/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
import { quat, vec3 } from "gl-matrix";
import { CameraBase } from "./camera.js";
export declare class OrbitCamera extends CameraBase {
    getTwist(value: quat): void;
    setTwist(value: quat, isSmooth: boolean): void;
    twist(angle: number, x: number, y: number): void;
    protected _twist(axis: vec3, angle: number): void;
    rotate(translationDelta: vec3): void;
}