public generateGLTF()

in packages/gltf-gen/src/gltffactory.ts [33:81]
40 lines of code
7 McCabe index (conditional complexity)

	public generateGLTF(): Buffer {
		const scanId = Math.floor(1000000 * Math.random());
		const dataBufferSize =
			(this.textures.length ? this.textures.reduce((acc, t) => acc + t.getByteSize(scanId), 0) : 0) +
			(this.materials.length ? this.materials.reduce((acc, m) => acc + m.getByteSize(scanId), 0) : 0) +
			(this.meshes.length ? this.meshes.reduce((acc, m) => acc + m.getByteSize(scanId), 0) : 0) +
			(this.scenes.length ? this.scenes.reduce((acc, s) => acc + s.getByteSize(scanId), 0) : 0);

		const binaryData = Buffer.allocUnsafe(roundUpToNextMultipleOf4(dataBufferSize));

		const document: GLTF.GlTf = {
			asset: {
				version: '2.0',
				generator: '@microsoft/gltf-gen'
			}
		};

		if (binaryData.length > 0) {
			document.buffers = [{
				byteLength: dataBufferSize
			}];
		}

		this.textures.forEach(t => t.serialize(document, binaryData));
		this.materials.forEach(m => m.serialize(document, binaryData));
		this.meshes.forEach(m => m.serialize(document, binaryData));
		this.scenes.forEach(s => s.serialize(document, binaryData));

		let json = JSON.stringify(document);
		while (Buffer.byteLength(json, 'utf8') % 4 > 0) {
			json += ' ';
		}
		const jsonLength = Buffer.byteLength(json, 'utf8');

		const gltfData = Buffer.allocUnsafe(jsonLength + binaryData.length + 28);
		gltfData.writeUInt32LE(0x46546c67, 0); // "glTF"
		gltfData.writeUInt32LE(2, 4); // GLB version number
		gltfData.writeUInt32LE(gltfData.length, 8); // length of the total file

		gltfData.writeUInt32LE(jsonLength, 12); // length of the JSON
		gltfData.writeUInt32LE(0x4e4f534a, 16); // "JSON"
		gltfData.write(json, 20, jsonLength, 'utf8');

		gltfData.writeUInt32LE(binaryData.length, 20 + jsonLength); // length of the binary
		gltfData.writeUInt32LE(0x004e4942, 20 + jsonLength + 4); // " BIN"
		binaryData.copy(gltfData, 20 + jsonLength + 8);

		return gltfData;
	}