var interval_id = -1;
var colorindex = 0;

ambientcolorchange = function () {
    if (cmworld) {
        colorindex++;

        if (colorindex > 3) {
            colorindex = 0;
        }

        if (colorindex == 0) {
            cmworld.setAmbientColor(0x555555);
        }
        else if (colorindex == 1) {
            cmworld.setAmbientColor(0xff0000);
        }
        else if (colorindex == 2) {
            cmworld.setAmbientColor(0x00ff00);
        }
        else if (colorindex == 3) {
            cmworld.setAmbientColor(0x0000ff);
        }
    }
}


AmbientLight = function () {
	init();
	
	interval_id = setInterval(ambientcolorchange, 1000);
	
	cmworld.option.worldTimer.reset();
	cmworld.option.worldTimer.setSpeed(10000);
	cmworld.option.worldTimer.setStartDateTime(2015, 7, 12, 14, 0, 0, 0);
	cmworld.option.worldTimer.start();
}


DayNight = function () {
	init();
	
	var eye_x = 126.925;
	var eye_y = 37.5219;
	var eye_h = 1000;
	var look_x = 126.928;
	var look_y = 37.5219;
	var look_h = 10;
	
	cmworld.gotoLookAt(eye_x, eye_y, eye_h, look_x, look_y, look_h);
	
	cmworld.enableSunLight(true);
	cmworld.setAmbientColor(0x11111111);
	
	cmworld.option.worldTimer.reset();
	cmworld.option.worldTimer.setSpeed(10000);
	cmworld.option.worldTimer.setStartDateTime(2015, 7, 12, 14, 0, 0, 0);
	cmworld.option.worldTimer.start();
}