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index.js
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! function() {
var DIST_DRAG = 30,
HINT_DELAY = 500,
ifs = document.querySelectorAll(".scene > .icon > div"),
icons = document.querySelectorAll(".scene > .icon > div > div"),
pieces = document.querySelectorAll(".scene > .cube .p"),
pf1s = document.querySelectorAll(".scene > .cube .f1"),
pf2s = document.querySelectorAll(".scene > .cube .f2"),
pf3s = document.querySelectorAll(".scene > .cube .f3"),
pf4s = document.querySelectorAll(".scene > .cube .f4"),
pf5s = document.querySelectorAll(".scene > .cube .f5"),
pf6s = document.querySelectorAll(".scene > .cube .f6"),
arrows = document.querySelectorAll(".scene > .cube > .pointer .hint > .arrow"),
rects = document.querySelectorAll(".scene > .cube > .pointer .hint > .rect"),
scene = document.querySelector(".scene"),
cube = document.querySelector(".scene > .cube"),
axis = document.querySelector(".scene > .cube > .axis"),
pointer = document.querySelector(".scene > .cube > .pointer"),
px = document.querySelector(".scene > .cube > .pointer > .x"),
py = document.querySelector(".scene > .cube > .pointer > .y"),
pz = document.querySelector(".scene > .cube > .pointer > .z"),
hint = document.querySelector(".scene > .cube > .pointer .hint"),
row1 = [
[pf1s[0], pf1s[1], pf1s[2]],
[pf2s[0], pf2s[1], pf2s[2]],
[pf3s[0], pf3s[1], pf3s[2]],
[pf4s[0], pf4s[1], pf4s[2]]
],
row2 = [
[pf1s[3], pf1s[4], pf1s[5]],
[pf2s[3], pf2s[4], pf2s[5]],
[pf3s[3], pf3s[4], pf3s[5]],
[pf4s[3], pf4s[4], pf4s[5]]
],
row3 = [
[pf1s[6], pf1s[7], pf1s[8]],
[pf2s[6], pf2s[7], pf2s[8]],
[pf3s[6], pf3s[7], pf3s[8]],
[pf4s[6], pf4s[7], pf4s[8]]
],
row4 = [
[pf1s[0], pf1s[3], pf1s[6]],
[pf6s[0], pf6s[3], pf6s[6]],
[pf3s[8], pf3s[5], pf3s[2]],
[pf5s[0], pf5s[3], pf5s[6]]
],
row5 = [
[pf1s[1], pf1s[4], pf1s[7]],
[pf6s[1], pf6s[4], pf6s[7]],
[pf3s[7], pf3s[4], pf3s[1]],
[pf5s[1], pf5s[4], pf5s[7]]
],
row6 = [
[pf1s[2], pf1s[5], pf1s[8]],
[pf6s[2], pf6s[5], pf6s[8]],
[pf3s[6], pf3s[3], pf3s[0]],
[pf5s[2], pf5s[5], pf5s[8]]
],
row7 = [
[pf2s[0], pf2s[3], pf2s[6]],
[pf6s[6], pf6s[7], pf6s[8]],
[pf4s[8], pf4s[5], pf4s[2]],
[pf5s[2], pf5s[1], pf5s[0]]
],
row8 = [
[pf2s[1], pf2s[4], pf2s[7]],
[pf6s[3], pf6s[4], pf6s[5]],
[pf4s[7], pf4s[4], pf4s[1]],
[pf5s[5], pf5s[4], pf5s[3]]
],
row9 = [
[pf2s[2], pf2s[5], pf2s[8]],
[pf6s[0], pf6s[1], pf6s[2]],
[pf4s[6], pf4s[3], pf4s[0]],
[pf5s[8], pf5s[7], pf5s[6]]
],
roll = { on: false, dragging: false },
timerHint = 0,
i, j, len, n, s;
readColor();
listen();
function readColor() {
for (i = 0, len = icons.length; i < len; ++i) {
n = icons[i].className.indexOf("c");
s = icons[i].className.substr(n, 2);
icons[i].xxc = s;
n = pieces[i].className.indexOf("c");
s = pieces[i].className.substr(n, 2);
pieces[i].xxc = s;
}
}
function listen() {
axis.addEventListener("transition" in document.body.style ? "transitionend" : "webkitTransitionEnd", onTransitionEnd);
pointer.addEventListener("wheel", onWheel);
pointer.addEventListener("mousedown", onMouseDown);
scene.addEventListener("mousemove", onMouseMove);
scene.addEventListener("mouseup", onMouseUp);
scene.addEventListener("mouseleave", onMouseLeave);
}
function synchronize() {
var ci, cp, lead, follows;
for (i = 0; i < 54; i += 9) {
lead = pieces[i].xxc;
follows = 0;
for (j = 0; j < 9; ++j) {
n = i + j;
ci = icons[n].xxc;
cp = pieces[n].xxc;
icons[n].classList.toggle(ci);
icons[n].classList.toggle(cp);
icons[n].xxc = cp;
cp == lead && ++follows;
}
follows == 9 ? ifs[i / 9].classList.add("fused") : ifs[i / 9].classList.remove("fused");
}
}
function onWheel(e) {
var wheelDelta = e.wheelDelta || -e.deltaY;
if (!e.ctrlKey) {
e.preventDefault();
if (!roll.on) {
if (e.target.className == "x") {
roll.str = wheelDelta > 0 ? 90 : -90;
playAnimation(row4, row5, row6, pf4s, pf2s);
} else if (e.target.className == "y") {
roll.str = wheelDelta > 0 ? -90 : 90;
playAnimation(row1, row2, row3, pf6s, pf5s);
} else if (e.target.className == "z") {
// wheelDelta > 0
roll.str = wheelDelta > 0 ? 90 : -90;
playAnimation(row7, row8, row9, pf1s, pf3s);
}
}
}
}
function onTransitionEnd(e) {
axis.style.transition = "none";
axis.style.transform = "";
reassignColor();
synchronize();
setTimeout(resetAxis, 0);
function resetAxis() {
roll.on = false;
axis.style.transition = "";
}
}
function onMouseDown(e) {
var p;
if (!roll.on) {
e.preventDefault();
pointer.style.display = "none";
p = document.elementFromPoint(e.clientX, e.clientY);
pointer.style.display = "";
if (p && p.classList.contains("p")) {
roll.dragging = true;
roll.x = e.clientX;
roll.y = e.clientY;
roll.f = getFace(p);
roll.p = getPiece(p);
}
}
}
// mousemove e.button chrome 41 e.buttons
function onMouseMove(e) {
var angle, dir;
if (roll.dragging) {
// mouse down
if (Math.abs(roll.y - e.clientY) > DIST_DRAG || Math.abs(roll.x - e.clientX) > DIST_DRAG) {
angle = getAngle(e.clientX, e.clientY);
dir = getDir(roll.f, angle);
roll.dir = dir;
roll.str = getStr(roll.p, dir);
showHint();
} else
hideHint();
}
}
function getFace(p) {
n = p.className.indexOf("f");
return +p.className.substr(n + 1, 1);
}
function getPiece(p) {
n = p.className.indexOf("p", 1);
return +p.className.substr(n + 1, 1);
}
//(roll.x, roll.y) (x, y)
// atan2 dx = 0
function getAngle(x, y) {
// getAngle，atan2
//
// 90deg
// ^ y
// x |
// 0deg <------|------- 180deg
// |
// -90deg
return Math.round(Math.atan2(roll.y - y, roll.x - x) * 180 / Math.PI);
}
function getDir(f, angle) {
// up = 1, r = right = 2, dn = down = 3, l = left = 4
if (f == 1) {
// r = 2 dn = 3 l = 4 up = 1 r = 2
// ------- | ------- | ------- | ------- | -------
// -150 -60 30 120
if (angle < -150) return 2;
else if (angle < -60) return 3;
else if (angle < 30) return 4;
else if (angle < 120) return 1;
else return 2;
} else if (f == 2) {
// r = 2 dn = 3 l = 4 up = 1 r = 2
// ------- | ------- | ------- | ------- | -------
// -120 -30 60 150
if (angle < -120) return 2;
else if (angle < -30) return 3;
else if (angle < 60) return 4;
else if (angle < 150) return 1;
else return 2;
} else if (f == 5) {
// dn = 3 l = 4 up = 1 r = 2
// ------- | ------- | ------- | ------- |
// -90 0 90 180
if (angle < -90) return 3;
else if (angle < 0) return 4;
else if (angle < 90) return 1;
else return 2;
} else
return 0;
}
function getStr(p, dir) {
if (dir == 1) { // up
if (p == 7 || p == 8 || p == 9) return 270;
else if (p == 4 || p == 5 || p == 6) return 180;
else return 90;
} else if (dir == 2) { // right
if (p == 1 || p == 4 || p == 7) return 270;
else if (p == 2 || p == 5 || p == 8) return 180;
else return 90;
} else if (dir == 3) { // down
if (p == 1 || p == 2 || p == 3) return -270;
else if (p == 4 || p == 5 || p == 6) return -180;
else return -90;
} else if (dir == 4) { // left
if (p == 3 || p == 6 || p == 9) return -270;
else if (p == 2 || p == 5 || p == 8) return -180;
else return -90;
} else
return 0;
}
function onMouseUp(e) {
var f, p, dir;
if (roll.dragging) {
roll.dragging = false;
if (Math.abs(roll.y - e.clientY) > DIST_DRAG || Math.abs(roll.x - e.clientX) > DIST_DRAG) {
f = roll.f;
p = roll.p;
dir = roll.dir;
hideHint();
if (Math.abs(roll.str) == 180)
axis.style.transitionDuration = "0.5s";
else if (Math.abs(roll.str) == 270)
axis.style.transitionDuration = "0.6s";
// up = 1, right = 2, down = 3, left = 4
// 1 roll row 1, 2, 3, 4, 5, 6 一
// f2 roll row 1, 2, 3, 7, 8, 9 一
// f5 roll row 4, 5, 6, 7, 8, 9 一
if (f == 1) {
if (dir == 1 || dir == 3) {
if (p == 1 || p == 4 || p == 7) playAnimation(row4, 0, 0, 0, pf2s);
else if (p == 2 || p == 5 || p == 8) playAnimation(row5);
else if (p == 3 || p == 6 || p == 9) playAnimation(row6, 0, 0, pf4s);
} else { // 左右
if (p == 1 || p == 2 || p == 3) playAnimation(row1, 0, 0, 0, pf5s);
else if (p == 4 || p == 5 || p == 6) playAnimation(row2);
else if (p == 7 || p == 8 || p == 9) playAnimation(row3, 0, 0, pf6s);
}
} else if (f == 2) {
if (dir == 1 || dir == 3) { // 上下
if (p == 1 || p == 4 || p == 7) playAnimation(row7, 0, 0, 0, pf3s);
else if (p == 2 || p == 5 || p == 8) playAnimation(row8);
else if (p == 3 || p == 6 || p == 9) playAnimation(row9, 0, 0, pf1s);
} else { // 和 f == 1 的左右一样
if (p == 1 || p == 2 || p == 3) playAnimation(row1, 0, 0, 0, pf5s);
else if (p == 4 || p == 5 || p == 6) playAnimation(row2);
else if (p == 7 || p == 8 || p == 9) playAnimation(row3, 0, 0, pf6s);
}
} else if (f == 5) {
if (dir == 1 || dir == 3) { // 和 f == 1 的上下一样
if (p == 1 || p == 4 || p == 7) playAnimation(row4, 0, 0, 0, pf2s);
else if (p == 2 || p == 5 || p == 8) playAnimation(row5);
else if (p == 3 || p == 6 || p == 9) playAnimation(row6, 0, 0, pf4s);
} else { // f == 2 的上下对应这里的左右
if (p == 1 || p == 2 || p == 3) playAnimation(row7, 0, 0, 0, pf3s);
else if (p == 4 || p == 5 || p == 6) playAnimation(row8);
else if (p == 7 || p == 8 || p == 9) playAnimation(row9, 0, 0, pf1s);
}
}
}
}
}
function onMouseLeave(e) {
roll.dragging = false;
hideHint();
}
// f2
// row1、row2、row3， r1、r2、r3
function playAnimation(r1, r2, r3, f1, f2) {
var row = r1 || r2 || r3,
face = f1 || f2; // face
roll.row1 = r1;
roll.row2 = r2;
roll.row3 = r3;
roll.face1 = f1;
roll.face2 = f2;
if (r1 && r2)
for (i = 0, len = pieces.length; i < len; ++i)
axis.appendChild(pieces[i]);
else {
for (i = 0; i < 4; ++i)
for (j = 0; j < 3; ++j)
axis.appendChild(row[i][j]);
if (face)
for (i = 0, len = face.length; i < len; ++i)
axis.appendChild(face[i]);
}
if (row == row1 || row == row2 || row == row3) s = "rotateY(";
else if (row == row4 || row == row5 || row == row6) s = "rotateX(";
else s = "rotateZ(";
roll.on = true;
axis.style.transform = s + roll.str + "deg)";
}
function reassignColor() {
var row1 = roll.row1,
row2 = roll.row2,
row3 = roll.row3,
face1 = roll.face1,
face2 = roll.face2,
str = roll.str,
row, face;
if (row1 && row2) {
rollRow(row1, str);
rollRow(row2, str);
rollRow(row3, str);
rollFace(face1, str);
rollFace(face2, -str);
for (i = 0, len = pieces.length; i < len; ++i)
cube.appendChild(pieces[i]);
} else {
row = row1 || row2 || row3;
face = face1 || face2;
for (i = 0; i < 4; ++i)
for (j = 0; j < 3; ++j)
cube.appendChild(row[i][j]);
rollRow(row, str);
if (face) {
for (i = 0, len = face.length; i < len; ++i)
cube.appendChild(face[i]);
rollFace(face, roll.face1 ? str : -str);
}
}
}
function rollFace(f, str) {
var t0, t1, t2, c0, c1, c2;
if (str == 180 || str == -180) {
t0 = f[0].xxc;
t1 = f[1].xxc;
t2 = f[2].xxc;
c0 = f[8].xxc;
c1 = f[7].xxc;
c2 = f[6].xxc;
f[0].classList.remove(t0);
f[1].classList.remove(t1);
f[2].classList.remove(t2);
f[8].classList.remove(c0);
f[7].classList.remove(c1);
f[6].classList.remove(c2);
f[0].classList.add(c0);
f[1].classList.add(c1);
f[2].classList.add(c2);
f[8].classList.add(t0);
f[7].classList.add(t1);
f[6].classList.add(t2);
f[0].xxc = c0;
f[1].xxc = c1;
f[2].xxc = c2;
f[8].xxc = t0;
f[7].xxc = t1;
f[6].xxc = t2;
t0 = f[3].xxc;
c0 = f[5].xxc;
f[3].classList.remove(t0);
f[3].classList.add(c0);
f[5].classList.remove(c0);
f[5].classList.add(t0);
f[3].xxc = c0;
f[5].xxc = t0;
} else if (str == 90 || str == -270) {
t0 = f[0].xxc;
t1 = f[1].xxc;
f[0].classList.remove(t0);
f[1].classList.remove(t1);
c0 = f[6].xxc;
c1 = f[3].xxc;
f[6].classList.remove(c0);
f[3].classList.remove(c1);
f[0].classList.add(c0);
f[1].classList.add(c1);
f[0].xxc = c0;
f[1].xxc = c1;
c0 = f[8].xxc;
c1 = f[7].xxc;
f[8].classList.remove(c0);
f[7].classList.remove(c1);
f[6].classList.add(c0);
f[3].classList.add(c1);
f[6].xxc = c0;
f[3].xxc = c1;
c0 = f[2].xxc;
c1 = f[5].xxc;
f[2].classList.remove(c0);
f[5].classList.remove(c1);
f[8].classList.add(c0);
f[7].classList.add(c1);
f[8].xxc = c0;
f[7].xxc = c1;
f[2].classList.add(t0);
f[5].classList.add(t1);
f[2].xxc = t0;
f[5].xxc = t1;
} else if (str == -90 || str == 270) {
t0 = f[0].xxc;
t1 = f[1].xxc;
f[0].classList.remove(t0);
f[1].classList.remove(t1);
c0 = f[2].xxc;
c1 = f[5].xxc;
f[2].classList.remove(c0);
f[5].classList.remove(c1);
f[0].classList.add(c0);
f[1].classList.add(c1);
f[0].xxc = c0;
f[1].xxc = c1;
c0 = f[8].xxc;
c1 = f[7].xxc;
f[8].classList.remove(c0);
f[7].classList.remove(c1);
f[2].classList.add(c0);
f[5].classList.add(c1);
f[2].xxc = c0;
f[5].xxc = c1;
c0 = f[6].xxc;
c1 = f[3].xxc;
f[6].classList.remove(c0);
f[3].classList.remove(c1);
f[8].classList.add(c0);
f[7].classList.add(c1);
f[8].xxc = c0;
f[7].xxc = c1;
f[6].classList.add(t0);
f[3].classList.add(t1);
f[6].xxc = t0;
f[3].xxc = t1;
}
}
// row = [[p1, p2, p3], ...], row.length = 4
function rollRow(row, str) {
var p0, p1, p2, p3, p4, p5,
c0, c1, c2, c3, c4, c5;
if (str == 90 || str == -270) {
p0 = row[0][0];
p1 = row[0][1];
p2 = row[0][2];
c0 = p0.xxc;
c1 = p1.xxc;
c2 = p2.xxc;
p0.classList.toggle(c0);
p1.classList.toggle(c1);
p2.classList.toggle(c2);
p3 = row[1][0];
p4 = row[1][1];
p5 = row[1][2];
change();
p0 = p3;
p1 = p4;
p2 = p5;
p3 = row[2][0];
p4 = row[2][1];
p5 = row[2][2];
change();
p0 = p3;
p1 = p4;
p2 = p5;
p3 = row[3][0];
p4 = row[3][1];
p5 = row[3][2];
change();
p3.classList.toggle(c0);
p4.classList.toggle(c1);
p5.classList.toggle(c2);
p3.xxc = c0;
p4.xxc = c1;
p5.xxc = c2;
} else if (str == 180 || str == -180) {
p0 = row[0][0];
p1 = row[0][1];
p2 = row[0][2];
p3 = row[2][0];
p4 = row[2][1];
p5 = row[2][2];
swap();
p0 = row[1][0];
p1 = row[1][1];
p2 = row[1][2];
p3 = row[3][0];
p4 = row[3][1];
p5 = row[3][2];
swap();
} else if (str == -90 || str == 270) {
p0 = row[0][0];
p1 = row[0][1];
p2 = row[0][2];
c0 = p0.xxc;
c1 = p1.xxc;
c2 = p2.xxc;
p0.classList.toggle(c0);
p1.classList.toggle(c1);
p2.classList.toggle(c2);
p3 = row[3][0];
p4 = row[3][1];
p5 = row[3][2];
change();
p0 = p3;
p1 = p4;
p2 = p5;
p3 = row[2][0];
p4 = row[2][1];
p5 = row[2][2];
change();
p0 = p3;
p1 = p4;
p2 = p5;
p3 = row[1][0];
p4 = row[1][1];
p5 = row[1][2];
change();
p3.classList.toggle(c0);
p4.classList.toggle(c1);
p5.classList.toggle(c2);
p3.xxc = c0;
p4.xxc = c1;
p5.xxc = c2;
}
function change() {
c3 = p3.xxc;
c4 = p4.xxc;
c5 = p5.xxc;
p0.classList.toggle(c3);
p1.classList.toggle(c4);
p2.classList.toggle(c5);
p0.xxc = c3;
p1.xxc = c4;
p2.xxc = c5;
p3.classList.toggle(c3);
p4.classList.toggle(c4);
p5.classList.toggle(c5);
}
function swap() {
c0 = p0.xxc;
c1 = p1.xxc;
c2 = p2.xxc;
c3 = p3.xxc;
c4 = p4.xxc;
c5 = p5.xxc;
p0.classList.toggle(c0);
p1.classList.toggle(c1);
p2.classList.toggle(c2);
p3.classList.toggle(c3);
p4.classList.toggle(c4);
p5.classList.toggle(c5);
p0.classList.toggle(c3);
p1.classList.toggle(c4);
p2.classList.toggle(c5);
p3.classList.toggle(c0);
p4.classList.toggle(c1);
p5.classList.toggle(c2);
p0.xxc = c3;
p1.xxc = c4;
p2.xxc = c5;
p3.xxc = c0;
p4.xxc = c1;
p5.xxc = c2;
}
}
function showHint() {
if (hint.style.visibility)
set();
else if (timerHint == 0)
timerHint = setTimeout(show, HINT_DELAY);
function show() {
if (roll.f == 1) px.appendChild(hint);
else if (roll.f == 2) pz.appendChild(hint);
else if (roll.f == 5) py.appendChild(hint);
timerHint = 0;
hint.style.visibility = "visible";
setTimeout(set, 0);
}
function set() {
setHintDir(roll.dir, Math.abs(roll.str) / 90);
}
}
function hideHint() {
if (timerHint) {
clearTimeout(timerHint);
timerHint = 0;
}
if (hint.style.visibility) {
hint.style.visibility = "";
setHintDir(0, 0);
}
}
function setHintDir(dir, str) {
// up = 1, right = 2, down = 3, left = 4
for (i = 0; i < 4; ++i) arrows[i].classList.remove("active");
for (i = 0; i < 3; ++i) rects[i].classList.remove("active");
if (dir == 1) arrows[3].classList.add("active");
else if (dir == 2) arrows[0].classList.add("active");
else if (dir == 3) arrows[1].classList.add("active");
else if (dir == 4) arrows[2].classList.add("active");
for (i = 0, str = Math.min(str, 3); i < str; ++i)
rects[i].classList.add("active");
}
}();