public function toJSON()
{
$polylineEncoder = new PolylineEncoder();
$arr = array();
$points = $this->getPoints();
foreach ($points as $point) {
list($encodedPoints, $encodedLevels, $encodedLiteral) = $polylineEncoder->dpEncode($points);
$arr['points'] = $points;
$arr['encoded'] = array('points' => $encodedPoints, 'levels' => $encodedLevels, 'numLevels' => 18, 'zoomFactor' => 2);
}
return Convert::raw2json($arr);
}
public function circle_map($lat, $lng)
{
/* set some options */
$MapLat = $lat;
// latitude for map and circle center
$MapLng = $lng;
// longitude as above
$Rad = 100;
// the radius of our circle (in Kilometres)
$MapFill = 'FF00A2';
// fill colour of our circle
$MapBorder = '91A93A';
// border colour of our circle
$MapWidth = 210;
// map image width (max 640px)
$MapHeight = 210;
// map image height (max 640px)
$Lat = $MapLat;
$Lng = $MapLng;
$Detail = 8;
$R = 1600000;
$pi = pi();
$Lat = $Lat * $pi / 180;
$Lng = $Lng * $pi / 180;
$d = $Rad / $R;
$points = array();
$i = 0;
for ($i = 0; $i <= 360; $i += $Detail) {
$brng = $i * $pi / 180;
$pLat = asin(sin($Lat) * cos($d) + cos($Lat) * sin($d) * cos($brng));
$pLng = ($Lng + atan2(sin($brng) * sin($d) * cos($Lat), cos($d) - sin($Lat) * sin($pLat))) * 180 / $pi;
$pLat = $pLat * 180 / $pi;
$points[] = array($pLat, $pLng);
}
require_once 'PolylineEncoder.php';
$PolyEnc = new PolylineEncoder($points);
$EncString = $PolyEnc->dpEncode();
$EncString = $EncString['Points'];
/* put together the static map URL */
$MapAPI = 'http://maps.google.com.au/maps/api/staticmap?';
$MapURL = $MapAPI . 'center=' . $MapLat . ',' . $MapLng . '&zoom=15&size=' . $MapWidth . 'x' . $MapHeight . '&maptype=roadmap&path=fillcolor:0x' . $MapFill . '33%7Ccolor:0x' . $MapBorder . '00%7Cenc:' . $EncString . '&sensor=false';
return $MapURL;
/* output an image tag with our map as the source */
}
function simplePolyline($points)
{
$reducer = new PolylineReducer($points);
$simple = $reducer->SimplerLine(0.001);
$p = new PolylineEncoder();
$pl = $p->dpEncode($simple);
return $pl[2];
}
public function toXML()
{
$polylineEncoder = new PolylineEncoder();
$xml = "<{$this->Name} srid=\"" . Convert::raw2att($this->srid) . "\">";
$rings = $this->getRings();
if ($rings) {
foreach ($rings as $ring) {
$inverseRing = array();
foreach ($ring as $point) {
$inverseRing[] = array_reverse($point);
}
$xml .= "<ring>";
list($encodedPoints, $encodedLevels, $encodedLiteral) = $polylineEncoder->dpEncode($inverseRing);
$xml .= "<encoded><![CDATA[{$encodedPoints}]]></encoded>";
$xml .= "<points>";
foreach ($ring as $coordPair) {
$xml .= '<point x="' . Convert::raw2xml($coordPair[0]) . '" y="' . Convert::raw2xml($coordPair[1]) . '" />';
}
$xml .= "</points>";
$xml .= "</ring>";
}
}
$xml .= "</{$this->Name}>";
return $xml;
}
function GMapCircle($Lat, $Lng, $Rad, $Detail = 8)
{
$R = 6371;
$pi = pi();
$Lat = $Lat * $pi / 180;
$Lng = $Lng * $pi / 180;
$d = $Rad / $R;
$points = array();
$i = 0;
for ($i = 0; $i <= 360; $i += $Detail) {
$brng = $i * $pi / 180;
$pLat = asin(sin($Lat) * cos($d) + cos($Lat) * sin($d) * cos($brng));
$pLng = ($Lng + atan2(sin($brng) * sin($d) * cos($Lat), cos($d) - sin($Lat) * sin($pLat))) * 180 / $pi;
$pLat = $pLat * 180 / $pi;
$points[] = array($pLat, $pLng);
}
require_once 'PolylineEncoder.php';
//http://www.svennerberg.com/examples/polylines/PolylineEncoder.php.txt
$PolyEnc = new PolylineEncoder($points);
$EncString = $PolyEnc->dpEncode();
return $EncString['Points'];
}
