import { PipeTransform } from '@angular/core';
import { ArrowElement } from '../elements';
import * as i0 from "@angular/core";
export interface ArrowheadRenderItem {
    /** SVG path `d` attribute */
    d: string;
    /** Whether the shape should be filled (true) or stroked outline only (false) */
    filled: boolean;
    /** SVG transform for positioning, rotation, and scaling */
    transform: string;
    /** For stroked heads: stroke-width divided by the scale factor so the visual weight matches the line body */
    strokeWidth?: number;
}
export interface ArrowRenderData {
    /** Adjusted line start (pulled back if startHead present) */
    lineX1: number;
    lineY1: number;
    /** Adjusted line end (pulled back if endHead present) */
    lineX2: number;
    lineY2: number;
    /** SVG path items for each head */
    heads: ArrowheadRenderItem[];
    /** SVG `d` attribute for the arrow body (line or curve) */
    pathD: string;
    /** Whether this is a curved arrow (use <path> instead of <line>) */
    isCurved: boolean;
}
export declare class ArrowheadPipe implements PipeTransform {
    transform(element: ArrowElement): ArrowRenderData;
    private buildHead;
    /** Build an SVG transform: translate to endpoint, rotate to angle, then scale */
    private buildTransform;
    static ɵfac: i0.ɵɵFactoryDeclaration<ArrowheadPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<ArrowheadPipe, "arrowhead", true>;
}