2, 226, 'Min: ' . $minz . '; Max: ' . $maxz . '; Range: ' . $rangez, $grey);
-
- imageline($im, 0, 5, count($datax) * 2, 5, $grey);
- imageline($im, 0, 105, count($datax) * 2, 105, $grey);
- imageline($im, 0, 115, count($datax) * 2, 115, $grey);
- imageline($im, 0, 215, count($datax) * 2, 215, $grey);
- imageline($im, 0, 225, count($datax) * 2, 225, $grey);
- imageline($im, 0, 325, count($datax) * 2, 325, $grey);
-
- for ($i = 0; $i < count($datax); $i++) {
- $x = ($datax[$i] - $minx) * 100 / $rangex + 5;
- $y = ($datay[$i] - $miny) * 100 / $rangey + 115;
- $z = ($dataz[$i] - $minz) * 100 / $rangez + 225;
-
- if ($i > 0) {
- imageline($im, 2 * $i - 2, $lastx, $i * 2, $x, $r);
- imageline($im, 2 * $i - 2, $lasty, $i * 2, $y, $g);
- imageline($im, 2 * $i - 2, $lastz, $i * 2, $z, $b);
- }
-
- $lastx = $x; $lasty = $y; $lastz = $z;
- }
-
- header('Expires: ' . date(DateTime::RFC822, strtotime('+10 years')));
- header('Cache-control: public');
- header('Content-type: image/png');
- imagecolortransparent($im, $w);
- imagepng($im);
- return;
- }
-
- ?>
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