import { ContextManager, ConstructorProps } from '@zcomponent/core';
import { Group } from '../Group';
/**
 * CameraTransform positions itself directly in front of the active camera each frame. It's great for user interface elements that should appear on the screen (rather than in the scene).
 *
 * Root element: [THREE.Group](https://threejs.org/docs/index.html?q=Grou#api/en/objects/Group)
 *
 * @zcomponent
 * @ztag three/Object3D/Group/CameraTransform
 * @zparents three/Object3D/Group/**
 * @zgroup Transforms
 * @zicon transform
 */
export declare class CameraTransform extends Group {
    /**
     * The horizontal alignment of the element.
     * @zprop
     * @zgroup CameraTransform
     * @zgrouppriority 20
     * @zdefault center
     */
    horizontalAnchor: HorizontalAlignment;
    /**
     * The vertical alignment of the element.
     * @zprop
     * @zgroup CameraTransform
     * @zgrouppriority 20
     * @zdefault center
     */
    verticalAnchor: VerticalAlignment;
    /**
     * The camera to lock the element to.
     * @zprop
     * @zgroup CameraTransform
     * @zgrouppriority 20
     * @zvalues nodeids three/Object3D/Camera/**
     */
    lockToCamera: string | undefined;
    /**
     * @zprop
     * @zdefault 0.2
     * @zgroup Transform
     * @zgrouppriority 10
     */
    depth: number;
    /** @zprop
     * @zdefault 0.1
     * @zgroup Transform
     * @zgrouppriority 10
     */
    contentScale: number;
    /**
     * Creates a CameraTransform component.
     * @param mgr - The context manager.
     * @param props - The constructor properties.
     */
    constructor(mgr: ContextManager, props: ConstructorProps);
    private _update;
    /** @zignore */
    position: import("@zcomponent/core").Observable<[x: number, y: number, z: number], never>;
    /** @zignore */
    scale: import("@zcomponent/core").Observable<[x: number, y: number, z: number], never>;
    /** @zignore */
    rotation: import("@zcomponent/core").Observable<[x: number, y: number, z: number], never>;
}
/**
 * Enum for specifying horizontal alignment options.
 * Represents possible horizontal positions for aligning elements or content.
 */
export declare enum HorizontalAlignment {
    /**
     * Aligns content to the left side.
     */
    'left' = "left",
    /**
     * Aligns content to the left side, but after any notches and camera cutouts.
     */
    'leftSafe' = "leftSafe",
    /**
     * Aligns content to the center horizontally.
     */
    'center' = "center",
    /**
     * Aligns content to the right side.
     */
    'right' = "right",
    /**
     * Aligns content to the right side, but before any notches and camera cutouts.
     */
    'rightSafe' = "rightSafe"
}
/**
 * Enum for specifying vertical alignment options.
 * Represents possible vertical positions for aligning elements or content.
 */
export declare enum VerticalAlignment {
    /**
     * Aligns content to the top.
     */
    'top' = "top",
    /**
     * Aligns content to the top, but below notches and camera cutouts.
     */
    'topSafe' = "topSafe",
    /**
     * Aligns content to the center vertically.
     */
    'center' = "center",
    /**
     * Aligns content to the bottom.
     */
    'bottom' = "bottom",
    /**
     * Aligns content to the bottom, but above home indicators and other system UI.
     */
    'bottomSafe' = "bottomSafe"
}