1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
mod lerp;
mod number;
mod poly;
use lerp::Lerp;
use number::Number;
use std::thread;
use std::time::Duration;
use sdl2::event::Event;
use sdl2::keyboard::Keycode;
use sdl2::pixels::Color;
use sdl2::rect::Rect;
fn main() {
let a = Lerp::new(vec![2.0, -2.0, 2.0]);
let b = Lerp::new(vec![-1.0, 1.0, 2.0]);
let pa = lerp::lp(a);
let pb = lerp::lp(b);
let p = poly::gcd(&pa, &pb);
let sdl_context = sdl2::init().unwrap();
let video_subsystem = sdl_context.video().unwrap();
let window = video_subsystem
.window("rust-sdl2 demo", 800, 600)
.position_centered()
.build()
.unwrap();
let mut canvas = window.into_canvas().build().unwrap();
let mut event_pump = sdl_context.event_pump().unwrap();
'running: loop {
canvas.set_draw_color(Color::RGB(20, 20, 20));
canvas.clear();
for event in event_pump.poll_iter() {
match event {
Event::Quit { .. }
| Event::KeyDown {
keycode: Some(Keycode::Escape),
..
} => break 'running,
_ => {}
}
}
let s = -600.0 / 10.0;
let k = 600.0 / 2.0;
for t in -800..800 {
let x = k + s * pa.eval(t as Number / 100.0);
let y = k + s * pb.eval(t as Number / 100.0);
let z = k + s * p.eval(t as Number / 100.0);
canvas.set_draw_color(Color::RGB(180, 20, 20));
canvas
.fill_rect(Rect::new(400 + t, x as i32, 5, 5))
.unwrap();
canvas.set_draw_color(Color::RGB(20, 180, 20));
canvas
.fill_rect(Rect::new(400 + t, y as i32, 5, 5))
.unwrap();
canvas.set_draw_color(Color::RGB(20, 20, 180));
canvas
.fill_rect(Rect::new(400 + t, z as i32, 2, 2))
.unwrap();
canvas.set_draw_color(Color::RGB(255, 0, 0));
canvas
.fill_rect(Rect::new(400 + t, k as i32, 2, 2))
.unwrap();
}
canvas.present();
thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
}
}
|
