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extern crate glium;
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extern crate image;
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use glium::{VertexBuffer, IndexBuffer};
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use glium::texture::Texture2d;
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use therm_util::reader::ByteReader;
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#[derive(Debug, Copy, Clone)]
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pub struct V3D {
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pub pos: [f32; 3],
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pub nrm: [f32; 3],
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pub tex: [f32; 2],
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}
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implement_vertex!(V3D, pos, nrm, tex);
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impl V3D {
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pub fn from_reader<Rd>(reader: &mut ByteReader<Rd>) -> Result<V3D, String>
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where Rd: Iterator<Item=u8>
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{
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Ok(V3D { pos: [ try!(reader.read_twip()) * 0.1,
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try!(reader.read_twip()) * 0.1,
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try!(reader.read_twip()) * 0.1],
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nrm: [ try!(reader.read_twip()),
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try!(reader.read_twip()),
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try!(reader.read_twip()) ],
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tex: [ try!(reader.read_ratio()),
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try!(reader.read_ratio()) ],
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})
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}
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}
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#[derive(Debug, Clone)]
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pub struct Model {
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pub points: Vec<V3D>,
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pub tris: Vec<u16>,
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pub texture: Option<Vec<u8>>,
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}
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impl Model {
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pub fn load_from_file(path: &str) -> Result<Model, String> {
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let mut reader = ByteReader::from_file(path).unwrap();
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Model::from_reader(&mut reader)
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}
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pub fn from_reader<T>(reader: &mut ByteReader<T>) -> Result<Model, String>
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where T: Iterator<Item=u8>
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{
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Ok(Model {
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tris: try!(reader.read_several(|r| r.read_prefix_int().map(|x| x as u16))),
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points: try!(reader.read_several(V3D::from_reader)),
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texture: None,
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})
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}
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pub fn get_vbuf(&self, display: &glium::Display) -> VertexBuffer<V3D> {
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VertexBuffer::new(display, self.points.as_slice()).unwrap()
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}
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pub fn get_ibuf(&self, display: &glium::Display) -> IndexBuffer<u16> {
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IndexBuffer::new(
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display,
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glium::index::PrimitiveType::TrianglesList,
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&self.tris).unwrap()
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}
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pub fn get_tex(&self, display: &glium::Display) -> Option<Texture2d> {
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use std::io::Cursor;
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use glium::texture::RawImage2d;
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if let Some(ref tex) = self.texture {
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let img = image::load(Cursor::new(tex.clone()),
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image::PNG).unwrap().to_rgba();
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let dims = img.dimensions();
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let img = RawImage2d::from_raw_rgba_reversed(img.into_raw(),
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dims);
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Some(Texture2d::new(display, img).unwrap())
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} else {
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None
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}
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}
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}
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