增加转格式
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yinsx
71
lib/model/config.js
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71
lib/model/config.js
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import { listAllModelFiles } from "../utils/gltf.js";
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const transformOptions = [
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{ value: "dedup", label: "dedup（去重）", hint: "删除重复的访问器、材质、网格" },
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{ value: "prune", label: "prune（清理无用节点）", hint: "移除未被引用的节点、材质、动画" },
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{ value: "resample", label: "resample（动画重采样）", hint: "统一动画关键帧间隔，减少多余数据" },
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{ value: "weld", label: "weld（合并顶点）", hint: "合并共享位置的顶点以减少面数" },
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{ value: "quantize", label: "quantize（量化顶点数据）", hint: "降低顶点属性精度减小模型体积" }
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];
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const quantizePresets = [
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{ value: "high", label: "高质量（位置16位，法线12位，UV14位）", hint: "尽量保证细节，适合高保真场景" },
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{ value: "balanced", label: "均衡（位置14位，法线10位，UV12位）", hint: "默认推荐，兼顾体积与质量" },
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{ value: "aggressive", label: "极限压缩（位置12位，法线8位，UV10位）", hint: "最小体积，但可能损失细节" },
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{ value: "light", label: "轻量（位置10位，法线8位，UV10位）", hint: "适合移动端、卡通等对精度不敏感场景" }
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];
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const outputFormats = [
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{ value: "auto", label: "保持原格式", hint: "glTF/GLB保持原格式，OBJ/FBX转为GLB" },
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{ value: "glb", label: "统一导出为 GLB（二进制）", hint: "单文件发布更方便" },
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{ value: "gltf", label: "统一导出为 glTF（JSON）", hint: "可读性好，调试方便" }
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];
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const outputOptions = [
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{ value: "overwrite", label: "覆盖原文件", hint: "直接把结果写回源文件" },
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{ value: "backup", label: "保留备份 (_备份)", hint: "覆盖前在同目录生成 _备份 副本" },
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{ value: "copy", label: "输出副本 (_compressed)", hint: "保留原文件不动，结果写入新文件" }
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];
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export function getSteps() {
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const files = listAllModelFiles();
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const fileStep = {
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name: "模型选择",
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type: "multiselect",
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message: files.length ? "选择要处理的模型（支持 glTF/GLB/OBJ/FBX）" : "当前目录未找到模型文件",
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options: files.map(file => ({ value: file, label: file })),
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default: [...files]
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};
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return [
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fileStep,
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{
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name: "压缩命令",
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type: "multiselect",
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message: "请选择要执行的 gltf-transform 操作",
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options: transformOptions,
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default: ["dedup", "prune", "weld", "quantize"]
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},
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{
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name: "量化级别",
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type: "select",
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message: "量化可显著减小体积（如未启用 quantize 可直接 Tab）",
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options: quantizePresets,
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default: "balanced"
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},
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{
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name: "输出格式",
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type: "select",
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message: "选择最终模型格式",
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options: outputFormats,
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default: "auto"
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},
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{
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name: "输出选项",
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type: "multiselect",
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message: "请选择输出行为",
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options: outputOptions,
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default: ["overwrite", "backup"]
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}
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];
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}
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195
lib/model/index.js
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195
lib/model/index.js
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import fs from "fs";
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import path from "path";
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import color from "picocolors";
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import { NodeIO } from "@gltf-transform/core";
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import { ALL_EXTENSIONS } from "@gltf-transform/extensions";
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import { dedup, prune, resample, weld, quantize } from "@gltf-transform/functions";
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import { BACKUP_SUFFIX, needsConversion } from "../utils/gltf.js";
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import { convert } from "../convert/converters.js";
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import { runInteractive, showSummary } from "./ui.js";
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import { stopKeypress, waitForKey } from "../keyboard.js";
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const io = new NodeIO().registerExtensions(ALL_EXTENSIONS);
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const QUANTIZE_PRESETS = {
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high: { position: 16, normal: 12, texcoord: 14, color: 10, generic: 12 },
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balanced: { position: 14, normal: 10, texcoord: 12, color: 8, generic: 12 },
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aggressive: { position: 12, normal: 8, texcoord: 10, color: 8, generic: 10 },
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light: { position: 10, normal: 8, texcoord: 10, color: 8, generic: 10 }
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};
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function buildTransforms(config) {
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const transforms = [];
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const selected = new Set(config.commands);
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if (selected.has("dedup")) transforms.push(dedup());
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if (selected.has("prune")) transforms.push(prune());
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if (selected.has("resample")) transforms.push(resample());
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if (selected.has("weld")) transforms.push(weld());
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if (selected.has("quantize")) {
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const preset = QUANTIZE_PRESETS[config.quantizePreset] || QUANTIZE_PRESETS.balanced;
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transforms.push(quantize({
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quantizePosition: preset.position,
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quantizeNormal: preset.normal,
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quantizeTexcoord: preset.texcoord,
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quantizeColor: preset.color,
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quantizeGeneric: preset.generic
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}));
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}
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return transforms;
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}
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function resolveOutput(file, config) {
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const cwd = process.cwd();
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const originalExt = path.extname(file).toLowerCase() || ".gltf";
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const baseName = originalExt ? file.slice(0, -originalExt.length) : file;
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const isConvertible = needsConversion(file);
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// OBJ/FBX 默认输出 GLB，除非指定了 gltf
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const targetExt = config.outputFormat === "gltf" ? ".gltf"
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: (config.outputFormat === "glb" || isConvertible) ? ".glb"
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: originalExt;
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const wantsCopy = config.outputOptions.includes("copy");
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const wantsOverwrite = config.outputOptions.includes("overwrite");
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const mode = wantsCopy ? "copy" : (wantsOverwrite ? "overwrite" : "copy");
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const backup = config.outputOptions.includes("backup") && mode === "overwrite";
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const targetName = mode === "copy"
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? `${baseName}_compressed${targetExt}`
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: `${baseName}${targetExt}`;
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return {
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cwd,
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mode,
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backup,
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sourcePath: path.join(cwd, file),
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sourceExt: originalExt,
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targetExt,
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targetPath: path.join(cwd, targetName),
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baseName,
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needsConversion: isConvertible
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};
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}
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async function processFile(file, config, transforms) {
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const output = resolveOutput(file, config);
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if (!fs.existsSync(output.sourcePath)) {
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console.log(color.yellow("跳过，文件不存在: " + file));
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return { ok: false, file, reason: "missing" };
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}
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if (!transforms.length) {
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console.log(color.yellow("未选择任何 gltf-transform 操作，已中止"));
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return { ok: false, file, reason: "no-transform" };
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}
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if (output.backup) {
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const backupName = `${output.baseName}${BACKUP_SUFFIX}${output.sourceExt}`;
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const backupPath = path.join(output.cwd, backupName);
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fs.copyFileSync(output.sourcePath, backupPath);
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}
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let inputPath = output.sourcePath;
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// 如果是 OBJ/FBX，先转换为临时 GLB
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if (output.needsConversion) {
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const tempPath = path.join(output.cwd, `${output.baseName}_temp.glb`);
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console.log(color.dim("转换中: " + file + " → GLB"));
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await convert(output.sourcePath, tempPath, { binary: true });
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inputPath = tempPath;
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}
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const document = io.read(inputPath);
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await document.transform(...transforms);
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io.write(output.targetPath, document);
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// 清理临时文件
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if (output.needsConversion) {
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fs.rmSync(inputPath, { force: true });
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}
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if (output.mode === "overwrite" && output.targetPath !== output.sourcePath) {
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fs.rmSync(output.sourcePath, { force: true });
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}
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if (output.mode === "overwrite" && output.targetPath !== output.sourcePath) {
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console.log(color.dim("已生成新文件: " + path.basename(output.targetPath)));
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}
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return { ok: true, file, output: output.targetPath };
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}
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export async function run() {
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const result = await runInteractive();
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if (!result) return "back";
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stopKeypress();
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const { results } = result;
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const config = {
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files: results[0] || [],
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commands: results[1] || [],
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quantizePreset: results[2] || "balanced",
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outputFormat: results[3] || "auto",
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outputOptions: results[4] || []
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};
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showSummary([
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"模型文件: " + (config.files.length ? config.files.join(", ") : "未选择"),
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"gltf-transform 命令: " + (config.commands.length ? config.commands.join(", ") : "无"),
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"量化级别: " + config.quantizePreset,
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"输出格式: " + config.outputFormat,
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"输出选项: " + (config.outputOptions.length ? config.outputOptions.join(", ") : "默认")
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]);
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if (!config.files.length) {
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console.log(color.yellow("未选择任何模型文件"));
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await waitForKey();
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return "back";
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}
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const transforms = buildTransforms(config);
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if (!transforms.length) {
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console.log(color.yellow("未配置任何压缩命令，请至少选择一项 gltf-transform 操作"));
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await waitForKey();
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return "back";
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}
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const total = config.files.length;
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let success = 0;
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const failed = [];
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console.log(color.cyan(`开始压缩 ${total} 个文件...\n`));
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for (let i = 0; i < config.files.length; i++) {
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const file = config.files[i];
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const progress = `[${i + 1}/${total}]`;
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console.log(color.dim(`${progress} 处理中: ${file}`));
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try {
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const result = await processFile(file, config, transforms);
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if (result.ok) {
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success++;
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console.log(color.green(`${progress} ✓ ${file} → ${path.basename(result.output)}`));
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} else {
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failed.push(file);
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console.log(color.yellow(`${progress} ⊘ 跳过: ${file}`));
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}
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} catch (err) {
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failed.push(file);
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console.log(color.red(`${progress} ✖ 失败: ${file}`));
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console.log(color.dim(" " + String(err?.message || err)));
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}
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}
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console.log("\n" + color.bgGreen(color.black(" 压缩完成 ")));
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if (success) {
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console.log(color.green(`成功: ${success} 个`));
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}
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if (failed.length) {
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console.log(color.yellow(`失败: ${failed.length} 个 (${failed.join(", ")})`));
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}
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await waitForKey();
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return "back";
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}
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9
lib/model/ui.js
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9
lib/model/ui.js
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@ -0,0 +1,9 @@
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import { createStepUI } from "../utils/stepui.js";
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import { getSteps } from "./config.js";
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const ui = createStepUI({
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title: "模型压缩工具",
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getSteps
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});
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export const { runInteractive, showSummary } = ui;
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