import type { IframeMessenger } from "../iframe-messenger.js";
/** Vector in 3D space */
export type Vec3 = {
    x: number;
    y: number;
    z: number;
};
/** Volume created by extruding a polygon */
export type ExtrudedPolygon = {
    /** Polygon which defines the footprint of the volume */
    coordinates: Vec3[];
    /** Height of the volume */
    height: number;
};
export type Line = {
    /** Vertices along the line */
    coordinates: Vec3[];
    /** Whether or not the line is closed, i.e. starts and ends at the same point.  */
    close: boolean;
};
/**
 * Enable design tools supplied by the host app.
 *
 * @remarks
 * Available via {@link index.EmbeddedViewSdk.designTool | EmbeddedViewSdk.designTool}.
 */
export declare class DesignToolApi {
    #private;
    /** @hidden */
    constructor(iframeMessenger: IframeMessenger);
    /**
     * Activate tool for creating a point by clicking in the 3D scene.
     *
     * Does not return until the user has selected a point or cancelled the operation (by clicking ESC).
     *
     * @returns The selected point, or `undefined` if the user cancelled the operation.
     *
     * @example
     * const point = await Forma.designTool.getPoint();
     */
    getPoint(): Promise<Vec3 | undefined>;
    /**
     * Activate tools for creating a polygon.
     *
     * There are several available tools for creating polygons:
     * 1. "free-form": Click repeatedly in the 3D scene to create a polygon with any number of vertices.
     * 2. "rectangle": Click two points to define the first side of a rectangle, and then a third point along a 90 degree angle to define the second side.
     * 3. "circle": Click a centre and then a point on the circumference to create a circle.
     * 4. "pick": Select an existing shape in the 3D scene and use it as the basis for a new polygon.
     *
     * Does not return until the user has created a polygon or cancelled the operation (by clicking ESC).
     *
     * @returns The created polygon, or `undefined` if the user cancelled the operation.
     *
     * @example
     * const polygon = await Forma.designTool.getPolygon();
     */
    getPolygon(): Promise<Vec3[] | undefined>;
    /**
     * Activate tool for creating an extruded polygon.
     *
     * See {@link getPolygon} for available tools for creating polygons.
     * Once a polygon has been created, choose the height of the extrusion by clicking a final time.
     *
     * Does not return until the user has created an extruded polygon or cancelled the operation (by clicking ESC).
     *
     * @returns The created extruded polygon, or `undefined` if the user cancelled the operation.
     *
     * @example
     * const extrudedPolygon = await Forma.designTool.getExtrudedPolygon();
     */
    getExtrudedPolygon(): Promise<ExtrudedPolygon | undefined>;
    /**
     * Activate tool for creating a line.
     *
     * Click repeatedly in the 3D scene to create a line with any number of vertices.
     *
     * Does not return until the user has created a line or cancelled the operation (by clicking ESC).
     *
     * @returns The created Line, or `undefined` if the user cancelled the operation.
     *
     * @example
     * const line = await Forma.designTool.getLine();
     */
    getLine(): Promise<Line | undefined>;
    /**
     * Subscribe to the 'start' event for edits with the drawing tools.
     *
     * @example
     * const { unsubscribe } = await Forma.designTool.onEditStart(() => {
     *  console.log('start event')
     * });
     *
     * @param callback event handler to be called when editing starts
     * @returns { unsubscribe: () => void } object with an `unsubscribe` method to stop listening
     */
    onEditStart(callback: () => void): Promise<{
        unsubscribe: () => void;
    }>;
    /**
     * Subscribe to the 'end' event for edits with the drawing tools.
     *
     * @example
     * const { unsubscribe } = await Forma.designTool.onEditEnd(() => {
     *  console.log('end event')
     * });
     *
     * @param callback event handler to be called when editing ends
     * @returns { unsubscribe: () => void } object with an `unsubscribe` method to stop listening
     */
    onEditEnd(callback: () => void): Promise<{
        unsubscribe: () => void;
    }>;
}