sines/
sines.rs

1//! Cool looking animated sine waves.
2//!
3//! ```text
4//! ⠀⠀i:⠀107⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀Fixed⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
5//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
6//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
7//! ⠉⠉⠢⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠊⠉⠉⠢⢄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠔⠉⠉⠑⢄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠔⠉⠉⠑⢄⠀
8//! ⠀⠀⠀⠘⢄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡰⠁⠀⠀⠀⠀⠀⢣⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠎⠀⠀⠀⠀⠀⢣⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠊⠀⠀⠀⠀⠀⢣
9//! ⠀⠀⠀⠀⢘⡔⠉⠉⠉⠉⠢⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡰⠁⠀⠀⠀⠀⠀⠀⠀⣣⠊⠉⠉⠉⠢⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠃⠀⠀⠀⠀⠀⠀⠀⣣⠊⠉⠉⠉⠢⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠃⠀⠀⠀⠀⠀⠀⠀
10//! ⠀⠀⠀⡔⠁⠘⡄⠀⠀⠀⠀⠈⣢⡔⠒⠒⠒⠒⢄⡀⡰⠁⠀⠀⠀⠀⠀⠀⡠⠊⠀⢣⠀⠀⠀⠀⠈⣢⡔⠒⠒⠒⠒⢄⡀⢀⠎⠀⠀⠀⠀⠀⠀⡠⠊⠀⢣⠀⠀⠀⠀⠈⡢⡔⠒⠒⠒⠒⢄⡀⢀⠎⠀⠀⠀⠀⠀⢀⠔⠉
11//! ⠀⢠⠊⠀⠀⠀⠱⡀⠀⠀⡠⠊⠀⠘⢄⠀⠀⠀⠀⢸⠣⡀⠀⠀⠀⠀⠀⡔⠁⠀⠀⠈⢆⠀⠀⡠⠊⠀⠘⢄⠀⠀⠀⠀⠈⡮⡀⠀⠀⠀⠀⠀⡔⠁⠀⠀⠈⢆⠀⢀⡠⠊⠀⠑⢄⠀⠀⠀⠀⠈⡮⡀⠀⠀⠀⠀⢠⠊⠀⠀
12//! ⡰⠁⠀⠀⠀⠀⠀⢣⠔⠉⠀⠀⠀⠀⠈⢢⠀⠀⢠⠃⠀⠈⠑⢄⠀⢀⠎⠀⠀⠀⠀⠀⢘⡔⠉⠀⠀⠀⠀⠈⢢⠀⠀⠀⡜⠀⠈⠒⢄⠀⢠⠊⠀⠀⠀⠀⠀⢘⡔⠁⠀⠀⠀⠀⠈⢢⠀⠀⠀⡜⠀⠈⠒⢄⠀⡔⠁⠀⠀⠀
13//! ⠣⣀⣀⣀⣀⡠⠒⠁⢣⠀⠀⠀⠀⠀⠀⠀⠑⢄⠎⠀⠀⠀⠀⢀⠕⠣⣀⣀⢀⣀⡠⠒⠁⠘⡄⠀⠀⠀⠀⠀⠀⠑⢄⡰⠁⠀⠀⠀⢀⠕⠥⣀⣀⣀⣀⡠⠒⠁⠘⡄⠀⠀⠀⠀⠀⠀⠑⢄⡸⠀⠀⠀⠀⡠⠛⠤⣀⣀⣀⣀
14//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⢣⠀⠀⠀⠀⠀⠀⢀⠎⠑⠤⢄⠤⠔⠁⠀⠀⠀⠀⠁⠀⠀⠀⠀⠀⠘⡄⠀⠀⠀⠀⠀⠀⡰⠑⠤⠤⠤⠔⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠱⡀⠀⠀⠀⠀⠀⠀⡰⠑⠤⠤⠤⠊⠀⠀⠀⠀⠀⠀⠀
15//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢣⠀⠀⠀⠀⢀⠎⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⡄⠀⠀⠀⠀⡰⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠑⡄⠀⠀⠀⠀⡰⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
16//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠑⠤⠤⠔⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⢄⠤⠊⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⠤⠤⠊⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
17//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
18//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
19//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
20//! ```
21//!
22//! ```text
23//! ⠀Δt:⠀0.003731337⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀Variable⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
24//! acc:⠀122.2455052⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
25//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
26//! ⠀⢀⠔⠉⠉⠑⢄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠔⠉⠉⠑⢄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠖⠋⠉⠑⠢⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡰⠉⠉
27//! ⢠⠃⠀⠀⠀⠀⠈⢢⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠃⠀⠀⠀⠀⠈⢲⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠇⠀⠀⠀⠀⠀⠑⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡜⠀⠀⠀
28//! ⢇⠀⠀⠀⠀⠀⠀⠀⢣⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠊⠉⠉⠉⢲⢧⠀⠀⠀⠀⠀⠀⠀⢱⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠎⠉⠉⠉⢱⠣⡀⠀⠀⠀⠀⠀⠀⠸⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠔⠉⠉⠉⠑⡾⡀⠀⠀⠀
29//! ⠀⠱⡀⣀⠤⠔⠒⠒⠚⢦⢄⠀⠀⠀⠀⠀⠀⢀⠎⠀⠀⠀⠀⢠⠃⠀⠹⡀⣀⠤⠒⠒⠒⠒⢣⢄⠀⠀⠀⠀⠀⠀⢀⠎⠀⠀⠀⠀⢀⠇⠀⠈⢆⢀⡠⠒⠒⠒⠒⠳⣄⠀⠀⠀⠀⠀⠀⠀⡔⠁⠀⠀⠀⠀⡜⠀⠘⢄⢀⡠
30//! ⠀⢀⠜⢇⠀⠀⠀⠀⠀⠘⡄⠑⠢⡀⠀⠀⡰⠁⠀⠀⠀⠀⢀⠎⠀⠀⢠⠊⢆⠀⠀⠀⠀⠀⠘⡄⠑⠤⡀⠀⠀⡰⠁⠀⠀⠀⠀⢀⠎⠀⠀⢀⠔⠱⡀⠀⠀⠀⠀⠀⢣⠑⠤⡀⠀⠀⢀⠎⠀⠀⠀⠀⠀⡸⠀⠀⢀⠔⠣⡀
31//! ⠔⠁⠀⠀⠣⡀⠀⠀⠀⠀⠘⡄⠀⠑⢄⠜⠀⠀⠀⠀⠀⠀⡎⠀⣀⠔⠁⠀⠀⠣⡀⠀⠀⠀⠀⠘⡄⠀⠈⢢⡔⠁⠀⠀⠀⠀⠀⡎⠀⡠⠔⠁⠀⠀⠘⢄⠀⠀⠀⠀⠀⢇⠀⠈⠢⡠⠃⠀⠀⠀⠀⠀⢰⠁⡠⠔⠁⠀⠀⠘
32//! ⠀⠀⠀⠀⠀⠘⢄⠀⠀⠀⠀⠱⡀⡠⠃⠑⠒⠤⣀⣀⣀⣜⠤⠊⠀⠀⠀⠀⠀⠀⠘⢄⠀⠀⠀⠀⠱⡀⡠⠇⠈⠒⠤⣀⣀⣀⣔⠥⠊⠀⠀⠀⠀⠀⠀⠈⠢⡀⠀⠀⠀⠈⢆⢀⠎⠈⠒⢄⣀⡀⣀⣠⠧⠊⠀⠀⠀⠀⠀⠀
33//! ⠀⠀⠀⠀⠀⠀⠀⠑⠢⠤⠤⠔⠻⡀⠀⠀⠀⠀⠀⠀⡰⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠢⠤⠤⠔⠻⡀⠀⠀⠀⠀⠀⠀⡸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⠤⡠⠤⠚⢇⠀⠀⠀⠀⠀⠈⢀⠇⠀⠀⠀⠀⠀⠀⠀⠀
34//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠱⡀⠀⠀⠀⠀⡔⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠑⡄⠀⠀⠀⠀⡔⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢆⠀⠀⠀⠀⢠⠊⠀⠀⠀⠀⠀⠀⠀⠀⠀
35//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⢄⠤⠊⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠢⠤⠤⠎⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠓⠤⠤⠔⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
36//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
37//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
38//! ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
39//! ```
40
41use std::time;
42
43use textcanvas::TextCanvas;
44use textcanvas::charts::Plot;
45use textcanvas::utils::GameLoop;
46
47fn main() {
48    for _ in 0..3 {
49        with_fixed_time_step();
50        with_variable_time_step();
51    }
52}
53
54/// Will loop at a predefined rate.
55fn with_fixed_time_step() {
56    let mut canvas = TextCanvas::new(80, 16);
57
58    let mut big_sine = TextCanvas::new(80, 10);
59    let mut medium_sine = TextCanvas::new(80, 6);
60    let mut small_sine = TextCanvas::new(80, 4);
61
62    let f = |x: f64| x.sin();
63
64    let mut i = 0;
65    #[rustfmt::skip]
66    GameLoop::loop_fixed(time::Duration::from_millis(30), &mut || {
67        if i == 108 {
68            // Break out of the loop.
69            return None;
70        }
71
72        let big_offset = f64::from(i) / 350.0 * 37.0;
73        let medium_offset = f64::from(i) / 250.0 * 37.0;
74        let small_offset = f64::from(i) / 150.0 * 37.0;
75
76        canvas.clear();
77
78        big_sine.clear();
79        medium_sine.clear();
80        small_sine.clear();
81
82        Plot::function(&mut big_sine, -10.0 + big_offset, 10.0 + big_offset, &f);
83        Plot::function(&mut medium_sine, -10.0 + medium_offset, 10.0 + medium_offset, &f);
84        Plot::function(&mut small_sine, -10.0 + small_offset, 10.0 + small_offset, &f);
85
86        canvas.merge_canvas(&big_sine, 0, 12);
87        canvas.merge_canvas(&medium_sine, 0, 20);
88        canvas.merge_canvas(&small_sine, 0, 25);
89
90        canvas.draw_text(&format!("  i: {i}"), 0, 0);
91        canvas.draw_text("Fixed", 37, 0);
92
93        i += 1;
94
95        Some(canvas.to_string())
96    });
97}
98
99/// Will loop as fast as possible.
100fn with_variable_time_step() {
101    let mut canvas = TextCanvas::new(80, 16);
102
103    let mut big_sine = TextCanvas::new(80, 10);
104    let mut medium_sine = TextCanvas::new(80, 6);
105    let mut small_sine = TextCanvas::new(80, 4);
106
107    let f = |x: f64| x.sin();
108
109    let mut accumulator = 0.0;
110    #[rustfmt::skip]
111    GameLoop::loop_variable(&mut |delta_time| {
112        if accumulator >= 333.33 {
113            // Break out of the loop.
114            return None;
115        }
116
117        let big_offset = accumulator / 350.0 * 12.0;
118        let medium_offset = accumulator / 250.0 * 12.0;
119        let small_offset = accumulator / 150.0 * 12.0;
120
121        canvas.clear();
122
123        big_sine.clear();
124        medium_sine.clear();
125        small_sine.clear();
126
127        Plot::function(&mut big_sine, -10.0 + big_offset, 10.0 + big_offset, &f);
128        Plot::function(&mut medium_sine, -10.0 + medium_offset, 10.0 + medium_offset, &f);
129        Plot::function(&mut small_sine, -10.0 + small_offset, 10.0 + small_offset, &f);
130
131        canvas.merge_canvas(&big_sine, 0, 12);
132        canvas.merge_canvas(&medium_sine, 0, 20);
133        canvas.merge_canvas(&small_sine, 0, 25);
134
135        canvas.draw_text(&format!(" Δt: {delta_time:.9}"), 0, 0);
136        canvas.draw_text(&format!("acc: {accumulator:>11.7}"), 0, 1);
137        canvas.draw_text("Variable", 36, 0);
138
139        accumulator += 100.0 * delta_time;
140
141        Some(canvas.to_string())
142    });
143}
sines/sines.rs

sines/
sines.rs
