import { expect } from 'chai';

import { Vec3 } from '../../../src/core/math/vec3.js';

import { Plane } from '../../../src/core/shape/plane.js';

describe('Plane', function () {

describe('#constructor', function () {

it('supports zero arguments', function () {

const p = new Plane();

expect(p.normal.x).to.equal(Vec3.UP.x);

expect(p.normal.y).to.equal(Vec3.UP.y);

expect(p.normal.z).to.equal(Vec3.UP.z);

expect(p.distance).to.equal(0);

});

it('supports arguments', function () {

const p = new Plane(Vec3.UP, 5);

expect(p.normal.x).to.equal(0);

expect(p.normal.y).to.equal(1);

expect(p.normal.z).to.equal(0);

expect(p.distance).to.equal(5);

});

});

describe('#setFromPointNormal', function () {

const p = new Plane();

p.setFromPointNormal(new Vec3(1, 2, 3), Vec3.UP);

expect(p.normal.x).to.equal(0);

expect(p.normal.y).to.equal(1);

expect(p.normal.z).to.equal(0);

expect(p.distance).to.equal(-2);

});

describe('#intersectsLine', function () {

const p = new Plane();

p.setFromPointNormal(new Vec3(0, 5, 0), Vec3.UP);

const intersection = new Vec3();

const intersects = p.intersectsLine(new Vec3(1, 0, 3), new Vec3(1, 6, 3), intersection);

expect(intersects).to.equal(true);

expect(intersection.x).to.equal(1);

expect(intersection.y).to.equal(5);

expect(intersection.z).to.equal(3);

});

});