@thi.ng/geom-poly-utils/offset-convex.d.ts

2D polygon/polyline analysis & processing utilities

import type { ReadonlyVec, Vec } from "@thi.ng/vectors";
/**
 * Performs naive polygon offsetting, i.e. moving vertices along their bisectors
 * by given `dist`.
 *
 * @remakrs
 * If `points` are in CCW order (assuming Y-up), a positive `dist` will offset
 * outward, and `dist` negative will inset.
 *
 * @example
 * ```ts tangle:../export/offset-convex.ts
 * import { offsetConvex } from "@thi.ng/geom-poly-utils";
 *
 * console.log(offsetConvex([[0,0], [100,0], [50,100]], 5));
 * // [
 * //  [ -4.253, -2.629 ],
 * //  [ 104.286, -2.575 ],
 * //  [ 49.999, 104.999 ]
 * // ]
 * ```
 *
 * @param points
 * @param dist
 */
export declare const offsetConvex: (points: ReadonlyVec[], dist: number) => Vec<number>[];
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