feat(3d): FBX/GLTF/OBJ 加载器与骨骼动画支持 (#315)
* feat(3d): FBX/GLTF/OBJ 加载器与骨骼动画支持 * chore: 更新 pnpm-lock.yaml * fix: 移除未使用的变量和方法 * fix: 修复 mesh-3d-editor tsconfig 引用路径 * fix: 修复正则表达式 ReDoS 漏洞
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YHH
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328
scripts/debug-fbx-animation.mjs
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328
scripts/debug-fbx-animation.mjs
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/**
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* FBX Animation-Skeleton Debug Script
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* 调试 FBX 动画和骨骼的对应关系
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*/
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import { readFileSync } from 'fs';
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import pako from 'pako';
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const { inflate } = pako;
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const FBX_TIME_SECOND = 46186158000n;
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const filePath = process.argv[2] || 'F:\\MyProject4\\assets\\octopus.fbx';
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console.log(`=== Analyzing: ${filePath} ===\n`);
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const buffer = readFileSync(filePath);
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const view = new DataView(buffer.buffer, buffer.byteOffset, buffer.byteLength);
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// Parse FBX header
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const version = view.getUint32(23, true);
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console.log(`FBX Version: ${version}`);
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const is64Bit = version >= 7500;
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let offset = 27;
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function readNode() {
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const startOffset = offset;
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let endOffset, numProperties, propertyListLen, nameLen;
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if (is64Bit) {
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endOffset = Number(view.getBigUint64(offset, true));
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numProperties = Number(view.getBigUint64(offset + 8, true));
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propertyListLen = Number(view.getBigUint64(offset + 16, true));
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nameLen = view.getUint8(offset + 24);
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offset += 25;
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} else {
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endOffset = view.getUint32(offset, true);
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numProperties = view.getUint32(offset + 4, true);
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propertyListLen = view.getUint32(offset + 8, true);
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nameLen = view.getUint8(offset + 12);
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offset += 13;
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}
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if (endOffset === 0) return null;
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const name = new TextDecoder().decode(buffer.slice(offset, offset + nameLen));
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offset += nameLen;
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// Read properties
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const properties = [];
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const propsEnd = offset + propertyListLen;
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while (offset < propsEnd) {
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const typeCode = String.fromCharCode(buffer[offset]);
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offset++;
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switch (typeCode) {
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case 'Y':
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properties.push(view.getInt16(offset, true));
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offset += 2;
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break;
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case 'C':
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properties.push(buffer[offset] !== 0);
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offset += 1;
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break;
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case 'I':
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properties.push(view.getInt32(offset, true));
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offset += 4;
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break;
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case 'F':
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properties.push(view.getFloat32(offset, true));
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offset += 4;
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break;
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case 'D':
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properties.push(view.getFloat64(offset, true));
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offset += 8;
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break;
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case 'L':
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properties.push(view.getBigInt64(offset, true));
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offset += 8;
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break;
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case 'S':
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case 'R':
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const strLen = view.getUint32(offset, true);
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offset += 4;
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if (typeCode === 'S') {
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properties.push(new TextDecoder().decode(buffer.slice(offset, offset + strLen)));
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} else {
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properties.push(buffer.slice(offset, offset + strLen));
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}
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offset += strLen;
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break;
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case 'f':
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case 'd':
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case 'l':
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case 'i':
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case 'b':
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const arrayLen = view.getUint32(offset, true);
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const encoding = view.getUint32(offset + 4, true);
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const compressedLen = view.getUint32(offset + 8, true);
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offset += 12;
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if (encoding === 0) {
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const elemSize = typeCode === 'd' || typeCode === 'l' ? 8 : 4;
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const arr = [];
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for (let i = 0; i < arrayLen; i++) {
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if (typeCode === 'd') arr.push(view.getFloat64(offset + i * 8, true));
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else if (typeCode === 'f') arr.push(view.getFloat32(offset + i * 4, true));
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else if (typeCode === 'l') arr.push(view.getBigInt64(offset + i * 8, true));
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else if (typeCode === 'i') arr.push(view.getInt32(offset + i * 4, true));
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}
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properties.push({ type: typeCode, data: arr });
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offset += arrayLen * elemSize;
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} else {
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// Compressed - decompress with pako
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const compData = buffer.slice(offset, offset + compressedLen);
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try {
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const decompressed = inflate(compData);
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const elemSize = typeCode === 'd' || typeCode === 'l' ? 8 : 4;
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const dataView = new DataView(decompressed.buffer, decompressed.byteOffset, decompressed.byteLength);
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const arr = [];
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for (let i = 0; i < arrayLen; i++) {
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if (typeCode === 'd') arr.push(dataView.getFloat64(i * 8, true));
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else if (typeCode === 'f') arr.push(dataView.getFloat32(i * 4, true));
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else if (typeCode === 'l') arr.push(dataView.getBigInt64(i * 8, true));
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else if (typeCode === 'i') arr.push(dataView.getInt32(i * 4, true));
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}
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properties.push({ type: typeCode, data: arr });
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} catch (e) {
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properties.push({ type: typeCode, compressed: true, len: arrayLen });
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}
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offset += compressedLen;
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}
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break;
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default:
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offset = propsEnd;
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}
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}
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// Read children
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const children = [];
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while (offset < endOffset) {
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const child = readNode();
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if (child) children.push(child);
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else break;
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}
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offset = endOffset;
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return { name, properties, children };
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}
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// Parse root nodes
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const rootNodes = [];
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while (offset < buffer.length - 100) {
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const node = readNode();
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if (node) rootNodes.push(node);
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else break;
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}
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console.log(`Root nodes: ${rootNodes.map(n => n.name).join(', ')}\n`);
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// Find Objects and Connections
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const objectsNode = rootNodes.find(n => n.name === 'Objects');
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const connectionsNode = rootNodes.find(n => n.name === 'Connections');
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if (!objectsNode || !connectionsNode) {
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console.log('Missing Objects or Connections node!');
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process.exit(1);
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}
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// Parse all connections
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const connections = connectionsNode.children.map(c => ({
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type: c.properties[0].split('\0')[0],
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fromId: c.properties[1],
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toId: c.properties[2],
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property: c.properties[3]?.split?.('\0')[0]
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}));
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// Find Models (bones are usually LimbNode type)
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const models = objectsNode.children
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.filter(n => n.name === 'Model')
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.map(n => ({
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id: n.properties[0],
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name: n.properties[1]?.split?.('\0')[0] || 'Model',
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type: n.properties[2]?.split?.('\0')[0] || ''
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}));
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console.log(`=== MODELS (${models.length}) ===`);
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models.forEach((m, i) => {
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console.log(` [${i}] ID=${m.id}, name="${m.name}", type="${m.type}"`);
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});
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// Find AnimationCurveNodes
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const curveNodes = objectsNode.children
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.filter(n => n.name === 'AnimationCurveNode')
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.map(n => {
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const id = n.properties[0];
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const name = n.properties[1]?.split?.('\0')[0] || '';
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return { id, name };
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});
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console.log(`\n=== ANIMATION CURVE NODES (${curveNodes.length}) ===`);
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// Find which models each AnimationCurveNode targets
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const curveNodeTargets = new Map();
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for (const conn of connections) {
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if (conn.type === 'OP' && conn.property?.includes('Lcl')) {
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// AnimationCurveNode -> Model connection
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const curveNode = curveNodes.find(cn => cn.id === conn.fromId);
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const model = models.find(m => m.id === conn.toId);
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if (curveNode && model) {
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const modelIndex = models.indexOf(model);
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if (!curveNodeTargets.has(conn.toId)) {
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curveNodeTargets.set(conn.toId, {
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modelId: conn.toId,
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modelIndex,
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modelName: model.name,
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properties: []
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});
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}
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curveNodeTargets.get(conn.toId).properties.push({
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curveNodeId: curveNode.id,
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curveNodeName: curveNode.name,
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property: conn.property
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});
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}
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}
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}
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console.log(`Animation targets ${curveNodeTargets.size} models:`);
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for (const [modelId, info] of curveNodeTargets) {
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console.log(` Model[${info.modelIndex}] "${info.modelName}" ID=${modelId}:`);
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for (const p of info.properties) {
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console.log(` - ${p.property} (CurveNode: ${p.curveNodeName})`);
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}
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}
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// Find Deformers (Clusters)
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const clusters = objectsNode.children
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.filter(n => n.name === 'Deformer' && n.properties[2]?.split?.('\0')[0] === 'Cluster')
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.map(n => ({
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id: n.properties[0],
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name: n.properties[1]?.split?.('\0')[0] || 'Cluster'
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}));
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console.log(`\n=== CLUSTERS (Skin Deformers) (${clusters.length}) ===`);
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// Find which models each Cluster is linked to (via Cluster -> Model connection)
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const clusterToBone = new Map();
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// First, let's see all connections involving clusters
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console.log(`\nAll connections involving clusters (first 20):`);
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let clusterConnCount = 0;
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for (const conn of connections) {
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const clusterAsFrom = clusters.find(c => c.id === conn.fromId);
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const clusterAsTo = clusters.find(c => c.id === conn.toId);
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if (clusterAsFrom || clusterAsTo) {
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if (clusterConnCount < 20) {
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const fromName = clusterAsFrom?.name || models.find(m => m.id === conn.fromId)?.name || `ID=${conn.fromId}`;
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const toName = clusterAsTo?.name || models.find(m => m.id === conn.toId)?.name || `ID=${conn.toId}`;
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console.log(` [${conn.type}] ${fromName} -> ${toName} (prop: ${conn.property || 'none'})`);
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}
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clusterConnCount++;
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}
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}
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console.log(`Total cluster connections: ${clusterConnCount}`);
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// Try both directions for Cluster <-> Model connections
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for (const conn of connections) {
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if (conn.type === 'OO') {
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// Cluster -> Model
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const clusterFrom = clusters.find(c => c.id === conn.fromId);
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const modelTo = models.find(m => m.id === conn.toId);
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if (clusterFrom && modelTo) {
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clusterToBone.set(clusterFrom.id, {
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clusterId: clusterFrom.id,
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clusterName: clusterFrom.name,
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boneModelId: conn.toId,
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boneModelIndex: models.indexOf(modelTo),
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boneModelName: modelTo.name
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});
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}
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// Model -> Cluster (reversed)
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const modelFrom = models.find(m => m.id === conn.fromId);
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const clusterTo = clusters.find(c => c.id === conn.toId);
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if (modelFrom && clusterTo) {
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clusterToBone.set(clusterTo.id, {
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clusterId: clusterTo.id,
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clusterName: clusterTo.name,
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boneModelId: conn.fromId,
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boneModelIndex: models.indexOf(modelFrom),
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boneModelName: modelFrom.name
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});
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}
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}
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}
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console.log(`Cluster -> Bone mappings (${clusterToBone.size}):`);
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for (const [clusterId, info] of clusterToBone) {
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const hasAnimation = curveNodeTargets.has(info.boneModelId);
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console.log(` Cluster "${info.clusterName}" -> Model[${info.boneModelIndex}] "${info.boneModelName}" ${hasAnimation ? '✓ HAS ANIMATION' : '✗ NO ANIMATION'}`);
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}
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// Summary
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console.log(`\n=== SUMMARY ===`);
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const animatedModels = [...curveNodeTargets.keys()];
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const boneModels = [...clusterToBone.values()].map(b => b.boneModelId);
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const bonesWithAnimation = boneModels.filter(id => curveNodeTargets.has(id));
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const bonesWithoutAnimation = boneModels.filter(id => !curveNodeTargets.has(id));
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console.log(`Total animated models: ${animatedModels.length}`);
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console.log(`Total bone models: ${boneModels.length}`);
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console.log(`Bones WITH animation: ${bonesWithAnimation.length}`);
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console.log(`Bones WITHOUT animation: ${bonesWithoutAnimation.length}`);
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if (bonesWithoutAnimation.length > 0) {
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console.log(`\nBones missing animation:`);
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for (const id of bonesWithoutAnimation.slice(0, 10)) {
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const info = [...clusterToBone.values()].find(b => b.boneModelId === id);
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console.log(` - Model[${info.boneModelIndex}] "${info.boneModelName}"`);
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}
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if (bonesWithoutAnimation.length > 10) {
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console.log(` ... and ${bonesWithoutAnimation.length - 10} more`);
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}
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}
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console.log('\nDone!');
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