1 unstable release
0.1.0 | Apr 18, 2024 |
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#130 in Graphics APIs
162 downloads per month
Used in winit-input-map
120KB
3K
SLoC
glium-types
this is a crate designed to include all the things you need to start working with glium. it includes:
- vectors for 2-4 dimesnions
- square_matrices for 2-4 dimensions
- quaternions
- vertex types: vertices, normals, vertex colours and texturecoords.
and to reduce boilerplate it also includes:
- mesh macro
- a premade vertex shader
- 3d drawing parameters
use std::{thread, time::{Duration, Instant}};
use glium::{backend::glutin::SimpleWindowBuilder, uniform, DrawParameters, Program, Surface};
use glium_types::{prelude::*, teapot};
use winit::event::{Event, WindowEvent};
fn main(){
let event_loop = winit::event_loop::EventLoop::new().unwrap();
event_loop.set_control_flow(winit::event_loop::ControlFlow::Poll);
let (_window, display) = SimpleWindowBuilder::new().build(&event_loop);
let (indices, verts, norms) = mesh!(&display, &teapot::INDICES, &teapot::VERTICES, &teapot::NORMALS);
let program = Program::from_source(&display, shaders::VERTEX,
" #version 140
out vec4 colour;
in vec3 v_normal;
uniform vec3 light;
void main(){
colour = vec4(dot(normalize(v_normal), light));
}", None).unwrap();
let draw_parameters = DrawParameters{
//teapot uses clockwise culling. most other models use anti clockwise culling
backface_culling: glium::BackfaceCullingMode::CullClockwise,
..params::alias_3d()
};
let time = Instant::now();
event_loop.run(|event, target| {
match event {
Event::AboutToWait => {
let time = time.elapsed().as_secs_f32();
let mut frame = display.draw();
let view = Mat4::view_matix(frame.get_dimensions(), 1.0, 1024.0, 0.1);
let camera = Mat4::from_pos(vec3(0.0, 0.0, -20.0));
// multiplying quaternions is equivelant to transformations,
// so the bellow code will rotate around the z axis then x and then y.
// this also works for matrices
let rot = Quaternion::from_y_rotation(time)
* Quaternion::from_x_rotation(time / 2.0)
* Quaternion::from_z_rotation(time / 4.0);
//moves up 50.0 then scales and rotates.
let model = Mat4::from_scale_and_rot(Vec3::splat(0.1), rot)
* Mat4::from_pos(vec3(0.0, 50.0, 0.0));
//input for the vertex shader and our fragment shader.
let uniforms = uniform! { model: model, camera: camera, view: view, light: vec3(1.0, 1.0, -1.0).normalise() };
frame.clear_color_and_depth((0.0, 0.0, 0.0, 0.0), 1.0);
frame.draw((&verts, &norms), &indices, &program, &uniforms, &draw_parameters).unwrap();
frame.finish().unwrap();
//throttle speed of rendering
thread::sleep(Duration::from_millis(16));
},
Event::WindowEvent { event: WindowEvent::CloseRequested, .. } => target.exit(),
_ => ()
}
}).unwrap();
}
Dependencies
~0–14MB
~195K SLoC