WebCAD/__test__/Polyline/Intersect.test.ts

import { Vector2 } from "three";
import { Polyline } from "../../src/DatabaseServices/Entity/Polyline";
import { IntersectOption } from "../../src/GraphicsSystem/IntersectWith";
describe("相交", () =>
{
    test("不相交曲线", () =>
    {
        let pl = new Polyline([
            {
                pt: new Vector2(37, 5),
                bul: -1.63
            },
            {
                pt: new Vector2(26.7, -4),
                bul: 0.32
            },
        ]);
        let p2 = new Polyline([
            {
                pt: new Vector2(26, -3),
                bul: 0.32
            },
            {
                pt: new Vector2(9.5, -8.2),
                bul: 2.01
            },
        ]);
        let pts = pl.IntersectWith(p2, IntersectOption.ExtendNone);
        expect(pts.length).toBe(0);
        let pts1 = pl.IntersectWith(p2, IntersectOption.ExtendBoth);
        expect(pts1.length).toBe(2);
        let pts2 = pl.IntersectWith(p2, IntersectOption.ExtendThis);
        expect(pts2.length).toBe(0);
        let pts3 = pl.IntersectWith(p2, IntersectOption.ExtendArg);
        expect(pts3.length).toBe(1);
    });
    test("相交曲线", () =>
    {
        let pl = new Polyline([
            {
                pt: new Vector2(0, 0),
                bul: 1
            },
            {
                pt: new Vector2(0, 5),
                bul: 0.32
            },
        ]);
        let p2 = new Polyline([
            {
                pt: new Vector2(-1, 0),
                bul: -1
            },
            {
                pt: new Vector2(4, 0),
                bul: 0
            },
        ]);
        let p3 = new Polyline([
            {
                pt: new Vector2(0, 0),
                bul: 0
            },
            {
                pt: new Vector2(3, 3),
                bul: 0
            },
        ]);
        let p4 = new Polyline([
            {
                pt: new Vector2(0, 0),
                bul: 0
            },
            {
                pt: new Vector2(1, 1),
                bul: 0
            },
        ]);
        let p5 = new Polyline([
            {
                pt: new Vector2(1, 0),
                bul: 0
            },
            {
                pt: new Vector2(1, 0.5),
                bul: 0
            },
        ]);
        let p6 = new Polyline([
            {
                pt: new Vector2(0, 0),
                bul: 0
            },
            {
                pt: new Vector2(3, 3),
                bul: 0
            },
        ]);
        let pts = pl.IntersectWith(p2, IntersectOption.ExtendNone);
        expect(pts.length).toBe(1);
        let pts1 = pl.IntersectWith(p2, IntersectOption.ExtendBoth);
        expect(pts1.length).toBe(2);
        let pts2 = pl.IntersectWith(p2, IntersectOption.ExtendThis);
        expect(pts2.length).toBe(2);
        let pts3 = pl.IntersectWith(p2, IntersectOption.ExtendArg);
        expect(pts3.length).toBe(1);
        let pts4 = pl.IntersectWith(p3, IntersectOption.ExtendNone);
        expect(pts).toMatchSnapshot();
        expect(pts4.length).toBe(2);
        let pts5 = pl.IntersectWith(p4, IntersectOption.ExtendNone);
        expect(pts5.length).toBe(1);
        let pts6 = pl.IntersectWith(p4, IntersectOption.ExtendArg);
        expect(pts6.length).toBe(2);
        let pts7 = p5.IntersectWith(p6, IntersectOption.ExtendThis);
        expect(pts7.length).toBe(1);
    });
});