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@gltf-transform/core
Advanced tools
Part of the glTF-Transform project.
Install the scripting packages:
npm install --save @gltf-transform/core @gltf-transform/extensions @gltf-transform/functions
Read and write glTF scenes with platform I/O utilities WebIO, NodeIO, or DenoIO:
import { Document, NodeIO } from '@gltf-transform/core';
import { KHRONOS_EXTENSIONS } from '@gltf-transform/extensions';
import draco3d from 'draco3dgltf';
// Configure I/O.
const io = new NodeIO()
.registerExtensions(KHRONOS_EXTENSIONS)
.registerDependencies({
'draco3d.decoder': await draco3d.createDecoderModule(), // Optional.
'draco3d.encoder': await draco3d.createEncoderModule(), // Optional.
});
// Read from URL.
const document = await io.read('path/to/model.glb');
// Write to byte array (Uint8Array).
const glb = await io.writeBinary(document);
To perform changes to an existing glTF Document, import off-the-shelf scripts from the Functions package, or write your own using API classes like Material, Primitive, and Texture.
import { resample, prune, dedup, draco, textureCompress } from '@gltf-transform/functions';
import * as sharp from 'sharp'; // Node.js only.
await document.transform(
// Losslessly resample animation frames.
resample(),
// Remove unused nodes, textures, or other data.
prune(),
// Remove duplicate vertex or texture data, if any.
dedup(),
// Compress mesh geometry with Draco.
draco(),
// Convert textures to WebP (Requires glTF Transform v3 and Node.js).
textureCompress({
encoder: sharp,
targetFormat: 'webp',
resize: [1024, 2024],
}),
// Custom transform.
backfaceCulling({cull: true}),
);
// Custom transform: enable/disable backface culling.
function backfaceCulling(options) {
return (document) => {
for (const material of document.getRoot().listMaterials()) {
material.setDoubleSided(!options.cull);
}
};
}
To learn how glTF-Transform works, and the architecture of the scripting API, start with Concepts. To try out the scripting API without installing anything, visit gltf.report/, load a glTF model, and open the Script tab.
See Credits.
Copyright 2023, MIT License.
FAQs
glTF 2.0 SDK for JavaScript and TypeScript, on Web and Node.js.
The npm package @gltf-transform/core receives a total of 17,925 weekly downloads. As such, @gltf-transform/core popularity was classified as popular.
We found that @gltf-transform/core demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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