WebCAD/__test__/Line/line.test.ts

import { Line } from "../../src/DatabaseServices/Line";
import { Vector3 } from "three";


test('直线参数', () =>
{

    let l = new Line(new Vector3(0, 0, 0), new Vector3(5, 5, 0));

    expect(l.GetParamAtPoint(new Vector3(0, 0, 0))).toBe(0);

    expect(l.GetParamAtPoint(new Vector3(5, 5, 0))).toBe(1);

    expect(l.GetParamAtPoint(new Vector3(-5, -5, 0))).toBe(-1);

    expect(l.GetParamAtPoint(new Vector3(10, 10, 0))).toBe(2);


    expect(l.GetParamAtPoint(new Vector3(11, 10, 0))).toBe(NaN);
});


test('0长度直线,参数', () =>
{

    let l = new Line(new Vector3(), new Vector3());

    expect(l.GetParamAtPoint(new Vector3(0, 0, 0))).toBe(0);

    expect(l.GetParamAtPoint(new Vector3(1, 0, 0))).toBe(NaN);
});

test("直线的切割1", () =>
{
    let l = new Line(new Vector3(0, 0, 0), new Vector3(5, 0, 0));
    expect(l.GetSplitCurves(0.5)[0].EndPoint).toMatchObject({ 'x': 2.5, 'y': 0, 'z': 0 });
    expect(l.GetSplitCurves(0.5)[1].EndPoint).toMatchObject({ 'x': 5, 'y': 0, 'z': 0 });

});
test("直线的切割2", () =>
{
    let l = new Line(new Vector3(0, 0, 0), new Vector3(5, 0, 0));
    expect(l.GetSplitCurves([0.5, 0.2, 0.8])[0].EndPoint).toMatchObject({ 'x': 1, 'y': 0, 'z': 0 });
    expect(l.GetSplitCurves([0.2, 0.5, 0.8])[1].StartPoint).toMatchObject({ 'x': 1, 'y': 0, 'z': 0 });
    expect(l.GetSplitCurves([0.2, 0.5, 0.8]).length).toBe(4);
});
test("直线延伸-反向", () =>
{
    let l = new Line(new Vector3(0, 0, 0), new Vector3(5, 0, 0));
    l.Extend(-1);
    expect(l.StartPoint).toMatchObject({ 'x': -5, 'y': 0, 'z': 0 });

});
test("直线延伸-正向", () =>
{
    let l = new Line(new Vector3(0, 0, 0), new Vector3(5, 0, 0));
    l.Extend(2);
    expect(l.EndPoint).toMatchObject({ 'x': 10, 'y': 0, 'z': 0 });
});