File size: 39,545 Bytes
015a372
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Brain Motion — SVG Video Studio + Color Grade</title>
<style>
  :root{
    color-scheme: dark;
    --bg:#090b11;
    --panel:#131826f2;
    --panel-2:#1b2231;
    --line:#2a3446;
    --text:#eef2fb;
    --muted:#96a3b8;
    --accent:#8d7eff;
    --accent-2:#6358d6;
    --radius:18px;
  }
  *{box-sizing:border-box}
  body{
    margin:0; min-height:100vh; background:var(--bg); color:var(--text);
    font:14px/1.5 Inter,system-ui,Segoe UI,Roboto,sans-serif;
    overflow-x:hidden;
  }
  body:before,body:after{
    content:""; position:fixed; width:70vw; height:70vw; border-radius:50%; filter:blur(90px); opacity:.18; pointer-events:none; z-index:-1;
  }
  body:before{ left:-20vw; top:-20vw; background:radial-gradient(circle at 30% 30%, #8d7eff, transparent 60%)}
  body:after{ right:-15vw; bottom:-10vw; background:radial-gradient(circle at 30% 30%, #3de4c8, #5b6cff 60%)}
  .app{ width:min(1480px,100%); margin:auto; padding:22px 22px 28px}
  .topbar{ display:flex; gap:16px; align-items:center; margin-bottom:18px}
  .logo{
    width:48px; height:48px; border-radius:14px; display:grid; place-items:center;
    background:conic-gradient(from 180deg, #a99cff, #6e64ff, #48e6c2, #a99cff);
    box-shadow:0 8px 30px #7a6dff55; font-size:22px; color:white; flex:0 0 auto
  }
  h1{ margin:0; font-size:clamp(20px,3vw,30px); letter-spacing:-.04em; line-height:1.1}
  .subtitle{ margin:4px 0 0; color:var(--muted)}
  .workspace{ display:grid; grid-template-columns:360px minmax(0,1fr); gap:18px; align-items:start}
  .panel,.stage{ border:1px solid var(--line); border-radius:var(--radius); background:var(--panel); backdrop-filter: blur(18px)}
  .panel{ padding:16px 16px 10px; max-height:calc(100vh - 96px); overflow:auto}
  .stage{ padding:14px}
  .section{ padding:14px 0 16px; border-top:1px solid #222c3b}
  .section:first-child{ border-top:0; padding-top:4px}
  h2{ margin:0 0 10px; font-size:13px; letter-spacing:.14em; text-transform:uppercase; color:#c8d0de}
  .btn{
    min-height:38px; padding:8px 12px; border:1px solid var(--line); border-radius:11px;
    background:var(--panel-2); color:var(--text); cursor:pointer; transition:.15s; font-weight:600
  }
  .btn:hover:not(:disabled){ border-color:#7b72e0; background:#252f42}
  .btn.primary{ background:var(--accent-2); border-color:var(--accent-2); color:white}
  .btn.primary:hover{ background:#756ae8}
  .btn:disabled{ opacity:.45; cursor:not-allowed}
  .button-row{ display:flex; flex-wrap:wrap; gap:8px}
  .small-note,.status,.icon-status{ color:var(--muted); font-size:12px; line-height:1.4}
  .icon-status{ min-height:18px; margin:8px 0 0; overflow-wrap:anywhere}
  .control{ margin:12px 0}
  .control-label{ display:flex; justify-content:space-between; gap:10px; margin-bottom:5px; color:#d6deea; font-size:13px}
  .control-label output{ color:#b8aaff; font-variant-numeric:tabular-nums}
  input[type=range]{ width:100%; accent-color:var(--accent)}
  select,input[type=number]{ width:100%; min-height:38px; padding:7px 10px; border:1px solid var(--line); border-radius:10px; background:#101522; color:var(--text)}
  input[type=color]{ width:46px; height:34px; padding:2px; border:1px solid var(--line); border-radius:8px; background:#101522}
  .toggle-row{ display:flex; flex-wrap:wrap; gap:12px; margin:10px 0}
  .toggle{ display:flex; gap:8px; align-items:center; color:#d6deea}
  .toggle input{ accent-color:var(--accent)}
  .color-row{ display:flex; justify-content:space-between; align-items:center; gap:10px}
  .export-grid{ display:grid; grid-template-columns:1fr 1fr; gap:8px}
  .export-grid .btn{ min-height:48px}
  .preview{
    position:relative; display:grid; place-items:center; min-height:360px; overflow:hidden;
    border:1px solid #2d384a; border-radius:14px;
    background-color:#10141c;
    background-image: linear-gradient(45deg,#1a2130 25%,transparent 25%), linear-gradient(-45deg,#1a2130 25%,transparent 25%), linear-gradient(45deg,transparent 75%,#1a2130 75%), linear-gradient(-45deg,transparent 75%,#1a2130 75%);
    background-size:22px 22px; background-position:0 0,0 11px,11px -11px,-11px 0
  }
  canvas{ display:block; width:100%; height:auto; max-height:72vh; object-fit:contain}
  .placeholder{ position:absolute; padding:20px; text-align:center; color:var(--muted); pointer-events:none}
  .timeline{ display:grid; grid-template-columns:auto 1fr auto; gap:10px; align-items:center; margin-top:12px}
  .time-label{ min-width:78px; color:var(--muted); font-size:12px; font-variant-numeric:tabular-nums}
  .hidden-input,#sourceVideo{ display:none}
  .chip{ display:inline-flex; align-items:center; gap:6px; padding:4px 8px; border-radius:999px; background:#1e2635; border:1px solid #2a3446; font-size:11px; color:#b9c4d6}
  @media(max-width:980px){ .workspace{ grid-template-columns:1fr} .panel{ max-height:none} .preview{ min-height:240px} }
</style>
</head>
<body>
<div class="app">
  <header class="topbar">
    <div class="logo">✦</div>
    <div>
      <h1>Brain Motion — SVG Video Studio</h1>
      <p class="subtitle">Video → SVG cells with transparent export + full color grading. Works as a static site.</p>
    </div>
    <span class="chip">Fable Edition • Color Grade</span>
  </header>

  <div class="workspace">
    <aside class="panel">
      <section class="section">
        <h2>1. Media</h2>
        <div class="button-row">
          <button class="btn primary" id="uploadVideoBtn" data-lock>Choose video / image</button>
          <button class="btn" id="addSvgBtn" data-lock>Add SVGs</button>
          <button class="btn" id="clearSvgBtn" data-lock>Clear</button>
        </div>
        <input class="hidden-input" id="videoInput" type="file" accept="video/*,image/*">
        <input class="hidden-input" id="svgInput" type="file" accept=".svg,image/svg+xml" multiple>
        <video id="sourceVideo" playsinline muted></video>
        <p class="icon-status" id="iconStatus">No SVGs — fallback shapes will be used.</p>
        <p class="small-note">Drop any number of SVG files. Each cell cycles through them. You can also drop an image — it will be treated as a still.</p>
      </section>

      <section class="section">
        <h2>2. Cells</h2>
        <div class="control"><label class="control-label" for="cellSize"><span>Spacing</span><output id="cellValue">14 px</output></label><input id="cellSize" data-lock type="range" min="6" max="40" value="14"></div>
        <div class="control"><label class="control-label" for="scale"><span>Size</span><output id="scaleValue">0.95</output></label><input id="scale" data-lock type="range" min="0.25" max="1.8" step="0.05" value="0.95"></div>
        <div class="control"><label class="control-label" for="gap"><span>Gap</span><output id="gapValue">1 px</output></label><input id="gap" data-lock type="range" min="0" max="12" step="0.5" value="1"></div>
        <div class="control"><label class="control-label" for="sizeMode">Size follows</label><select id="sizeMode" data-lock><option value="bright">Bright = larger</option><option value="dark">Dark = larger</option></select></div>
        <div class="control"><label class="control-label" for="fallbackShape">Fallback shape</label><select id="fallbackShape" data-lock><option value="circle">Circle</option><option value="square">Square</option><option value="triangle">Triangle</option><option value="star">Star</option><option value="diamond">Diamond</option><option value="cross">Cross</option></select></div>
        <div class="control"><label class="control-label" for="colorMode">SVG tint</label><select id="colorMode" data-lock><option value="sample">Tint to video color</option><option value="custom">Custom Color / Palette</option><option value="shadesBlack">Shades of Black</option><option value="white">White</option><option value="native">Keep SVG colors</option></select></div>
        <div class="color-row" id="customColorRow" style="margin:8px 0; display:none"><label for="customColor">Tint color</label><input id="customColor" data-lock type="color" value="#050505"></div>
        <div class="toggle-row"><label class="toggle"><input id="rotate" data-lock type="checkbox"> Rotate by luma</label></div>
      </section>

      <section class="section">
        <h2>3. Color Grading</h2>
        <div class="control"><label class="control-label" for="gradePreset">Preset</label><select id="gradePreset" data-lock>
          <option value="neutral">Neutral</option>
          <option value="warmFilm">Warm Film</option>
          <option value="coolTech">Cool Tech</option>
          <option value="cyberpunk">Cyberpunk</option>
          <option value="fable">Fable Pastel</option>
          <option value="sunset">Sunset</option>
          <option value="bwHigh">B&W High Contrast</option>
        </select></div>
        <div class="toggle-row">
          <label class="toggle"><input id="enableGrade" data-lock type="checkbox" checked> Enable grading</label>
          <button class="btn" id="resetGrade" data-lock>Reset</button>
        </div>

        <div class="control"><label class="control-label" for="exposure"><span>Exposure</span><output id="exposureValue">0</output></label><input id="exposure" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="brightness"><span>Brightness</span><output id="brightnessValue">0</output></label><input id="brightness" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="contrast"><span>Contrast</span><output id="contrastValue">0</output></label><input id="contrast" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="saturation"><span>Saturation</span><output id="saturationValue">100%</output></label><input id="saturation" data-lock type="range" min="0" max="200" value="100"></div>
        <div class="control"><label class="control-label" for="hue"><span>Hue shift</span><output id="hueValue">0°</output></label><input id="hue" data-lock type="range" min="-180" max="180" value="0"></div>
        <div class="control"><label class="control-label" for="temperature"><span>Temperature</span><output id="temperatureValue">0</output></label><input id="temperature" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="tint"><span>Tint (G/M)</span><output id="tintValue">0</output></label><input id="tint" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="vibrance"><span>Vibrance</span><output id="vibranceValue">0</output></label><input id="vibrance" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="highlights"><span>Highlights</span><output id="highlightsValue">0</output></label><input id="highlights" data-lock type="range" min="-100" max="100" value="0"></div>
        <div class="control"><label class="control-label" for="shadows"><span>Shadows</span><output id="shadowsValue">0</output></label><input id="shadows" data-lock type="range" min="-100" max="100" value="0"></div>
        <p class="small-note">Grading is applied before cell sampling, so it affects tint + size logic.</p>
      </section>

      <section class="section">
        <h2>4. Background & Export</h2>
        <div class="toggle-row"><label class="toggle"><input id="transparent" data-lock type="checkbox" checked> Transparent bg</label></div>
        <div class="color-row"><label for="bgColor">Opaque bg color</label><input id="bgColor" data-lock type="color" value="#10141b"></div>
        <div class="control"><label class="control-label" for="backgroundMode">Cut out</label><select id="backgroundMode" data-lock><option value="dark">Dark pixels</option><option value="light">Light pixels</option><option value="none">None</option></select></div>
        <div class="control"><label class="control-label" for="cutoff"><span>Cut threshold</span><output id="cutoffValue">5%</output></label><input id="cutoff" data-lock type="range" min="0" max="95" value="5"></div>
        <div class="control"><label class="control-label" for="outputWidth">Output width</label><input id="outputWidth" data-lock type="number" min="240" max="1280" step="80" value="640"></div>
        <div class="control"><label class="control-label" for="duration">Export seconds</label><input id="duration" data-lock type="number" min="0.5" max="15" step="0.5" value="4"></div>
        <div class="control"><label class="control-label" for="fps">Export FPS</label><input id="fps" data-lock type="number" min="4" max="20" step="1" value="12"></div>
        <div class="button-row" style="margin:12px 0 8px"><button class="btn" id="playPause" disabled data-lock>Play</button><button class="btn" id="saveFrame" data-lock>Save PNG</button></div>
        <div class="export-grid">
          <button class="btn primary" id="exportSvg" disabled data-lock>Animated SVG</button>
          <button class="btn" id="exportGif" disabled data-lock>GIF</button>
          <button class="btn" id="exportWebm" disabled data-lock>WebM</button>
          <button class="btn" id="exportMp4" disabled data-lock>MP4</button>
        </div>
        <p class="small-note">GIF = 1-bit transparency. MP4 = always opaque. WebM alpha = browser dependent.</p>
      </section>
    </aside>

    <section class="stage">
      <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:10px">
        <h2 style="margin:0">Preview</h2><span class="small-note">Checker = transparent</span>
      </div>
      <div class="preview" id="previewBox">
        <canvas id="canvas" width="640" height="360"></canvas>
        <div class="placeholder" id="placeholder">Choose a video or image.<br>Add SVG icons to use them as cells.</div>
      </div>
      <div class="timeline">
        <button class="btn" id="timelinePlay" disabled data-lock>Play</button>
        <input id="seek" type="range" min="0" max="1000" value="0" disabled data-lock>
        <span class="time-label" id="timeLabel">0:00 / 0:00</span>
      </div>
      <p class="status" id="status">Ready.</p>
    </section>
  </div>
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/gif.js/0.2.0/gif.js"></script>
<script>

(() => {

'use strict';

const $ = id => document.getElementById(id);

const video = $('sourceVideo');

const canvas = $('canvas');

const ctx = canvas.getContext('2d',{alpha:true});

const sampleCanvas = document.createElement('canvas');

const sampleCtx = sampleCanvas.getContext('2d',{willReadFrequently:true});

const tintCanvas = document.createElement('canvas'); tintCanvas.width=32; tintCanvas.height=32;

const tintCtx = tintCanvas.getContext('2d');

let videoUrl=null, svgAssets=[], busy=false, recordingOpaque=false, lastRenderedTime=-1;

let sourceImage=null, isImageMode=false;



const GRADE_PRESETS={

 neutral:{exposure:0,brightness:0,contrast:0,saturation:100,hue:0,temperature:0,tint:0,vibrance:0,highlights:0,shadows:0},

 warmFilm:{exposure:5,brightness:4,contrast:8,saturation:110,hue:0,temperature:32,tint:-6,vibrance:18,highlights:-8,shadows:14},

 coolTech:{exposure:0,brightness:0,contrast:14,saturation:92,hue:4,temperature:-38,tint:8,vibrance:6,highlights:0,shadows:8},

 cyberpunk:{exposure:8,brightness:2,contrast:22,saturation:145,hue:-18,temperature:8,tint:-14,vibrance:32,highlights:-12,shadows:10},

 fable:{exposure:6,brightness:8,contrast:-8,saturation:86,hue:2,temperature:14,tint:4,vibrance:-12,highlights:-14,shadows:12},

 sunset:{exposure:10,brightness:6,contrast:12,saturation:128,hue:-8,temperature:58,tint:-8,vibrance:22,highlights:-10,shadows:16},

 bwHigh:{exposure:4,brightness:2,contrast:38,saturation:0,hue:0,temperature:0,tint:0,vibrance:0,highlights:-6,shadows:10}

};



function setStatus(m){ $('status').textContent=m }

function clamp(v,a,b){ return Math.max(a,Math.min(b,v)) }

function clamp01(v){ return Math.max(0,Math.min(1,v)) }



function rgb01ToHsl(r,g,b){

  const max=Math.max(r,g,b), min=Math.min(r,g,b);

  let h=0,s=0,l=(max+min)/2;

  if(max!==min){

    const d=max-min;

    s=l>0.5? d/(2-max-min): d/(max+min);

    switch(max){

      case r: h=(g-b)/d + (g<b?6:0); break;

      case g: h=(b-r)/d +2; break;

      case b: h=(r-g)/d +4; break;

    }

    h/=6;

  }

  return [h,s,l];

}

function hslToRgb01(h,s,l){

  let r,g,b;

  if(s===0){ r=g=b=l; }

  else{

    const hue2rgb=(p,q,t)=>{ if(t<0)t+=1; if(t>1)t-=1; if(t<1/6)return p+(q-p)*6*t; if(t<1/2)return q; if(t<2/3)return p+(q-p)*(2/3-t)*6; return p; };

    const q=l<0.5? l*(1+s): l+s-l*s; const p=2*l-q;

    r=hue2rgb(p,q,h+1/3); g=hue2rgb(p,q,h); b=hue2rgb(p,q,h-1/3);

  }

  return [r,g,b];

}

function applyGrading(r,g,b,o){

  let R=r/255,G=g/255,B=b/255;

  const expFactor=Math.pow(2,o.exposure/100);

  R*=expFactor; G*=expFactor; B*=expFactor;

  const bright=o.brightness/100*0.35; R+=bright; G+=bright; B+=bright;

  const temp=o.temperature/100;

  if(temp>0){ R+=temp*0.18; G+=temp*0.04; B-=temp*0.14; } else { R+=temp*0.10; B-=temp*0.18; }

  const tint=o.tint/100; G+=tint*0.14; R-=tint*0.05; B-=tint*0.05;

  const cf=(259*(o.contrast+255))/(255*(259-o.contrast));

  R=cf*(R-0.5)+0.5; G=cf*(G-0.5)+0.5; B=cf*(B-0.5)+0.5;

  const luma=0.299*R+0.587*G+0.114*B;

  const sh=o.shadows/100, hi=o.highlights/100;

  if(luma<0.5){ const f=(0.5-luma)*1.6; R+=sh*f*0.22; G+=sh*f*0.22; B+=sh*f*0.22; }

  else { const f=(luma-0.5)*1.6; R+=hi*f*0.22; G+=hi*f*0.22; B+=hi*f*0.22; }

  let hsl=rgb01ToHsl(clamp01(R),clamp01(G),clamp01(B));

  let h=hsl[0], s=hsl[1], l=hsl[2];

  h=(h+o.hue/360)%1; if(h<0)h+=1;

  s*=(o.saturation/100);

  const vib=o.vibrance/100;

  if(vib!==0){ s+= (1-s)*vib*0.7; }

  s=clamp01(s); l=clamp01(l);

  const rgb=hslToRgb01(h,s,l);

  return [clamp01(rgb[0])*255, clamp01(rgb[1])*255, clamp01(rgb[2])*255];

}

function getGradeOpts(){

  return {

    enabled:$('enableGrade').checked,

    exposure:+$('exposure').value, brightness:+$('brightness').value, contrast:+$('contrast').value,

    saturation:+$('saturation').value, hue:+$('hue').value, temperature:+$('temperature').value,

    tint:+$('tint').value, vibrance:+$('vibrance').value, highlights:+$('highlights').value, shadows:+$('shadows').value

  };

}

function applyPreset(name){

  const p=GRADE_PRESETS[name]; if(!p)return;

  for(const k in p){ const el=$(k); if(el) el.value=p[k]; }

  updateLabels(); renderSafely();

}

function updateLabels(){

  $('cellValue').textContent=`${$('cellSize').value} px`;

  $('scaleValue').textContent=(+$('scale').value).toFixed(2);

  $('gapValue').textContent=`${$('gap').value} px`;

  $('cutoffValue').textContent=`${$('cutoff').value}%`;

  $('exposureValue').textContent=`${$('exposure').value>0?'+':''}${$('exposure').value}`;

  $('brightnessValue').textContent=`${$('brightness').value>0?'+':''}${$('brightness').value}`;

  $('contrastValue').textContent=`${$('contrast').value>0?'+':''}${$('contrast').value}`;

  $('saturationValue').textContent=`${$('saturation').value}%`;

  $('hueValue').textContent=`${$('hue').value}°`;

  $('temperatureValue').textContent=`${$('temperature').value>0?'+':''}${$('temperature').value}`;

  $('tintValue').textContent=`${$('tint').value>0?'+':''}${$('tint').value}`;

  $('vibranceValue').textContent=`${$('vibrance').value>0?'+':''}${$('vibrance').value}`;

  $('highlightsValue').textContent=`${$('highlights').value>0?'+':''}${$('highlights').value}`;

  $('shadowsValue').textContent=`${$('shadows').value>0?'+':''}${$('shadows').value}`;

}

function resizeCanvas(){

  const w = isImageMode ? (sourceImage?.naturalWidth||640) : (video.videoWidth||640);

  const h = isImageMode ? (sourceImage?.naturalHeight||360) : (video.videoHeight||360);

  if(!w||!h)return;

  const wantW=clamp(+$('outputWidth').value||640,240,1280);

  const ratio=Math.min(wantW/w,1280/h);

  const nw=Math.max(1,Math.round(w*ratio)), nh=Math.max(1,Math.round(h*ratio));

  if(canvas.width!==nw||canvas.height!==nh){ canvas.width=nw; canvas.height=nh; sampleCanvas.width=nw; sampleCanvas.height=nh; }

}

function drawAssetCentered(tCtx, asset, box){

  const iw=asset.width||asset.image.naturalWidth||100, ih=asset.height||asset.image.naturalHeight||100;

  const s=Math.min(box/iw,box/ih); tCtx.drawImage(asset.image,-iw*s/2,-ih*s/2,iw*s,ih*s);

}

function drawBuiltin(tCtx,type,size,color){

  const r=size/2; tCtx.fillStyle=color; tCtx.beginPath();

  switch(type){

    case 'square': tCtx.rect(-r,-r,size,size); break;

    case 'triangle': tCtx.moveTo(0,-r); tCtx.lineTo(r,r); tCtx.lineTo(-r,r); tCtx.closePath(); break;

    case 'star': for(let i=0;i<10;i++){ const a=-Math.PI/2+i*Math.PI/5, rad=i%2===0?r:r*0.43, x=Math.cos(a)*rad, y=Math.sin(a)*rad; i? tCtx.lineTo(x,y): tCtx.moveTo(x,y);} tCtx.closePath(); break;

    case 'diamond': tCtx.moveTo(0,-r); tCtx.lineTo(r,0); tCtx.lineTo(0,r); tCtx.lineTo(-r,0); tCtx.closePath(); break;

    case 'cross': tCtx.rect(-r*0.28,-r,r*0.56,size); tCtx.rect(-r,-r*0.28,size,r*0.56); break;

    default: tCtx.arc(0,0,r,0,Math.PI*2);

  } tCtx.fill();

}

function drawTintedAsset(asset,color,size){

  tintCtx.clearRect(0,0,32,32); tintCtx.save(); tintCtx.translate(16,16); drawAssetCentered(tintCtx,asset,30); tintCtx.restore();

  tintCtx.globalCompositeOperation='source-in'; tintCtx.fillStyle=color; tintCtx.fillRect(0,0,32,32); tintCtx.globalCompositeOperation='source-over';

  ctx.drawImage(tintCanvas,-size/2,-size/2,size,size);

}

function syncButtons(){

  const has=isImageMode||!!video.videoWidth;

  $('playPause').disabled=busy||!has||isImageMode;

  $('timelinePlay').disabled=busy||!has||isImageMode;

  $('seek').disabled=busy||!has||isImageMode;

  ['exportSvg','exportGif','exportWebm','exportMp4'].forEach(id=>$(id).disabled=busy||!has);

}

function setBusy(v){ busy=v; document.querySelectorAll('[data-lock]').forEach(el=>el.disabled=v); syncButtons(); }



function renderFrame(forceOpaque=false){

  if(isImageMode){

    if(!sourceImage) return;

    resizeCanvas(); const W=canvas.width,H=canvas.height;

    sampleCtx.drawImage(sourceImage,0,0,W,H);

  } else {

    if(!video.videoWidth||video.readyState<2) return;

    resizeCanvas();

    sampleCtx.drawImage(video,0,0,canvas.width,canvas.height);

  }

  const W=canvas.width,H=canvas.height;

  const pixels=sampleCtx.getImageData(0,0,W,H).data;

  ctx.clearRect(0,0,W,H);

  const isTrans=$('transparent').checked && !forceOpaque;

  if(!isTrans){ ctx.fillStyle=$('bgColor').value; ctx.fillRect(0,0,W,H); }

  const cell=+$('cellSize').value, scaleSet=+$('scale').value, gap=+$('gap').value;

  const cutoff=+$('cutoff').value/100, cols=Math.ceil(W/cell), rows=Math.ceil(H/cell);

  const sizeMode=$('sizeMode').value, bgMode=$('backgroundMode').value, colorMode=$('colorMode').value, rot=$('rotate').checked, fallback=$('fallbackShape').value;

  const grade=getGradeOpts();

  const contrastFactor=(259*(grade.contrast+255))/(255*(259-grade.contrast));



  for(let r=0;r<rows;r++){

    const y=r*cell;

    for(let c=0;c<cols;c++){

      const x=c*cell, sx=Math.min(W-1,Math.floor(x+cell/2)), sy=Math.min(H-1,Math.floor(y+cell/2)), idx=(sy*W+sx)*4;

      const a=pixels[idx+3]/255; if(a<0.04) continue;

      let R=pixels[idx], G=pixels[idx+1], B=pixels[idx+2];

      if(grade.enabled){ [R,G,B]=applyGrading(R,G,B,grade); }

      else { R=clamp(contrastFactor*(R-128)+128,0,255); G=clamp(contrastFactor*(G-128)+128,0,255); B=clamp(contrastFactor*(B-128)+128,0,255); }

      const luma=(0.299*R+0.587*G+0.114*B)/255;

      if(bgMode==='dark'&&luma<cutoff) continue;

      if(bgMode==='light'&&luma>1-cutoff) continue;

      const bright=sizeMode==='dark'?1-luma:luma;

      const size=Math.min(cell*1.8, Math.max(0, cell*scaleSet*(0.12+0.88*bright)-gap));

      const customTint = $('customColor').value || '#050505';

      let col;

      if(colorMode==='white') col = '#ffffff';

      else if(colorMode==='custom') col = customTint;

      else if(colorMode==='shadesBlack') {

        const shade = Math.round(luma * 45);

        col = `rgb(${shade},${shade},${shade})`;

      } else col = `rgb(${Math.round(R)},${Math.round(G)},${Math.round(B)})`;



      const asset=svgAssets.length? svgAssets[(r*cols+c)%svgAssets.length]: null;

      ctx.save(); ctx.translate(x+cell/2,y+cell/2); ctx.globalAlpha=a;

      if(rot) ctx.rotate((luma-0.5)*Math.PI);

      if(asset){ if(colorMode==='native') drawAssetCentered(ctx,asset,size); else drawTintedAsset(asset,col,size); }

      else drawBuiltin(ctx,fallback,size,col);

      ctx.restore();

    }

  }

  if(!isImageMode) lastRenderedTime=video.currentTime;

  $('placeholder').style.display='none';

}

function renderSafely(){ try{ renderFrame(recordingOpaque); }catch(e){ console.error(e); setStatus('Preview error: '+e.message); } }



function sanitizeSvg(src){

  const doc=new DOMParser().parseFromString(src,'image/svg+xml');

  if(doc.querySelector('parsererror')) throw new Error('Invalid SVG');

  const root=doc.documentElement; if(!root||root.localName.toLowerCase()!=='svg') throw new Error('No <svg>');

  const blocked=new Set(['script','foreignobject','iframe','object','embed']);

  for(const el of [...root.querySelectorAll('*')]){

    if(blocked.has(el.localName.toLowerCase())){ el.remove(); continue; }

    for(const at of [...el.attributes]){

      const n=at.name.toLowerCase(), v=at.value.trim();

      if(n.startsWith('on')) el.removeAttributeNode(at);

      else if((n==='href'||n==='xlink:href'||n==='src')&&v&&!v.startsWith('#')&&!/^data:image\//i.test(v)) el.removeAttributeNode(at);

      else if(/url\(\s*(['"]?)(?:https?:|\/\/|file:|javascript:)/i.test(v)) el.removeAttributeNode(at);

    }

  }

  for(const st of [...root.querySelectorAll('style')]) if(/@import|url\(\s*(['"]?)(?:https?:|\/\/|file:)/i.test(st.textContent)) st.remove();

  if(!root.hasAttribute('xmlns')) root.setAttribute('xmlns','http://www.w3.org/2000/svg');

  let vb=root.getAttribute('viewBox')||''; let vals=vb.trim().split(/[\s,]+/).map(Number);

  let vw=100,vh=100;

  if(vals.length===4&&vals.every(Number.isFinite)&&vals[2]>0&&vals[3]>0){ vw=vals[2]; vh=vals[3]; }

  else { vw=parseFloat(root.getAttribute('width'))||100; vh=parseFloat(root.getAttribute('height'))||100; root.setAttribute('viewBox',`0 0 ${vw} ${vh}`); }

  root.setAttribute('width',String(vw)); root.setAttribute('height',String(vh));

  return {text:new XMLSerializer().serializeToString(root), width:vw, height:vh};

}

function loadSvgImage(file,parsed){

  const blob=new Blob([parsed.text],{type:'image/svg+xml;charset=utf-8'}); const url=URL.createObjectURL(blob);

  return new Promise((res,rej)=>{ const img=new Image(); img.onload=()=>res({name:file.name,image:img,url,width:parsed.width,height:parsed.height}); img.onerror=()=>{ URL.revokeObjectURL(url); rej(new Error('Cannot load '+file.name)); }; img.src=url; });

}

function updateIconStatus(){

  if(!svgAssets.length){ $('iconStatus').textContent='No SVGs — fallback shapes.'; return; }

  $('iconStatus').textContent=`${svgAssets.length} SVG(s): ${svgAssets.map(a=>a.name).join(', ')}`;

}

function clearSvg(){ for(const a of svgAssets) URL.revokeObjectURL(a.url); svgAssets=[]; updateIconStatus(); renderSafely(); }



function formatTime(s){ if(!Number.isFinite(s)||s<0)s=0; const m=Math.floor(s/60), sec=Math.floor(s%60); return `${m}:${String(sec).padStart(2,'0')}`; }

function updateTimeline(){ if(!video.videoWidth||!Number.isFinite(video.duration)||video.duration<=0){ $('timeLabel').textContent='0:00 / 0:00'; return;} $('seek').value=String(Math.round(video.currentTime/video.duration*1000)); $('timeLabel').textContent=`${formatTime(video.currentTime)} / ${formatTime(video.duration)}`; }

function seekTo(sec){ return new Promise((res,rej)=>{ const d=video.duration, max=Number.isFinite(d)&&d>0? Math.max(0,d-0.01): Math.max(0,sec); const t=clamp(sec,0,max); if(!video.seeking&&Math.abs(video.currentTime-t)<0.001) return res(); let timer; const fin=()=>{ clearTimeout(timer); video.removeEventListener('seeked',fin); res(); }; video.addEventListener('seeked',fin); timer=setTimeout(fin,8000); try{ video.currentTime=t; }catch(e){ clearTimeout(timer); video.removeEventListener('seeked',fin); rej(e);} }); }

function exportSettings(){ const fps=clamp(Math.round(+$('fps').value||12),4,20), secs=clamp(+$('duration').value||4,0.5,15), fc=Math.max(1,Math.ceil(secs*fps)); return {fps,frameCount:fc,duration:fc/fps}; }

async function captureFrames(onFrame,label){

  if(!video.videoWidth && !isImageMode) throw new Error('Choose media first');

  const st=exportSettings(); const wasPlaying=!isImageMode&&!video.paused; const prev=video.currentTime; const md=Number.isFinite(video.duration)&&video.duration>0? video.duration:null;

  if(!isImageMode) video.pause();

  try{

    for(let i=0;i<st.frameCount;i++){

      if(!isImageMode){

        const time=md? (i/st.fps)%md : i/st.fps; await seekTo(time); await new Promise(r=>requestAnimationFrame(r));

      }

      renderFrame(false); await onFrame(i,{...st,width:canvas.width,height:canvas.height}); setStatus(`${label}: frame ${i+1}/${st.frameCount}`);

    }

    return {...st,width:canvas.width,height:canvas.height};

  } finally {

    if(!isImageMode){ try{ await seekTo(prev);}catch(_){} if(wasPlaying) await video.play().catch(()=>{}); renderSafely(); updateTimeline(); }

  }

}

function downloadBlob(blob,name){ const url=URL.createObjectURL(blob); const a=document.createElement('a'); a.href=url; a.download=name; document.body.appendChild(a); a.click(); a.remove(); setTimeout(()=>URL.revokeObjectURL(url),60000); }

function numberText(v){ return Number(v.toFixed(6)).toString(); }

function makeAnimatedSvg(frames,w,h,fps){

  const c=frames.length, dur=c/fps, durT=numberText(dur);

  const els=frames.map((d,i)=>{

    let anim=''; if(c>1){ let vals,kt; if(i===0){ vals='visible;hidden;hidden'; kt=`0;${numberText(1/c)};1`; } else if(i===c-1){ vals='hidden;visible;hidden'; kt=`0;${numberText(i/c)};1`; } else { vals='hidden;visible;hidden;hidden'; kt=`0;${numberText(i/c)};${numberText((i+1)/c)};1`; } anim=`<animate attributeName="visibility" calcMode="discrete" values="${vals}" keyTimes="${kt}" dur="${durT}s" repeatCount="indefinite"/>`; }

    const vis=i===0?'visible':'hidden'; return `<image x="0" y="0" width="${w}" height="${h}" visibility="${vis}" href="${d}" xlink:href="${d}">${anim}</image>`;

  }).join('\n');

  return `<?xml version="1.0" encoding="UTF-8"?>\n<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="${w}" height="${h}" viewBox="0 0 ${w} ${h}">\n${els}\n</svg>`;

}



$('uploadVideoBtn').addEventListener('click',()=>$('videoInput').click());

$('addSvgBtn').addEventListener('click',()=>$('svgInput').click());

$('videoInput').addEventListener('change',e=>{

  const file=e.target.files&&e.target.files[0]; if(!file)return;

  if(file.type.startsWith('image/')){

    isImageMode=true; const url=URL.createObjectURL(file); const img=new Image();

    img.onload=()=>{ sourceImage=img; resizeCanvas(); $('placeholder').style.display='none'; renderSafely(); syncButtons(); setStatus(`Image loaded: ${img.naturalWidth}×${img.naturalHeight}`); URL.revokeObjectURL(url); };

    img.onerror=()=>setStatus('Cannot read image'); img.src=url;

  } else {

    isImageMode=false; sourceImage=null; video.pause(); if(videoUrl) URL.revokeObjectURL(videoUrl); videoUrl=URL.createObjectURL(file);

    video.src=videoUrl; video.loop=true; video.muted=true; video.load(); $('placeholder').style.display='block'; setStatus(`Loading ${file.name}…`);

  }

  e.target.value='';

});

video.addEventListener('loadedmetadata',()=>{ resizeCanvas(); $('placeholder').style.display='none'; updateTimeline(); renderSafely(); syncButtons(); setStatus(`Video ${video.videoWidth}×${video.videoHeight}`); video.play().catch(()=>setStatus('Video loaded. Press Play.')); });

video.addEventListener('loadeddata',renderSafely); video.addEventListener('seeked',()=>{ renderSafely(); updateTimeline(); }); video.addEventListener('timeupdate',updateTimeline);

video.addEventListener('play',()=>{ $('playPause').textContent='Pause'; $('timelinePlay').textContent='Pause'; });

video.addEventListener('pause',()=>{ $('playPause').textContent='Play'; $('timelinePlay').textContent='Play'; renderSafely(); });

$('svgInput').addEventListener('change',async e=>{

  const files=[...(e.target.files||[])]; e.target.value=''; let added=0;

  for(const f of files){ if(!f.name.toLowerCase().endsWith('.svg')&&f.type!=='image/svg+xml') continue; try{ const parsed=sanitizeSvg(await f.text()); const asset=await loadSvgImage(f,parsed); svgAssets.push(asset); added++; }catch(err){ setStatus(err.message); } }

  updateIconStatus(); renderSafely(); if(added) setStatus(`Added ${added} SVG(s)`);

});

$('clearSvgBtn').addEventListener('click',clearSvg);

function togglePlay(){ if(isImageMode||!video.videoWidth) return; if(video.paused) video.play().catch(()=>setStatus('Cannot play')); else video.pause(); }

$('playPause').addEventListener('click',togglePlay); $('timelinePlay').addEventListener('click',togglePlay);

$('seek').addEventListener('input',e=>{ if(isImageMode||!video.videoWidth||!Number.isFinite(video.duration))return; video.pause(); video.currentTime=(+e.target.value/1000)*video.duration; });



const allControls=['cellSize','scale','gap','sizeMode','fallbackShape','colorMode','customColor','rotate','transparent','bgColor','backgroundMode','cutoff','outputWidth','exposure','brightness','contrast','saturation','hue','temperature','tint','vibrance','highlights','shadows','enableGrade'];

for(const id of allControls){ const el=$(id); if(!el)continue; el.addEventListener('input',()=>{ updateLabels(); renderSafely(); }); el.addEventListener('change',()=>{ updateLabels(); renderSafely(); }); }

$('colorMode').addEventListener('change', e => {

  $('customColorRow').style.display = e.target.value === 'custom' ? 'flex' : 'none';

});

$('gradePreset').addEventListener('change',e=>applyPreset(e.target.value));

$('resetGrade').addEventListener('click',()=>applyPreset('neutral'));



$('saveFrame').addEventListener('click',async()=>{

  if(!canvas.width){ setStatus('No frame'); return; }

  const blob=await new Promise(r=>canvas.toBlob(r,'image/png')); if(!blob){ setStatus('PNG fail'); return; }

  downloadBlob(blob,`brain-${Date.now()}.png`); setStatus('Saved PNG with transparency');

});

$('exportSvg').addEventListener('click',async()=>{

  setBusy(true); setStatus('SVG…');

  try{

    const frames=[]; const meta=await captureFrames(async()=>{ frames.push(canvas.toDataURL('image/png')); },'SVG');

    const svg=makeAnimatedSvg(frames,meta.width,meta.height,meta.fps);

    downloadBlob(new Blob([svg],{type:'image/svg+xml;charset=utf-8'}),`brain-${Date.now()}.svg`);

    setStatus('Animated SVG saved (PNG frames inside SVG)');

  }catch(e){ setStatus('SVG fail: '+e.message); } finally{ setBusy(false); }

});

async function fetchGifWorker(){ const url='https://cdnjs.cloudflare.com/ajax/libs/gif.js/0.2.0/gif.worker.js'; const r=await fetch(url); if(!r.ok) throw new Error('GIF worker download failed'); const t=await r.text(); return URL.createObjectURL(new Blob([t],{type:'application/javascript'})); }

$('exportGif').addEventListener('click',async()=>{

  if(!window.GIF){ setStatus('GIF lib not loaded'); return; }

  setBusy(true); let wUrl=null;

  try{

    setStatus('GIF worker…'); wUrl=await fetchGifWorker();

    const useTrans=$('transparent').checked; const tKey=0xff00ff;

    const opts={workers:2,quality:10,repeat:0,width:canvas.width,height:canvas.height,workerScript:wUrl}; if(useTrans) opts.transparent=tKey;

    const gif=new window.GIF(opts); const gc=document.createElement('canvas'); gc.width=canvas.width; gc.height=canvas.height; const gcCtx=gc.getContext('2d',{willReadFrequently:true});

    const done=new Promise((res,rej)=>{ gif.on('finished',res); gif.on('error',rej); gif.on('progress',p=>setStatus(`GIF ${Math.round(p*100)}%`)); });

    await captureFrames(async(i,meta)=>{

      const fr=ctx.getImageData(0,0,canvas.width,canvas.height); const d=fr.data;

      for(let j=0;j<d.length;j+=4){ if(useTrans&&d[j+3]<128){ d[j]=255; d[j+1]=0; d[j+2]=255; d[j+3]=255; } else { d[j+3]=255; if(useTrans&&d[j]===255&&d[j+1]===0&&d[j+2]===255) d[j+1]=1; } }

      gcCtx.putImageData(fr,0,0); gif.addFrame(gc,{copy:true,delay:Math.max(20,Math.round(1000/meta.fps))}); setStatus(`GIF prep ${i+1}/${meta.frameCount}`);

    },'GIF');

    setStatus('Encoding GIF…'); gif.render(); const blob=await done; downloadBlob(blob,`brain-${Date.now()}.gif`); setStatus('GIF saved');

  }catch(e){ console.error(e); setStatus('GIF fail: '+e.message); } finally{ if(wUrl) URL.revokeObjectURL(wUrl); setBusy(false); }

});

async function exportVideo(kind){

  if(!video.videoWidth && !isImageMode){ setStatus('Choose media'); return; }

  if(!window.MediaRecorder||!canvas.captureStream){ setStatus('Browser no MediaRecorder'); return; }

  const cands=kind==='mp4'? ['video/mp4;codecs=avc1.42E01E','video/mp4;codecs=avc1','video/mp4']: ['video/webm;codecs=vp9','video/webm;codecs=vp8','video/webm'];

  const mime=cands.find(t=>MediaRecorder.isTypeSupported(t)); if(!mime){ setStatus(kind+' not supported, try WebM'); return; }

  setBusy(true); const st=exportSettings(); let stream=null, rec=null;

  try{

    if(!isImageMode){ video.pause(); await seekTo(0); }

    recordingOpaque=kind==='mp4'; renderFrame(recordingOpaque);

    stream=canvas.captureStream(st.fps); rec=new MediaRecorder(stream,{mimeType:mime,videoBitsPerSecond:5000000});

    const chunks=[]; const fin=new Promise((res,rej)=>{ rec.addEventListener('dataavailable',e=>{ if(e.data&&e.data.size) chunks.push(e.data); }); rec.addEventListener('stop',()=>res(new Blob(chunks,{type:rec.mimeType||mime}))); rec.addEventListener('error',e=>rej(e.error||new Error('record fail'))); });

    rec.start(200); if(!isImageMode) await video.play();

    setStatus(`Recording ${kind.toUpperCase()} ${st.duration.toFixed(1)}s…`);

    await new Promise(r=>setTimeout(r,st.duration*1000));

    if(!isImageMode) video.pause(); if(rec.state!=='inactive') rec.stop();

    const blob=await fin; downloadBlob(blob,`brain-${Date.now()}.${kind==='mp4'?'mp4':'webm'}`); setStatus(kind==='mp4'?'MP4 saved (opaque)':'WebM saved');

  }catch(e){ setStatus('Video fail: '+e.message); } finally{

    recordingOpaque=false; if(rec&&rec.state!=='inactive') try{rec.stop();}catch(_){}

    if(stream) stream.getTracks().forEach(t=>t.stop()); setBusy(false); renderSafely();

  }

}

$('exportWebm').addEventListener('click',()=>exportVideo('webm')); $('exportMp4').addEventListener('click',()=>exportVideo('mp4'));



function loop(){ if(!isImageMode&&video.videoWidth&&!video.paused&&video.readyState>=2&&video.currentTime!==lastRenderedTime) renderSafely(); requestAnimationFrame(loop); }

updateLabels(); updateIconStatus(); syncButtons(); requestAnimationFrame(loop);

})();

</script>
</body>
</html>