This script optimizes a GLB file and converts it into a BUF file. It uses Node.js along with the fs, path, gltf-pipeline, and yargs packages.
Below is the import of the forms required for proper operation.
const path = require('path');
const gltfPipeline = require('gltf-pipeline');
const yargs = require('yargs/yargs');
const { hideBin } = require('yargs/helpers');
input(-i): Path to the input GLB file.output(-o): Path to the optimized output GLB file.buf(-b): Path to the output BUF file.
const argv = yargs(hideBin(process.argv))
.option('input', {
alias: 'i',
description: 'Path to the input GLB file',
type: 'string',
demandOption: true
})
.option('output', {
alias: 'o',
description: 'Path to the output optimized GLB file',
type: 'string',
demandOption: true
})
.option('buf', {
alias: 'b',
description: 'Path to the output BUF file',
type: 'string',
demandOption: true
})
.help()
.alias('help', 'h')
.argv;
Uses the path module to resolve absolute paths for the input and output files.
const inputFilePath = path.resolve(__dirname, argv.input);
const optimizedFilePath = path.resolve(__dirname, argv.output);
const bufFilePath = path.resolve(__dirname, argv.buf);
This function reads the input GLB file, optimizes it using gltfPipeline with Draco compression options, and saves the result.'
async function optimizeGLB() {
const glbData = fs.readFileSync(inputFilePath);
const options = {
dracoOptions: {
compressionLevel: 10,
},
};
const optimizedData = await gltfPipeline.processGlb(glbData, options);
fs.writeFileSync(optimizedFilePath, optimizedData.glb);
console.log('Optimized file saved as', optimizedFilePath);
}
This function reads the optimized GLB file and saves it as a BUF file.
function convertToBuf() {
const glbData = fs.readFileSync(optimizedFilePath);
fs.writeFileSync(bufFilePath, glbData);
console.log('Converted file saved as', bufFilePath);
}
The main function runs the GLB optimization and then converts it to a BUF file.
async function optimizeAndConvert() {
await optimizeGLB();
convertToBuf();
}
optimizeAndConvert();
Run the script from the command line, providing the paths for the input and output files.
node script.js --input path/to/input/file.glb --output path/to/optimized/file.glb --buf path/to/output/file.buf