smig/excalidraw
1
0
Fork 0
mirror of https://github.com/excalidraw/excalidraw.git synced 2025-05-03 10:00:07 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Ellipse refactor

Browse source 
Signed-off-by: Mark Tolmacs <mark@lazycat.hu>
This commit is contained in:
Mark Tolmacs 2024-09-24 19:12:27 +02:00
parent 017047d15e
commit 3efa8735ef
No known key found for this signature in database
10 changed files with 301 additions and 217 deletions
Download patch file Download diff file Expand all files Collapse all files

45
packages/math/ellipse.test.ts Normal file
View file

@ -0,0 +1,45 @@
import { radians } from "./angle";
import { pointInEllipse, pointOnEllipse } from "./ellipse";
import { point } from "./point";
import type { Ellipse, GlobalPoint } from "./types";
describe("point and ellipse", () => {
const ellipse: Ellipse<GlobalPoint> = {
center: point(0, 0),
angle: radians(0),
halfWidth: 2,
halfHeight: 1,
};
it("point on ellipse", () => {
[point(0, 1), point(0, -1), point(2, 0), point(-2, 0)].forEach((p) => {
expect(pointOnEllipse(p, ellipse)).toBe(true);
});
expect(pointOnEllipse(point(-1.4, 0.7), ellipse, 0.1)).toBe(true);
expect(pointOnEllipse(point(-1.4, 0.71), ellipse, 0.01)).toBe(true);
expect(pointOnEllipse(point(1.4, 0.7), ellipse, 0.1)).toBe(true);
expect(pointOnEllipse(point(1.4, 0.71), ellipse, 0.01)).toBe(true);
expect(pointOnEllipse(point(1, -0.86), ellipse, 0.1)).toBe(true);
expect(pointOnEllipse(point(1, -0.86), ellipse, 0.01)).toBe(true);
expect(pointOnEllipse(point(-1, -0.86), ellipse, 0.1)).toBe(true);
expect(pointOnEllipse(point(-1, -0.86), ellipse, 0.01)).toBe(true);
expect(pointOnEllipse(point(-1, 0.8), ellipse)).toBe(false);
expect(pointOnEllipse(point(1, -0.8), ellipse)).toBe(false);
});
it("point in ellipse", () => {
[point(0, 1), point(0, -1), point(2, 0), point(-2, 0)].forEach((p) => {
expect(pointInEllipse(p, ellipse)).toBe(true);
});
expect(pointInEllipse(point(-1, 0.8), ellipse)).toBe(true);
expect(pointInEllipse(point(1, -0.8), ellipse)).toBe(true);
expect(pointInEllipse(point(-1, 1), ellipse)).toBe(false);
expect(pointInEllipse(point(-1.4, 0.8), ellipse)).toBe(false);
});
});