import { ContextManager, Observable } from '@zcomponent/core';
import * as THREE from 'three';
import { Camera, CameraConstructorProps } from './Camera';
/**
 * The properties required to construct an OrthographicCamera.
 */
export interface OrthographicCameraConstructorProps extends CameraConstructorProps {
    /**
     * Camera frustum top plane.
     * @zprop
     * @zdefault 5
     */
    top: number;
    /**
     * Camera frustum left plane.
     * @zprop
     */
    left: number;
    /**
     * Camera frustum bottom plane.
     * @zprop
     * @zdefault -5
     */
    bottom: number;
    /**
     * Camera frustum right plane.
     * @zprop
     */
    right: number;
}
/**
 *
 * An orthographic camera component.
 *
 * In this projection mode, an object's size in the rendered image stays constant regardless of its distance from the camera.
 * This can be useful for rendering 2D scenes and UI elements, amongst other things.
 *
 * Root element: [THREE.OrthographicCamera](https://threejs.org/docs/index.html#api/en/cameras/OrthographicCamera)
 *
 * @zcomponent
 * @zgroup Cameras
 * @zicon camera
 * @ztag three/Object3D/Camera/OrthographicCamera
 * @zparents three/Object3D/Group/**
 */
export declare class OrthographicCamera extends Camera<THREE.OrthographicCamera> {
    /**
     * Constructs a new OrthographicCamera.
     * @param contextManager - The context manager.
     * @param props - The properties required to construct the OrthographicCamera.
     */
    constructor(contextManager: ContextManager, props: OrthographicCameraConstructorProps);
    /**
     * Camera frustum far plane.
     * @zprop
     * @zgroup PerspectiveCamera
     * @zgrouppriority 20
     * @zdefault 2000
     */
    far: Observable<number, never>;
    /**
     * Camera frustum near plane.
     * @zprop
     * @zgroup PerspectiveCamera
     * @zgrouppriority 20
     * @zdefault 0.1
     */
    near: Observable<number, never>;
    /**
     * An observable for getting or setting the zoom factor of the camera.
     *
     * Default is 1.
     * @zprop
     * @zgroup PerspectiveCamera
     * @zgrouppriority 20
     * @zdefault 1
     */
    zoom: Observable<number, never>;
}