import { vec3 } from "gl-matrix";
import { Color } from "./Color";
/**
 * 太阳光，使用平行光模拟
 *  @category 模型
 */
export declare class Light {
    private _theta;
    /**
     * 入射角度和z轴角度
     */
    get theta(): number;
    set theta(value: number);
    private _phi;
    /**
     * 入射角度和x轴角度
     */
    get phi(): number;
    set phi(value: number);
    /**
     * @internal
     */
    __changed: boolean;
    /**
     * 光照颜色
     */
    color: Color;
    /**
     * @internal
     */
    __lightDirection: vec3;
    private xAxis;
    private zAxis;
    /**
     * 不要调用
     */
    constructor();
    private setLightDirection;
}