import * as THREE from 'three';
import { equaln, equalv3 } from '../../src/Geometry/GeUtils';
import { Orbit } from '../../src/Geometry/Orbit';

test("", () =>
{
    //构造一个控制类.
    let orb = new Orbit();

    let dir = new THREE.Vector3(0, 1, 0);

    orb.SetFromDirection(dir);

    expect(equaln(orb.RoX, 0)).toBe(true);
    expect(equaln(orb.theta, Math.PI * 0.5)).toBe(true);

    //试着还原
    orb.UpdateDirection(dir);
    expect(equalv3(dir, new THREE.Vector3(0, 1, 0))).toBe(true);

    //试试新的
    dir.set(1, 0, 0);
    orb.SetFromDirection(dir);
    expect(equaln(orb.RoX, 0)).toBe(true);
    expect(equaln(orb.theta, 0)).toBe(true);

    //试着还原
    orb.UpdateDirection(dir);
    expect(equalv3(dir, new THREE.Vector3(1, 0, 0))).toBe(true);

    //试试新的
    dir.set(0.5, 0.5, 0).normalize();

    let dirc = dir.clone();
    orb.SetFromDirection(dir);

    //试着还原
    orb.UpdateDirection(dir);
    expect(equalv3(dir, dirc)).toBe(true);

    //试试新的
    dir.set(0.5, 0.5, 1).normalize();
    dirc = dir.clone();
    orb.SetFromDirection(dir);

    //试着还原
    orb.UpdateDirection(dir);
    expect(equalv3(dir, dirc)).toBe(true);

    dir.set(0, 0, -1);
    dirc = dir.clone();
    orb.SetFromDirection(dir);

    expect(equaln(orb.theta, Math.PI * 0.5)).toBe(true);
    expect(equaln(orb.RoX, Math.PI * -0.5)).toBe(true);

    //试着还原
    orb.UpdateDirection(dir);
    expect(equalv3(dir, dirc)).toBe(true);

    let newDir = orb.UpdateDirection();

    let up = Orbit.ComputUpDirection(new THREE.Vector3(0, 0, 1));
    expect(equalv3(up, new THREE.Vector3(0, 1, 0))).toBe(true);

    Orbit.ComputUpDirection(new THREE.Vector3(0, 0, -1), up);
    Orbit.ComputUpDirection(new THREE.Vector3(0, 0, 1), up);
    Orbit.ComputUpDirection(new THREE.Vector3(1, 0, 0), up);

    let newD = orb.UpdateDirection();
    expect(equalv3(newD, new THREE.Vector3(0, 0, -1))).toBe(true);
});


test("测试求向量", () =>
{
    let dir = new THREE.Vector3(0, 0, 1);
    let up = Orbit.ComputUpDirection(dir);
    expect(up).toMatchSnapshot();

    Orbit.ComputUpDirection(dir, up);
    expect(up).toMatchSnapshot();

    dir.z = -1;
    Orbit.ComputUpDirection(dir, up);
    expect(up).toMatchSnapshot();

    dir.x = 1;
    Orbit.ComputUpDirection(dir, up);
    expect(up).toMatchSnapshot();
});