forked from newbieYoung/Threejs_rubik
-
Notifications
You must be signed in to change notification settings - Fork 0
/
step6.html
1113 lines (1057 loc) · 44.2 KB
/
step6.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no,viewport-fit=cover">
<title>第六步：二阶段算法自动还原魔方</title>
<script type="text/javascript" src="./threejs/three.js"></script>
<script type="text/javascript" src="./threejs/controls/OrbitControls.js"></script>
<link rel="stylesheet" href="./reset.import.css">
<style type="text/css">
div#canvas-frame {
cursor: pointer;
width:100%;
height:100%;
background-color: #EEEEEE;
}
.btn-list{
list-style-type:none;
margin:0;
padding:0;
position: fixed;
top:0;
left:0;
}
button{
font-size:20px;
margin:5px 0 0 5px;
border:1px solid #d1d1d1;
background-color:#fff;
}
p{
color:#ff0000;
margin: 5px 0 0 5px;
}
</style>
</head>
<body onload="threeStart();">
<ul class="btn-list">
<li><button id="autoResetV2">自动还原</button></li>
<li><button id="randomRotate">随机旋转</button></li>
<li><p class="error"></p></li>
</ul>
<div id="canvas-frame"></div>
<script src="//cdn.bootcss.com/eruda/1.4.2/eruda.min.js"></script>
<script>eruda.init();</script>
<script type="text/javascript" src="./lib/tool.js"></script>
<script type="text/javascript" src="./kociemba.js"></script>
<script type="text/javascript">
Module['onRuntimeInitialized'] = function() {
console.log('--- webassembly runtime initialized ---');
};
</script>
<script>
var renderer;//渲染器
var width;//页面宽度
var height;//页面高度
var raycaster = new THREE.Raycaster();//光线碰撞检测器
var mouse = new THREE.Vector2();//存储鼠标坐标或者触摸坐标
var isRotating = false;//魔方是否正在转动
var intersect;//碰撞光线穿过的元素
var normalize;//触发平面法向量
var startPoint;//触发点
var movePoint;
var minCubeIndex;
var initStatus = [];//魔方初始状态
var startFaceNo = 0;
var currentFaceNo = 0;
var endFaceNo = 3;
//魔方转动的六个方向
const XLine = new THREE.Vector3( 1, 0, 0 );//X轴正方向
const XLineAd = new THREE.Vector3( -1, 0, 0 );//X轴负方向
const YLine = new THREE.Vector3( 0, 1, 0 );//Y轴正方向
const YLineAd = new THREE.Vector3( 0, -1, 0 );//Y轴负方向
const ZLine = new THREE.Vector3( 0, 0, 1 );//Z轴正方向
const ZLineAd = new THREE.Vector3( 0, 0, -1 );//Z轴负方向
const CubeParams = {//魔方参数
x:0,
y:0,
z:0,
num:3,
len:50,
//[右,左,上,下,前,后]
colors:['yellow','red','blue','green','white','pink'],
sequences:['R','L','U','D','F','B']//默认序列名
};
//随机旋转，用于打乱魔方
function randomRotate(){
if(!isRotating&&!isAutoReset){
var stepNum = parseInt(20*Math.random())+1;//保证至少转动一步
//var stepNum = 0;
console.log('random rotate '+stepNum);
var funcArr = [R,U,F,B,L,D,r,u,f,b,l,d];
var stepArr = [];
for(var i=0;i<stepNum;i++){
var num = parseInt(Math.random()*funcArr.length);
stepArr.push(funcArr[num]);
}
runMethodAtNo(stepArr,0,0);
}
}
//自动还原第一版
var isAutoReset = false;
var currentStep = 1;
var bottomColor;
var topColor;
var startTime = 0;
var endTime = 0;
var stepCount = 0;
//二阶段还原
function autoResetV2(){
stepCount = 0;
startTime = window.performance.now();
console.log('start autoResetV2');
console.log('start at:'+startTime);
//调用kociemba算法获得自动还原命名
var rubik = getRubikSequence();
console.log(rubik);
var ptr = allocate(intArrayFromString(rubik), 'i8', ALLOC_NONE);
var p0 = Module._solve(ptr);
var command = Module.UTF8ToString(p0);
console.log(command);
var moves = command.split(' ');
//解析命令
var arr = [];
var reg1 = /^[a-zA-Z]{1}$/;//纯字母
var reg2 = /^[a-zA-Z]{1}[2]{1}$/;//字母+2
var reg3 = /^[a-zA-Z]{1}'$/;//字母+单引号
for(var i=0;i<moves.length;i++){
var item = moves[i];
if(reg3.test(item)){
var temp = item.substring(0,1);
arr.push(temp.toLowerCase());
}else if(reg2.test(item)){
var temp = item.substring(0,1);
arr.push(temp);
arr.push(temp)
}else if(reg1.test(item)){
arr.push(item);
}
}
//执行
var funcs = [];
for(var i=0;i<arr.length;i++){
var f = window[arr[i]];
funcs.push(f);
stepCount++;
}
runMethodAtNo(funcs,0,0,function(){
endTime = window.performance.now();
console.log('end at:'+endTime);
console.log('total times:'+(endTime-startTime));
console.log('total steps:'+stepCount);
console.log('end autoResetV2');
})
}
//获取魔方序列
function getRubikSequence(){
var seq = [];
//U
var us = [18,19,20,9,10,11,0,1,2];
for(var i=0;i<us.length;i++){
var ui = getCubeByIndex(us[i]);
seq.push(getFaceColorByVector(ui,YLine));
}
//R
var rs = [2,11,20,5,14,23,8,17,26];
for(var i=0;i<rs.length;i++){
var ri = getCubeByIndex(rs[i]);
seq.push(getFaceColorByVector(ri,XLine));
}
//F
var fs = [0,1,2,3,4,5,6,7,8];
for(var i=0;i<fs.length;i++){
var fi = getCubeByIndex(fs[i]);
seq.push(getFaceColorByVector(fi,ZLine));
}
//D
var ds = [6,7,8,15,16,17,24,25,26];
for(var i=0;i<ds.length;i++){
var di = getCubeByIndex(ds[i]);
seq.push(getFaceColorByVector(di,YLineAd));
}
//L
var ls = [18,9,0,21,12,3,24,15,6];
for(var i=0;i<ls.length;i++){
var li = getCubeByIndex(ls[i]);
seq.push(getFaceColorByVector(li,XLineAd));
}
//B
var bs = [20,19,18,23,22,21,26,25,24];
for(var i=0;i<bs.length;i++){
var bi = getCubeByIndex(bs[i]);
seq.push(getFaceColorByVector(bi,ZLineAd));
}
//因为并没有限制用户操作不能转动中心，因此默认魔方序列名可能会有变化，这里需要重新设置
var cube10 = getCubeByIndex(10);
var uColorIndex = getFaceColorByVector(cube10,YLine);
CubeParams.sequences[uColorIndex] = 'U';
var cube4 = getCubeByIndex(4);
var fColorIndex = getFaceColorByVector(cube4,ZLine);
CubeParams.sequences[fColorIndex] = 'F';
var cube14 = getCubeByIndex(14);
var rColorIndex = getFaceColorByVector(cube14,XLine);
CubeParams.sequences[rColorIndex] = 'R';
var cube12 = getCubeByIndex(12);
var lColorIndex = getFaceColorByVector(cube12,XLineAd);
CubeParams.sequences[lColorIndex] = 'L';
var cube16 = getCubeByIndex(16);
var dColorIndex = getFaceColorByVector(cube16,YLineAd);
CubeParams.sequences[dColorIndex] = 'D';
var cube22 = getCubeByIndex(22);
var bColorIndex = getFaceColorByVector(cube22,ZLineAd);
CubeParams.sequences[bColorIndex] = 'B';
//颜色序号转换为魔方序列
var str = '';
for(var i=0;i<seq.length;i++){
str += CubeParams.sequences[seq[i]];
}
return str;
//UUUUUUUUURRRRRRRRRFFFFFFFFFDDDDDDDDDLLLLLLLLLBBBBBBBBB
/**
|************|
|*U1**U2**U3*|
|************|
|*U4**U5**U6*|
|************|
|*U7**U8**U9*|
|************|
************|************|************|************
*L1**L2**L3*|*F1**F2**F3*|*R1**R2**R3*|*B1**B2**B3*
************|************|************|************
*L4**L5**L6*|*F4**F5**F6*|*R4**R5**R6*|*B4**B5**B6*
************|************|************|************
*L7**L8**L9*|*F7**F8**F9*|*R7**R8**R9*|*B7**B8**B9*
************|************|************|************
|************|
|*D1**D2**D3*|
|************|
|*D4**D5**D6*|
|************|
|*D7**D8**D9*|
|************|
*/
}
//按顺序执行数组里边的方法
function runMethodAtNo(arr,no,rotateNum,next){
if(no>=arr.length-1){
if(next){
arr[no](rotateNum,next);
}else{
arr[no](rotateNum);
}
}else{
arr[no](rotateNum,function(){
if(no<arr.length-1){
no++
runMethodAtNo(arr,no,rotateNum,next);
}
})
}
}
/**
* 魔方基本公式 U、F、L、D、R、u、f、l、d
*/
function U(rotateNum,next){
stepCount++;
var cube2 = getCubeByIndex(2,rotateNum);
var zLine = rotateAxisByYLine(ZLine,rotateNum);
var xLineAd = rotateAxisByYLine(XLineAd,rotateNum);
normalize = zLine;
rotateMove(cube2,xLineAd,next);
}
function u(rotateNum,next){
stepCount++;
var cube2 = getCubeByIndex(2,rotateNum);
var xLine = rotateAxisByYLine(XLine,rotateNum);
var zLineAd = rotateAxisByYLine(ZLineAd,rotateNum);
normalize = xLine;
rotateMove(cube2,zLineAd,next);
}
function F(rotateNum,next){
stepCount++;
var cube2 = getCubeByIndex(2,rotateNum);
var xLine = rotateAxisByYLine(XLine,rotateNum);
normalize = xLine;
rotateMove(cube2,YLineAd,next);
}
function f(rotateNum,next){
stepCount++;
var cube2 = getCubeByIndex(2,rotateNum);
var xLineAd = rotateAxisByYLine(XLineAd,rotateNum);
normalize = YLine;
rotateMove(cube2,xLineAd,next)
}
function L(rotateNum,next){
stepCount++;
var cube0 = getCubeByIndex(0,rotateNum);
var zLine = rotateAxisByYLine(ZLine,rotateNum);
normalize = zLine;
rotateMove(cube0,YLineAd,next);
}
function l(rotateNum,next){
stepCount++;
var cube0 = getCubeByIndex(0,rotateNum);
var zLineAd = rotateAxisByYLine(ZLineAd,rotateNum);
normalize = YLine;
rotateMove(cube0,zLineAd,next);
}
function D(rotateNum,next){
stepCount++;
var cube8 = getCubeByIndex(8,rotateNum);
var xLine = rotateAxisByYLine(XLine,rotateNum);
var zLineAd = rotateAxisByYLine(ZLineAd,rotateNum);
normalize = xLine;
rotateMove(cube8,zLineAd,next);
}
function d(rotateNum,next){
stepCount++;
var cube8 = getCubeByIndex(8,rotateNum);
var zLine = rotateAxisByYLine(ZLine,rotateNum);
var xLineAd = rotateAxisByYLine(XLineAd,rotateNum);
normalize = zLine;
rotateMove(cube8,xLineAd,next);
}
function R(rotateNum,next){
stepCount++;
var cube2 = getCubeByIndex(2,rotateNum);
var zLineAd = rotateAxisByYLine(ZLineAd,rotateNum);
normalize = YLine;
rotateMove(cube2,zLineAd,next);
}
function r(rotateNum,next){
stepCount++;
var cube2 = getCubeByIndex(2,rotateNum);
var zLine = rotateAxisByYLine(ZLine,rotateNum);
normalize = zLine;
rotateMove(cube2,YLineAd,next);
}
function B(rotateNum,next){
stepCount++;
var cube20 = getCubeByIndex(20,rotateNum);
var xLine = rotateAxisByYLine(XLine,rotateNum);
normalize = xLine;
rotateMove(cube20,YLine,next);
}
function b(rotateNum,next){
stepCount++;
var cube20 = getCubeByIndex(20,rotateNum);
var xLine = rotateAxisByYLine(XLine,rotateNum);
normalize = xLine;
rotateMove(cube20,YLineAd,next);
}
//根据索引素组获取方块
function getCubeByIndexs(indexs){
var arr = [];
for(var i=0;i<indexs.length;i++){
arr.push(getCubeByIndex(indexs[i]));
}
return arr;
}
/**
* 根据索引获取方块
* @param index 索引
* @param rotateNum 旋转次数
*/
function getCubeByIndex(index,rotateNum){
var tempIndex = index;
var tempRotateNum = rotateNum;
while(rotateNum>0){
if(parseInt(index/9)==0){
if(index%3==0){
index += 2;
}else if(index%3==1){
index += 10;
}else if(index%3==2){
index += 18;
}
}else if(index%3==2){
if(parseInt(index/9)==0){
index += 18;
}else if(parseInt(index/9)==1){
index += 8;
}else if(parseInt(index/9)==2){
index -= 2;
}
}else if(parseInt(index/9)==2){
if(index%3==2){
index -= 2;
}else if(index%3==1){
index -= 10;
}else if(index%3==0){
index -= 18;
}
}else if(index%3==0){
if(parseInt(index/9)==2){
index -= 18;
}else if(parseInt(index/9)==1){
index -= 8;
}else if(parseInt(index/9)==0){
index += 2;
}
}
rotateNum--;
}
var cube;
for(var i=0;i<cubes.length;i++){
if(cubes[i].cubeIndex == index+minCubeIndex){
cube = cubes[i];
}
}
return cube;
}
//根据Y轴旋转向量
function rotateAxisByYLine(vector,rotateNum){
while(rotateNum>0){
if(vector.angleTo(XLine)==0){
vector = ZLineAd.clone();
}else if(vector.angleTo(ZLineAd)==0){
vector = XLineAd.clone();
}else if(vector.angleTo(XLineAd)==0){
vector = ZLine.clone();
}else if(vector.angleTo(ZLine)==0){
vector = XLine.clone();
}
rotateNum--
}
return vector;
}
//根据颜色序号获取初始化时其对面颜色序号
function getOppositeColor(no){
if(no%2==0||no==0){
return no+1;
}else{
return no-1;
}
}
//获取法向量和已知向量方向相同的面的颜色序号
function getFaceColorByVector(cube,vector){
var materials = cube.material.materials;
var faces = cube.geometry.faces;
var normalMatrix = cube.normalMatrix;
/**
* 转换视角时摄像机位置发生了变动，模型开始上表面的法向量是世界坐标系的Y轴，现在依然是世界坐标系的Y轴；
* 但是小方块面的法向量乘以其法向量矩阵得到的是视图坐标系中的向量；
* 世界坐标系转换成视图坐标系需要乘以视图矩阵的逆反矩阵。
*/
var viewMatrix = new THREE.Matrix4();
viewMatrix.lookAt(camera.position,viewCenter,camera.up);
viewMatrix.getInverse(viewMatrix);
var tempVector = vector.clone();
tempVector.applyMatrix4(viewMatrix);
var angles = [];
for(var i=0;i<faces.length;i++){
var tempNormal = faces[i].normal.clone();
tempNormal.applyMatrix3(normalMatrix);
/**
* 按道理这里应该判断两向量夹角是否等于0，但是因为存在精度问题；
* 有可能得到的角度很接近0，但却不等于0，另外不确定到底保留几位小数合适；
* 因此使用判断最小值的方式。
*/
angles.push(tempNormal.angleTo(tempVector));
}
var minNo = min(angles).no;
return faces[minNo].materialIndex;
//document.body.appendChild(materials[faces[minNo].materialIndex].map.image);
//$frame.style.display = 'none';
}
window.requestAnimFrame = (function() {//如果有变化则可能还需要requestAnimationFrame刷新
return window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.msRequestAnimationFrame ||
window.webkitRequestAnimationFrame;
})();
//根据页面宽度和高度创建渲染器，并添加容器中
var $frame = document.getElementById('canvas-frame');
function initThree() {
width = window.innerWidth;
height = window.innerHeight;
renderer = new THREE.WebGLRenderer({
antialias : true
});
renderer.setSize(width, height);
renderer.setClearColor(0xFFFFFF, 1.0);
$frame.appendChild(renderer.domElement);
}
//创建相机，并设置正方向和中心点
var camera;
var controller;//视角控制器
var viewCenter = new THREE.Vector3( 0, 0, 0 );
function initCamera() {
camera = new THREE.PerspectiveCamera(45, width / height, 1, 1000);
camera.position.set(0, 0, 600);
camera.up.set(0, 1, 0);//正方向
camera.lookAt(viewCenter);
}
//创建场景，后续元素需要加入到场景中才会显示出来
var scene;
function initScene() {
scene = new THREE.Scene();
}
//创建光线
var light;
function initLight() {
light = new THREE.AmbientLight(0xfefefe);
scene.add(light);
}
/**
* 简易魔方
* x、y、z 魔方中心点坐标
* num 魔方阶数
* len 小方块宽高
* colors 魔方六面体颜色
*/
function SimpleCube(x, y, z, num, len, colors) {
//魔方左上角坐标
var leftUpX = x - num / 2 * len;
var leftUpY = y + num / 2 * len;
var leftUpZ = z + num / 2 * len;
//根据颜色生成材质
var materialArr = [];
for (var i = 0; i < colors.length; i++) {
var texture = new THREE.Texture(faces(colors[i]));
texture.needsUpdate = true;
var material = new THREE.MeshLambertMaterial({ map: texture });
materialArr.push(material);
}
var cubes = [];
for (var i = 0; i < num; i++) {
for (var j = 0; j < num * num; j++) {
var cubegeo = new THREE.BoxGeometry(len, len, len);
var cube = new THREE.Mesh(cubegeo, materialArr);
//依次计算各个小方块中心点坐标
cube.position.x = (leftUpX + len / 2) + (j % num) * len;
cube.position.y = (leftUpY - len / 2) - parseInt(j / num) * len;
cube.position.z = (leftUpZ - len / 2) - i * len;
cubes.push(cube)
}
}
return cubes;
}
//生成canvas素材
function faces(rgbaColor) {
var canvas = document.createElement('canvas');
canvas.width = 256;
canvas.height = 256;
var context = canvas.getContext('2d');
if (context) {
//画一个宽高都是256的黑色正方形
canvas.setAttribute('color',rgbaColor);
context.fillStyle = 'rgba(0,0,0,1)';
context.fillRect(0, 0, 256, 256);
//在内部用某颜色的16px宽的线再画一个宽高为224的圆角正方形并用改颜色填充
context.rect(16, 16, 224, 224);
context.lineJoin = 'round';
context.lineWidth = 16;
context.fillStyle = rgbaColor;
context.strokeStyle = rgbaColor;
context.stroke();
context.fill();
} else {
alert('您的浏览器不支持Canvas无法预览.\n');
}
return canvas;
}
//创建展示场景所需的各种元素
var cubes
function initObject() {
//生成魔方小正方体
cubes = SimpleCube(CubeParams.x,CubeParams.y,CubeParams.z,CubeParams.num,CubeParams.len,CubeParams.colors);
var ids = [];
for(var i=0;i<cubes.length;i++){
var item = cubes[i];
/**
* 由于筛选运动元素时是根据物体的id规律来的，但是滚动之后位置发生了变化；
* 再根据初始规律筛选会出问题，而且id是只读变量；
* 所以这里给每个物体设置一个额外变量cubeIndex，每次滚动之后更新根据初始状态更新该cubeIndex；
* 让该变量一直保持初始规律即可。
*/
initStatus.push({
x:item.position.x,
y:item.position.y,
z:item.position.z,
cubeIndex:item.id
});
item.cubeIndex = item.id;
ids.push(item.id);
scene.add(cubes[i]);//并依次加入到场景中
}
minCubeIndex = min(ids).value;
//透明正方体
var cubegeo = new THREE.BoxGeometry(150,150,150);
var hex = 0x000000;
for ( var i = 0; i < cubegeo.faces.length; i += 2 ) {
cubegeo.faces[ i ].color.setHex( hex );
cubegeo.faces[ i + 1 ].color.setHex( hex );
}
var cubemat = new THREE.MeshBasicMaterial({vertexColors: THREE.FaceColors,opacity: 0, transparent: true});
var cube = new THREE.Mesh( cubegeo, cubemat );
cube.cubeType = 'coverCube';
scene.add( cube );
}
//渲染
function render(){
renderer.clear();
renderer.render(scene, camera);
window.requestAnimFrame(render);
}
//开始
function threeStart() {
initThree();
initCamera();
initScene();
initLight();
initObject();
render();
//监听鼠标事件
renderer.domElement.addEventListener('mousedown', startCube, false);
renderer.domElement.addEventListener('mousemove', moveCube, false );
renderer.domElement.addEventListener('mouseup', stopCube,false);
//监听触摸事件
renderer.domElement.addEventListener('touchstart', startCube, false);
renderer.domElement.addEventListener('touchmove', moveCube, false);
renderer.domElement.addEventListener('touchend', stopCube, false);
//视角控制
controller = new THREE.OrbitControls(camera, renderer.domElement);
controller.target = viewCenter;//设置控制点
//自动还原一
var $autoResetV2 = document.querySelector('#autoResetV2');
$autoResetV2.addEventListener('click',function(){
autoResetV2(cubes)
},false);
//随机旋转
var $randomRotate = document.querySelector('#randomRotate');
$randomRotate.addEventListener('click',function(){
randomRotate();
},false);
}
//魔方操作结束
function stopCube(){
intersect = null;
startPoint = null
}
//绕着世界坐标系的某个轴旋转
function rotateAroundWorldY(obj,rad){
var x0 = obj.position.x;
var z0 = obj.position.z;
/**
* 因为物体本身的坐标系是随着物体的变化而变化的，
* 所以如果使用rotateZ、rotateY、rotateX等方法，
* 多次调用后就会出问题，先改为Quaternion实现。
*/
var q = new THREE.Quaternion();
q.setFromAxisAngle( new THREE.Vector3( 0, 1, 0 ), rad );
obj.quaternion.premultiply( q );
//obj.rotateY(rad);
obj.position.x = Math.cos(rad)*x0+Math.sin(rad)*z0;
obj.position.z = Math.cos(rad)*z0-Math.sin(rad)*x0;
}
function rotateAroundWorldZ(obj,rad){
var x0 = obj.position.x;
var y0 = obj.position.y;
var q = new THREE.Quaternion();
q.setFromAxisAngle( new THREE.Vector3( 0, 0, 1 ), rad );
obj.quaternion.premultiply( q );
//obj.rotateZ(rad);
obj.position.x = Math.cos(rad)*x0-Math.sin(rad)*y0;
obj.position.y = Math.cos(rad)*y0+Math.sin(rad)*x0;
}
function rotateAroundWorldX(obj,rad){
var y0 = obj.position.y;
var z0 = obj.position.z;
var q = new THREE.Quaternion();
q.setFromAxisAngle( new THREE.Vector3( 1, 0, 0 ), rad );
obj.quaternion.premultiply( q );
//obj.rotateX(rad);
obj.position.y = Math.cos(rad)*y0-Math.sin(rad)*z0;
obj.position.z = Math.cos(rad)*z0+Math.sin(rad)*y0;
}
//滑动操作魔方
function moveCube(event){
getIntersects(event);
if(intersect){
if(!isRotating&&startPoint){//魔方没有进行转动且满足进行转动的条件
movePoint = intersect.point;
if(!movePoint.equals(startPoint)){//和起始点不一样则意味着可以得到转动向量了
var sub = movePoint.sub(startPoint);//计算转动向量
rotateMove(intersect.object,sub);
}
}
}
event.preventDefault();
}
//某方块在某个方向转动
function rotateMove(target,vector,next){
isRotating = true;//转动标识置为true
var direction = getDirection(vector);//获得方向
var elements = getBoxs(target,direction);
window.requestAnimFrame(function(timestamp){
rotateAnimation(elements,direction,timestamp,0,null,next);
});
}
/**
* 旋转动画
*/
function rotateAnimation(elements,direction,currentstamp,startstamp,laststamp,next){
var totalTime = 200;//转动的总运动时间
var isLastRotate = false;//是否是某次转动最后一次动画
if(startstamp===0){
startstamp = currentstamp;
laststamp = currentstamp;
}
if(currentstamp-startstamp>=totalTime){
currentstamp = startstamp+totalTime;
isLastRotate = true;
}
switch(direction){
//绕z轴顺时针
case 0.1:
case 1.2:
case 2.4:
case 3.3:
for(var i=0;i<elements.length;i++){
rotateAroundWorldZ(elements[i],-90*Math.PI/180*(currentstamp-laststamp)/totalTime);
}
break;
//绕z轴逆时针
case 0.2:
case 1.1:
case 2.3:
case 3.4:
for(var i=0;i<elements.length;i++){
rotateAroundWorldZ(elements[i],90*Math.PI/180*(currentstamp-laststamp)/totalTime);
}
break;
//绕y轴顺时针
case 0.4:
case 1.3:
case 4.3:
case 5.4:
for(var i=0;i<elements.length;i++){
rotateAroundWorldY(elements[i],-90*Math.PI/180*(currentstamp-laststamp)/totalTime);
}
break;
//绕y轴逆时针
case 1.4:
case 0.3:
case 4.4:
case 5.3:
for(var i=0;i<elements.length;i++){
rotateAroundWorldY(elements[i],90*Math.PI/180*(currentstamp-laststamp)/totalTime);
}
break;
//绕x轴顺时针
case 2.2:
case 3.1:
case 4.1:
case 5.2:
for(var i=0;i<elements.length;i++){
rotateAroundWorldX(elements[i],90*Math.PI/180*(currentstamp-laststamp)/totalTime);
}
break;
//绕x轴逆时针
case 2.1:
case 3.2:
case 4.2:
case 5.1:
for(var i=0;i<elements.length;i++){
rotateAroundWorldX(elements[i],-90*Math.PI/180*(currentstamp-laststamp)/totalTime);
}
break;
default:
break;
}
if(!isLastRotate){
window.requestAnimFrame(function(timestamp){
rotateAnimation(elements,direction,timestamp,startstamp,currentstamp,next);
});
}else{
isRotating = false;
startPoint = null;
updateCubeIndex(elements);
if(next){
next();
}else{
if(isAutoReset){
switch(currentStep){
case 1:
step1();
break;
case 2:
step2();
break;
case 3:
step3();
break;
case 4:
step4();
break;
case 5:
step5();
break;
case 6:
step6();
break;
case 7:
step7();
break;
case 8:
step8();
break;
default:
break;
}
}
}
}
}
//更新位置索引
function updateCubeIndex(elements){
for(var i=0;i<elements.length;i++){
var temp1 = elements[i];
for(var j=0;j<initStatus.length;j++){
var temp2 = initStatus[j];
if( Math.abs(temp1.position.x - temp2.x)<=CubeParams.len/2 &&
Math.abs(temp1.position.y - temp2.y)<=CubeParams.len/2 &&
Math.abs(temp1.position.z - temp2.z)<=CubeParams.len/2 ){
temp1.cubeIndex = temp2.cubeIndex;
temp1.skipNext = false;
break;
}
}
}
}
//根据方向获得运动元素
function getBoxs(target,direction){
var targetId = target.cubeIndex;
targetId = targetId-minCubeIndex;
var numI = parseInt(targetId/9);
var numJ = targetId%9;
var boxs = [];
//根据绘制时的规律判断 no = i*9+j
switch(direction){
//绕z轴
case 0.1:
case 0.2:
case 1.1:
case 1.2:
case 2.3:
case 2.4:
case 3.3:
case 3.4:
for(var i=0;i<cubes.length;i++){
var tempId = cubes[i].cubeIndex-minCubeIndex;
if(numI===parseInt(tempId/9)){
boxs.push(cubes[i]);
}
}
break;
//绕y轴
case 0.3:
case 0.4:
case 1.3:
case 1.4:
case 4.3:
case 4.4:
case 5.3:
case 5.4:
for(var i=0;i<cubes.length;i++){
var tempId = cubes[i].cubeIndex-minCubeIndex;
if(parseInt(numJ/3)===parseInt(tempId%9/3)){
boxs.push(cubes[i]);
}
}
break;
//绕x轴
case 2.1:
case 2.2:
case 3.1:
case 3.2:
case 4.1:
case 4.2:
case 5.1:
case 5.2:
for(var i=0;i<cubes.length;i++){
var tempId = cubes[i].cubeIndex-minCubeIndex;
if(tempId%9%3===numJ%3){
boxs.push(cubes[i]);
}
}
break;
default:
break;
}
return boxs;
}
//获得旋转方向
function getDirection(vector3){
var direction;
//判断差向量和x、y、z轴的夹角
var xAngle = vector3.angleTo(XLine);
var xAngleAd = vector3.angleTo(XLineAd);
var yAngle = vector3.angleTo(YLine);
var yAngleAd = vector3.angleTo(YLineAd);
var zAngle = vector3.angleTo(ZLine);
var zAngleAd = vector3.angleTo(ZLineAd);
var minAngle = min([xAngle,xAngleAd,yAngle,yAngleAd,zAngle,zAngleAd]).value;//最小夹角
switch(minAngle){
case xAngle:
direction = 0;//向x轴正方向旋转90度（还要区分是绕z轴还是绕y轴）
if(normalize.equals(YLine)){
direction = direction+0.1;//绕z轴顺时针
}else if(normalize.equals(YLineAd)){
direction = direction+0.2;//绕z轴逆时针
}else if(normalize.equals(ZLine)){
direction = direction+0.3;//绕y轴逆时针
}else{
direction = direction+0.4;//绕y轴顺时针
}
break;
case xAngleAd:
direction = 1;//向x轴反方向旋转90度
if(normalize.equals(YLine)){
direction = direction+0.1;//绕z轴逆时针
}else if(normalize.equals(YLineAd)){
direction = direction+0.2;//绕z轴顺时针
}else if(normalize.equals(ZLine)){
direction = direction+0.3;//绕y轴顺时针
}else{
direction = direction+0.4;//绕y轴逆时针
}
break;
case yAngle:
direction = 2;//向y轴正方向旋转90度
if(normalize.equals(ZLine)){
direction = direction+0.1;//绕x轴逆时针
}else if(normalize.equals(ZLineAd)){
direction = direction+0.2;//绕x轴顺时针
}else if(normalize.equals(XLine)){
direction = direction+0.3;//绕z轴逆时针
}else{
direction = direction+0.4;//绕z轴顺时针
}
break;
case yAngleAd:
direction = 3;//向y轴反方向旋转90度
if(normalize.equals(ZLine)){
direction = direction+0.1;//绕x轴顺时针