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#![forbid(unsafe_code)]
use crate::error::*;
use crate::graphics::{ Permanent, Model };
use crate::linear_algebra::{ Vec2, Vec3 };
use crate::shader_data::Vertex;
use std::io::Cursor;
use tobj::{ load_obj_buf, LoadOptions };
pub fn load_obj(obj: &[u8], permanent: &Permanent) -> Result<Model> {
let load_options = LoadOptions {
single_index: true,
triangulate: true,
..Default::default()
};
let (models, materials) = load_obj_buf(&mut Cursor::new(obj), &load_options,
|_| Ok(Default::default()))?;
let _ = materials?;
let mut vertices = Vec::new();
let mut indices = Vec::new();
for model in models {
for index in 0 .. model.mesh.positions.len() / 3 {
vertices.push(Vertex::new(Vec3::new(model.mesh.positions[index*3],
model.mesh.positions[index*3 + 1],
model.mesh.positions[index*3 + 2]),
Vec3::new(1.0, 1.0, 1.0),
Vec2::new(model.mesh.texcoords[index*2],
model.mesh.texcoords[index*2 + 1])))
}
for index in model.mesh.indices {
indices.push(index);
}
}
Model::new(vertices, indices, permanent)
}
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