From 85c866cfb76d2b031a83225dc39d269d2bc7bf45 Mon Sep 17 00:00:00 2001
From: Julian <jb@futureplay.de>
Date: Wed, 30 Sep 2020 21:03:29 +0200
Subject: [PATCH 1/3] add the rust version of the ifs

---
 contents/IFS/IFS.md           |  4 ++++
 contents/IFS/code/rust/IFS.rs | 36 +++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 contents/IFS/code/rust/IFS.rs

diff --git a/contents/IFS/IFS.md b/contents/IFS/IFS.md
index 8b7805ff3..d22cba1e4 100644
--- a/contents/IFS/IFS.md
+++ b/contents/IFS/IFS.md
@@ -136,6 +136,8 @@ Here, instead of tracking children of children, we track a single individual tha
 [import:18-29, lang:"c"](code/c/IFS.c)
 {% sample lang="coco" %}
 [import:4-16, lang:"coconut"](code/coconut/IFS.coco)
+{% sample lang="rust" %}
+[import:9-20, lang:"rust"](code/rust/IFS.rs)
 {% endmethod %}
 
 If we set the initial points to the on the equilateral triangle we saw before, we can see the Sierpinski triangle again after a few thousand iterations, as shown below:
@@ -207,6 +209,8 @@ In addition, we have written the chaos game code to take in a set of points so t
 [import, lang:"c"](code/c/IFS.c)
 {%sample lang="coco" %}
 [import, lang:"coconut"](code/coconut/IFS.coco)
+{%sample lang="rust" %}
+[import, lang:"rust"](code/rust/IFS.rs)
 {% endmethod %}
 
 ### Bibliography
diff --git a/contents/IFS/code/rust/IFS.rs b/contents/IFS/code/rust/IFS.rs
new file mode 100644
index 000000000..0e1db0249
--- /dev/null
+++ b/contents/IFS/code/rust/IFS.rs
@@ -0,0 +1,36 @@
+use rand::prelude::*;
+
+#[derive(Clone, Copy)]
+struct Point {
+    x: f64,
+    y: f64,
+}
+
+fn chaos_game(iters: usize, shapes: Vec<Point>) -> Vec<Point> {
+    let mut rng = rand::thread_rng();
+    let mut p   = Point{x: rng.gen(), y: rng.gen()};
+
+    (0..iters).into_iter().map(|_| {
+        let old_point = p;
+        let tmp = shapes[rng.gen_range(0, shapes.len())];
+        p.x = 0.5 * (p.x + tmp.x);
+        p.y = 0.5 * (p.y + tmp.y);
+        old_point
+    }).collect()
+}
+
+fn main() {
+    let shapes = vec![
+        Point{x: 0., y: 0.},
+        Point{x: 0.5, y: (0.75 as f64).sqrt()},
+        Point{x: 1., y: 0.},
+    ];
+
+    let mut out = String::new();
+
+    for point in chaos_game(10_000, shapes) {
+        out += format!("{}\t{}\n", point.x, point.y).as_str();
+    }
+
+    std::fs::write("./out.dat", out).unwrap();
+}
\ No newline at end of file

From d09a528d1a4dcf037a7eb5292f9c861c9f0bb611 Mon Sep 17 00:00:00 2001
From: Julian <jb@futureplay.de>
Date: Tue, 28 Dec 2021 01:26:00 +0100
Subject: [PATCH 2/3] Apply suggestions from code review

Co-authored-by: Dimitri Belopopsky <ShadowMitia@users.noreply.github.com>
Co-authored-by: stormofice <58337328+stormofice@users.noreply.github.com>
---
 contents/IFS/code/rust/IFS.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/contents/IFS/code/rust/IFS.rs b/contents/IFS/code/rust/IFS.rs
index 0e1db0249..476565f0f 100644
--- a/contents/IFS/code/rust/IFS.rs
+++ b/contents/IFS/code/rust/IFS.rs
@@ -1,4 +1,4 @@
-use rand::prelude::*;
+use rand::*;
 
 #[derive(Clone, Copy)]
 struct Point {
@@ -12,7 +12,7 @@ fn chaos_game(iters: usize, shapes: Vec<Point>) -> Vec<Point> {
 
     (0..iters).into_iter().map(|_| {
         let old_point = p;
-        let tmp = shapes[rng.gen_range(0, shapes.len())];
+        let tmp = shapes[rng.gen_range(0..shapes.len())];
         p.x = 0.5 * (p.x + tmp.x);
         p.y = 0.5 * (p.y + tmp.y);
         old_point
@@ -22,7 +22,7 @@ fn chaos_game(iters: usize, shapes: Vec<Point>) -> Vec<Point> {
 fn main() {
     let shapes = vec![
         Point{x: 0., y: 0.},
-        Point{x: 0.5, y: (0.75 as f64).sqrt()},
+        Point{x: 0.5, y: 0.75_f64.sqrt()},
         Point{x: 1., y: 0.},
     ];
 
@@ -32,5 +32,5 @@ fn main() {
         out += format!("{}\t{}\n", point.x, point.y).as_str();
     }
 
-    std::fs::write("./out.dat", out).unwrap();
+    std::fs::write("./sierpinski.dat", out).unwrap();
 }
\ No newline at end of file

From 6fde71c60eab2ffe2cb3fa0be2c13b29a7bde410 Mon Sep 17 00:00:00 2001
From: Julian <jb@futureplay.de>
Date: Tue, 28 Dec 2021 01:30:57 +0100
Subject: [PATCH 3/3] add a cargo toml

---
 contents/IFS/code/rust/Cargo.toml | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 contents/IFS/code/rust/Cargo.toml

diff --git a/contents/IFS/code/rust/Cargo.toml b/contents/IFS/code/rust/Cargo.toml
new file mode 100644
index 000000000..90fbca22d
--- /dev/null
+++ b/contents/IFS/code/rust/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.8.4"
+
+[[bin]]
+path = "./IFS.rs"
+name = "main"
\ No newline at end of file