Add license and README

.gitignore

@@ -1,4 +1,3 @@
 /target
 *.csv
 *.wav
-*.png

Cargo.lock

@@ -14,18 +14,6 @@ version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
-[[package]]
-name = "arrayref"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76a2e8124351fda1ef8aaaa3bbd7ebbcb486bbcd4225aca0aa0d84bb2db8fecb"
-
-[[package]]
-name = "arrayvec"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3fb67a6e08acf24fdeccbac2cb6ac4305825bd1f117462e0e6f2f193345ad56"
-
 [[package]]
 name = "autocfg"
 version = "1.5.1"
@@ -38,12 +26,6 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
-[[package]]
-name = "bitflags"
-version = "2.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ded4057c258ba199e2d26386d3af3780957ecaee6c4ef4041c6b4b8b97c0b06"
-
 [[package]]
 name = "bytemuck"
 version = "1.25.2"
@@ -86,6 +68,13 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "dpsim"
+version = "0.1.0"
+dependencies = [
+ "macroquad",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.3"
@@ -155,7 +144,7 @@ dependencies = [
  "byteorder",
  "color_quant",
  "num-traits",
- "png 0.17.16",
+ "png",
 ]
 
 [[package]]
@@ -170,12 +159,6 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
 
-[[package]]
-name = "log"
-version = "0.4.34"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"
-
 [[package]]
 name = "macroquad"
 version = "0.4.16"
@@ -267,20 +250,7 @@ version = "0.17.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82151a2fc869e011c153adc57cf2789ccb8d9906ce52c0b39a6b5697749d7526"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags",
- "crc32fast",
- "fdeflate",
- "flate2",
- "miniz_oxide 0.8.9",
-]
-
-[[package]]
-name = "png"
-version = "0.18.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
-dependencies = [
- "bitflags 2.13.2",
  "crc32fast",
  "fdeflate",
  "flate2",
@@ -299,46 +269,6 @@ version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a219298ac11a56ea9a6d2120044824d6f01aeb034955e7af7bc16858527deea"
 
-[[package]]
-name = "strict-num"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6637bab7722d379c8b41ba849228d680cc12d0a45ba1fa2b48f2a30577a06731"
-
-[[package]]
-name = "symplectic-double-pendulum"
-version = "0.1.0"
-dependencies = [
- "macroquad",
- "tiny-skia",
-]
-
-[[package]]
-name = "tiny-skia"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47ffee5eaaf5527f630fb0e356b90ebdec84d5d18d937c5e440350f88c5a91ea"
-dependencies = [
- "arrayref",
- "arrayvec",
- "bytemuck",
- "cfg-if",
- "log",
- "png 0.18.1",
- "tiny-skia-path",
-]
-
-[[package]]
-name = "tiny-skia-path"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "edca365c3faccca67d06593c5980fa6c57687de727a03131735bb85f01fdeeb9"
-dependencies = [
- "arrayref",
- "bytemuck",
- "strict-num",
-]
-
 [[package]]
 name = "ttf-parser"
 version = "0.25.1"

Cargo.toml

@@ -5,4 +5,3 @@ edition = "2024"
 
 [dependencies]
 macroquad = "0.4.16"
-tiny-skia = "0.12.0"

README.md

@@ -17,13 +17,6 @@ the simulation can be ran with:
 cargo run --bin anim
 ```
 
-Alternatively you can generate a trace image of the path the outer bob
-takes with:
-
-```
-cargo run --bin trace
-```
-
 ## License
 
 Copyright © Camden Dixie O'Brien, available under the Komorebi 2.0.0

src/bin/anim.rs

@@ -1,4 +1,4 @@
-use symplectic_double_pendulum::*;
+use dpsim::*;
 
 use macroquad::prelude::*;
 

src/bin/audio.rs

@@ -1,4 +1,4 @@
-use symplectic_double_pendulum::*;
+use dpsim::*;
 
 use std::fs::File;
 use std::io::{BufWriter, Write};

src/bin/comp_rk4.rs

@@ -1,4 +1,4 @@
-use symplectic_double_pendulum::*;
+use dpsim::*;
 
 use std::ops::{Add, Mul};
 

src/bin/trace.rs

@@ -1,58 +0,0 @@
-use symplectic_double_pendulum::*;
-
-use tiny_skia::*;
-
-const WIDTH: u32 = 800;
-const HEIGHT: u32 = 800;
-
-const MIN: f32 = -2.0;
-const MAX: f32 = 2.0;
-const MARGIN: f32 = 0.2;
-
-fn system_xy(q: &DoublePendulum) -> [f64; 2] {
-	[
-		q.theta.sin() + (q.theta + q.phi).sin(),
-		q.theta.cos() + (q.theta + q.phi).cos()
-	]
-}
-
-fn canvas_xy(q: &DoublePendulum) -> [f32; 2] {
-	system_xy(q).map(|x| (x as f32 * (1.0 - MARGIN) - MIN) * WIDTH as f32 / (MAX - MIN))
-}
-
-fn main() {
-	let omega = 500.0;
-	let h = 1e-3;
-	let t = 20.0;
-
-	let mut state = Augmented::from(State {
-		q: DoublePendulum { theta: std::f64::consts::PI, phi: 0.1 },
-		p: DoublePendulum { theta: 0.0, phi: 0.0 },
-	}, omega);
-
-	let path = {
-		let mut pb = PathBuilder::new();
-
-		let [x, y] = canvas_xy(&state.average().q);
-		pb.move_to(x, y);
-
-		let n = (t / h) as u32;
-		for _ in 0..n {
-			state.evolve(h);
-			let [x, y] = canvas_xy(&state.average().q);
-			pb.line_to(x, y);
-		}
-
-		pb.finish().unwrap()
-	};
-
-	let mut paint = Paint::default();
-	paint.set_color_rgba8(0, 0, 0, 0xff);
-	paint.anti_alias = true;
-	let mut stroke = Stroke::default();
-	stroke.width = 4.0;
-	stroke.line_cap = LineCap::Round;
-	let mut pixmap = Pixmap::new(WIDTH, HEIGHT).unwrap();
-	pixmap.stroke_path(&path, &paint, &stroke, Transform::identity(), None);
-	pixmap.save_png("trace.png").unwrap();
-}