VRET/arkit_compat_test_babylon.html at main · TLTMedia/VRET · GitHub

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
<!doctype html>
<html>
<head>
  <meta charset="utf-8"/>
  <title>Babylon.js VRM 1.0 ARKit Test</title>
  <meta name="viewport" content="width=device-width,initial-scale=1"/>
  <script src="https://preview.babylonjs.com/babylon.js"></script>
  <script src="https://preview.babylonjs.com/loaders/babylonjs.loaders.js"></script>
  <style>
    html, body, #renderCanvas { width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden; background: #111; }
    #info {
      position: fixed; top: 20px; left: 20px;
      color: white; font-family: monospace;
      background: rgba(0,0,0,0.8); padding: 15px; border-radius: 5px;
      pointer-events: none; font-size: 1.2em; z-index: 100;
    }
    .highlight { color: #00ff00; font-weight: bold; }
    .category  { color: #ffaa00; font-weight: bold; }
    #controls {
      position: fixed; bottom: 20px; left: 20px;
      background: rgba(0,0,0,0.8); padding: 15px; border-radius: 5px;
      z-index: 100; color: white; font-family: monospace;
    }
    select {
      background: #333; color: white; border: 1px solid #666;
      padding: 5px; font-family: monospace; margin: 5px;
    }
  </style>
</head>
<body>
  <canvas id="renderCanvas"></canvas>

  <div id="info">
    <div>VRM 1.0 Expression Test — Babylon.js</div>
    <div id="status">Loading model…</div>
    <div id="current-shape" class="highlight"></div>
    <div id="shape-count"></div>
  </div>

  <div id="controls">
    <div>Filter:
      <select id="modeSelect">
        <option value="all">All Expressions</option>
        <option value="arkit">ARKit Only</option>
        <option value="vrm0">VRM 0.x Basic</option>
      </select>
    </div>
    <div>Speed:
      <select id="speedSelect">
        <option value="2.0">Slow</option>
        <option value="1.5" selected>Normal</option>
        <option value="1.0">Fast</option>
        <option value="0.5">Very Fast</option>
      </select>
    </div>
  </div>

  <script type="module">
    // Monkey-patch: AnimatorAvatar compatibility
    BABYLON.TransformNode.prototype.getTotalVertices ??= function() { return 0; };

    const VRM_FILE = 'models/AIAN/AIAN_F_1_Busi.vrm';

    const ARKIT_NAMES = [
      'eyeBlinkLeft','eyeBlinkRight','eyeWideLeft','eyeWideRight','eyeSquintLeft','eyeSquintRight',
      'jawOpen','jawForward','jawLeft','jawRight',
      'mouthClose','mouthFunnel','mouthPucker','mouthLeft','mouthRight',
      'mouthSmileLeft','mouthSmileRight','mouthFrownLeft','mouthFrownRight',
      'mouthDimpleLeft','mouthDimpleRight','mouthStretchLeft','mouthStretchRight',
      'mouthUpperUpLeft','mouthUpperUpRight','mouthLowerDownLeft','mouthLowerDownRight',
      'mouthPressLeft','mouthPressRight',
      'browDownLeft','browDownRight','browOuterUpLeft','browOuterUpRight','browInnerUp',
      'cheekPuff','noseSneerLeft','noseSneerRight'
    ];

    const VRM0_NAMES = ['aa','ih','ou','ee','oh','blink','happy','angry','sad','relaxed','neutral'];

    // ---------------------------------------------------------------------------
    // DOM
    // ---------------------------------------------------------------------------
    const statusEl       = document.getElementById('status');
    const currentShapeEl = document.getElementById('current-shape');
    const shapeCountEl   = document.getElementById('shape-count');
    const modeSelect     = document.getElementById('modeSelect');
    const speedSelect    = document.getElementById('speedSelect');

    // ---------------------------------------------------------------------------
    // Load VRM loader
    // ---------------------------------------------------------------------------
    await new Promise((resolve, reject) => {
      const s = document.createElement('script');
      s.src = 'https://xuhuisheng.github.io/babylonjs-vrm/babylon-vrm-loader.js';
      s.onload = resolve; s.onerror = reject;
      document.head.appendChild(s);
    });

    // ---------------------------------------------------------------------------
    // Scene setup
    // ---------------------------------------------------------------------------
    const canvas = document.getElementById('renderCanvas');
    const engine = new BABYLON.Engine(canvas, true);
    const scene = new BABYLON.Scene(engine);

    // Camera focused on face
    const camera = new BABYLON.ArcRotateCamera('cam', Math.PI / 2, Math.PI / 2 - 0.12, 1.2,
      new BABYLON.Vector3(0, 1.55, 0), scene);
    camera.attachControl(canvas, true);

    new BABYLON.HemisphericLight('hemi', new BABYLON.Vector3(0, 1, 0), scene);
    const dirLight = new BABYLON.DirectionalLight('dir', new BABYLON.Vector3(-1, -2, -1), scene);
    dirLight.intensity = 0.5;
    const fillLight = new BABYLON.PointLight('fill', new BABYLON.Vector3(0, 1.6, -1), scene);
    fillLight.intensity = 0.6;

    // ---------------------------------------------------------------------------
    // Load VRM
    // ---------------------------------------------------------------------------
    statusEl.textContent = 'Loading VRM 1.0…';
    try {
        await BABYLON.ImportMeshAsync(VRM_FILE, scene);
    } catch (e) {
        statusEl.textContent = 'ERROR loading model: ' + e.message;
        throw e;
    }

    const vrmManager = scene.metadata?.vrmManagers?.[0];
    if (!vrmManager) {
        statusEl.textContent = 'ERROR: VRM manager not found';
        throw new Error('VRM manager not found');
    }

    console.log('[Test] vrmManager:', vrmManager);

    // VRM 1.0 Expression Manager discovery
    let expressionManager = vrmManager.expressionManager;
    if (!expressionManager && vrmManager.ext10) {
        expressionManager = vrmManager.ext10.expressionManager;
    }

    if (!expressionManager) {
        console.warn('[Test] Standard expression manager not found. Scanning metadata...');
        // If the loader failed to initialize the manager, we can sometimes find it in ext10
        if (vrmManager.ext10) {
            console.log('[Test] ext10 keys:', Object.keys(vrmManager.ext10));
        }
    }

    let allExpressions = [];
    if (expressionManager && typeof expressionManager.getExpressionList === 'function') {
        allExpressions = expressionManager.getExpressionList();
    } else {
        // Fallback 1: ext10 IS the VRM 1.0 data directly (no .vrm sub-property).
        // ext10.expressions.preset has VRM 1.0 preset names (aa, blink, blinkLeft…)
        // ext10.expressions.custom has ARKit-named custom expressions.
        const vrm1 = vrmManager.ext10;
        if (vrm1 && vrm1.expressions) {
            if (vrm1.expressions.preset) allExpressions.push(...Object.keys(vrm1.expressions.preset));
            if (vrm1.expressions.custom) allExpressions.push(...Object.keys(vrm1.expressions.custom));
            console.log('[Test] Built expression list from ext10.expressions:', allExpressions.length);
        }

        // Supplement: some ARKit names (e.g. eyeBlinkLeft/Right) are stored under
        // different VRM 1.0 preset keys (blinkLeft/Right) but the mesh still has
        // a morph target with the original ARKit name. Add any ARKIT_NAMES or
        // VRM0_NAMES morph targets not already in the list.
        const nameSet = new Set(allExpressions);
        for (const mesh of scene.meshes) {
            const mgr = mesh.morphTargetManager;
            if (!mgr) continue;
            for (let i = 0; i < mgr.numTargets; i++) {
                const name = mgr.getTarget(i).name;
                if (name && !nameSet.has(name) &&
                    (ARKIT_NAMES.includes(name) || VRM0_NAMES.includes(name))) {
                    allExpressions.push(name);
                    nameSet.add(name);
                }
            }
        }
    }

    if (allExpressions.length === 0) {
        // Last resort: full morph target scan (picks up all 100+ internal shapes).
        const seen = new Set();
        for (const mesh of scene.meshes) {
            const mgr = mesh.morphTargetManager;
            if (!mgr) continue;
            for (let i = 0; i < mgr.numTargets; i++) {
                const name = mgr.getTarget(i).name;
                if (name && !seen.has(name)) { seen.add(name); allExpressions.push(name); }
            }
        }
        console.log('[Test] Last resort: full morph target scan');
    }

    if (allExpressions.length === 0) {
        statusEl.textContent = 'ERROR: No expressions found';
        throw new Error('No expressions found');
    }

    console.log('[Test] Available expressions:', allExpressions);
    shapeCountEl.textContent = `Total expressions in VRM: ${allExpressions.length}`;
    statusEl.textContent = 'Ready. Cycling expressions…';

    // ---------------------------------------------------------------------------
    // Build morph bind map from ext10.expressions for index-based setting.
    // The loader stores morphTargetBinds as {node: gltfNodeIdx, index: morphIdx}.
    // vrmManager.transformNodeCache maps gltfNodeIdx → TransformNode (Babylon mesh).
    // ---------------------------------------------------------------------------
    const morphBindMap = new Map(); // expression name → [{target, weight}]
    if (vrmManager.ext10?.expressions) {
        const buildBinds = (expr) => {
            const binds = expr?.morphTargetBinds;
            if (!binds?.length) return [];
            return binds.flatMap(b => {
                const tn = vrmManager.transformNodeCache?.[b.node];
                if (!tn) return [];
                const mesh = scene.meshes.find(m => m.name === tn.name && m.morphTargetManager);
                if (!mesh) return [];
                const target = mesh.morphTargetManager.getTarget(b.index);
                return target ? [{ target, weight: b.weight }] : [];
            });
        };
        for (const [key, expr] of Object.entries(vrmManager.ext10.expressions.preset ?? {})) {
            const binds = buildBinds(expr);
            if (binds.length) morphBindMap.set(key, binds);
        }
        for (const [key, expr] of Object.entries(vrmManager.ext10.expressions.custom ?? {})) {
            const binds = buildBinds(expr);
            if (binds.length) morphBindMap.set(key, binds);
        }
        console.log('[Test] Morph bind map:', morphBindMap.size, 'entries');
    }

    // ---------------------------------------------------------------------------
    // Teeth mesh — jaw-related ARKit shapes need a companion shape on h_TeethDown.
    // The VRM expression binds only cover the face mesh; teeth are a separate mesh
    // with different morph target names (no h_teeth. prefix in VRM 1.0 export).
    // ---------------------------------------------------------------------------
    const TEETH_SHAPE_MAP = {
        // Jaw openers
        'jawOpen':     't_MouthOpen_h',
        'mouthFunnel': 't_Shout_h',
        'mouthClose':  't_MPB_h',
        'jawLeft':     't_Ljaw_h',
        'jawRight':    't_Rjaw_h',
        'jawForward':  't_JawFront_h',
        // VRM0 visemes
        'aa':          't_AE_AA_h',
        'ih':          't_TD_I_h',
        'ou':          't_UH_OO_h',
        'oh':          't_AO_a_h',
        'ee':          't_Ax_E_h',
    };
    const teethMesh = scene.meshes.find(m => m.name === 'h_TeethDown');

    // Pre-cache teeth morph targets by name for O(1) lookup
    const teethTargetByName = new Map();
    if (teethMesh?.morphTargetManager) {
        for (let i = 0; i < teethMesh.morphTargetManager.numTargets; i++) {
            const t = teethMesh.morphTargetManager.getTarget(i);
            teethTargetByName.set(t.name, t);
        }
    }

    // ---------------------------------------------------------------------------
    // SetValue utility — index-based via morphBindMap, name-scan fallback,
    // plus teeth mesh companion shape
    // ---------------------------------------------------------------------------
    const setExprValue = (name, value) => {
        if (expressionManager?.setValue) {
            expressionManager.setValue(name, value);
        } else {
            const binds = morphBindMap.get(name);
            if (binds) {
                binds.forEach(b => { b.target.influence = value * b.weight; });
            } else {
                scene.meshes.forEach(m => {
                    if (m.morphTargetManager) {
                        for (let i = 0; i < m.morphTargetManager.numTargets; i++) {
                            const target = m.morphTargetManager.getTarget(i);
                            if (target.name === name) target.influence = value;
                        }
                    }
                });
            }
        }

        // Drive teeth companion shape (face VRM binds don't cover the teeth mesh)
        const teethTargetName = TEETH_SHAPE_MAP[name];
        if (teethTargetName) {
            const t = teethTargetByName.get(teethTargetName);
            if (t) t.influence = value;
        }
    };

    // ---------------------------------------------------------------------------
    // Filtering
    // ---------------------------------------------------------------------------
    function getFilteredExpressions() {
        const mode = modeSelect.value;
        if (mode === 'arkit') return allExpressions.filter(e => ARKIT_NAMES.includes(e));
        if (mode === 'vrm0')  return allExpressions.filter(e => VRM0_NAMES.includes(e));
        return allExpressions;
    }

    // ---------------------------------------------------------------------------
    // Tick — sine-wave cycling
    // ---------------------------------------------------------------------------
    let currentIndex = 0;
    let elapsed = 0;
    let lastMs = performance.now();

    scene.onBeforeRenderObservable.add(() => {
      const now = performance.now();
      const dt  = (now - lastMs) / 1000;
      lastMs = now;

      const duration = parseFloat(speedSelect.value);
      const list = getFilteredExpressions();
      if (list.length === 0) return;

      elapsed += dt;

      if (elapsed > duration) {
        elapsed = 0;
        setExprValue(list[currentIndex], 0);
        currentIndex = (currentIndex + 1) % list.length;
      }

      const value = Math.max(0, Math.sin(Math.PI * (elapsed / duration)));
      const name  = list[currentIndex];

      setExprValue(name, value);

      const type = ARKIT_NAMES.includes(name) ? 'ARKIT' : (VRM0_NAMES.includes(name) ? 'VRM0' : 'CUSTOM');
      currentShapeEl.innerHTML =
        `<span class="category">${type}</span>: ${name} : ${value.toFixed(2)}`;
    });

    modeSelect.addEventListener('change', () => {
      allExpressions.forEach(e => setExprValue(e, 0));
      currentIndex = 0;
      elapsed = 0;
    });

    // ---------------------------------------------------------------------------
    // Render loop
    // ---------------------------------------------------------------------------
    engine.runRenderLoop(() => scene.render());
    window.addEventListener('resize', () => engine.resize());

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