@spearwolf/twopoint5d
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a library to create 2.5d realtime graphics and pixelart with three.js
186 lines • 8.28 kB
JavaScript
import { describe, expect, test } from 'vitest';
import { TextureAtlas } from './TextureAtlas.js';
import { TextureCoords } from './TextureCoords.js';
const Bar = Symbol('bar');
const NO_LONGER_BE_A_COINCIDENCE = 23;
describe('TextureAtlas', () => {
test('construction', () => {
const atlas = new TextureAtlas();
expect(atlas).toBeDefined();
expect(atlas.size).toBe(0);
});
describe('add', () => {
test('with coords', () => {
const atlas = new TextureAtlas();
const texCoords = new TextureCoords();
const frameId = atlas.add(texCoords);
expect(frameId).toBeGreaterThanOrEqual(0);
expect(atlas.get(frameId).coords).toBe(texCoords);
expect(atlas.size).toBe(1);
});
test('with coords + data', () => {
const atlas = new TextureAtlas();
const texCoords = new TextureCoords();
const frameId = atlas.add(texCoords, { foo: 123, abc: 'xyz' });
expect(frameId).toBeGreaterThanOrEqual(0);
expect(atlas.get(frameId)).toMatchObject({
coords: texCoords,
data: { foo: 123, abc: 'xyz' },
});
expect(atlas.size).toBe(1);
});
test('with name + coords', () => {
const atlas = new TextureAtlas();
const texCoords0 = new TextureCoords();
const texCoords1 = new TextureCoords();
const frameId0 = atlas.add('foo', texCoords0);
const frameId1 = atlas.add(Bar, texCoords1);
expect(frameId0).toBeGreaterThanOrEqual(0);
expect(frameId1).toBeGreaterThan(frameId0);
expect(atlas.size).toBe(2);
expect(atlas.get(frameId0).coords).toBe(texCoords0);
expect(atlas.frame('foo').coords).toBe(texCoords0);
expect(atlas.frameId('foo')).toBe(frameId0);
expect(atlas.get(frameId0).coords).toBe(texCoords0);
expect(atlas.frame(Bar).coords).toBe(texCoords1);
expect(atlas.frameId(Bar)).toBe(frameId1);
});
test('with name + coords + data', () => {
const atlas = new TextureAtlas();
const texCoords0 = new TextureCoords();
const texCoords1 = new TextureCoords();
const frameId0 = atlas.add('foo', texCoords0, { foo: 123 });
const frameId1 = atlas.add(Bar, texCoords1, { bar: 456 });
expect(frameId0).toBeGreaterThanOrEqual(0);
expect(frameId1).toBeGreaterThan(frameId0);
expect(atlas.size).toBe(2);
expect(atlas.get(frameId0)).toMatchObject({
coords: texCoords0,
data: { foo: 123 },
});
expect(atlas.frame('foo')).toMatchObject({
coords: texCoords0,
data: { foo: 123 },
});
expect(atlas.frameId('foo')).toBe(frameId0);
expect(atlas.get(frameId1)).toMatchObject({
coords: texCoords1,
data: { bar: 456 },
});
expect(atlas.frame(Bar)).toMatchObject({
coords: texCoords1,
data: { bar: 456 },
});
expect(atlas.frameId(Bar)).toBe(frameId1);
});
});
describe('frameNames', () => {
test('with regexp', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add(Bar, new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
const names = atlas.frameNames(/img_\d+/);
expect(Array.isArray(names)).toBeTruthy();
expect(names).toEqual(expect.arrayContaining(['img_001', 'img_002']));
expect(names).toEqual(expect.not.arrayContaining(['foo', Bar]));
});
test('with string', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add(Bar, new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
const names = atlas.frameNames('img.*');
expect(Array.isArray(names)).toBeTruthy();
expect(names).toEqual(expect.arrayContaining(['img_001', 'img_002']));
expect(names).toEqual(expect.not.arrayContaining(['foo', Bar]));
expect(atlas.frameNames('foo')).toMatchObject(['foo']);
expect(atlas.frameNames('f..')).toMatchObject(['foo']);
expect(atlas.frameNames('img_002')).toMatchObject(['img_002']);
expect(atlas.frameNames('xxx')).toMatchObject([]);
});
test('will not find symbols', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add(Bar, new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
const names = atlas.frameNames(Bar.toString());
expect(Array.isArray(names)).toBeTruthy();
expect(names).toHaveLength(0);
});
test('without argument', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add(Bar, new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
const names = atlas.frameNames();
expect(Array.isArray(names)).toBeTruthy();
expect(names).toEqual(expect.arrayContaining(['foo', Bar, 'img_001', 'img_002']));
});
});
test('randomFrameId', () => {
const atlas = new TextureAtlas();
const frameIds = [
atlas.add('foo', new TextureCoords()),
atlas.add(Bar, new TextureCoords()),
atlas.add('img_001', new TextureCoords()),
atlas.add('img_002', new TextureCoords()),
];
for (let i = 0; i < NO_LONGER_BE_A_COINCIDENCE; i++) {
expect(frameIds.includes(atlas.randomFrameId())).toBeTruthy();
}
});
test('randomFrame', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add(Bar, new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
for (let i = 0; i < NO_LONGER_BE_A_COINCIDENCE; i++) {
expect(atlas.randomFrame()).toHaveProperty('coords');
}
});
test('randomFrameName', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add(Bar, new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
for (let i = 0; i < NO_LONGER_BE_A_COINCIDENCE; i++) {
expect(atlas.frameNames().includes(atlas.randomFrameName())).toBeTruthy();
}
});
test('randomFrameIds', () => {
const atlas = new TextureAtlas();
atlas.add(new TextureCoords());
atlas.add(new TextureCoords());
atlas.add(new TextureCoords());
const frameIds = atlas.randomFrameIds(20);
expect(frameIds).toHaveLength(20);
expect(typeof frameIds[0] === 'number').toBeTruthy();
});
test('randomFrames', () => {
const atlas = new TextureAtlas();
atlas.add(new TextureCoords());
atlas.add(new TextureCoords());
atlas.add(new TextureCoords());
const frames = atlas.randomFrames(20);
expect(frames).toHaveLength(20);
expect(frames[0].coords).toBeInstanceOf(TextureCoords);
});
test('randomFrameNames', () => {
const atlas = new TextureAtlas();
atlas.add('foo', new TextureCoords());
atlas.add('bar', new TextureCoords());
atlas.add('img_001', new TextureCoords());
atlas.add('img_002', new TextureCoords());
const names = atlas.randomFrameNames(20);
expect(names).toHaveLength(20);
expect(typeof names[0] === 'string').toBeTruthy();
});
});
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