x5-geometry/dist/x5sub.d.ts

Geometry and word processing utilities for XNet

import { Point, Triangle } from './types';
/**
 * Tests if a point is inside a hexagon and returns the subdivision indices.
 * @param point - The point to test
 * @param hexVertices - Six vertices of the hex in right-hand rule order
 * @returns List of indices (e.g., [0, 1, 7, 31]) if inside, false if outside
 */
export declare function getHexSubdivisionIndices(point: Point, hexVertices: Point[]): number[] | false;
export declare function hexIndexToIndexArray(hexIndex: number): number[];
export declare function hexIndexToVertices(hexIndex: number, hexVertices: Point[]): Point[];
export declare function reorderVerticies(hexVertices: Point[]): Point[];
/**
 * Subdivides a hexagon into 6 triangles by connecting the centroid to each vertex.
 * @param hexVertices - Six vertices in right-hand rule order.
 * @returns Object containing vertices and triangles
 */
export declare function subdivideHexToTriangles(hexVertices: Point[]): Triangle;
/**
 * Subdivides a triangle into 4 smaller triangles.
 * @param triangleVertices - Three vertices of the triangle.
 * @returns Object containing vertices and triangles
 */
export declare function subdivideTriangle(triangleVertices: Point[]): Triangle;
/**
 * Determines if a point is inside a triangle
 * @param point - The point to test
 * @param v1 - First vertex of the triangle
 * @param v2 - Second vertex of the triangle
 * @param v3 - Third vertex of the triangle
 * @param includeBoundary - Whether to include points on the boundary
 * @returns True if the point is inside the triangle, false otherwise
 */
export declare function isPointInsideTriangle(point: Point, v1: Point, v2: Point, v3: Point, includeBoundary?: boolean): boolean;
export declare function sign(p1: Point, p2: Point, p3: Point): number;