/** *********************************
 *  本模块导出一系列常量
 *  其他各模块代码中避免出现MagicNumber
 ************************************/
export var TIMESPAN_INSTANT = 50;
export var TIMESPAN_QUICK = 200;
export var TIMESPAN_FAST = 500;
export var TIMESPAN_SOON = 1000;
export var TIMESPAN_WHILE = 5000;
export var SHADOW_MAP_WIDTH = 512;
export var SHADOW_MAP_HEIGHT = 512;
export var GROUND_SIZE = 512;
export var GROUND_SIZE_SHADOW_AREA = 128;
export var WINDOW_DEVICE_PIXEL_RATIO = window.devicePixelRatio;
