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82 lines
2.3 KiB
TypeScript
82 lines
2.3 KiB
TypeScript
import { radians } from "./angle";
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import {
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arc,
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arcIncludesPoint,
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arcLineInterceptPoints,
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arcSegmentInterceptPoints,
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} from "./arc";
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import { line } from "./line";
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import { point } from "./point";
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import { segment } from "./segment";
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describe("point on arc", () => {
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it("should detect point on simple arc", () => {
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expect(
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arcIncludesPoint(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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point(0.92291667, 0.385),
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),
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).toBe(true);
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});
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it("should not detect point outside of a simple arc", () => {
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expect(
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arcIncludesPoint(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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point(-0.92291667, 0.385),
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),
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).toBe(false);
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});
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it("should not detect point with good angle but incorrect radius", () => {
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expect(
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arcIncludesPoint(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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point(-0.5, 0.5),
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),
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).toBe(false);
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});
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});
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describe("intersection", () => {
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it("should report correct interception point for segment", () => {
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expect(
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arcSegmentInterceptPoints(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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segment(point(2, 1), point(0, 0)),
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),
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).toEqual([point(0.894427190999916, 0.447213595499958)]);
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});
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it("should report both interception points when present for segment", () => {
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expect(
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arcSegmentInterceptPoints(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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segment(point(0.9, -2), point(0.9, 2)),
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),
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).toEqual([
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point(0.9, -0.4358898943540668),
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point(0.9, 0.4358898943540668),
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]);
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});
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it("should report correct interception point for line", () => {
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expect(
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arcLineInterceptPoints(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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line(point(2, 1), point(0, 0)),
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),
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).toEqual([point(0.894427190999916, 0.447213595499958)]);
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});
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it("should report both interception points when present for line", () => {
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expect(
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arcLineInterceptPoints(
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arc(point(0, 0), 1, radians(-Math.PI / 4), radians(Math.PI / 4)),
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line(point(0.9, -2), point(0.9, 2)),
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),
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).toEqual([
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point(0.9, 0.4358898943540668),
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point(0.9, -0.4358898943540668),
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]);
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});
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});
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