Question

Fired when selected country changes.

Pass two objects: selectedCountry and relatedCountries. Selected country is an country
object for new selected country, relatedCountries are country objects for countries related to new
selected country.

Usage:

// use the onCountryPicked() to set callback when clicked country changed
controller.onCountryPicked( callback );

// defined a callback function, as a demo, this function simply output selectedCountry, relatedCountries
which are passed parameters into console
function callback ( selectedCountry, relatedCountries ) {

        console.log(selectedCountry);
        console.log(relatedCountries);

}

CountryObject
CountryObject is a JSON object as defined below (the values of attribute varies):

{
        ISOCode: "AU"
        center: THREE.vector
        lat: -27
        lon: 133
        name: "AUSTRALIA"
}

Table of CountryObject parameters:

Parameter	Description
ISOCode	ISO code of country
center	THREE.vector object in the scene of country
lat	latitude of country
lon	longitude of country
name	country name