new HemisphereLight(param) thing/src/objects/HemisphereLight.js, line 32 构造函数 Parameters: Name Type Description param object 参数对象。 Properties Name Type Description color number | string | Array.<number> 光的颜色 groundColor number | string | Array.<number> 地面颜色 intensity number 光的强度 Members groundColor :number|string|Array.<number> thing/src/objects/HemisphereLight.js, line 82 获取/设置 地面颜色