WIP: obj loader mostly done

src/importer/mod.rs

@@ -0,0 +1,31 @@
+mod obj;
+
+use std::path::PathBuf;
+
+use crate::{mesh::Vertex, aabb::AABB};
+
+#[derive(Debug)]
+pub struct ObjMesh {
+    pub name: String,
+    pub vertices: Vec<Vertex>,
+    pub indices: Vec<u32>,
+}
+
+#[derive(Debug)]
+pub struct Object {
+    pub name: String,
+    pub meshes: Vec<ObjMesh>,
+    pub aabb: AABB
+}
+
+pub fn load_from_file(path: &PathBuf) -> Result<Object, Box<dyn std::error::Error>> {
+    // FIXME: don't explode if to_str() fails
+    let path_str = path.to_str().unwrap();
+    let file = std::fs::File::open(path_str)?;
+    // TODO: support both stl and obj based on file extension
+    // if no extension, then test for binary STL magic bytes 
+    // if no magic bytes, then try to guess based on the first line of text in the file
+
+    let obj = obj::load_obj(file)?;
+    Ok(obj)
+}