WebCAD/__test__/Polyline/PointInPolyline.test.ts

import { Vector2, Vector3 } from 'three';

import { IsPointInPolyLine } from '../../src/DatabaseServices/PointInPolyline';
import { Polyline } from '../../src/DatabaseServices/Polyline';
import { CADFile } from '../../src/DatabaseServices/CADFile';


test('点在多段线内', () =>
{

    let pl = new Polyline([
        {
            pt: new Vector2(0, 0),
            bul: 0
        },
        {
            pt: new Vector2(10, 0),
            bul: 0
        },
        {
            pt: new Vector2(10, 10),
            bul: 0
        },
        {
            pt: new Vector2(8, 10),
            bul: 0
        },
        {
            pt: new Vector2(8, 5),
            bul: 0
        },
        {
            pt: new Vector2(4, 5),
            bul: 0
        },
        {
            pt: new Vector2(4, 10),
            bul: 0
        },
        {
            pt: new Vector2(0, 10),
            bul: 0
        },
    ]);

    pl.CloseMark = true;

    let bIn = IsPointInPolyLine(pl, new Vector3(8, 3));//?

    expect(bIn).toBeTruthy();
});

describe("", () =>
{
    test('退化', () =>
    {
        let pl = new Polyline(
            [
                {
                    pt: new Vector2(0, 0),
                    bul: 0
                },
                {
                    pt: new Vector2(10, 0),
                    bul: 0
                },
                {
                    pt: new Vector2(5, 5),
                    bul: 0
                },
            ])

        pl.CloseMark = true;

        expect(IsPointInPolyLine(pl, new Vector3(5, 2))).toBeTruthy();
    });

    test('退化2', () =>
    {
        //右边中间 <
        let pl = new Polyline(
            [
                {
                    pt: new Vector2(0, 0),
                    bul: 0
                },
                {
                    pt: new Vector2(10, 0),
                    bul: 0
                },
                {
                    pt: new Vector2(5, 5),
                    bul: 0
                },
                {
                    pt: new Vector2(10, 10),
                    bul: 0
                },
                {
                    pt: new Vector2(0, 10),
                    bul: 0
                },
            ])

        pl.CloseMark = true;

        expect(IsPointInPolyLine(pl, new Vector3(5, 2))).toBeTruthy();
    });


    test('左边中间', () =>
    {
        //左边中间
        let pl = new Polyline([
            {
                pt: new Vector2(0, 0),
                bul: 0
            },
            {
                pt: new Vector2(10, 0),
                bul: 0
            },
            {
                pt: new Vector2(10, 10),
                bul: 0
            },
            {
                pt: new Vector2(0, 10),
                bul: 0
            },
            {
                pt: new Vector2(0, 8),
                bul: 0
            },

            {
                pt: new Vector2(5, 5),
                bul: 0
            }]
        )
        pl.CloseMark = true;

        expect(IsPointInPolyLine(pl, new Vector3(5, 2))).toBeTruthy();
    });


    test('点在曲线外精度问题', () =>
    {
        let plData = [["Polyline", 1, 1, 4317, false, 3, -1,
            [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1],
            2, 5,
            [-3, 3.6739403974420594e-16], 0.9999999999999999,
            [3, 3.6739403974420594e-16], 0, [3, 10], 0.9999999999999999,
            [-3, 10], 0, [-3, -3.6739403974420594e-16], 0,
            false]];

        let f = new CADFile();
        f.Data = plData;
        let pl = f.ReadObject(undefined) as Polyline;


        let p = new Vector3(-3, -0.16000000000000014, 0);


        expect(pl.PtInCurve(p)).toBeFalsy();
    });

    test('精度过低导致的错误', () =>
    {
        let f = new CADFile();
        f.Data =
            [1, ["Polyline", 1, 1, 18237, false, 2, -1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0.7938671363300003, 0.39666461398798525, 0, 1], 2, 5, [12.414545456418505, 8.796498405316765], 0, [12.015990240675425, 8.743859037199755], 0, [12.23362472371057, 8.552710046188702], 0, [12.233990240675425, 8.552758322014249], 0, [12.414545456418505, 8.796498405316765], 0, false]]

        let p = new Vector3().fromArray([13.027857377005425, 8.947146562082409, 0]);

        f.Read();
        let pl = f.ReadObject() as Polyline;

        pl.PtInCurve(p);//?
    });

})