import { IPlugin, Viewer } from "../../viewer";
export declare class NavigationHome implements IPlugin {
    /**
     * This is constructor of the Home plugin for {@link Viewer xBIM Viewer}. It gets optional Image object as an argument. If no image
     * is specified there is a default one (which is not very prety).
     * @name xNavigationHome
     * @constructor
     * @classdesc This is a plugin for Viewer which renders interactive home button. It is customizable in terms of alpha
     * behaviour and its position on the viewer canvas as well as definition of the distance and view direction. Use of plugin:
     *
     *     var home = new xNavigationHome();
     *     viewer.addPlugin(home);
     *
     *
     * @param {Image} [image = null] - optional image to be used for a button.
    */
    constructor(image?: HTMLImageElement);
    private _image;
    private _viewer;
    /**
    * Size of the the home button relative to the size of viewer canvas. This has to be a positive number between [0,1] Default value is 0.2.
    * @member {Number} xNavigationHome#ratio
    */
    ratio: number;
    /**
    * Position of the the home button relative to the size of viewer canvas. This has to be a positive number between [0,1] Default value is 0.05.
    * @member {Number} xNavigationHome#placementX
    */
    placementX: number;
    /**
    * Position of the the home button relative to the size of viewer canvas. This has to be a positive number between [0,1] Default value is 0.05.
    * @member {Number} xNavigationHome#placementY
    */
    placementY: number;
    /**
    * Navigation home button has two transparency states. One is when user hovers over the cube and the second when the cursor is anywhere else.
    * This is for the hovering shate and it should be a positive number between [0,1]. If the value is less than 1 cube will be semitransparent
    * when user hovers over. Default value is 1.0.
    * @member {Number} xNavigationHome#activeAlpha
    */
    activeAlpha: number;
    /**
    * Navigation home button has two transparency states. One is when user hovers over the cube and the second when the cursor is anywhere else.
    * This is for the non-hovering shate and it should be a positive number between [0,1]. If the value is less than 1 cube will be semitransparent
    * when user is not hovering over. Default value is 0.3.
    * @member {Number} xNavigationHome#passiveAlpha
    */
    passiveAlpha: number;
    /**
    * Distance to be used for a home view. If null, default viewer distance for a full extent mode is used. Default value: null
    * @member {Number} xNavigationHome#distance
    */
    distance: number;
    /**
    * View direction to be used for a home view. Default value: [1, 1, -1]
    * @member {Number} xNavigationHome#viewDirection
    */
    viewDirection: number[];
    init(xviewer: Viewer): void;
    private _adjust;
    onBeforeDraw(): void;
    onBeforePick(id: number): boolean;
    onAfterDraw(): void;
    onBeforeDrawId(): void;
    onAfterDrawId(): void;
    onBeforeGetId(id: number): boolean;
    draw(): void;
}