coincide.js

var isCoincide = function (a, b) {
    var _XDif = Math.abs(a.x() - b.x());
    var _YDif = Math.abs(a.y() - b.y());

    return (_XDif <= a.width() && _YDif <= a.height()) || (_XDif <= b.width() && _YDif <= b.height());
}