functions used there are :

function addData(locs) {

var index = Math.floor(Math.random() * locs.length) - 1;

var start_lat = locs[index].lat;

var start_lng = locs[index].lng;

var data_size = 1;

var start = Math.floor(Math.random() * locs.length) - 1;

if (start + data_size > locs.length) {

start = locs.length - data_size - 1;

}

var hue = Math.random();

var i;

for (i = start; i < start + data_size; i++) {

var obj = locs[i];

if (i != index) {

addTrack(25.2697, 55.3095, 28.6667, 77.2167, planetRadius, hue+.5);//delhi

addMarker(28.6667, 77.2167, planetRadius);

addTrack(25.2697, 55.3095, 35.6833, 51.4167, planetRadius, hue+.5);//terhan

addMarker(35.6833, 51.4167, planetRadius);

addTrack(25.2697, 55.3095, 51.0000, 9.0000, planetRadius, hue+.5);//germany

addMarker(51.0000, 9.0000, planetRadius);

addTrack(25.2697, 55.3095, 33.6667, 73.1667, planetRadius, hue+.5);//Islamabad

addMarker(33.6667, 73.1667, planetRadius);

addTrack(25.2697, 55.3095, 31.2000, 121.5000, planetRadius, hue+.5);//Shanghai,

addMarker(31.2000, 121.5000, planetRadius);

}

}

}

function addMarker(lat, lng, radius) {

var marker_mesh = new THREE.Mesh(markerGeom, markerMaterial);

var marker_position = latlngPosFromLatLng(lat, lng, radius);

marker_mesh.position.x = marker_position.x;

marker_mesh.position.y = marker_position.y;

marker_mesh.position.z = marker_position.z;

marker_mesh.name = “trackmarker”;

meshPlanet.add(marker_mesh);

}

function addTrackLine(spline, hue) {

var num_control_points = 32;

var i;

var colors = ;

var geometry = new THREE.Geometry();

var pos;

for (i = 0; i < num_control_points; i++) {

var index = i / num_control_points;

pos = spline.getPoint(index);

colors[i] = new THREE.Color(0xffffff);

colors[i].setHSV(hue, (1.0 - i / num_control_points), 1.0);

geometry.vertices.push(new THREE.Vector3(pos.x, pos.y, pos.z));

}

pos = spline.getPoint(1.0);

geometry.vertices.push(new THREE.Vector3(pos.x, pos.y, pos.z));

geometry.colors = colors;

var material = new THREE.LineBasicMaterial({

color: 0xffffff,

opacity: 1,

linewidth: 2

});

material.vertexColors = true;

var line = new THREE.Line(geometry, material);

line.name = “trackline”;

meshPlanet.add(line);

}

function addTrack(start_lat, start_lng, end_lat, end_lng, radius, hue) {

var num_control_points = 8;

var max_altitude = 500 + Math.random() * 1200;

var points = ;

var i;

for (i = 0; i < num_control_points + 1; i++) {

var arc_angle = i * 180.0 / num_control_points;

var arc_radius = radius + (Math.sin(latlngDeg2rad(arc_angle))) * max_altitude;

var latlng = latlngInterPoint(start_lat, start_lng, end_lat, end_lng, i / num_control_points);

var pos = latlngPosFromLatLng(latlng.lat, latlng.lng, arc_radius);

points.push(new THREE.Vector3(pos.x, pos.y, pos.z));

}

var spline = new THREE.SplineCurve3(points);

addTrackLine(spline, hue);

}