avocado/packages/math/test/rectangle.js

import {expect} from 'chai';

import * as Rectangle from '../src/rectangle';

describe('Rectangle', () => {
  it('can calculate intersections', () => {
    expect(Rectangle.intersects([0, 0, 16, 16], [8, 8, 24, 24])).to.be.true;
    expect(Rectangle.intersects([0, 0, 16, 16], [16, 16, 32, 32])).to.be.false;
    expect(Rectangle.isTouching([0, 0, 16, 16], [0, 0])).to.be.true;
    expect(Rectangle.isTouching([0, 0, 16, 16], [16, 16])).to.be.false;
    expect(Rectangle.intersection([0, 0, 16, 16], [8, 8, 24, 24])).to.deep.equal([8, 8, 8, 8]);
    expect(Rectangle.united([0, 0, 4, 4], [4, 4, 8, 8])).to.deep.equal([0, 0, 12, 12]);
  });
  it('can compose and decompose', () => {
    const rectangle = Rectangle.compose([0, 0], [16, 16]);
    expect(Rectangle.equals(rectangle, [0, 0, 16, 16])).to.be.true;
    expect(Rectangle.position(rectangle)).to.deep.equal([0, 0]);
    expect(Rectangle.size(rectangle)).to.deep.equal([16, 16]);
  });
  it('can make a deep copy', () => {
    const rectangle = [0, 0, 16, 16];
    const rectangle2 = Rectangle.copy(rectangle);
    expect(Rectangle.equals(rectangle, rectangle2)).to.be.true;
    rectangle[0] = 6;
    expect(Rectangle.equals(rectangle, rectangle2)).to.be.false;
  });
  it('can convert to an object', () => {
    const rectangle = [0, 0, 16, 16];
    expect(Rectangle.toObject(rectangle)).to.deep.equal({
      x: 0,
      y: 0,
      width: 16,
      height: 16,
    });
    expect(Rectangle.toObject(rectangle, true)).to.deep.equal({
      x: 0,
      y: 0,
      w: 16,
      h: 16,
    });
  });
  it('can translate by vector', () => {
    expect(Rectangle.translated([0, 0, 16, 16], [8, 8])).to.deep.equal([8, 8, 16, 16]);
  });
  it('can check for null', () => {
    expect(Rectangle.isNull(null)).to.be.true;
    expect(Rectangle.isNull(3)).to.be.true;
    expect(Rectangle.isNull([1])).to.be.true;
    expect(Rectangle.isNull([1, 1])).to.be.true;
    expect(Rectangle.isNull([1, 1, 1])).to.be.true;
    expect(Rectangle.isNull([1, 1, 1, 1, 1])).to.be.true;
    expect(Rectangle.isNull([0, 0, 1, 1])).to.be.false;
    expect(Rectangle.isNull([0, 0, 1, 0])).to.be.true;
  });
  it('can round', () => {
    expect(Rectangle.round([3.14, 4.70, 5.32, 1.8])).to.deep.equal([3, 5, 5, 2]);
  });
  it('can floor', () => {
    expect(Rectangle.floor([3.14, 4.70, 5.32, 1.8])).to.deep.equal([3, 4, 5, 1]);
  });
  it('can test inside', () => {
    expect(Rectangle.isInside(
      [-22.55753963192675, -36.22420629859356, 64, 64],
      [-6.557539631926751, -20.224206298593554, 32, 32],
    )).to.be.true;
  });
});