var directionalLight = new THREE.DirectionalLight(pointColor);
directionalLight.position.set(-40, 60, -10);
directionalLight.castShadow = true;
directionalLight.shadowCameraNear = 2;
directionalLight.shadowCameraFar = 200;
directionalLight.shadowCameraLeft = -50;
directionalLight.shadowCameraRight = 50;
directionalLight.shadowCameraTop = 50;
directionalLight.shadowCameraBottom = -50;

directionalLight.distance = 0;
directionalLight.intensity = 0.5;
directionalLight.shadowMapHeight = 1024;
directionalLight.shadowMapWidth = 1024;