gistfile1.js

var mooon = angular.module('mooon', []);

mooon.controller('MapController', function($scope) {
    $scope.bodies = [
        {radius: 14, x: 90, y: 90},
        {radius: 4, x: 80, y: 80}
    ];

    requestAnimationFrame(function updateMap(time) {
        requestAnimationFrame(updateMap);

        $scope.bodies[1].x = $scope.bodies[0].x + 30 * Math.cos(time / 300);
        $scope.bodies[1].y = $scope.bodies[0].y + 30 * Math.sin(time / 300);

        $scope.$apply();
    });
});