@loaders.gl/draco

What is @loaders.gl/draco?

@loaders.gl/draco is a module within the loaders.gl framework that provides support for loading and decoding Draco compressed 3D geometries. Draco is a library for compressing and decompressing 3D geometric meshes and point clouds, which significantly reduces the size of 3D assets.

What are @loaders.gl/draco's main functionalities?

Loading Draco Compressed Data

This feature allows you to load Draco compressed data from a specified URL. The `DracoLoader` is used in conjunction with the `load` function from `@loaders.gl/core` to fetch and decode the compressed 3D geometry.

const { DracoLoader } = require('@loaders.gl/draco');
const { load } = require('@loaders.gl/core');

async function loadDracoData(url) {
  const data = await load(url, DracoLoader);
  console.log(data);
}

loadDracoData('path/to/draco/file.drc');

Decoding Draco Data

This feature allows you to decode Draco compressed data from an ArrayBuffer. The `parse` function from `@loaders.gl/core` is used along with the `DracoLoader` to decode the data into a usable format.

const { DracoLoader } = require('@loaders.gl/draco');
const { parse } = require('@loaders.gl/core');

async function decodeDracoData(arrayBuffer) {
  const data = await parse(arrayBuffer, DracoLoader);
  console.log(data);
}

// Assuming you have an ArrayBuffer of Draco data
const dracoArrayBuffer = new ArrayBuffer();
decodeDracoData(dracoArrayBuffer);

Other packages similar to @loaders.gl/draco

three

Three.js is a popular JavaScript library for creating and displaying 3D graphics in the browser. It includes support for loading and decoding Draco compressed geometries through the `THREE.DRACOLoader` class. Compared to @loaders.gl/draco, Three.js offers a more comprehensive suite of tools for 3D rendering and scene management.

draco3d

Draco3D is the official JavaScript implementation of the Draco compression library. It provides low-level APIs for encoding and decoding 3D geometries. While @loaders.gl/draco focuses on ease of use and integration with the loaders.gl framework, draco3d offers more granular control over the compression and decompression processes.

README

@loaders.gl/draco

loaders.gl is a collection of framework independent 3D and geospatial parsers and encoders.

This module contains loader and writer for Draco compressed meshes and point clouds.

For documentation please visit the website.

Changelog

v1.2.2

• 3d-tiles: Support nested tilesets with local url folders (#344)
• Docs: updates for 3d-tiles and categories (#333)
• core: Fixes to parse (#345)
• docs: front page update
• core: Add error handling to parse* functions (#342)
• core: Name workers for easier debugging (#339)
• fix bug with read property match of undefined (#340) (#341)
• Fix tranformMatrix regression (#338)
• Add back DracoWorkerLoader (#337)
• 3d-tiles: Align tileset callback names with vis.gl conventions (#336)
• 3d-tiles: Tileset3D options refactor (#334)
• 3d-tiles: Remove irrelevant wip code (#335)
• 3d-tiles: polish (#332)
• Support oct encoded normals (#329)
• Extract transform props from layer to tileset (#330)
• Track Memory Use (#331)
• 3d-tiles: Improved stats (#326)
• 3d-tiles: traverser no longer knows about tileset (#328)
• 3d-tiles: Reorder tileset3d methods (#327)
• fix parsing color (#325)
• Adding call for installing the external tileset (#324)
• 3d-tiles: attribute compression Phase 1 (#321)
• 3d-tiles: move styles to wip (#323)
• 3d-tiles: bump to deck/luma 7.2 (#322)
• 3d-tiles: Move point cloud color parsing into 3d-tiles module (#320)
• try to render i3dm and b3dm examples (#319)
• Fix image loader in FF (#318)
• Reorganize docs (#312)
• 3d-tiles: Ensure we parse JSON when loading nested tilesets (#314)
• 3d-tiles: Land partial port of styles (#311)
• Add additional check for jpeg headers for isImage (#315)