import { Vector2, Matrix3 } from '@daign/math';
import { Application } from '../application';
import { Group } from '../basic-elements';
import { StyledGraphicNode } from '../styledGraphicNode';
import { ControlObject } from './controlObject';
/**
 * Interactive control point for control objects.
 */
export declare class ControlPoint extends Group {
    readonly targetPoint: Vector2;
    private readonly targetTransformation;
    readonly application: Application;
    readonly controlObject: ControlObject;
    private controlIndex;
    private offset;
    /**
     * Getter for the center position.
     */
    get center(): Vector2;
    /**
     * Setter for the center position.
     */
    set center(position: Vector2);
    /**
     * Constructor.
     * @param targetPoint - The point coordinates to display and modify.
     * @param targetTransformation - The transformation matrix of the control object.
     * @param application - The corresponding application.
     * @param controlObject - The corresponding control object.
     * @param controlIndex - The index of the point in the points array of the control object.
     * @param controlShape - The shape to display for a control point. Optional.
     */
    constructor(targetPoint: Vector2, targetTransformation: Matrix3, application: Application, controlObject: ControlObject, controlIndex: number, controlShape?: StyledGraphicNode | null);
    /**
     * Calculate the offset transformation resulting from the center point position.
     */
    private calculateOffset;
    /**
     * Save a snapshot copy of the current center position.
     */
    snap(): void;
    /**
     * Apply a translation delta to the last snapshot of the center.
     * @param delta - The translation delta.
     */
    drag(delta: Vector2): void;
}