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Unify on GenericPoint type

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Signed-off-by: Mark Tolmacs <mark@lazycat.hu>
This commit is contained in:
Mark Tolmacs 2024-09-24 18:38:29 +02:00
parent 0c47bd0004
commit 017047d15e
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7 changed files with 68 additions and 115 deletions
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26
packages/math/polygon.ts
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@ -1,23 +1,17 @@
import { pointsEqual } from "./point";
import { lineSegment, pointOnLineSegment } from "./segment";
import type { GlobalPoint, LocalPoint, Polygon, ViewportPoint } from "./types";
import type { GenericPoint, Polygon } from "./types";
import { PRECISION } from "./utils";
export function polygon<Point extends GlobalPoint | LocalPoint>(
...points: Point[]
) {
export function polygon<Point extends GenericPoint>(...points: Point[]) {
return polygonClose(points) as Polygon<Point>;
}
export function polygonFromPoints<
Point extends GlobalPoint | LocalPoint | ViewportPoint,
>(points: Point[]) {
export function polygonFromPoints<Point extends GenericPoint>(points: Point[]) {
return polygonClose(points) as Polygon<Point>;
}
export const polygonIncludesPoint = <
Point extends LocalPoint | GlobalPoint | ViewportPoint,
>(
export const polygonIncludesPoint = <Point extends GenericPoint>(
point: Point,
polygon: Polygon<Point>,
) => {
@ -42,9 +36,7 @@ export const polygonIncludesPoint = <
return inside;
};
export const pointOnPolygon = <
Point extends LocalPoint | GlobalPoint | ViewportPoint,
>(
export const pointOnPolygon = <Point extends GenericPoint>(
p: Point,
poly: Polygon<Point>,
threshold = PRECISION,
@ -61,16 +53,12 @@ export const pointOnPolygon = <
return on;
};
function polygonClose<Point extends LocalPoint | GlobalPoint | ViewportPoint>(
polygon: Point[],
) {
function polygonClose<Point extends GenericPoint>(polygon: Point[]) {
return polygonIsClosed(polygon)
? polygon
: ([...polygon, polygon[0]] as Polygon<Point>);
}
function polygonIsClosed<
Point extends LocalPoint | GlobalPoint | ViewportPoint,
>(polygon: Point[]) {
function polygonIsClosed<Point extends GenericPoint>(polygon: Point[]) {
return pointsEqual(polygon[0], polygon[polygon.length - 1]);
}