WebCAD/__test__/Interest/line.test.ts

import { Vector3 } from 'three';

import { Line } from '../../src/DatabaseServices/Entity/Line';
import { IntersectLineAndLine, IntersectOption } 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, IntersectOption.ExtendThis);
    expect(pts.length).toBe(0);

    pts = IntersectLineAndLine(l1, l2, IntersectOption.ExtendNone);
    expect(pts.length).toBe(0);

    pts = IntersectLineAndLine(l1, l2, IntersectOption.ExtendArg);
    expect(pts.length).toBe(0);

    pts = IntersectLineAndLine(l1, l2, IntersectOption.ExtendBoth);//?
    expect(pts.length).toBe(4);
});


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, IntersectOption.ExtendThis);
    expect(pts.length).toBe(1);

    pts = IntersectLineAndLine(l1, l2, IntersectOption.ExtendNone);
    expect(pts.length).toBe(1);

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

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


test('直线参数', () =>
{
    let l1 = new Line(new Vector3(0, 0, 0), new Vector3(5, 5, 0));
    expect(l1.GetClosestAtPoint(new Vector3(10, 10), false).param).toBe(1);
});