| 1 |
|
| 2 | <p align="center">
|
| 3 | <img src="https://github.com/google/draco/raw/master/docs/DracoLogo.jpeg" />
|
| 4 | </p>
|
| 5 |
|
| 6 | News
|
| 7 | =======
|
| 8 | ### Version 1.3.4 release
|
| 9 | * Fixes for Unity
|
| 10 |
|
| 11 | ### Version 1.3.3 release
|
| 12 | * Added ExpertEncoder to the JavaScript API
|
| 13 | * Allows developers to set quantization options per attribute id
|
| 14 | * Bug fixes
|
| 15 |
|
| 16 | ### Version 1.3.2 release
|
| 17 | * Bug fixes
|
| 18 |
|
| 19 | ### Version 1.3.1 release
|
| 20 | * Fix issue with multiple attributes when skipping an attribute transform
|
| 21 |
|
| 22 | ### Version 1.3.0 release
|
| 23 | * Improved kD-tree based point cloud encoding
|
| 24 | * Now applicable to point clouds with any number of attributes
|
| 25 | * Support for all integer attribute types and quantized floating point types
|
| 26 | * Improved mesh compression up to 10% (on average ~2%)
|
| 27 | * For meshes, the 1.3.0 bitstream is fully compatible with 1.2.x decoders
|
| 28 | * Improved JavaScript API
|
| 29 | * Added support for all signed and unsigned integer types
|
| 30 | * Added support for point clouds to our JavaScript encoder API
|
| 31 | * Added support for integer properties to the PLY decoder
|
| 32 | * Bug fixes
|
| 33 |
|
| 34 | Description
|
| 35 | ===========
|
| 36 |
|
| 37 | [Draco] is a library for compressing and decompressing 3D geometric [meshes] and
|
| 38 | [point clouds]. It is intended to improve the storage and transmission of 3D
|
| 39 | graphics.
|
| 40 |
|
| 41 | Draco was designed and built for compression efficiency and speed. The code
|
| 42 | supports compressing points, connectivity information, texture coordinates,
|
| 43 | color information, normals, and any other generic attributes associated with
|
| 44 | geometry. With Draco, applications using 3D graphics can be significantly
|
| 45 | smaller without compromising visual fidelity. For users, this means apps can
|
| 46 | now be downloaded faster, 3D graphics in the browser can load quicker, and VR
|
| 47 | and AR scenes can now be transmitted with a fraction of the bandwidth and
|
| 48 | rendered quickly.
|
| 49 |
|
| 50 | [Draco] is released as C++/Javascript source code that can be used to compress 3D
|
| 51 | graphics as well as decoders for the encoded data.
|
| 52 |
|
| 53 | NPM Package
|
| 54 | ===========
|
| 55 |
|
| 56 | The code shows a simple example of using Draco encoder and decoder with Node.js.
|
| 57 | `draco_encoder_node.js` and `draco_decoder_node.js` are modified Javascript
|
| 58 | encoding/decoding files that are compatible with Node.js.
|
| 59 | `draco_nodejs_example.js` has the example code for usage.
|
| 60 |
|
| 61 | How to run the code:
|
| 62 |
|
| 63 | (1) Install draco3d package :
|
| 64 |
|
| 65 | ~~~~~ bash
|
| 66 | $ npm install draco3d
|
| 67 | ~~~~~
|
| 68 |
|
| 69 | (2) Run example code to test:
|
| 70 |
|
| 71 | ~~~~~ bash
|
| 72 | $ cp node_modules/draco3d/draco_nodejs_example.js .
|
| 73 | $ cp node_modules/draco3d/bunny.drc .
|
| 74 | $ node draco_nodejs_example.js
|
| 75 | ~~~~~
|
| 76 |
|
| 77 | The code loads the [Bunny] model, it will first decode to a mesh
|
| 78 | and then encode it with different settings.
|
| 79 |
|
| 80 | References
|
| 81 | ==========
|
| 82 | [Draco]: https://github.com/google/draco
|
| 83 | [meshes]: https://en.wikipedia.org/wiki/Polygon_mesh
|
| 84 | [point clouds]: https://en.wikipedia.org/wiki/Point_cloud
|
| 85 | [Bunny]: https://graphics.stanford.edu/data/3Dscanrep/
|
| 86 |
|
| 87 | Bunny model from Stanford's graphic department <https://graphics.stanford.edu/data/3Dscanrep/>
|