import { angleTo } from '../../src/Geometry/GeUtils';
import { Vector3 } from "three";
test('俯视图', () =>
{
    //逆时针
    let v = angleTo(new Vector3(1, 0, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 1)) //?
    expect(v).toEqual(Math.PI * 0.5)

    //顺时针
    let v2 = angleTo(new Vector3(0, 1, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1)) //?
    expect(v2).toEqual(Math.PI * -0.5)
});
test('仰视', () =>
{
    //顺时针
    let v = angleTo(new Vector3(1, 0, 0), new Vector3(0, 1, 0), new Vector3(0, 0, -1)) //?
    expect(v).toEqual(Math.PI * -0.5)
});

test('右视图', () =>
{
    let v = angleTo(new Vector3(0, 0, 1), new Vector3(0, 1, 0), new Vector3(1, 0, 0)) //?
    expect(v).toEqual(Math.PI * -0.5)

    v = angleTo(new Vector3(0, 1, 0), new Vector3(0, 0, 1), new Vector3(1, 0, 0)) //?
    expect(v).toEqual(Math.PI * 0.5)
});

test('0向量', () =>
{
    let v = angleTo(new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(1, 0, 0)) //?
    expect(v).toEqual(0)
});

test('变量补全', () =>
{
    let v = angleTo(new Vector3(1, 0, 0), new Vector3(0, 0, 1)) //?
    expect(v).toEqual(Math.PI * 0.5)
});