# gltf_kun

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Graph-based [glTF](https://github.com/KhronosGroup/glTF) processing library.
Uses [petgraph](https://crates.io/crates/petgraph) to create a traversable graph of the glTF document.

### Usage

```rust
use gltf_kun::graph::{Graph, GraphNodeWeight, gltf::document::GltfDocument};

let mut graph = Graph::default();

// Create a new glTF document within the graph.
let doc = GltfDocument::new(&mut graph);

// Create a new scene.
// This `scene` variable is just a wrapper around a u32 index into the graph,
// making it cheap to copy and pass around.
let mut scene = doc.create_scene(&mut graph);

// To read or write data, we need to get the weight.
let weight = scene.get_mut(&mut graph);
weight.name = Some("My Scene".to_string());

// Create a glTF node and add it to the scene.
let mut node = doc.create_node(&mut graph);
scene.add_node(&mut graph, node);

// Iterate over all scenes in the document, printing their names.
doc.scenes(&graph).iter().for_each(|scene| {
    let weight = scene.get(&graph);
    println!("Scene name: {:?}", weight.name);
});

use gltf_kun::{extensions::DefaultExtensions, io::format::glb::GlbExport};

// Export the document to a GLB byte array.
let glb = GlbExport::<DefaultExtensions>::export(&mut graph, &doc).ok();
```

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