gis-tools-ts/dist/geometry/tools/polys/intersections.d.ts

A collection of geospatial tools primarily designed for WGS84, Web Mercator, and S2.

import type { IntersectionOfSegmentsRobust, MValue, Properties, VectorFeatures, VectorMultiPolygon, VectorMultiPolygonGeometry, VectorPoint } from '../../../index.js';
/** A segment in a polygon */
export interface Segment {
    id: number;
    polyIndex: number;
    ringIndex: number;
    from: number;
    to: number;
}
/** An intersection of two segments */
export interface Intersection<D extends MValue = Properties> {
    segment1: Segment;
    segment2: Segment;
    point: VectorPoint<D>;
    u: number;
    t: number;
}
/** Local Intersection to a [polyIndex][ringIndex] */
export interface RingIntersection<D extends MValue = Properties> {
    from: number;
    to: number;
    point: VectorPoint<D>;
    t: number;
    tVec: VectorPoint<D>;
    tAngle: number;
}
/** Intersection Lookup for mapped by polyIndex and ringIndex */
export declare class RingIntersectionLookup<D extends MValue = Properties> {
    /** [polyIndex][ringIndex] -> Intersections */
    store: Map<number, Map<number, RingIntersection<D>[]>>;
    get(polyIndex: number, ringIndex: number): RingIntersection<D>[];
    set(polyIndex: number, ringIndex: number, int: RingIntersection<D>): void;
}
/**
 * Find the intersection of a collection of polygons
 * @param polygons - the collection of polygons
 * @param includeSelfIntersections - if true, include self intersections
 * @returns - found intersections
 */
export declare function polygonsIntersections<M = Record<string, unknown>, D extends MValue = Properties, P extends Properties = Properties>(polygons: VectorMultiPolygon<D> | VectorMultiPolygonGeometry<D> | VectorFeatures<M, D, P, VectorMultiPolygonGeometry<D>>, includeSelfIntersections?: boolean): Intersection<D>[];
/**
 * Run through the vectorPolygons and Builds the ring intersection lookup
 * @param vectorPolygons - the collection of polygons
 * @param segmentFilter -  the function to filter the segments, default ignores self intersections
 * @returns - the ring intersection lookup for all rings in the multipolygon collection
 */
export declare function polygonsIntersectionsLookup<D extends MValue = Properties>(vectorPolygons: VectorMultiPolygon<D>, segmentFilter?: (seg1: Segment) => {
    (seg2: Segment): boolean;
}): RingIntersectionLookup<D>;
/**
 * Build all segments
 * @param vectorPolygons - the collection of polygons
 * @returns - the collection of segments
 */
export declare function buildPolygonSegments<D extends MValue = Properties>(vectorPolygons: VectorMultiPolygon<D>): Segment[];
/**
 * Find the intersection of two segments if it exists
 * @param vectorPolygons - the collection of polygons
 * @param segment1 - the first segment
 * @param segment2 - the second segment
 * @returns - the intersection if it exists. Undefined otherwise.
 */
export declare function findPolygonIntersections<D extends MValue = Properties>(vectorPolygons: VectorMultiPolygon<D>, segment1: Segment, segment2: Segment): IntersectionOfSegmentsRobust<D> | undefined;
/**
 * Given a ring's of intersections, clean them up
 * @param intersections - a collection of intersections to clean up
 * @returns - the cleaned up intersections
 */
export declare function cleanIntersections<D extends MValue = Properties>(intersections: RingIntersection<D>[]): RingIntersection<D>[];
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