diff options
| -rw-r--r-- | Cargo.lock | 56 | ||||
| -rw-r--r-- | Cargo.toml | 1 | ||||
| -rw-r--r-- | src/main.rs | 64 |
3 files changed, 118 insertions, 3 deletions
@@ -1,5 +1,61 @@ # This file is automatically @generated by Cargo. # It is not intended for manual editing. [[package]] +name = "bitflags" +version = "1.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693" + +[[package]] +name = "cfg-if" +version = "0.1.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822" + +[[package]] +name = "lazy_static" +version = "1.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646" + +[[package]] +name = "libc" +version = "0.2.81" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb" + +[[package]] name = "poly" version = "0.1.0" +dependencies = [ + "sdl2", +] + +[[package]] +name = "sdl2" +version = "0.34.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "fcbb85f4211627a7291c83434d6bbfa723e28dcaa53c7606087e3c61929e4b9c" +dependencies = [ + "bitflags", + "lazy_static", + "libc", + "sdl2-sys", +] + +[[package]] +name = "sdl2-sys" +version = "0.34.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "28d81feded049b9c14eceb4a4f6d596a98cebbd59abdba949c5552a015466d33" +dependencies = [ + "cfg-if", + "libc", + "version-compare", +] + +[[package]] +name = "version-compare" +version = "0.0.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d63556a25bae6ea31b52e640d7c41d1ab27faba4ccb600013837a3d0b3994ca1" @@ -7,3 +7,4 @@ edition = "2018" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html [dependencies] +sdl2 = "0.34.3" diff --git a/src/main.rs b/src/main.rs index 1e4f704..13f13da 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,5 +1,63 @@ +use poly::Poly; +use poly::Number; +use poly::Lerp; + +use sdl2::pixels::Color; +use sdl2::event::Event; +use sdl2::keyboard::Keycode; +use sdl2::rect::Rect; + +use std::thread; +use std::time::Duration; + +fn eval_poly(p: &Poly, t: Number) -> Number { + let mut r = 0.0; + for i in 0..p.len() { + r += p[i] * t.powi(i as i32); + } + r +} + fn main() { - let a = poly::Lerp::new(vec![1.0, 5.0, 8.0, 3.0, 10.0]); - println!("{:?}", a); - println!("{:?}", poly::lp(a)); + let a = Lerp::new(vec![100.0, 200.0, 300.0, 500.0]); + let b = Lerp::new(vec![400.0, 140.0, 500.0, 300.0]); + let pa = poly::lp(a); + let pb = poly::lp(b); + + 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 + }, + _ => {} + } + } + + for t in 0..800 { + let x = eval_poly(&pa, t as Number / 800.0); + let y = eval_poly(&pb, t as Number / 800.0); + canvas.set_draw_color(Color::RGB(180, 20, 20)); + canvas.fill_rect(Rect::new(t, x as i32, 5, 5)).unwrap(); + canvas.set_draw_color(Color::RGB(20, 180, 20)); + canvas.fill_rect(Rect::new(t, y as i32, 5, 5)).unwrap(); + } + + canvas.present(); + thread::sleep(Duration::new(0, 1_000_000_000u32 / 60)); + } } |