47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
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extern crate gltf;
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use glium::{ VertexBuffer, IndexBuffer };
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#[derive(Copy, Clone)]
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struct Vertex {
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position: [f32; 3],
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}
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implement_vertex!(Vertex, position);
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pub struct Model {
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vb: VertexBuffer<Vertex>,
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ib: IndexBuffer<u16>,
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}
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impl Model {
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pub fn new(display: &glium::Display, file: &str) -> Self {
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let (document, buffers, _images) = gltf::import(file).expect("Could not load gltf file");
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let mesh = document.meshes().next().expect("Could not find mesh");
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let primitive = mesh.primitives().next().expect("Could not find primitive");
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let reader = primitive.reader(|buffer| Some(&buffers[buffer.index()]));
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let vertices = reader
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.read_positions()
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.unwrap()
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.map(|position| Vertex { position })
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.collect::<Vec<Vertex>>();
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let vb = VertexBuffer::new(display, &vertices).unwrap();
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let indices = reader
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.read_indices()
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.unwrap()
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.into_u32()
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.map(|x| x as u16)
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.collect::<Vec<u16>>();
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let ib = IndexBuffer::new(display, glium::index::PrimitiveType::TrianglesList, &indices).unwrap();
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Model { vb, ib }
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}
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pub fn draw(&self,
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target: &mut impl glium::Surface,
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program: &glium::Program,
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uniforms: &impl glium::uniforms::Uniforms
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) {
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target.draw(&self.vb, &self.ib, program, uniforms, &Default::default()).unwrap()
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}
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}
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