import { mat4, vec3 } from "gl-matrix";
import { _Scene } from "../View/_scene";
export declare class Camera {
    __eye_step: number;
    private _eye;
    get eye(): vec3;
    private _center;
    get center(): vec3;
    private _up;
    get up(): vec3;
    private _right;
    get right(): vec3;
    clientHeight: number;
    clientWidth: number;
    get front(): vec3;
    radius: number;
    theta: number;
    phi: number;
    movement: vec3;
    factor: number;
    private _bias;
    get bias(): number;
    orthographic: boolean;
    min: vec3;
    max: vec3;
    private _near;
    get near(): number;
    private _far;
    get far(): number;
    __fovy: number;
    private _scene;
    constructor(scene: _Scene);
    reset(): void;
    getViewMatrix(): mat4;
    getEye(): vec3;
    getProjectMatrix(vm: mat4, cw: number, ch: number): mat4;
    getEyeDir(): vec3;
    private getEyeDirection;
    rotate(xrad: number, zrad: number): void;
    move(x: number, y: number): void;
    scale(fac: number): void;
    _get_rotation_center_movement(): void;
}