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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259
scripts/check-bone-hierarchy.mjs
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259
scripts/check-bone-hierarchy.mjs
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/**
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* Check Bone Hierarchy
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* 检查骨骼层级
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*
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* Verify parent-child relationships for bones
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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 filePath = process.argv[2] || 'F:\\MyProject4\\assets\\octopus.fbx';
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console.log(`=== Check Bone Hierarchy: ${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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const version = view.getUint32(23, true);
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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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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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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': properties.push(view.getInt16(offset, true)); offset += 2; break;
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case 'C': properties.push(buffer[offset] !== 0); offset += 1; break;
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case 'I': properties.push(view.getInt32(offset, true)); offset += 4; break;
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case 'F': properties.push(view.getFloat32(offset, true)); offset += 4; break;
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case 'D': properties.push(view.getFloat64(offset, true)); offset += 8; break;
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case 'L': properties.push(view.getBigInt64(offset, true)); offset += 8; break;
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case 'S':
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case 'R':
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const strLen = view.getUint32(offset, true); 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': case 'd': case 'l': case 'i': 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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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 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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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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const objectsNode = rootNodes.find(n => n.name === 'Objects');
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const connectionsNode = rootNodes.find(n => n.name === 'Connections');
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// Parse 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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// Parse Models
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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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// Build parent relationships from connections
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const modelParent = new Map();
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const modelChildren = new Map();
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for (const conn of connections) {
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if (conn.type === 'OO') {
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const fromModel = models.find(m => m.id === conn.fromId);
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const toModel = models.find(m => m.id === conn.toId);
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if (fromModel && toModel) {
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modelParent.set(conn.fromId, conn.toId);
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if (!modelChildren.has(conn.toId)) {
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modelChildren.set(conn.toId, []);
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}
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modelChildren.get(conn.toId).push(conn.fromId);
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}
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}
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}
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// Find Bone001 and trace its parents
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const bone001 = models.find(m => m.name === 'Bone001');
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if (bone001) {
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console.log(`Bone001 (id=${bone001.id}):`);
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console.log(` type: "${bone001.type}"`);
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// Trace parent chain
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let currentId = bone001.id;
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let depth = 0;
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while (currentId && depth < 10) {
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const parentId = modelParent.get(currentId);
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if (parentId) {
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const parent = models.find(m => m.id === parentId);
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console.log(` Parent [${depth}]: "${parent?.name}" (id=${parentId}, type="${parent?.type}")`);
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} else {
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console.log(` Parent [${depth}]: ROOT (no parent)`);
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break;
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}
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currentId = parentId;
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depth++;
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}
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}
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// Show first level hierarchy
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console.log(`\n=== ROOT LEVEL MODELS ===`);
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const rootModels = models.filter(m => !modelParent.has(m.id));
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rootModels.forEach(m => {
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console.log(`"${m.name}" (type="${m.type}")`);
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const children = modelChildren.get(m.id) || [];
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children.slice(0, 5).forEach(cid => {
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const child = models.find(m => m.id === cid);
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console.log(` └── "${child?.name}" (type="${child?.type}")`);
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});
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if (children.length > 5) {
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console.log(` ... and ${children.length - 5} more children`);
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}
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});
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// Check if Bone001's parent has a transform that's not identity
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const bone001Parent = modelParent.get(bone001?.id);
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if (bone001Parent) {
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const parent = models.find(m => m.id === bone001Parent);
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console.log(`\n=== BONE001'S PARENT DETAILS ===`);
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console.log(`Parent: "${parent?.name}" (type="${parent?.type}")`);
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// Find this parent in FBX and get its transform
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for (const n of objectsNode.children) {
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if (n.name === 'Model' && n.properties[0] === bone001Parent) {
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let position = [0, 0, 0];
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let rotation = [0, 0, 0];
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let scale = [1, 1, 1];
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let preRotation = null;
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for (const child of n.children) {
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if (child.name === 'Properties70') {
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for (const prop of child.children) {
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if (prop.properties[0] === 'Lcl Translation') {
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position = [prop.properties[4], prop.properties[5], prop.properties[6]];
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} else if (prop.properties[0] === 'Lcl Rotation') {
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rotation = [prop.properties[4], prop.properties[5], prop.properties[6]];
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} else if (prop.properties[0] === 'Lcl Scaling') {
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scale = [prop.properties[4], prop.properties[5], prop.properties[6]];
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} else if (prop.properties[0] === 'PreRotation') {
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preRotation = [prop.properties[4], prop.properties[5], prop.properties[6]];
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}
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}
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}
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}
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console.log(` position: [${position.join(', ')}]`);
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console.log(` rotation: [${rotation.join(', ')}]`);
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console.log(` scale: [${scale.join(', ')}]`);
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if (preRotation) {
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console.log(` preRotation: [${preRotation.join(', ')}]`);
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}
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// Check if parent has non-identity transform
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const hasNonIdentityTransform =
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position.some(v => Math.abs(v) > 0.001) ||
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rotation.some(v => Math.abs(v) > 0.001) ||
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scale.some(v => Math.abs(v - 1) > 0.001);
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if (hasNonIdentityTransform) {
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console.log(`\n⚠️ Parent has non-identity transform!`);
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console.log(`This transform MUST be included when calculating bone world matrices.`);
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} else {
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console.log(`\nParent has identity transform (no effect).`);
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}
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}
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}
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}
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console.log('\nDone!');
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