import { ConnectionPoint, Point, SnapResult, WhiteboardElement } from '../types';
import * as i0 from "@angular/core";
/**
 * Computes connection points on shapes and provides snap-to-shape logic
 * for arrow endpoints during drawing and reconnecting.
 */
export declare class ConnectionPointsService {
    /**
     * Get all named connection points for a given element.
     *
     * Connection points are returned in **world coordinates** (accounting for
     * the element's position offset).
     */
    getConnectionPoints(element: WhiteboardElement): ConnectionPoint[];
    /**
     * Find the closest connection point on any connectable element near the given position.
     *
     * @param position  - current pointer world coordinates
     * @param elements  - all elements to consider
     * @param excludeIds - element IDs to exclude (e.g. the arrow itself)
     * @param snapRadius - maximum snapping distance in canvas px
     */
    findSnapTarget(position: Point, elements: WhiteboardElement[], excludeIds: Set<string>, snapRadius?: number): SnapResult | null;
    /**
     * Compute the point on a shape's edge where a bound arrow should connect,
     * given a binding and the current state of the target element.
     */
    resolveBindingPoint(element: WhiteboardElement, pointId: string | null, fallbackDirection: Point, gap: number): Point;
    private getRectangleConnectionPoints;
    private getEllipseConnectionPoints;
    private getImageConnectionPoints;
    private getTextConnectionPoints;
    /** Fallback: bounding-box-based connection points */
    private getBoundsConnectionPoints;
    /**
     * Get the closest point on an element's edge to a given world coordinate.
     */
    private getClosestEdgePoint;
    private closestRectEdgePoint;
    private closestEllipseEdgePoint;
    private closestBoundsEdgePoint;
    getElementCenter(element: WhiteboardElement): Point;
    isConnectable(element: WhiteboardElement): boolean;
    private isNearBounds;
    private distance;
    static ɵfac: i0.ɵɵFactoryDeclaration<ConnectionPointsService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ConnectionPointsService>;
}