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scary-cube.js
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scary-cube.js
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import {LitElement, html,css } from 'lit-element';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
import * as Gestures from '@polymer/polymer/lib/utils/gestures.js';
import {afterNextRender} from '@polymer/polymer/lib/utils/render-status.js';
import ResizeObserver from 'resize-observer-polyfill';
const sides = ['U', 'D', 'R', 'L', 'F', 'B'];
const vPos = ['top', 'middle', 'bottom'];
const hPos = ['left', 'center', 'right'];
const colors = ['white', 'yellow', 'red', 'orange', 'green', 'blue'];
const allMoves = {
U: [
{source: {side: 'U', vPos: 'top', hPos: 'left'}, destination: {vPos: 'top', hPos: 'right'}},
{source: {side: 'U', vPos: 'top', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'right'}},
{source: {side: 'U', vPos: 'top', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'right'}},
{source: {side: 'U', vPos: 'middle', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'center'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'left'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'left'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'left'}, destination: {vPos: 'top', hPos: 'left'}},
{source: {side: 'U', vPos: 'middle', hPos: 'left'}, destination: {vPos: 'top', hPos: 'center'}},
{source: {side: 'U', vPos: 'middle', hPos: 'center'}, destination: {}},
{source: {side: 'F', vPos: 'top'}, destination: {side: 'L'}},
{source: {side: 'L', vPos: 'top'}, destination: {side: 'B'}},
{source: {side: 'B', vPos: 'top'}, destination: {side: 'R'}},
{source: {side: 'R', vPos: 'top'}, destination: {side: 'F'}}
],
u: {steps: ['U', 'E', 'E', 'E']},
D: [
{source: {side: 'D', vPos: 'top', hPos: 'left'}, destination: {vPos: 'top', hPos: 'right'}},
{source: {side: 'D', vPos: 'top', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'right'}},
{source: {side: 'D', vPos: 'top', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'right'}},
{source: {side: 'D', vPos: 'middle', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'center'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'left'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'left'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'left'}, destination: {vPos: 'top', hPos: 'left'}},
{source: {side: 'D', vPos: 'middle', hPos: 'left'}, destination: {vPos: 'top', hPos: 'center'}},
{source: {side: 'D', vPos: 'middle', hPos: 'center'}, destination: {}},
{source: {side: 'F', vPos: 'bottom'}, destination: {side: 'R'}},
{source: {side: 'L', vPos: 'bottom'}, destination: {side: 'F'}},
{source: {side: 'B', vPos: 'bottom'}, destination: {side: 'L'}},
{source: {side: 'R', vPos: 'bottom'}, destination: {side: 'B'}}
],
d: {steps: ['D', 'E']},
R: [
{source: {side: 'R', vPos: 'top', hPos: 'left'}, destination: {vPos: 'top', hPos: 'right'}},
{source: {side: 'R', vPos: 'top', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'right'}},
{source: {side: 'R', vPos: 'top', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'right'}},
{source: {side: 'R', vPos: 'middle', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'center'}},
{source: {side: 'R', vPos: 'bottom', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'left'}},
{source: {side: 'R', vPos: 'bottom', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'left'}},
{source: {side: 'R', vPos: 'bottom', hPos: 'left'}, destination: {vPos: 'top', hPos: 'left'}},
{source: {side: 'R', vPos: 'middle', hPos: 'left'}, destination: {vPos: 'top', hPos: 'center'}},
{source: {side: 'R', vPos: 'middle', hPos: 'center'}, destination: {}},
{source: {side: 'F', hPos: 'right'}, destination: {side: 'U'}},
{source: {side: 'D', hPos: 'right'}, destination: {side: 'F'}},
{source: {side: 'U', vPos: 'top', hPos: 'right'}, destination: {side: 'B', vPos: 'bottom', hPos: 'left'}},
{source: {side: 'U', vPos: 'middle', hPos: 'right'}, destination: {side: 'B', vPos: 'middle', hPos: 'left'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'right'}, destination: {side: 'B', vPos: 'top', hPos: 'left'}},
{source: {side: 'B', vPos: 'top', hPos: 'left'}, destination: {side: 'D', vPos: 'bottom', hPos: 'right'}},
{source: {side: 'B', vPos: 'middle', hPos: 'left'}, destination: {side: 'D', vPos: 'middle', hPos: 'right'}},
{source: {side: 'B', vPos: 'bottom', hPos: 'left'}, destination: {side: 'D', vPos: 'top', hPos: 'right'}}
],
r: {steps: ['R', 'M', 'M', 'M']},
L: [
{source: {side: 'L', vPos: 'top', hPos: 'left'}, destination: {vPos: 'top', hPos: 'right'}},
{source: {side: 'L', vPos: 'top', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'right'}},
{source: {side: 'L', vPos: 'top', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'right'}},
{source: {side: 'L', vPos: 'middle', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'center'}},
{source: {side: 'L', vPos: 'bottom', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'left'}},
{source: {side: 'L', vPos: 'bottom', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'left'}},
{source: {side: 'L', vPos: 'bottom', hPos: 'left'}, destination: {vPos: 'top', hPos: 'left'}},
{source: {side: 'L', vPos: 'middle', hPos: 'left'}, destination: {vPos: 'top', hPos: 'center'}},
{source: {side: 'L', vPos: 'middle', hPos: 'center'}, destination: {}},
{source: {side: 'F', hPos: 'left'}, destination: {side: 'D'}},
{source: {side: 'U', hPos: 'left'}, destination: {side: 'F'}},
{source: {side: 'D', vPos: 'top', hPos: 'left'}, destination: {side: 'B', vPos: 'bottom', hPos: 'right'}},
{source: {side: 'D', vPos: 'middle', hPos: 'left'}, destination: {side: 'B', vPos: 'middle', hPos: 'right'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'left'}, destination: {side: 'B', vPos: 'top', hPos: 'right'}},
{source: {side: 'B', vPos: 'top', hPos: 'right'}, destination: {side: 'U', vPos: 'bottom', hPos: 'left'}},
{source: {side: 'B', vPos: 'middle', hPos: 'right'}, destination: {side: 'U', vPos: 'middle', hPos: 'left'}},
{source: {side: 'B', vPos: 'bottom', hPos: 'right'}, destination: {side: 'U', vPos: 'top', hPos: 'left'}}
],
l: {steps: ['L', 'M']},
F: [
{source: {side: 'F', vPos: 'top', hPos: 'left'}, destination: {vPos: 'top', hPos: 'right'}},
{source: {side: 'F', vPos: 'top', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'right'}},
{source: {side: 'F', vPos: 'top', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'right'}},
{source: {side: 'F', vPos: 'middle', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'center'}},
{source: {side: 'F', vPos: 'bottom', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'left'}},
{source: {side: 'F', vPos: 'bottom', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'left'}},
{source: {side: 'F', vPos: 'bottom', hPos: 'left'}, destination: {vPos: 'top', hPos: 'left'}},
{source: {side: 'F', vPos: 'middle', hPos: 'left'}, destination: {vPos: 'top', hPos: 'center'}},
{source: {side: 'F', vPos: 'middle', hPos: 'center'}, destination: {}},
{source: {side: 'L', vPos: 'top', hPos: 'right'}, destination: {side: 'U', vPos: 'bottom', hPos: 'right'}},
{source: {side: 'L', vPos: 'middle', hPos: 'right'}, destination: {side: 'U', vPos: 'bottom', hPos: 'center'}},
{source: {side: 'L', vPos: 'bottom', hPos: 'right'}, destination: {side: 'U', vPos: 'bottom', hPos: 'left'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'left'}, destination: {side: 'R', vPos: 'top', hPos: 'left'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'center'}, destination: {side: 'R', vPos: 'middle', hPos: 'left'}},
{source: {side: 'U', vPos: 'bottom', hPos: 'right'}, destination: {side: 'R', vPos: 'bottom', hPos: 'left'}},
{source: {side: 'R', vPos: 'top', hPos: 'left'}, destination: {side: 'D', vPos: 'top', hPos: 'right'}},
{source: {side: 'R', vPos: 'middle', hPos: 'left'}, destination: {side: 'D', vPos: 'top', hPos: 'center'}},
{source: {side: 'R', vPos: 'bottom', hPos: 'left'}, destination: {side: 'D', vPos: 'top', hPos: 'left'}},
{source: {side: 'D', vPos: 'top', hPos: 'left'}, destination: {side: 'L', vPos: 'top', hPos: 'right'}},
{source: {side: 'D', vPos: 'top', hPos: 'center'}, destination: {side: 'L', vPos: 'middle', hPos: 'right'}},
{source: {side: 'D', vPos: 'top', hPos: 'right'}, destination: {side: 'L', vPos: 'bottom', hPos: 'right'}}
],
f: {steps: ['F', 'S']},
B: [
{source: {side: 'B', vPos: 'top', hPos: 'left'}, destination: {vPos: 'top', hPos: 'right'}},
{source: {side: 'B', vPos: 'top', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'right'}},
{source: {side: 'B', vPos: 'top', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'right'}},
{source: {side: 'B', vPos: 'middle', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'center'}},
{source: {side: 'B', vPos: 'bottom', hPos: 'right'}, destination: {vPos: 'bottom', hPos: 'left'}},
{source: {side: 'B', vPos: 'bottom', hPos: 'center'}, destination: {vPos: 'middle', hPos: 'left'}},
{source: {side: 'B', vPos: 'bottom', hPos: 'left'}, destination: {vPos: 'top', hPos: 'left'}},
{source: {side: 'B', vPos: 'middle', hPos: 'left'}, destination: {vPos: 'top', hPos: 'center'}},
{source: {side: 'B', vPos: 'middle', hPos: 'center'}, destination: {}},
{source: {side: 'R', vPos: 'top', hPos: 'right'}, destination: {side: 'U', vPos: 'top', hPos: 'left'}},
{source: {side: 'R', vPos: 'middle', hPos: 'right'}, destination: {side: 'U', vPos: 'top', hPos: 'center'}},
{source: {side: 'R', vPos: 'bottom', hPos: 'right'}, destination: {side: 'U', vPos: 'top', hPos: 'right'}},
{source: {side: 'U', vPos: 'top', hPos: 'left'}, destination: {side: 'L', vPos: 'bottom', hPos: 'left'}},
{source: {side: 'U', vPos: 'top', hPos: 'center'}, destination: {side: 'L', vPos: 'middle', hPos: 'left'}},
{source: {side: 'U', vPos: 'top', hPos: 'right'}, destination: {side: 'L', vPos: 'top', hPos: 'left'}},
{source: {side: 'L', vPos: 'top', hPos: 'left'}, destination: {side: 'D', vPos: 'bottom', hPos: 'left'}},
{source: {side: 'L', vPos: 'middle', hPos: 'left'}, destination: {side: 'D', vPos: 'bottom', hPos: 'center'}},
{source: {side: 'L', vPos: 'bottom', hPos: 'left'}, destination: {side: 'D', vPos: 'bottom', hPos: 'right'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'right'}, destination: {side: 'R', vPos: 'top', hPos: 'right'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'center'}, destination: {side: 'R', vPos: 'middle', hPos: 'right'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'left'}, destination: {side: 'R', vPos: 'bottom', hPos: 'right'}}
],
b: {steps: ['B', 'S', 'S', 'S']},
M: [
{source: {side: 'U', hPos: 'center'}, destination: {side: 'F'}},
{source: {side: 'F', hPos: 'center'}, destination: {side: 'D'}},
{source: {side: 'B', vPos: 'top', hPos: 'center'}, destination: {side: 'U', vPos: 'bottom'}},
{source: {side: 'B', vPos: 'middle', hPos: 'center'}, destination: {side: 'U'}},
{source: {side: 'B', vPos: 'bottom', hPos: 'center'}, destination: {side: 'U', vPos: 'top'}},
{source: {side: 'D', vPos: 'top', hPos: 'center'}, destination: {side: 'B', vPos: 'bottom'}},
{source: {side: 'D', vPos: 'middle', hPos: 'center'}, destination: {side: 'B'}},
{source: {side: 'D', vPos: 'bottom', hPos: 'center'}, destination: {side: 'B', vPos: 'top'}}
],
E: [
{source: {side: 'F', vPos: 'middle'}, destination: {side: 'R'}},
{source: {side: 'L', vPos: 'middle'}, destination: {side: 'F'}},
{source: {side: 'B', vPos: 'middle'}, destination: {side: 'L'}},
{source: {side: 'R', vPos: 'middle'}, destination: {side: 'B'}}
],
S: [
{source: {side: 'L', vPos: 'top', hPos: 'center'}, destination: {side: 'U', vPos: 'middle', hPos: 'right'}},
{source: {side: 'L', vPos: 'middle', hPos: 'center'}, destination: {side: 'U', vPos: 'middle', hPos: 'center'}},
{source: {side: 'L', vPos: 'bottom', hPos: 'center'}, destination: {side: 'U', vPos: 'middle', hPos: 'left'}},
{source: {side: 'U', vPos: 'middle', hPos: 'left'}, destination: {side: 'R', vPos: 'top', hPos: 'center'}},
{source: {side: 'U', vPos: 'middle', hPos: 'center'}, destination: {side: 'R', vPos: 'middle', hPos: 'center'}},
{source: {side: 'U', vPos: 'middle', hPos: 'right'}, destination: {side: 'R', vPos: 'bottom', hPos: 'center'}},
{source: {side: 'R', vPos: 'top', hPos: 'center'}, destination: {side: 'D', vPos: 'middle', hPos: 'right'}},
{source: {side: 'R', vPos: 'middle', hPos: 'center'}, destination: {side: 'D', vPos: 'middle', hPos: 'center'}},
{source: {side: 'R', vPos: 'bottom', hPos: 'center'}, destination: {side: 'D', vPos: 'middle', hPos: 'left'}},
{source: {side: 'D', vPos: 'middle', hPos: 'left'}, destination: {side: 'L', vPos: 'top', hPos: 'center'}},
{source: {side: 'D', vPos: 'middle', hPos: 'center'}, destination: {side: 'L', vPos: 'middle', hPos: 'center'}},
{source: {side: 'D', vPos: 'middle', hPos: 'right'}, destination: {side: 'L', vPos: 'bottom', hPos: 'center'}}
],
x: {steps: ['R', 'L', 'L', 'L', 'M', 'M', 'M']},
y: {steps: ['U', 'D', 'D', 'D', 'E', 'E', 'E']},
z: {steps: ['F', 'S', 'B', 'B', 'B']}
};
/* eslint-disable quotes */
const transitionClasses = {
'U': 'move-fast move-yc',
"U'": 'move-fast move-ycc',
'U2': 'move-slow move-y2',
'u': 'move-fast move-yc',
"u'": 'move-fast move-ycc',
'u2': 'move-slow move-y2',
'E': 'move-fast move-ycc',
"E'": 'move-fast move-yc',
'E2': 'move-slow move-y2cc',
'D': 'move-fast move-ycc',
"D'": 'move-fast move-yc',
'D2': 'move-slow move-y2cc',
'd': 'move-fast move-ycc',
"d'": 'move-fast move-yc',
'd2': 'move-slow move-y2cc',
'M': 'move-fast move-xcc',
"M'": 'move-fast move-xc',
'M2': 'move-slow move-x2cc',
'L': 'move-fast move-xcc',
"L'": 'move-fast move-xc',
'L2': 'move-slow move-x2cc',
'l': 'move-fast move-xcc',
"l'": 'move-fast move-xc',
'l2': 'move-slow move-x2cc',
'R': 'move-fast move-xc',
"R'": 'move-fast move-xcc',
'R2': 'move-slow move-x2',
'r': 'move-fast move-xc',
"r'": 'move-fast move-xcc',
'r2': 'move-slow move-x2',
'B': 'move-fast move-zcc',
"B'": 'move-fast move-zc',
'B2': 'move-slow move-z2cc',
'b': 'move-fast move-zcc',
"b'": 'move-fast move-zc',
'b2': 'move-slow move-z2cc',
'F': 'move-fast move-zc',
"F'": 'move-fast move-zcc',
'F2': 'move-slow move-z2',
'f': 'move-fast move-zc',
"f'": 'move-fast move-zcc',
'f2': 'move-slow move-z2',
'S': 'move-fast move-zc',
"S'": 'move-fast move-zcc',
'S2': 'move-slow move-z2',
'x': 'move-fast move-xc',
"x'": 'move-fast move-xcc',
'x2': 'move-slow move-x2',
'z': 'move-fast move-zc',
"z'": 'move-fast move-zcc',
'z2': 'move-slow move-z2',
'y': 'move-fast move-yc',
"y'": 'move-fast move-ycc',
'y2': 'move-slow move-y2',
};
const hintClasses = {
'U': 'hint hint-yc',
"U'": 'hint hint-ycc',
'U2': 'hint hint-yc',
'u': 'hint hint-yc',
"u'": 'hint hint-ycc',
'u2': 'hint hint-yc',
'E': 'hint hint-ycc',
"E'": 'hint hint-yc',
'E2': 'hint hint-ycc',
'D': 'hint hint-ycc',
"D'": 'hint hint-yc',
'D2': 'hint hint-ycc',
'd': 'hint hint-ycc',
"d'": 'hint hint-yc',
'd2': 'hint hint-ycc',
'M': 'hint hint-xcc',
"M'": 'hint hint-xc',
'M2': 'hint hint-xcc',
'L': 'hint hint-xcc',
"L'": 'hint hint-xc',
'L2': 'hint hint-xcc',
'l': 'hint hint-xcc',
"l'": 'hint hint-xc',
'l2': 'hint hint-xcc',
'R': 'hint hint-xc',
"R'": 'hint hint-xcc',
'R2': 'hint hint-xc',
'r': 'hint hint-xc',
"r'": 'hint hint-xcc',
'r2': 'hint hint-xc',
'B': 'hint hint-zcc',
"B'": 'hint hint-zc',
'B2': 'hint hint-zcc',
'b': 'hint hint-zcc',
"b'": 'hint hint-zc',
'b2': 'hint hint-zcc',
'F': 'hint hint-zc',
"F'": 'hint hint-zcc',
'F2': 'hint hint-zc',
'f': 'hint hint-zc',
"f'": 'hint hint-zcc',
'f2': 'hint hint-zc',
'S': 'hint hint-zc',
"S'": 'hint hint-zcc',
'S2': 'hint hint-zc',
'x': 'hint hint-xc',
"x'": 'hint hint-xcc',
'x2': 'hint hint-xc',
'z': 'hint hint-zc',
"z'": 'hint hint-zcc',
'z2': 'hint hint-zc',
'y': 'hint hint-yc',
"y'": 'hint hint-ycc',
'y2': 'hint hint-yc',
};
/* eslint-enable quotes */
/**
* `scary-cube`
*
* Rubik's Cube implemented as web component based on lit-element.
*
* Needs to be sized (best by fitting it into a parent element) to correctly display and scale.
*
* Orientation of cube can be changed with mouse and touch gestures.
*
* Moves need to be performed using the `addMove` or `addMoves` methods, using SiGN notation.
*
* Colors of the cube can be changed using the following custom CSS properties, matching the sides of the cube
*
* ```
* scary-cube {
* --cube-color-u: white;
* --cube-color-d: yellow;
* --cube-color-f: green;
* --cube-color-b: #3333FF;
* --cube-color-l: orange;
* --cube-color-r: red;
* }
* ```
*
* Additionaly the speed of the move animations can be adjusted with the `--cube-speed` parameter
*
* ```
* scary-cube {
* --cube-speed: 0.4s;
* }
* ```
*
* @customElement
* @polymer
* @demo demo/index.html
*/
class ScaryCube extends GestureEventListeners(LitElement) {
static get is() {
return 'scary-cube';
}
static get properties() {
return {
_faces: Array,
_scaleFactor: Number,
_rotX: Number,
_rotY: Number,
_moveClass: String,
_hinting: Boolean,
/**
* Disables the display of labels on the center faces.
*/
noFaceLabels: {
type: Boolean,
attribute: 'no-face-labels',
reflect: true
},
/**
* Disables gesture events.
*/
noGestures: {
type: Boolean,
attribute: 'no-gestures',
reflect: true
}
};
}
static get solvedCube() {
const faces = [];
sides.forEach((side, index) => {
vPos.forEach((v) => {
hPos.forEach((h) => {
faces.push({
side: side,
vPos: v,
hPos: h,
color: colors[index],
moving: false
});
});
});
});
return faces;
}
/**
* Returns true if the cube is in a solved state, i.e. each side has one color.
*
* @return {Boolean}
*/
get isSolved() {
const colorCheck = {};
for (let f = 0; f < this._faces.length; f++) {
if (!colorCheck[this._faces[f].side]) {
colorCheck[this._faces[f].side] = this._faces[f].color;
}
if (colorCheck[this._faces[f].side] !== this._faces[f].color) {
return false;
}
}
return true;
}
/**
* Returns or sets the current state of the cube.
*
* Accepts an array of faces or a cube.js compatible string.
*
* Throws erros when trying to set an invalid state.
*
* @return {Array}
*/
get faces() {
return this._faces.map((face) => ({
side: face.side,
vPos: face.vPos,
hPos: face.hPos,
color: face.color
}));
}
set faces(input) {
if (input.length !== 54) {
throw new Error('Faces needs to be an array or string of length 54.');
}
if (typeof input === 'string' || input instanceof String) {
input = this._facesFromString(input);
}
this._setFaces(input);
}
/**
* Return the current state of the cube as a cube.js compatible string.
*
* @return {String}
*/
get facesAsString() {
const faces = [];
['U', 'R', 'F', 'D', 'L', 'B'].forEach(side => {
vPos.forEach(v => {
hPos.forEach(h => {
const face = this._faces.find((f)=> f.side === side && f.vPos === v && f.hPos === h);
const s = sides[colors.indexOf(face.color)];
faces.push(s);
});
});
});
return faces.join('');
}
_setFaces(input) {
const faces = [];
const check = {};
const colorCheck = [0, 0, 0, 0, 0, 0];
input.forEach((face) => {
if (!face.side || !face.vPos || !face.hPos || !face.color) {
throw new Error('Each face needs to have the fields side, vPos, hPos and color.');
}
if (sides.indexOf(face.side) < 0) {
throw new Error(`Encountered invalid value for side: ${face.side}`);
}
if (vPos.indexOf(face.vPos) < 0) {
throw new Error(`Encountered invalid value for vPos: ${face.vPos}`);
}
if (hPos.indexOf(face.hPos) < 0) {
throw new Error(`Encountered invalid value for hPos: ${face.hPos}`);
}
const colorIndex = colors.indexOf(face.color);
if (colorIndex < 0) {
throw new Error(`Encountered invalid value for color: ${face.color}`);
}
if (colorCheck[colorIndex] >= 9) {
throw new Error(`Color ${face.color} appears more than 9 times`);
}
colorCheck[colorIndex]++;
if (check[`${face.side} ${face.vPos} ${face.hPos}`]) {
throw new Error(`Encountered duplicate face: ${face.side} ${face.vPos} ${face.hPos}`);
}
check[`${face.side} ${face.vPos} ${face.hPos}`] = true;
faces.push({
side: face.side,
vPos: face.vPos,
hPos: face.hPos,
color: face.color,
moving: false
});
});
if (this.moving) {
this.moving = false;
this._queue = [];
}
this._moveClass = '';
this._faces = faces;
}
_facesFromString(input) {
const faces = [];
const faceCubes = vPos.length * hPos.length;
['U', 'R', 'F', 'D', 'L', 'B'].forEach((side, i)=> {
vPos.forEach((v, vi)=> {
hPos.forEach((h, hi)=> {
const index = i * faceCubes + vi * vPos.length + hi;
const s = input.charAt(index);
const color = colors[sides.indexOf(s)];
faces.push({
side: side,
vPos: v,
hPos: h,
color: color,
moving: false
});
});
});
});
return faces;
}
constructor() {
super();
this._boundResizeHandler = this._resizeHandler.bind(this);
this._boundTrackHandler = this._trackHandler.bind(this);
this._boundTransitionHandler = this._transitionHandler.bind(this);
this._boundMoveHandler = this._performMove.bind(this);
this._resizeObserver = new ResizeObserver(this._boundResizeHandler);
this._faces = ScaryCube.solvedCube;
this._queue = [];
this._rotX = -25;
this._rotY = -35;
this._scaleFactor = 1;
this._hinting = false;
this.noGestures = false;
this.noFaceLabels = false;
}
connectedCallback() {
super.connectedCallback();
this._resizeObserver.observe(this);
}
firstUpdated() {
this._viewport = this.shadowRoot.getElementById('viewport');
}
updated(changedProperties) {
if (changedProperties.has('noGestures')) {
if (this.noGestures) {
Gestures.removeListener(this, 'track', this._boundTrackHandler);
} else {
Gestures.addListener(this, 'track', this._boundTrackHandler);
}
}
}
static get styles() {
return css`
:host {
display: block;
}
#viewport {
width: 100%;
height: 100%;
overflow: hidden;
margin: 0;
padding: 0;
}
#cube {
position: absolute;
transform-style: preserve-3d;
width: 300px; height: 300px;
transform-origin: 150px 150px;
top: 50%;
left: 50%;
margin-top: -150px;
margin-left: -150px;
}
#slice {
position: absolute;
transform-style: preserve-3d;
transform-origin: 150px 150px;
}
.face {
display: block;
box-sizing: border-box;
position: absolute;
width: 101px;
height: 101px;
border: 4px solid black;
border-radius: 5px;
opacity: 0.9;
font-weight: bold;
text-align:center;
font-size: 30px;
padding-top:35px;
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
user-select: none;
}
.face[hidden] {
display: none;
}
.u.top.left { transform:rotateX(90deg) translate3d(0px,-100px,50px); }
.u.top.center { transform:rotateX(90deg) translate3d(100px,-100px,50px); }
.u.top.right { transform:rotateX(90deg) translate3d(200px,-100px,50px); }
.u.middle.left { transform:rotateX(90deg) translate3d(0px,0px,50px);}
.u.middle.center { transform:rotateX(90deg) translate3d(100px,0px,50px);}
.u.middle.right { transform:rotateX(90deg) translate3d(200px,0px,50px);}
.u.bottom.left { transform:rotateX(90deg) translate3d(0px,100px,50px); }
.u.bottom.center { transform:rotateX(90deg) translate3d(100px,100px,50px); }
.u.bottom.right { transform:rotateX(90deg) translate3d(200px,100px,50px); }
.d.top.left { transform:rotateX(-90deg) translate3d(0px,-100px,250px); }
.d.top.center { transform:rotateX(-90deg) translate3d(100px,-100px,250px); }
.d.top.right { transform:rotateX(-90deg) translate3d(200px,-100px,250px); }
.d.middle.left { transform:rotateX(-90deg) translate3d(0px,0px,250px); }
.d.middle.center { transform:rotateX(-90deg) translate3d(100px,0px,250px); }
.d.middle.right { transform:rotateX(-90deg) translate3d(200px,0px,250px); }
.d.bottom.left { transform:rotateX(-90deg) translate3d(0px,100px,250px); }
.d.bottom.center { transform:rotateX(-90deg) translate3d(100px,100px,250px); }
.d.bottom.right { transform:rotateX(-90deg) translate3d(200px,100px,250px); }
.f.top.left { transform: translate3d(0px,0px,150px); }
.f.top.center { transform: translate3d(100px,0px,150px); }
.f.top.right { transform: translate3d(200px,0px,150px); }
.f.middle.left { transform: translate3d(0px,100px,150px); }
.f.middle.center { transform: translate3d(100px,100px,150px); }
.f.middle.right { transform: translate3d(200px,100px,150px); }
.f.bottom.left { transform: translate3d(0px,200px,150px); }
.f.bottom.center{ transform: translate3d(100px,200px,150px); }
.f.bottom.right { transform: translate3d(200px,200px,150px); }
.b.top.left { transform:rotateY(180deg) translate3d(-200px,0px,150px);}
.b.top.center { transform:rotateY(180deg) translate3d(-100px,0px,150px);}
.b.top.right { transform:rotateY(180deg) translate3d(0px,0px,150px);}
.b.middle.left { transform:rotateY(180deg) translate3d(-200px,100px,150px);}
.b.middle.center { transform:rotateY(180deg) translate3d(-100px,100px,150px);}
.b.middle.right { transform:rotateY(180deg) translate3d(0px,100px,150px);}
.b.bottom.left { transform:rotateY(180deg) translate3d(-200px,200px,150px); }
.b.bottom.center { transform:rotateY(180deg) translate3d(-100px,200px,150px); }
.b.bottom.right { transform:rotateY(180deg) translate3d(0px,200px,150px); }
.l.top.left { transform:rotateY(-90deg) translate3d(-100px,0px,50px); }
.l.top.center { transform:rotateY(-90deg) translate3d(0px,0px,50px); }
.l.top.right { transform:rotateY(-90deg) translate3d(100px,0px,50px); }
.l.middle.left { transform:rotateY(-90deg) translate3d(-100px,100px,50px); }
.l.middle.center { transform:rotateY(-90deg) translate3d(0px,100px,50px); }
.l.middle.right { transform:rotateY(-90deg) translate3d(100px,100px,50px); }
.l.bottom.left { transform:rotateY(-90deg) translate3d(-100px,200px,50px); }
.l.bottom.center { transform:rotateY(-90deg) translate3d(0px,200px,50px); }
.l.bottom.right { transform:rotateY(-90deg) translate3d(100px,200px,50px); }
.r.top.left { transform:rotateY(90deg) translate3d(-100px,0px,250px); }
.r.top.center { transform:rotateY(90deg) translate3d(0px,0px,250px); }
.r.top.right { transform:rotateY(90deg) translate3d(100px,0px,250px); }
.r.middle.left { transform:rotateY(90deg) translate3d(-100px,100px,250px); }
.r.middle.center { transform:rotateY(90deg) translate3d(0px,100px,250px); }
.r.middle.right { transform:rotateY(90deg) translate3d(100px,100px,250px); }
.r.bottom.left { transform:rotateY(90deg) translate3d(-100px,200px,250px); }
.r.bottom.center { transform:rotateY(90deg) translate3d(0px,200px,250px); }
.r.bottom.right { transform:rotateY(90deg) translate3d(100px,200px,250px); }
.red { background-color: var(--cube-color-r, red); }
.blue { background-color: var(--cube-color-b, #3333FF); }
.green { background-color: var(--cube-color-f, green); }
.yellow { background-color: var(--cube-color-d, yellow); }
.white { background-color: var(--cube-color-u, white); }
.orange { background-color: var(--cube-color-l, orange); }
.move-fast {
transition: all var(--cube-speed, 0.2s) ease;
}
.move-slow {
transition: all calc(2 * var(--cube-speed, 0.2s)) ease;
}
.move-ycc {
transform: rotateY(90deg);
}
.move-yc {
transform: rotateY(-90deg);
}
.move-y2 {
transform: rotateY(-180deg);
}
.move-y2cc {
transform: rotateY(180deg);
}
.move-zc {
transform: rotateZ(90deg);
}
.move-zcc {
transform: rotateZ(-90deg);
}
.move-z2 {
transform: rotateZ(180deg);
}
.move-z2cc {
transform: rotateZ(-180deg);
}
.move-xc {
transform: rotateX(90deg);
}
.move-xcc {
transform: rotateX(-90deg);
}
.move-x2 {
transform: rotateX(180deg);
}
.move-x2cc {
transform: rotateX(-180deg);
}
.hint {
transition: all var(--cube-speed, 0.2s) ease;
}
.hint-ycc {
transform: rotateY(20deg);
}
.hint-yc {
transform: rotateY(-20deg);
}
.hint-zc {
transform: rotateZ(20deg);
}
.hint-zcc {
transform: rotateZ(-20deg);
}
.hint-xc {
transform: rotateX(20deg);
}
.hint-xcc {
transform: rotateX(-20deg);
}
`;
}
render() {
const style = html`
<style>
</style>`;
const viewportStyle = this._viewportStyle(this._scaleFactor);
const cubeStyle = this._cubeStyle(this._rotX, this._rotY, this._scaleFactor);
return html`
${style}
<div id="viewport" style=${viewportStyle}>
<div id="cube" style=${cubeStyle}>
<div id="slice" class=${this._moveClass} @transitionend=${this._boundTransitionHandler}>
${this._faces.map((f) => html`
<div class=${this._faceClasslist(f.side, f.vPos, f.hPos, f.color)} ?hidden=${!f.moving}>
${(this.noFaceLabels === false && this._hinting && f.vPos === 'middle' && f.hPos === 'center') ? html`${f.side}` : html``}
</div>`)}
</div>
${this._faces.map((f) => html`
<div class=${this._faceClasslist(f.side, f.vPos, f.hPos, f.color)} ?hidden=${f.moving}>
${(this.noFaceLabels === false && f.vPos === 'middle' && f.hPos === 'center') ? html`${f.side}` : html``}
</div>`)}
</div>
</div>`;
}
_viewportStyle(scaleFactor) {
return 'perspective: ' + Math.round(800 * scaleFactor) + 'px;';
}
_cubeStyle(rotX, rotY, scaleFactor) {
let transform = 'translate3d(0px, 0px, -100px) rotateX(' + rotX + 'deg) rotateY(' + rotY + 'deg)';
transform += ' scale3d(' + scaleFactor + ',' + scaleFactor + ',' + scaleFactor + ')';
return 'transform: ' + transform + ';';
}
_faceClasslist(face, v, h, color) {
return 'face ' + face.toLowerCase() + ' ' + v + ' ' + h + ' ' + color;
}
disconnectedCallback() {
this._resizeObserver.unobserve(this);
Gestures.removeListener(this, 'track', this._boundTrackHandler);
}
_resizeHandler(entries) {
let height;
let width;
if (entries && entries.length > 0) {
entries = entries.filter((entry) => (entry.target === this));
}
if (entries && entries.length > 0) {
width = entries[0].contentRect.width;
height = entries[0].contentRect.height;
} else {
width = this._viewport.offsetWidth;
height = this._viewport.offsetHeight;
}
this._scaleFactor = Math.min(width / 500, height / 500);
}
_trackHandler(e) {
switch (e.detail.state) {
case 'start':
this._draggingReversed = (this._rotX < -90 || this._rotX > 90);
break;
case 'track':
this._rotX -= e.detail.ddy * 0.5;
if (this._rotX > 180) { this._rotX -= 360; }
if (this._rotX < -180) { this._rotX += 360; }
if (this._draggingReversed) {
this._rotY -= e.detail.ddx * 0.5;
} else {
this._rotY += e.detail.ddx * 0.5;
}
if (this._rotY > 180) { this._rotY -= 360; }
if (this._rotY < -180) { this._rotY += 360; }
break;
}
}
/**
* Adds multiple moves to the queue of moves to be performed.
*
* @param {String | Array} moves Array or space separated String of moves in SiGN notation
* @param {Boolean} silent If true, the cube will not be animated for these moves
*/
addMoves(moves, silent) {
if (typeof moves === 'string' || moves instanceof String) {
moves = moves.split(' ');
}
// filter invalid moves
moves = moves.filter((move) => !!transitionClasses[move]);
if (moves.length === 0) {
return;
}
if (!this._queue) {
this._queue = [];
}
moves.forEach((move) => {
this._queue.push({move: move, silent: silent});
});
if (!this.moving) {
this.moving = true;
afterNextRender(this, this._boundMoveHandler);
}
}
/**
* Adds a single move to the queue of moves to be performed.
*
* @param {String} move Move to perform in SiGN notation
* @param {Boolean} silent If true, the cube will not be animated for this move
*/
addMove(move, silent) {
if (!this._queue) {
this._queue = [];
}
if (!transitionClasses[move]) {
// invalid move
return;
}
this._queue.push({move: move, silent: silent});
if (!this.moving) {
this.moving = true;
afterNextRender(this, this._boundMoveHandler);
}
}
/**
* Displays a hint how to perform a move
*
* @param {String} move Move to perform in SiGN notation
*/
hint(move) {
if (!this._queue) {
this._queue = [];
}
if (!transitionClasses[move]) {
// invalid move
return;
}
this._queue.push({move: move, hint: true});
if (!this.moving) {
this.moving = true;
afterNextRender(this, this._boundMoveHandler);
}
}
/**
* Removes a currently displayed hint
*/
removeHint() {
if (this._hinting && !this.moving) {
this._faces = this._newFaces;
this._hinting = false;
this._moveClass = '';
return;
}
}
/**
* Sets the orientation of the cube.
*
* @param {Number} rotX Rotation around x-axis as value between -180° and +180°
* @param {Number} rotY Rotation around y-axis as value between -180° and +180°
*/
setOrientation(rotX, rotY) {
this._rotX = rotX;
this._rotY = rotY;
}
/**
* Reset the cube to its solved state
*/
reset() {
if (this.moving) {
this.moving = false;
this._queue = [];
}
this._moveClass = '';
this._faces = ScaryCube.solvedCube;
}
/**
* Fired when a move has finished
*
* @event move-finished
*/
/**
* Fired when the cube has been solved
*
* @event cube-solved
*/
_performMove() {
if (!this._queue || this._queue.length === 0) {
this.moving = false;
if (!this._hinting && this.isSolved) {
this.dispatchEvent(new CustomEvent('cube-solved'));
}
return;
}
if (this._hinting) {
// Reset cube before performing the move
this._faces = this._newFaces;
this._hinting = false;
this._moveClass = '';
afterNextRender(this, this._boundMoveHandler);
return;
}
const move = this._queue.shift();
if (move.hint && this._queue.length > 0) {
// hint moves are ignored when other moves are in queue
afterNextRender(this, this._boundMoveHandler);
return;
}
this.moving = true;
const slice = move.move[0];
if (!slice) {
// invalid move, skip to next one
afterNextRender(this, this._boundMoveHandler);
return;
}
const dir = move.move[1];
let count = 1;
if (dir == '\'') {
count = 3;
}
if (dir == '2') {
count = 2;
}
const moves = allMoves[slice];
if (!moves) {
afterNextRender(this, this._boundMoveHandler);
return;
}
let steps = [];
if (moves.steps) {
for (let c = 0; c < count; c++) {
steps = steps.concat(moves.steps);
}
} else {
for (let c = 0; c < count; c++) {
steps.push(slice);
}
}
const newFaces = JSON.parse(JSON.stringify(this._faces));
const originalFaces = JSON.parse(JSON.stringify(this._faces));
steps.forEach((step) => {