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/* ------------------------------------------------------------------------------
*
* # Circles
*
* Specific JS code additions for maps_google_drawings.html page
*
* Version: 1.0
* Latest update: Aug 1, 2015
*
* ---------------------------------------------------------------------------- */
$(function() {
// This example creates circles on the map, representing
// populations in North America.
// First, create an object containing LatLng and population for each city.
var citymap = {};
citymap['wroclaw'] = {
center: new google.maps.LatLng(51.112, 17.052),
population: 271485
};
citymap['budapest'] = {
center: new google.maps.LatLng(47.481, 19.130),
population: 840583
};
citymap['kernstadt'] = {
center: new google.maps.LatLng(51.720, 8.764),
population: 385779
};
citymap['nancy'] = {
center: new google.maps.LatLng(48.688, 6.173),
population: 603502
};
citymap['munich'] = {
center: new google.maps.LatLng(48.154, 11.541),
population: 594039
};
citymap['warsaw'] = {
center: new google.maps.LatLng(52.232, 21.061),
population: 492093
};
// Initialize
var cityCircle;
function initialize() {
// Options
var mapOptions = {
zoom: 6,
center: new google.maps.LatLng(50.059, 14.465),
mapTypeId: google.maps.MapTypeId.TERRAIN
};
// Apply options
var map = new google.maps.Map($('.map-drawing-circles')[0], mapOptions);
// Construct the circle for each value in citymap.
// Note: We scale the area of the circle based on the population.
for (var city in citymap) {
// Options
var populationOptions = {
strokeColor: '#b41b1b',
strokeOpacity: 0.5,
strokeWeight: 1,
fillColor: '#b41b1b',
fillOpacity: 0.2,
map: map,
center: citymap[city].center,
radius: Math.sqrt(citymap[city].population) * 100
};
// Add the circle for this city to the map.
cityCircle = new google.maps.Circle(populationOptions);
}
}
// Load map
google.maps.event.addDomListener(window, 'load', initialize);
});