WebCAD/__test__/Geometry/circle.test.ts

import { Vector3 } from 'three';
import { Circle } from '../../src/DatabaseServices/Entity/Circle';
import { equaln, equalv3 } from '../../src/Geometry/GeUtils';

test('圆参数', () =>
{

    let circle = new Circle(new Vector3(5, 0, 0), 5);

    circle.GetParamAtPoint(new Vector3(0, 0, 0));/*?*/
    expect(equaln(circle.GetParamAtPoint(new Vector3(0, 0, 0))/*?*/, 0.5)).toBeTruthy();

    expect(equaln(circle.GetParamAtPoint(new Vector3(5, 5, 0)), 0.25)).toBeTruthy();

    expect(equaln(circle.GetParamAtPoint(new Vector3(10, 0, 0)), 0)).toBeTruthy();

    expect(circle.GetParamAtPoint(new Vector3(-5, -5, 0))).toBe(NaN);

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

});

test('半径为0的圆,参数', () =>
{

    let circle = new Circle(new Vector3(), 0);

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

});

test("圆的切割1", () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);
    let cs = circle.GetSplitCurves(0.5);
    expect(cs.length).toBe(0);
});

test("圆的切割2", () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);

    let cs = circle.GetSplitCurves([0.5, 0.75, 0.25]);

    for (let c of cs)
    {
        expect(c.StartPoint).toMatchSnapshot();
        expect(c.EndPoint).toMatchSnapshot();
    }
});

test("由距离得到圆参数", () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);
    expect(equaln(circle.GetParamAtDist(0.5 * Math.PI * 5), 0.25)).toBeTruthy();
}
);
test("由距离得到对应点", () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);
    expect(equalv3(circle.GetPointAtDistance(0.5 * Math.PI * 5), new Vector3(5, 5, 0))).toBeTruthy();
}
);

test("由参数得到距离", () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);
    expect(equaln(circle.GetDistAtParam(0.5), Math.PI * 5)).toBeTruthy();
}
);
test("由点得到距离", () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);
    expect(equaln(circle.GetDistAtPoint(new Vector3(5, 5, 0)), 0.5 * Math.PI * 5)).toBeTruthy();
    expect(circle.GetDistAtPoint(new Vector3(10, 0, 0))).toBe(0);
}
);

test('圆偏移', () =>
{

    let circle = new Circle(new Vector3(5, 0, 0), 5);
    let arcs3 = circle.GetOffsetCurves(10);
    let arcs = circle.GetOffsetCurves(-3);

    arcs3[0].StartPoint; //?
    arcs3[0].EndPoint; //?

    arcs[0].StartPoint; //?
    arcs[0].EndPoint; //?
    // expect(arcs.length).toBe(1);
    // expect(arcs.length).toBe(Math.PI * 2);

    let newArc = arcs[0];
    expect(newArc.StartPoint).toMatchSnapshot();
    expect(newArc.EndPoint).toMatchSnapshot();

    let circle2 = new Circle(new Vector3(10, 0, 0), 10);
    let circles2 = circle2.GetOffsetCurves(-5)[0]; //?
    circles2.StartPoint; //?
    circles2.EndPoint; //?
    expect(circles2.StartPoint).toMatchSnapshot();
    expect(circles2.EndPoint).toMatchSnapshot();

    circles2 = circle2.GetOffsetCurves(10)[0]; //?
    circles2.StartPoint; //?
    circles2.EndPoint; //?
    expect(circles2.StartPoint).toMatchSnapshot();
    expect(circles2.EndPoint).toMatchSnapshot();

    expect(circles2.StartPoint).toMatchSnapshot();
    expect(circles2.EndPoint).toMatchSnapshot();
    circles2 = circle2.GetOffsetCurves(-5)[0]; //?
    circles2.StartPoint; //?
    circles2.EndPoint; //?
    expect(circles2.StartPoint).toMatchSnapshot();
    expect(circles2.EndPoint).toMatchSnapshot();
});

test('最近点', () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);

    expect(circle.GetClosestPointTo(new Vector3(-5, 0, 0), true)/*?*/).toMatchSnapshot();//0,0,0.
    expect(circle.GetClosestPointTo(new Vector3(8, 0, 0), true)/*?*/).toMatchSnapshot();//10,0,0.

});


test('最近点2', () =>
{
    let circle = new Circle(new Vector3(5, 0, 0), 5);
    let pt = circle.GetClosestPointTo(new Vector3(5), true);
    expect(pt).toMatchSnapshot();
});