WebCAD/__test__/Interest/line.test.ts

import { Line } from "../../src/DatabaseServices/Line";
import { Vector3 } from "three";
import { IntersectLineAndLine, Intersect } from "../../src/GraphicsSystem/IntersectWith"



test('直线相交,共线', () =>
{
    let l1 = new Line(new Vector3(0, 0, 0), new Vector3(5, 0, 0));

    let l2 = new Line(new Vector3(10, 0, 0), new Vector3(15, 0, 0));


    let pts = IntersectLineAndLine(l1, l2, Intersect.ExtendThis);
    expect(pts.length).toBe(0);

    pts = IntersectLineAndLine(l1, l2, Intersect.OnBothOperands);
    expect(pts.length).toBe(0);

    pts = IntersectLineAndLine(l1, l2, Intersect.ExtendArg);
    expect(pts.length).toBe(1);

    pts = IntersectLineAndLine(l1, l2, Intersect.ExtendBoth);
    expect(pts.length).toBe(1);
});


test('直线相交', () =>
{
    let l1 = new Line(new Vector3(0, 0, 0), new Vector3(5, 5, 0));
    let l2 = new Line(new Vector3(5, 0, 0), new Vector3(0, 5, 0));


    let pts = IntersectLineAndLine(l1, l2, Intersect.ExtendThis);
    expect(pts.length).toBe(1);

    pts = IntersectLineAndLine(l1, l2, Intersect.OnBothOperands);
    expect(pts.length).toBe(1);

    pts = IntersectLineAndLine(l1, l2, Intersect.ExtendArg);
    expect(pts.length).toBe(1);

    pts = IntersectLineAndLine(l1, l2, Intersect.ExtendBoth);
    expect(pts.length).toBe(1);
});