nix + web stuff

remove shell scripts
implement intesections + misc function options
2025-12-02 23:44:36 -05:00 · 2025-12-02 23:13:57 -05:00 · 2025-12-02 23:10:43 -05:00 · 2025-12-02 22:41:44 -05:00 · 2025-12-02 22:40:08 -05:00 · 2025-12-02 22:39:53 -05:00
32 changed files with 4621 additions and 3635 deletions
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@ -1,4 +0,0 @@
-edition = "2021"
-fn_params_layout = "Compressed"
-fn_single_line = true
-hard_tabs = true
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@ -1,7 +1,8 @@
 [package]
 name = "ytbn_graphing_software"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
+rust-version = "1.88"
 license = "AGPL-3.0"
 repository = "https://github.com/Titaniumtown/YTBN-Graphing-Software"
 description = "Crossplatform (and web-compatible) graphing calculator"
@ -33,62 +34,72 @@ strip = false

 [dependencies]
 parsing = { path = "./parsing" }
-eframe = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+eframe = { path = "../simon-egui/crates/eframe", default-features = false, features = [
    "glow",
+    "x11",
 ] }
-egui = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+egui = { path = "../simon-egui/crates/egui", default-features = false, features = [
    "serde",
 ] }
-epaint = { git = "https://github.com/titaniumtown/egui.git", default-features = false , features = [
+epaint = { path = "../simon-egui/crates/epaint", default-features = false, features = [
    "bytemuck",
 ] }
-emath = { git = "https://github.com/titaniumtown/egui.git", default-features = false }
-egui_plot = { git = "https://github.com/titaniumtown/egui.git", default-features = false }
+emath = { path = "../simon-egui/crates/emath", default-features = false }
+egui_plot = { git = "https://github.com/emilk/egui_plot.git", default-features = false }

-
-
-shadow-rs = { version = "0.12", default-features = false }
+shadow-rs = { version = "0.38", default-features = false }
 const_format = { version = "0.2", default-features = false, features = ["fmt"] }
 cfg-if = "1"
-ruzstd = "0.5"
+ruzstd = "0.8"
 tracing = "0.1"
-itertools = "0.10"
+itertools = "0.14"
 static_assertions = "1.1"
 bincode = "1.3"
 serde = "1"
+log = "0.4"

-[dev-dependencies]
-benchmarks = { path = "./benchmarks" }
+# Note: benchmarks are in a separate crate - run with:
+# cd benchmarks && cargo bench

 [build-dependencies]
-shadow-rs = "0.12"
-epaint = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+shadow-rs = "0.38"
+epaint = { path = "../simon-egui/crates/epaint", default-features = false, features = [
    "bytemuck",
 ] }
-egui = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+egui = { path = "../simon-egui/crates/egui", default-features = false, features = [
    "serde",
 ] }
 bincode = "1.3"
 serde = "1"
 serde_json = "1"
-zstd = { version = "0.11", default-features = false, features = ["pkg-config"] }
-run_script = "0.9"
+zstd = { version = "0.13", default-features = false }
+run_script = "0.10"
 json5 = "0.4"
-itertools = "0.10"
+itertools = "0.14"

 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-instant = "0.1"
+web-time = "1.1"
 tracing-subscriber = "0.3"
-getrandom = { version = "0.2" }
+getrandom = { version = "0.3" }

 [target.'cfg(target_arch = "wasm32")'.dependencies]
-instant = { version = "0.1", features = ["wasm-bindgen"] }
-lol_alloc = "0.4.0"
+web-time = "1.1"
+lol_alloc = "0.4"
 wasm-bindgen = { version = "0.2", default-features = false, features = ["std"] }
 web-sys = "0.3"
 tracing-wasm = "0.2"
-getrandom = { version = "0.2", features = ["js"] }
-wasm-bindgen-futures = "0.4.34"
+getrandom = { version = "0.3", features = ["wasm_js"] }
+wasm-bindgen-futures = "0.4"

 [package.metadata.cargo-all-features]
 skip_optional_dependencies = true #don't test optional dependencies, only features
+
+[patch.crates-io]
+egui = { path = "../simon-egui/crates/egui" }
+epaint = { path = "../simon-egui/crates/epaint" }
+emath = { path = "../simon-egui/crates/emath" }
+ecolor = { path = "../simon-egui/crates/ecolor" }
+eframe = { path = "../simon-egui/crates/eframe" }
+egui-winit = { path = "../simon-egui/crates/egui-winit" }
+egui_glow = { path = "../simon-egui/crates/egui_glow" }
+egui-wgpu = { path = "../simon-egui/crates/egui-wgpu" }
--- a/TODO.md
+++ b/TODO.md
@ -1,14 +1,8 @@
 ## TODO:
 1. Function management
 	- Integrals between functions (too hard to implement, maybe will shelve)
-	- Display intersection between functions (would have to rewrite a lot of the function plotting handling)
-	- [Drag and drop support](https://github.com/emilk/egui/discussions/1530) in the UI to re-order functions
-	- Hide/disable functions
 	- Prevent user from making too many function entries
-	- Display function errors as tooltips or a warning box (not preventing the display of the graph)
-	- Clone functions
 2. Smart display of graph
-	- Display of intersections between functions
 3. Allow constants in min/max integral input (like pi or euler's number)
 4. Sliding values for functions (like a user-interactable slider that adjusts a variable in the function, like desmos)
 5. Fix integral display
--- a/benchmarks/Cargo.toml
+++ b/benchmarks/Cargo.toml
@ -1,13 +1,18 @@
 [package]
 name = "benchmarks"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
+rust-version = "1.88"
 license = "AGPL-3.0"

 [lib]
+bench = false
+
+[[bench]]
+name = "split_function"
+harness = false

 [dependencies]
-pprof = { version = "0.9", features = ["flamegraph"] }
-criterion = "0.3"
-criterion-macro = "0.3"
+pprof = { version = "0.14", features = ["flamegraph"] }
+criterion = { version = "0.5", features = ["html_reports"] }
 parsing = { path = "../parsing" }
--- a/benchmarks/benches/split_function.rs
+++ b/benchmarks/benches/split_function.rs
@ -0,0 +1,46 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use parsing::split_function_chars;
+use std::time::Duration;
+
+fn custom_criterion() -> Criterion {
+	Criterion::default()
+		.warm_up_time(Duration::from_millis(250))
+		.sample_size(1000)
+}
+
+fn mutli_split_function(c: &mut Criterion) {
+	let data_chars = vec![
+		"sin(x)cos(x)",
+		"x^2",
+		"2x",
+		"log10(x)",
+		"E^x",
+		"xxxxx",
+		"xsin(x)",
+		"(2x+1)(3x+1)",
+		"x**2",
+		"pipipipipipix",
+		"pi(2x+1)",
+		"(2x+1)pi",
+	]
+	.iter()
+	.map(|a| a.chars().collect::<Vec<char>>())
+	.collect::<Vec<Vec<char>>>();
+
+	let mut group = c.benchmark_group("split_function");
+	for entry in data_chars {
+		group.bench_function(entry.iter().collect::<String>(), |b| {
+			b.iter(|| {
+				split_function_chars(&entry, parsing::SplitType::Multiplication);
+			})
+		});
+	}
+	group.finish();
+}
+
+criterion_group! {
+	name = benches;
+	config = custom_criterion();
+	targets = mutli_split_function
+}
+criterion_main!(benches);
--- a/benchmarks/src/lib.rs
+++ b/benchmarks/src/lib.rs
@ -1,26 +1,18 @@
-#![feature(custom_test_frameworks)]
-#![test_runner(criterion::runner)]
+//! Benchmarks library - profiler utilities for flamegraphs

-#[allow(unused_imports)]
-use parsing::split_function_chars;
-
-#[allow(unused_imports)]
-use std::time::Duration;
 use std::{fs::File, os::raw::c_int, path::Path};

 use criterion::profiler::Profiler;
-#[allow(unused_imports)]
-use criterion::{BenchmarkId, Criterion};
-use criterion_macro::criterion;
 use pprof::ProfilerGuard;

+/// Flamegraph profiler for criterion benchmarks
 pub struct FlamegraphProfiler<'a> {
 	frequency: c_int,
 	active_profiler: Option<ProfilerGuard<'a>>,
 }

 impl<'a> FlamegraphProfiler<'a> {
-	#[allow(dead_code)]
+	/// Create a new flamegraph profiler with the given sampling frequency
 	pub fn new(frequency: c_int) -> Self {
 		FlamegraphProfiler {
 			frequency,
@ -29,7 +21,7 @@ impl<'a> FlamegraphProfiler<'a> {
 	}
 }

-impl<'a> Profiler for FlamegraphProfiler<'a> {
+impl Profiler for FlamegraphProfiler<'_> {
 	fn start_profiling(&mut self, _benchmark_id: &str, _benchmark_dir: &Path) {
 		self.active_profiler = Some(ProfilerGuard::new(self.frequency).unwrap());
 	}
@ -49,57 +41,3 @@ impl<'a> Profiler for FlamegraphProfiler<'a> {
 		}
 	}
 }
-
-#[allow(dead_code)] // this infact IS used by benchmarks
-fn custom_criterion() -> Criterion {
-	Criterion::default()
-		.warm_up_time(Duration::from_millis(250))
-		.sample_size(1000)
-}
-
-#[allow(dead_code)] // this infact IS used by benchmarks
-fn custom_criterion_flamegraph() -> Criterion {
-	custom_criterion().with_profiler(FlamegraphProfiler::new(100))
-}
-
-#[criterion(custom_criterion())]
-fn mutli_split_function(c: &mut Criterion) {
-	let data_chars = vec![
-		"sin(x)cos(x)",
-		"x^2",
-		"2x",
-		"log10(x)",
-		"E^x",
-		"xxxxx",
-		"xsin(x)",
-		"(2x+1)(3x+1)",
-		"x**2",
-		"pipipipipipix",
-		"pi(2x+1)",
-		"(2x+1)pi",
-	]
-	.iter()
-	.map(|a| a.chars().collect::<Vec<char>>())
-	.collect::<Vec<Vec<char>>>();
-
-	let mut group = c.benchmark_group("split_function");
-	for entry in data_chars {
-		group.bench_function(entry.iter().collect::<String>(), |b| {
-			b.iter(|| {
-				split_function_chars(&entry, parsing::suggestions::SplitType::Multiplication);
-			})
-		});
-	}
-	group.finish();
-}
-
-// #[criterion(custom_criterion_flamegraph())]
-// fn single_split_function(c: &mut Criterion) {
-// 	let data_chars = "(2x+1)(3x+1)".chars().collect::<Vec<char>>();
-
-// 	c.bench_function("split_function", |b| {
-// 		b.iter(|| {
-// 			split_function_chars(&data_chars);
-// 		});
-// 	});
-// }
--- a/build.rs
+++ b/build.rs
@ -1,171 +1,180 @@
 use std::{
-	collections::BTreeMap,
-	env,
-	fs::File,
-	io::{BufWriter, Write},
-	path::Path,
+    collections::BTreeMap,
+    env,
+    fs::File,
+    io::{BufWriter, Write},
+    path::Path,
+    sync::Arc,
 };

 use epaint::{
-	text::{FontData, FontDefinitions, FontTweak},
-	FontFamily,
+    FontFamily,
+    text::{FontData, FontDefinitions, FontTweak},
 };

 use run_script::ScriptOptions;

 include!(concat!(
-	env!("CARGO_MANIFEST_DIR"),
-	"/src/unicode_helper.rs"
+    env!("CARGO_MANIFEST_DIR"),
+    "/src/unicode_helper.rs"
 ));

 fn font_stripper(from: &str, out: &str, unicodes: Vec<char>) -> Result<Vec<u8>, String> {
-	let unicodes: Vec<String> = unicodes.iter().map(|c| to_unicode_hash(*c)).collect();
+    let unicodes: Vec<String> = unicodes.iter().map(|c| to_unicode_hash(*c)).collect();

-	let new_path = [&env::var("OUT_DIR").unwrap(), out].concat();
-	let unicodes_formatted = unicodes
-		.iter()
-		.map(|u| format!("U+{}", u))
-		.collect::<Vec<String>>()
-		.join(",");
+    let new_path = [&env::var("OUT_DIR").unwrap(), out].concat();
+    let unicodes_formatted = unicodes
+        .iter()
+        .map(|u| format!("U+{}", u))
+        .collect::<Vec<String>>()
+        .join(",");

-	// Test to see if pyftsubset is found
-	let pyftsubset_detect = run_script::run("whereis pyftsubset", &(vec![]), &ScriptOptions::new());
-	match pyftsubset_detect {
-		Ok((_i, s1, _s2)) => {
-			if s1 == "pyftsubset: " {
-				return Err(String::from("pyftsubset not found"));
-			}
-		}
-		// It was not, return an error and abort
-		Err(x) => return Err(x.to_string()),
-	}
+    // Test to see if pyftsubset is found
+    let pyftsubset_detect = run_script::run("whereis pyftsubset", &(vec![]), &ScriptOptions::new());
+    match pyftsubset_detect {
+        Ok((_i, s1, _s2)) => {
+            if s1 == "pyftsubset: " {
+                return Err(String::from("pyftsubset not found"));
+            }
+        }
+        // It was not, return an error and abort
+        Err(x) => return Err(x.to_string()),
+    }

-	let script_result = run_script::run(
-		&format!(
-			"pyftsubset {}/assets/{} --unicodes={}
+    let script_result = run_script::run(
+        &format!(
+            "pyftsubset {}/assets/{} --unicodes={}
 			mv {}/assets/{} {}",
-			env!("CARGO_MANIFEST_DIR"),
-			from,
-			unicodes_formatted,
-			env!("CARGO_MANIFEST_DIR"),
-			from.replace(".ttf", ".subset.ttf"),
-			new_path
-		),
-		&(vec![]),
-		&ScriptOptions::new(),
-	);
+            env!("CARGO_MANIFEST_DIR"),
+            from,
+            unicodes_formatted,
+            env!("CARGO_MANIFEST_DIR"),
+            from.replace(".ttf", ".subset.ttf"),
+            new_path
+        ),
+        &(vec![]),
+        &ScriptOptions::new(),
+    );

-	if let Ok((_, _, error)) = script_result {
-		if error.is_empty() {
-			return Ok(std::fs::read(new_path).unwrap());
-		} else {
-			return Err(error);
-		}
-	} else if let Err(error) = script_result {
-		return Err(error.to_string());
-	}
-	unreachable!()
+    if let Ok((_, _, error)) = script_result {
+        if error.is_empty() {
+            return Ok(std::fs::read(new_path).unwrap());
+        } else {
+            return Err(error);
+        }
+    } else if let Err(error) = script_result {
+        return Err(error.to_string());
+    }
+    unreachable!()
 }

 fn main() {
-	// rebuild if new commit or contents of `assets` folder changed
-	println!("cargo:rerun-if-changed=.git/logs/HEAD");
-	println!("cargo:rerun-if-changed=assets/*");
+    // rebuild if new commit or contents of `assets` folder changed
+    println!("cargo:rerun-if-changed=.git/logs/HEAD");
+    println!("cargo:rerun-if-changed=assets/*");

-	shadow_rs::new().expect("Could not initialize shadow_rs");
+    shadow_rs::ShadowBuilder::builder()
+        .build()
+        .expect("Could not initialize shadow_rs");

-	let mut main_chars: Vec<char> =
+    let mut main_chars: Vec<char> =
 		b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzsu0123456789?.,!(){}[]-_=+-/<>'\\ :^*`@#$%&|~;"
 			.iter()
 			.map(|c| *c as char)
 			.collect();

-	main_chars.append(&mut vec!['π', '"']);
+    main_chars.append(&mut vec!['π', '"']);

-	{
-		let filtered_chars: Vec<char> = main_chars
-			.iter()
-			.filter(|c| !c.is_alphanumeric())
-			.cloned()
-			.collect();
+    {
+        let filtered_chars: Vec<char> = main_chars
+            .iter()
+            .filter(|c| !c.is_alphanumeric())
+            .cloned()
+            .collect();

-		let chars_array = format!(
-			"const VALID_EXTRA_CHARS: [char; {}] = {};",
-			filtered_chars.len(),
-			to_chars_array(filtered_chars),
-		);
-		let path = Path::new(&env::var("OUT_DIR").unwrap()).join("valid_chars.rs");
-		let mut file = BufWriter::new(File::create(path).expect("Could not save compressed_data"));
+        let chars_array = format!(
+            "const VALID_EXTRA_CHARS: [char; {}] = {};",
+            filtered_chars.len(),
+            to_chars_array(filtered_chars),
+        );
+        let path = Path::new(&env::var("OUT_DIR").unwrap()).join("valid_chars.rs");
+        let mut file = BufWriter::new(File::create(path).expect("Could not save compressed_data"));

-		write!(&mut file, "{}", chars_array).expect("unable to write chars_array");
-	}
+        write!(&mut file, "{}", chars_array).expect("unable to write chars_array");
+    }

-	let fonts = FontDefinitions {
-		font_data: BTreeMap::from([
-			(
-				"Ubuntu-Light".to_owned(),
-				FontData::from_owned(
-					font_stripper(
-						"Ubuntu-Light.ttf",
-						"ubuntu-light.ttf",
-						[main_chars, vec!['∫']].concat(),
-					)
-					.unwrap(),
-				),
-			),
-			(
-				"NotoEmoji-Regular".to_owned(),
-				FontData::from_owned(
-					font_stripper(
-						"NotoEmoji-Regular.ttf",
-						"noto-emoji.ttf",
-						vec!['🌞', '🌙', '✖'],
-					)
-					.unwrap(),
-				),
-			),
-			(
-				"emoji-icon-font".to_owned(),
-				FontData::from_owned(
-					font_stripper("emoji-icon-font.ttf", "emoji-icon.ttf", vec!['⚙']).unwrap(),
-				)
-				.tweak(FontTweak {
-					scale: 0.8,
-					y_offset_factor: 0.07,
-					y_offset: 0.0,
-					baseline_offset_factor: -0.0333,
-				}),
-			),
-		]),
-		families: BTreeMap::from([
-			(
-				FontFamily::Monospace,
-				vec![
-					"Ubuntu-Light".to_owned(),
-					"NotoEmoji-Regular".to_owned(),
-					"emoji-icon-font".to_owned(),
-				],
-			),
-			(
-				FontFamily::Proportional,
-				vec![
-					"Ubuntu-Light".to_owned(),
-					"NotoEmoji-Regular".to_owned(),
-					"emoji-icon-font".to_owned(),
-				],
-			),
-		]),
-	};
+    let fonts = FontDefinitions {
+        font_data: BTreeMap::from([
+            (
+                "Ubuntu-Light".to_owned(),
+                Arc::new(FontData::from_owned(
+                    font_stripper(
+                        "Ubuntu-Light.ttf",
+                        "ubuntu-light.ttf",
+                        [main_chars, vec!['∫']].concat(),
+                    )
+                    .unwrap(),
+                )),
+            ),
+            (
+                "NotoEmoji-Regular".to_owned(),
+                Arc::new(FontData::from_owned(
+                    font_stripper(
+                        "NotoEmoji-Regular.ttf",
+                        "noto-emoji.ttf",
+                        vec!['🌞', '🌙', '✖'],
+                    )
+                    .unwrap(),
+                )),
+            ),
+            (
+                "emoji-icon-font".to_owned(),
+                Arc::new(
+                    FontData::from_owned(
+                        font_stripper(
+                            "emoji-icon-font.ttf",
+                            "emoji-icon.ttf",
+                            vec!['⚙', '⎘', '👁', '○', '⬆', '⬇', '⚠'],
+                        )
+                        .unwrap(),
+                    )
+                    .tweak(FontTweak {
+                        scale: 0.8,
+                        y_offset_factor: 0.07,
+                        y_offset: 0.0,
+                    }),
+                ),
+            ),
+        ]),
+        families: BTreeMap::from([
+            (
+                FontFamily::Monospace,
+                vec![
+                    "Ubuntu-Light".to_owned(),
+                    "NotoEmoji-Regular".to_owned(),
+                    "emoji-icon-font".to_owned(),
+                ],
+            ),
+            (
+                FontFamily::Proportional,
+                vec![
+                    "Ubuntu-Light".to_owned(),
+                    "NotoEmoji-Regular".to_owned(),
+                    "emoji-icon-font".to_owned(),
+                ],
+            ),
+        ]),
+    };

-	let data = bincode::serialize(&fonts).unwrap();
+    let data = bincode::serialize(&fonts).unwrap();

-	let zstd_levels = zstd::compression_level_range();
-	let data_compressed =
-		zstd::encode_all(data.as_slice(), *zstd_levels.end()).expect("Could not compress data");
+    let zstd_levels = zstd::compression_level_range();
+    let data_compressed =
+        zstd::encode_all(data.as_slice(), *zstd_levels.end()).expect("Could not compress data");

-	let path = Path::new(&env::var("OUT_DIR").unwrap()).join("compressed_data");
-	let mut file = BufWriter::new(File::create(path).expect("Could not save compressed_data"));
+    let path = Path::new(&env::var("OUT_DIR").unwrap()).join("compressed_data");
+    let mut file = BufWriter::new(File::create(path).expect("Could not save compressed_data"));

-	file.write_all(data_compressed.as_slice())
-		.expect("Failed to save compressed data");
+    file.write_all(data_compressed.as_slice())
+        .expect("Failed to save compressed data");
 }
--- a/build.sh
+++ b/build.sh
@ -1,76 +0,0 @@
-#!/bin/bash
-set -e
-
-rm -fr tmp | true
-rm -fr pkg | true
-
-# cargo test
-
-export RUSTFLAGS="--cfg=web_sys_unstable_apis"
-
-if test "$1" == "" || test "$1" == "release"; then
-    time cargo build --release --target wasm32-unknown-unknown -Z build-std=core,compiler_builtins,alloc,std,panic_abort,panic_unwind,proc_macro,unwind -Z build-std-features=panic_immediate_abort --lib --timings
-    llvm-strip -s target/wasm32-unknown-unknown/release/ytbn_graphing_software.wasm
-    export TYPE="release"
-    elif test "$1" == "debug"; then
-    time cargo build --target wasm32-unknown-unknown -Z build-std=core,compiler_builtins,alloc,std,panic_abort,panic_unwind,proc_macro,unwind -Z build-std-features=panic-unwind --lib
-    export TYPE="debug"
-else
-    echo "ERROR: build.sh, argument invalid"
-    exit 1
-fi
-
-pre_size=$(du -sb target/wasm32-unknown-unknown/${TYPE}/ytbn_graphing_software.wasm | awk '{ print $1 }')
-echo "compiled size: $pre_size"
-
-wasm-bindgen target/wasm32-unknown-unknown/${TYPE}/ytbn_graphing_software.wasm --out-dir pkg --target web --no-typescript
-
-if test "$TYPE" == "release"; then
-   echo "running wasm-opt..."
-   time wasm-opt --converge -Oz --code-folding --const-hoisting --coalesce-locals-learning --vacuum --merge-locals --merge-blocks --fast-math --precompute --rse --low-memory-unused --once-reduction --optimize-instructions --licm --intrinsic-lowering \
-   --dce --dae-optimizing --inlining-optimizing --strip-debug \
-   -o pkg/ytbn_graphing_software_bg_2.wasm pkg/ytbn_graphing_software_bg.wasm
-   mv pkg/ytbn_graphing_software_bg_2.wasm pkg/ytbn_graphing_software_bg.wasm
-fi
-
-mkdir tmp
-cp -r pkg/ytbn_graphing_software_bg.wasm tmp/
-
-sed -i 's/fatal: true/fatal: false/g' pkg/ytbn_graphing_software.js
-
-sed -i "s/TextEncoder('utf-8')/TextEncoder('utf-8', { ignoreBOM: true, fatal: false })/g" pkg/ytbn_graphing_software.js
-
-#minify pkg/ytbn_graphing_software.js > tmp/ytbn_graphing_software.js
-
-cp www/* tmp/
-cp assets/logo.svg tmp/
-#minify www/index.html > tmp/index.html
-#minify www/sw.js > tmp/sw.js
-cp www/index.html www/sw.js pkg/ytbn_graphing_software.js tmp/
-
-
-wasm_sum=($(md5sum tmp/ytbn_graphing_software_bg.wasm))
-js_sum=($(md5sum tmp/ytbn_graphing_software.js))
-sum=($(echo "$wasm_sum $js_sum" | md5sum))
-
-echo "sum: $sum"
-
-new_wasm_name="${sum}.wasm"
-new_js_name="${sum}.js"
-
-
-mv tmp/ytbn_graphing_software_bg.wasm "tmp/${new_wasm_name}"
-mv tmp/ytbn_graphing_software.js "tmp/${new_js_name}"
-
-
-sed -i "s/ytbn_graphing_software_bg.wasm/${new_wasm_name}/g" tmp/*.*
-
-sed -i "s/ytbn_graphing_software.js/${new_js_name}/g" tmp/*.*
-
-
-
-new_size=$(du -b tmp/${new_wasm_name} | awk '{ print $1 }')
-diff=$(echo "scale=5 ; $new_size / $pre_size" | bc)
-percent=$(echo "scale=5 ; (1-$diff)*100" | bc)
-echo "Total size: $(du -sb tmp)"
-echo "Binary size: $new_size reduced: $percent%"
--- a/flake.lock
+++ b/flake.lock
@ -0,0 +1,100 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1764517877,
+        "narHash": "sha256-pp3uT4hHijIC8JUK5MEqeAWmParJrgBVzHLNfJDZxg4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "2d293cbfa5a793b4c50d17c05ef9e385b90edf6c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay",
+        "simon-egui": "simon-egui"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1764729618,
+        "narHash": "sha256-z4RA80HCWv2los1KD346c+PwNPzMl79qgl7bCVgz8X0=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "52764074a85145d5001bf0aa30cb71936e9ad5b8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "simon-egui": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1764730109,
+        "narHash": "sha256-vNETC0oq6tKJKF8KOGQKKIWRom38m0RwGgi3MPBrRx8=",
+        "owner": "Titaniumtown",
+        "repo": "egui",
+        "rev": "b63c21d70150f1b414370f0f9a8af56e886662f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Titaniumtown",
+        "repo": "egui",
+        "rev": "b63c21d70150f1b414370f0f9a8af56e886662f4",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
--- a/flake.nix
+++ b/flake.nix
@ -0,0 +1,225 @@
+{
+  description = "YTBN Graphing Software - Web-compatible graphing calculator";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    simon-egui = {
+      url = "github:Titaniumtown/egui/b63c21d70150f1b414370f0f9a8af56e886662f4";
+      flake = false;
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, rust-overlay, simon-egui }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+
+        # Use nightly rust with wasm32 target
+        rustToolchain = pkgs.rust-bin.nightly."2025-05-01".default.override {
+          targets = [ "wasm32-unknown-unknown" ];
+        };
+
+        rustPlatform = pkgs.makeRustPlatform {
+          cargo = rustToolchain;
+          rustc = rustToolchain;
+        };
+
+        # Build wasm-bindgen-cli matching the version in Cargo.lock (0.2.106)
+        wasm-bindgen-cli = rustPlatform.buildRustPackage rec {
+          pname = "wasm-bindgen-cli";
+          version = "0.2.106";
+
+          src = pkgs.fetchCrate {
+            inherit pname version;
+            hash = "sha256-M6WuGl7EruNopHZbqBpucu4RWz44/MSdv6f0zkYw+44=";
+          };
+
+          cargoHash = "sha256-ElDatyOwdKwHg3bNH/1pcxKI7LXkhsotlDPQjiLHBwA=";
+
+          nativeBuildInputs = [ pkgs.pkg-config ];
+          buildInputs = [ pkgs.openssl ] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
+            pkgs.curl
+            pkgs.darwin.apple_sdk.frameworks.Security
+          ];
+
+          # Tests require network access
+          doCheck = false;
+        };
+
+        # Create a combined source with the main project and dependencies
+        combinedSrc = pkgs.stdenv.mkDerivation {
+          name = "ytbn-combined-src";
+          phases = [ "installPhase" ];
+          installPhase = ''
+            mkdir -p $out/integral_site_rust
+            mkdir -p $out/simon-egui
+
+            cp -r ${./.}/* $out/integral_site_rust/
+            cp -r ${simon-egui}/* $out/simon-egui/
+
+            chmod -R u+w $out
+          '';
+        };
+
+        # Build the wasm library using rustPlatform
+        wasmLib = rustPlatform.buildRustPackage {
+          pname = "ytbn-graphing-software-wasm";
+          version = "0.1.0";
+
+          src = combinedSrc;
+          sourceRoot = "${combinedSrc.name}/integral_site_rust";
+
+          cargoLock = {
+            lockFile = ./Cargo.lock;
+            outputHashes = {
+              "egui_plot-0.34.0" = "sha256-lk0yeljsvkHzF0eLD5llQ+05DycPqG2jGzhBvQ0X6Qw=";
+            };
+          };
+
+          nativeBuildInputs = with pkgs; [
+            python3Packages.fonttools
+            pkg-config
+            clang
+          ];
+
+          buildInputs = with pkgs; [
+            openssl
+            zstd
+          ];
+
+          buildPhase = ''
+            runHook preBuild
+
+            export HOME=$TMPDIR
+
+            cargo build \
+              --release \
+              --lib \
+              --target wasm32-unknown-unknown
+
+            runHook postBuild
+          '';
+
+          installPhase = ''
+            runHook preInstall
+            mkdir -p $out/lib
+            cp target/wasm32-unknown-unknown/release/*.wasm $out/lib/
+            runHook postInstall
+          '';
+
+          doCheck = false;
+        };
+
+        # Final web package with wasm-bindgen processing
+        ytbn-graphing-software-web = pkgs.stdenv.mkDerivation {
+          pname = "ytbn-graphing-software-web";
+          version = "0.1.0";
+
+          src = ./.;
+
+          nativeBuildInputs = [
+            wasm-bindgen-cli
+            pkgs.binaryen
+          ];
+
+          buildPhase = ''
+            runHook preBuild
+
+            # Generate JS bindings
+            wasm-bindgen ${wasmLib}/lib/ytbn_graphing_software.wasm \
+              --out-dir out \
+              --out-name ytbn_graphing_software \
+              --target web \
+              --no-typescript
+
+            # Optimize wasm (enable features used by modern rust wasm targets)
+            wasm-opt out/ytbn_graphing_software_bg.wasm \
+              -O2 --fast-math \
+              --enable-bulk-memory \
+              --enable-nontrapping-float-to-int \
+              --enable-sign-ext \
+              --enable-mutable-globals \
+              -o out/ytbn_graphing_software_bg.wasm
+
+            runHook postBuild
+          '';
+
+          installPhase = ''
+            runHook preInstall
+
+            mkdir -p $out
+
+            # Copy wasm and js files
+            cp out/ytbn_graphing_software_bg.wasm $out/
+            cp out/ytbn_graphing_software.js $out/
+
+            # Copy static web assets
+            cp www/index.html $out/
+            cp www/manifest.json $out/
+            cp www/sw.js $out/
+
+            # Copy logo
+            cp assets/logo.svg $out/
+
+            runHook postInstall
+          '';
+
+          meta = with pkgs.lib; {
+            description = "Web-compatible graphing calculator similar to Desmos";
+            homepage = "https://github.com/Titaniumtown/YTBN-Graphing-Software";
+            license = licenses.agpl3Only;
+            platforms = platforms.all;
+          };
+        };
+      in
+      {
+        packages = {
+          default = ytbn-graphing-software-web;
+          web = ytbn-graphing-software-web;
+          wasm = wasmLib;
+        };
+
+        devShells.default = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [
+            rustToolchain
+            wasm-bindgen-cli
+            binaryen
+            python3Packages.fonttools
+            rust-analyzer
+            pkg-config
+            clang
+
+            # Runtime deps for native builds
+            libxkbcommon
+            libGL
+            wayland
+            xorg.libX11
+            xorg.libXcursor
+            xorg.libXi
+          ];
+
+          buildInputs = with pkgs; [
+            openssl
+            zstd
+          ];
+
+          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (with pkgs; [
+            libxkbcommon
+            libGL
+            wayland
+            xorg.libX11
+            xorg.libXcursor
+            xorg.libXi
+          ]);
+        };
+      }
+    );
+}
--- a/parsing/src/autocomplete.rs
+++ b/parsing/src/autocomplete.rs
@ -1,4 +1,4 @@
-use std::{hint::unreachable_unchecked, intrinsics::assume};
+use std::hint::unreachable_unchecked;

 use crate::{generate_hint, Hint, HINT_EMPTY};

@ -18,7 +18,7 @@ impl Movement {
 	pub const fn is_complete(&self) -> bool { matches!(&self, &Self::Complete) }
 }

-impl const Default for Movement {
+impl Default for Movement {
 	fn default() -> Self { Self::None }
 }

@ -29,7 +29,7 @@ pub struct AutoComplete<'a> {
 	pub string: String,
 }

-impl<'a> const Default for AutoComplete<'a> {
+impl<'a> Default for AutoComplete<'a> {
 	fn default() -> AutoComplete<'a> { AutoComplete::EMPTY }
 }

@ -70,12 +70,6 @@ impl<'a> AutoComplete<'a> {
 				// Impossible for plural hints to be singular or non-existant
 				debug_assert!(hints.len() > 1); // check on debug

-				// Hint to the compiler
-				unsafe {
-					assume(hints.len() > 1);
-					assume(!hints.is_empty());
-				}
-
 				match movement {
 					Movement::Up => {
 						// Wrap self.i to maximum `i` value if needed
--- a/parsing/src/lib.rs
+++ b/parsing/src/lib.rs
@ -1,7 +1,3 @@
-#![feature(const_trait_impl)]
-#![feature(core_intrinsics)]
-#![feature(const_mut_refs)]
-#![feature(const_for)]
 mod autocomplete;
 mod autocomplete_hashmap;
 mod parsing;
--- a/parsing/src/parsing.rs
+++ b/parsing/src/parsing.rs
@ -58,7 +58,7 @@ impl FlatExWrapper {
 			.as_ref()
 			.map(|f| {
 				f.clone()
-					.partial_iter((0..=n).map(|_| 0))
+					.partial_iter((0..n).map(|_| 0))
 					.map(Self::new)
 					.unwrap_or(Self::EMPTY)
 			})
@ -66,7 +66,7 @@ impl FlatExWrapper {
 	}
 }

-impl const Default for FlatExWrapper {
+impl Default for FlatExWrapper {
 	fn default() -> FlatExWrapper { FlatExWrapper::EMPTY }
 }
 /// Function that includes f(x), f'(x), f'(x)'s string representation, and f''(x)
--- a/parsing/src/splitting.rs
+++ b/parsing/src/splitting.rs
@ -127,6 +127,7 @@ pub fn split_function_chars(chars: &[char], split: SplitType) -> Vec<String> {

 		// Append split
 		if curr_c.splitable(c, &prev_char, &split) {
+			// create new buffer
 			data.push(String::new());
 			last = unsafe { data.last_mut().unwrap_unchecked() };
 		}
--- a/parsing/src/suggestions.rs
+++ b/parsing/src/suggestions.rs
@ -1,5 +1,4 @@
 use crate::{split_function_chars, SplitType};
-use std::intrinsics::assume;

 pub const HINT_EMPTY: Hint = Hint::Single("x^2");
 const HINT_CLOSED_PARENS: Hint = Hint::Single(")");
@ -20,10 +19,6 @@ pub fn generate_hint<'a>(input: &str) -> &'a Hint<'a> {
 	} else {
 		let chars: Vec<char> = input.chars().collect::<Vec<char>>();

-		unsafe {
-			assume(!chars.is_empty());
-		}
-
 		let key = get_last_term(&chars);
 		match key {
 			Some(key) => {
--- a/push.sh
+++ b/push.sh
@ -1,15 +0,0 @@
-#!/bin/bash
-set -e #kill script if error occurs
-
-cargo test
-
-bash build.sh release
-
-echo "rsyncing"
-# rsync -av --delete --info=progress2 tmp/ rpi-public:/mnt/hdd/http_share/ytbn/
-rsync -av --delete --info=progress2 --exclude=".git" tmp/ ../titaniumtown.github.io/
-rm -fr tmp
-cd ../titaniumtown.github.io
-git add .
-git commit -m "update" | true
-git push
--- a/shell.nix
+++ b/shell.nix
@ -0,0 +1,30 @@
+{
+  pkgs ? import <nixpkgs> { },
+}:
+pkgs.mkShell rec {
+  libs = with pkgs; [
+    # wayland
+    libxkbcommon
+    libGL
+    wayland
+
+    libx11
+    libxcursor
+    libxi
+
+    clang
+  ];
+
+  nativeBuildInputs =
+    with pkgs;
+    [
+      rustc
+      cargo
+      rust-analyzer
+      python3Packages.fonttools
+    ]
+    ++ libs;
+
+  # add libs to path
+  LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath libs}";
+}
--- a/src/consts.rs
+++ b/src/consts.rs
@ -5,13 +5,13 @@ shadow!(build);

 /// Constant string that has a string containing information about the build.
 pub const BUILD_INFO: &str = formatc!(
-	"Commit: {} ({})\nBuild Date: {}\nPackage Version: {}\nRust Channel: {}\nRust Version: {}",
-	&build::SHORT_COMMIT,
-	&build::BRANCH,
-	&build::BUILD_TIME,
-	&build::PKG_VERSION,
-	&build::RUST_CHANNEL,
-	&build::RUST_VERSION,
+    "Commit: {} ({})\nBuild Date: {}\nPackage Version: {}\nRust Channel: {}\nRust Version: {}",
+    &build::SHORT_COMMIT,
+    &build::BRANCH,
+    &build::BUILD_TIME,
+    &build::PKG_VERSION,
+    &build::RUST_CHANNEL,
+    &build::RUST_VERSION,
 );

 pub const FONT_SIZE: f32 = 14.0;
@ -31,24 +31,24 @@ pub const DEFAULT_INTEGRAL_NUM: usize = 100;
 /// Colors used for plotting
 // Colors commented out are used elsewhere and are not included here for better user experience
 pub const COLORS: [Color32; 13] = [
-	Color32::RED,
-	// Color32::GREEN,
-	// Color32::YELLOW,
-	// Color32::BLUE,
-	Color32::BROWN,
-	Color32::GOLD,
-	Color32::GRAY,
-	Color32::WHITE,
-	Color32::LIGHT_YELLOW,
-	Color32::LIGHT_GREEN,
-	// Color32::LIGHT_BLUE,
-	Color32::LIGHT_GRAY,
-	Color32::LIGHT_RED,
-	Color32::DARK_GRAY,
-	// Color32::DARK_RED,
-	Color32::KHAKI,
-	Color32::DARK_GREEN,
-	Color32::DARK_BLUE,
+    Color32::RED,
+    // Color32::GREEN,
+    // Color32::YELLOW,
+    // Color32::BLUE,
+    Color32::BROWN,
+    Color32::GOLD,
+    Color32::GRAY,
+    Color32::WHITE,
+    Color32::LIGHT_YELLOW,
+    Color32::LIGHT_GREEN,
+    // Color32::LIGHT_BLUE,
+    Color32::LIGHT_GRAY,
+    Color32::LIGHT_RED,
+    Color32::DARK_GRAY,
+    // Color32::DARK_RED,
+    Color32::KHAKI,
+    Color32::DARK_GREEN,
+    Color32::DARK_BLUE,
 ];

 const_assert!(!COLORS.is_empty());
--- a/src/function_entry.rs
+++ b/src/function_entry.rs
@ -1,482 +1,523 @@
 use crate::math_app::AppSettings;
-use crate::misc::{newtons_method_helper, step_helper, EguiHelper};
+use crate::misc::{EguiHelper, newtons_method_helper, step_helper};
 use egui::{Checkbox, Context};
 use egui_plot::{Bar, BarChart, PlotPoint, PlotUi};

 use epaint::Color32;
-use parsing::{generate_hint, AutoComplete};
-use parsing::{process_func_str, BackingFunction};
-use serde::{ser::SerializeStruct, Deserialize, Deserializer, Serialize, Serializer};
+use parsing::{AutoComplete, generate_hint};
+use parsing::{BackingFunction, process_func_str};
+use serde::{Deserialize, Deserializer, Serialize, Serializer, ser::SerializeStruct};
 use std::{
-	fmt::{self, Debug},
-	hash::{Hash, Hasher},
-	intrinsics::assume,
+    fmt::{self, Debug},
+    hash::{Hash, Hasher},
 };

 /// Represents the possible variations of Riemann Sums
 #[derive(PartialEq, Eq, Debug, Copy, Clone, Default)]
 pub enum Riemann {
-	#[default]
-	Left,
+    #[default]
+    Left,

-	Middle,
-	Right,
+    Middle,
+    Right,
 }

 impl fmt::Display for Riemann {
-	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "{:?}", self) }
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{:?}", self)
+    }
 }

 /// `FunctionEntry` is a function that can calculate values, integrals, derivatives, etc etc
 #[derive(Clone)]
 pub struct FunctionEntry {
-	/// The `BackingFunction` instance that is used to generate `f(x)`, `f'(x)`, and `f''(x)`
-	function: BackingFunction,
+    /// The `BackingFunction` instance that is used to generate `f(x)`, `f'(x)`, and `f''(x)`
+    function: BackingFunction,

-	/// Stores a function string (that hasn't been processed via `process_func_str`) to display to the user
-	pub raw_func_str: String,
+    /// Stores a function string (that hasn't been processed via `process_func_str`) to display to the user
+    pub raw_func_str: String,

-	/// If calculating/displayingintegrals are enabled
-	pub integral: bool,
+    /// If calculating/displayingintegrals are enabled
+    pub integral: bool,

-	/// If displaying derivatives are enabled (note, they are still calculated for other purposes)
-	pub derivative: bool,
+    /// If displaying derivatives are enabled (note, they are still calculated for other purposes)
+    pub derivative: bool,

-	pub nth_derviative: bool,
+    pub nth_derviative: bool,

-	pub back_data: Vec<PlotPoint>,
-	pub integral_data: Option<(Vec<Bar>, f64)>,
-	pub derivative_data: Vec<PlotPoint>,
-	pub extrema_data: Vec<PlotPoint>,
-	pub root_data: Vec<PlotPoint>,
-	nth_derivative_data: Option<Vec<PlotPoint>>,
+    /// If the function is visible on the graph
+    pub visible: bool,

-	pub autocomplete: AutoComplete<'static>,
+    pub back_data: Vec<PlotPoint>,
+    pub integral_data: Option<(Vec<Bar>, f64)>,
+    pub derivative_data: Vec<PlotPoint>,
+    pub extrema_data: Vec<PlotPoint>,
+    pub root_data: Vec<PlotPoint>,
+    nth_derivative_data: Option<Vec<PlotPoint>>,

-	test_result: Option<String>,
-	curr_nth: usize,
+    pub autocomplete: AutoComplete<'static>,

-	pub settings_opened: bool,
+    test_result: Option<String>,
+    curr_nth: usize,
+
+    pub settings_opened: bool,
 }

 impl Hash for FunctionEntry {
-	fn hash<H: Hasher>(&self, state: &mut H) {
-		self.raw_func_str.hash(state);
-		self.integral.hash(state);
-		self.nth_derviative.hash(state);
-		self.curr_nth.hash(state);
-		self.settings_opened.hash(state);
-	}
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.raw_func_str.hash(state);
+        self.integral.hash(state);
+        self.nth_derviative.hash(state);
+        self.curr_nth.hash(state);
+        self.settings_opened.hash(state);
+        self.visible.hash(state);
+    }
 }

 impl Serialize for FunctionEntry {
-	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-	where
-		S: Serializer,
-	{
-		let mut s = serializer.serialize_struct("FunctionEntry", 4)?;
-		s.serialize_field("raw_func_str", &self.raw_func_str)?;
-		s.serialize_field("integral", &self.integral)?;
-		s.serialize_field("derivative", &self.derivative)?;
-		s.serialize_field("curr_nth", &self.curr_nth)?;
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut s = serializer.serialize_struct("FunctionEntry", 5)?;
+        s.serialize_field("raw_func_str", &self.raw_func_str)?;
+        s.serialize_field("integral", &self.integral)?;
+        s.serialize_field("derivative", &self.derivative)?;
+        s.serialize_field("curr_nth", &self.curr_nth)?;
+        s.serialize_field("visible", &self.visible)?;

-		s.end()
-	}
+        s.end()
+    }
 }

 impl<'de> Deserialize<'de> for FunctionEntry {
-	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-	where
-		D: Deserializer<'de>,
-	{
-		#[derive(Deserialize)]
-		struct Helper {
-			raw_func_str: String,
-			integral: bool,
-			derivative: bool,
-			curr_nth: usize,
-		}
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        #[derive(Deserialize)]
+        struct Helper {
+            raw_func_str: String,
+            integral: bool,
+            derivative: bool,
+            curr_nth: usize,
+            #[serde(default = "default_visible")]
+            visible: bool,
+        }

-		let helper = Helper::deserialize(deserializer)?;
-		let mut new_func_entry = FunctionEntry::default();
-		let gen_func = BackingFunction::new(&helper.raw_func_str);
-		match gen_func {
-			Ok(func) => new_func_entry.function = func,
-			Err(x) => new_func_entry.test_result = Some(x),
-		}
+        fn default_visible() -> bool {
+            true
+        }

-		new_func_entry.autocomplete = AutoComplete {
-			i: 0,
-			hint: generate_hint(&helper.raw_func_str),
-			string: helper.raw_func_str,
-		};
+        let helper = Helper::deserialize(deserializer)?;
+        let mut new_func_entry = FunctionEntry::default();
+        let gen_func = BackingFunction::new(&helper.raw_func_str);
+        match gen_func {
+            Ok(func) => new_func_entry.function = func,
+            Err(x) => new_func_entry.test_result = Some(x),
+        }

-		new_func_entry.integral = helper.integral;
-		new_func_entry.derivative = helper.derivative;
-		new_func_entry.curr_nth = helper.curr_nth;
+        new_func_entry.autocomplete = AutoComplete {
+            i: 0,
+            hint: generate_hint(&helper.raw_func_str),
+            string: helper.raw_func_str,
+        };

-		Ok(new_func_entry)
-	}
+        new_func_entry.integral = helper.integral;
+        new_func_entry.derivative = helper.derivative;
+        new_func_entry.curr_nth = helper.curr_nth;
+        new_func_entry.visible = helper.visible;
+
+        Ok(new_func_entry)
+    }
 }

-impl const Default for FunctionEntry {
-	/// Creates default FunctionEntry instance (which is empty)
-	fn default() -> FunctionEntry {
-		FunctionEntry {
-			function: BackingFunction::default(),
-			raw_func_str: String::new(),
-			integral: false,
-			derivative: false,
-			nth_derviative: false,
-			back_data: Vec::new(),
-			integral_data: None,
-			derivative_data: Vec::new(),
-			extrema_data: Vec::new(),
-			root_data: Vec::new(),
-			nth_derivative_data: None,
-			autocomplete: AutoComplete::EMPTY,
-			test_result: None,
-			curr_nth: 3,
-			settings_opened: false,
-		}
-	}
+impl Default for FunctionEntry {
+    /// Creates default FunctionEntry instance (which is empty)
+    fn default() -> FunctionEntry {
+        FunctionEntry {
+            function: BackingFunction::default(),
+            raw_func_str: String::new(),
+            integral: false,
+            derivative: false,
+            nth_derviative: false,
+            visible: true,
+            back_data: Vec::new(),
+            integral_data: None,
+            derivative_data: Vec::new(),
+            extrema_data: Vec::new(),
+            root_data: Vec::new(),
+            nth_derivative_data: None,
+            autocomplete: AutoComplete::EMPTY,
+            test_result: None,
+            curr_nth: 3,
+            settings_opened: false,
+        }
+    }
 }

 impl FunctionEntry {
-	pub const fn is_some(&self) -> bool { !self.function.is_none() }
+    pub const fn is_some(&self) -> bool {
+        !self.function.is_none()
+    }

-	pub fn settings_window(&mut self, ctx: &Context) {
-		let mut invalidate_nth = false;
-		egui::Window::new(format!("Settings: {}", self.raw_func_str))
-			.open(&mut self.settings_opened)
-			.default_pos([200.0, 200.0])
-			.resizable(false)
-			.collapsible(false)
-			.show(ctx, |ui| {
-				ui.add(Checkbox::new(
-					&mut self.nth_derviative,
-					"Display Nth Derivative",
-				));
+    pub fn settings_window(&mut self, ctx: &Context) {
+        let mut invalidate_nth = false;
+        egui::Window::new(format!("Settings: {}", self.raw_func_str))
+            .open(&mut self.settings_opened)
+            .default_pos([200.0, 200.0])
+            .resizable(false)
+            .collapsible(false)
+            .show(ctx, |ui| {
+                ui.add(Checkbox::new(
+                    &mut self.nth_derviative,
+                    "Display Nth Derivative",
+                ));

-				if ui
-					.add(egui::Slider::new(&mut self.curr_nth, 3..=5).text("Nth Derivative"))
-					.changed()
-				{
-					invalidate_nth = true;
-				}
-			});
+                if ui
+                    .add(egui::Slider::new(&mut self.curr_nth, 3..=5).text("Nth Derivative"))
+                    .changed()
+                {
+                    invalidate_nth = true;
+                }
+            });

-		if invalidate_nth {
-			self.function.generate_derivative(self.curr_nth);
-			self.clear_nth();
-		}
-	}
+        if invalidate_nth {
+            self.function.generate_derivative(self.curr_nth);
+            self.clear_nth();
+        }
+    }

-	/// Get function's cached test result
-	pub fn get_test_result(&self) -> &Option<String> { &self.test_result }
+    /// Get function's cached test result
+    pub fn get_test_result(&self) -> &Option<String> {
+        &self.test_result
+    }

-	/// Update function string and test it
-	pub fn update_string(&mut self, raw_func_str: &str) {
-		if raw_func_str == self.raw_func_str {
-			return;
-		}
+    /// Update function string and test it
+    pub fn update_string(&mut self, raw_func_str: &str) {
+        if raw_func_str == self.raw_func_str {
+            return;
+        }

-		self.raw_func_str = raw_func_str.to_owned();
-		let processed_func = process_func_str(raw_func_str);
-		let new_func_result = BackingFunction::new(&processed_func);
+        self.raw_func_str = raw_func_str.to_owned();
+        let processed_func = process_func_str(raw_func_str);
+        let new_func_result = BackingFunction::new(&processed_func);

-		match new_func_result {
-			Ok(new_function) => {
-				self.test_result = None;
-				self.function = new_function;
-				self.invalidate_whole();
-			}
-			Err(error) => {
-				self.test_result = Some(error);
-			}
-		}
-	}
+        match new_func_result {
+            Ok(new_function) => {
+                self.test_result = None;
+                self.function = new_function;
+                self.invalidate_whole();
+            }
+            Err(error) => {
+                self.test_result = Some(error);
+            }
+        }
+    }

-	/// Creates and does the math for creating all the rectangles under the graph
-	fn integral_rectangles(
-		&mut self, integral_min_x: f64, integral_max_x: f64, sum: Riemann, integral_num: usize,
-	) -> (Vec<(f64, f64)>, f64) {
-		let step = (integral_max_x - integral_min_x) / (integral_num as f64);
+    /// Creates and does the math for creating all the rectangles under the graph
+    fn integral_rectangles(
+        &mut self,
+        integral_min_x: f64,
+        integral_max_x: f64,
+        sum: Riemann,
+        integral_num: usize,
+    ) -> (Vec<(f64, f64)>, f64) {
+        let step = (integral_max_x - integral_min_x) / (integral_num as f64);

-		// let sum_func = self.get_sum_func(sum);
+        // let sum_func = self.get_sum_func(sum);

-		let data2: Vec<(f64, f64)> = step_helper(integral_num, integral_min_x, step)
-			.into_iter()
-			.map(|x| {
-				let step_offset = step.copysign(x); // store the offset here so it doesn't have to be calculated multiple times
-				let x2: f64 = x + step_offset;
+        let data2: Vec<(f64, f64)> = step_helper(integral_num, integral_min_x, step)
+            .into_iter()
+            .map(|x| {
+                let step_offset = step.copysign(x); // store the offset here so it doesn't have to be calculated multiple times
+                let x2: f64 = x + step_offset;

-				let (left_x, right_x) = match x.is_sign_positive() {
-					true => (x, x2),
-					false => (x2, x),
-				};
+                let (left_x, right_x) = match x.is_sign_positive() {
+                    true => (x, x2),
+                    false => (x2, x),
+                };

-				let y = match sum {
-					Riemann::Left => self.function.get(0, left_x),
-					Riemann::Right => self.function.get(0, right_x),
-					Riemann::Middle => {
-						(self.function.get(0, left_x) + self.function.get(0, right_x)) / 2.0
-					}
-				};
+                let y = match sum {
+                    Riemann::Left => self.function.get(0, left_x),
+                    Riemann::Right => self.function.get(0, right_x),
+                    Riemann::Middle => {
+                        (self.function.get(0, left_x) + self.function.get(0, right_x)) / 2.0
+                    }
+                };

-				(x + (step_offset / 2.0), y)
-			})
-			.filter(|(_, y)| y.is_finite())
-			.collect();
+                (x + (step_offset / 2.0), y)
+            })
+            .filter(|(_, y)| y.is_finite())
+            .collect();

-		let area = data2.iter().map(move |(_, y)| y * step).sum();
+        let area = data2.iter().map(move |(_, y)| y * step).sum();

-		(data2, area)
-	}
+        (data2, area)
+    }

-	/// Helps with processing newton's method depending on level of derivative
-	fn newtons_method_helper(
-		&mut self, threshold: f64, derivative_level: usize, range: &std::ops::Range<f64>,
-	) -> Vec<PlotPoint> {
-		self.function.generate_derivative(derivative_level);
-		self.function.generate_derivative(derivative_level + 1);
-		let newtons_method_output: Vec<f64> = match derivative_level {
-			0 => newtons_method_helper(
-				threshold,
-				range,
-				self.back_data.as_slice(),
-				&self.function.get_function_derivative(0),
-				&self.function.get_function_derivative(1),
-			),
-			1 => newtons_method_helper(
-				threshold,
-				range,
-				self.derivative_data.as_slice(),
-				&self.function.get_function_derivative(1),
-				&self.function.get_function_derivative(2),
-			),
-			_ => unreachable!(),
-		};
+    /// Helps with processing newton's method depending on level of derivative
+    fn newtons_method_helper(
+        &mut self,
+        threshold: f64,
+        derivative_level: usize,
+        range: &std::ops::Range<f64>,
+    ) -> Vec<PlotPoint> {
+        self.function.generate_derivative(derivative_level);
+        self.function.generate_derivative(derivative_level + 1);
+        let newtons_method_output: Vec<f64> = match derivative_level {
+            0 => newtons_method_helper(
+                threshold,
+                range,
+                self.back_data.as_slice(),
+                self.function.get_function_derivative(0),
+                self.function.get_function_derivative(1),
+            ),
+            1 => newtons_method_helper(
+                threshold,
+                range,
+                self.derivative_data.as_slice(),
+                self.function.get_function_derivative(1),
+                self.function.get_function_derivative(2),
+            ),
+            _ => unreachable!(),
+        };

-		newtons_method_output
-			.into_iter()
-			.map(|x| PlotPoint::new(x, self.function.get(0, x)))
-			.collect()
-	}
+        newtons_method_output
+            .into_iter()
+            .map(|x| PlotPoint::new(x, self.function.get(0, x)))
+            .collect()
+    }

-	/// Does the calculations and stores results in `self`
-	pub fn calculate(
-		&mut self, width_changed: bool, min_max_changed: bool, did_zoom: bool,
-		settings: AppSettings,
-	) {
-		if self.test_result.is_some() | self.function.is_none() {
-			return;
-		}
+    /// Does the calculations and stores results in `self`
+    pub fn calculate(
+        &mut self,
+        width_changed: bool,
+        min_max_changed: bool,
+        did_zoom: bool,
+        settings: AppSettings,
+    ) {
+        if self.test_result.is_some() | self.function.is_none() {
+            return;
+        }

-		let resolution = (settings.max_x - settings.min_x) / (settings.plot_width as f64);
-		debug_assert!(resolution > 0.0);
-		let resolution_iter = step_helper(settings.plot_width + 1, settings.min_x, resolution);
+        let resolution = (settings.max_x - settings.min_x) / (settings.plot_width as f64);
+        debug_assert!(resolution > 0.0);
+        let resolution_iter = step_helper(settings.plot_width + 1, settings.min_x, resolution);

-		unsafe { assume(!resolution_iter.is_empty()) }
+        // Makes sure proper arguments are passed when integral is enabled
+        if self.integral && settings.integral_changed {
+            self.clear_integral();
+        }

-		// Makes sure proper arguments are passed when integral is enabled
-		if self.integral && settings.integral_changed {
-			self.clear_integral();
-		}
+        if width_changed | min_max_changed | did_zoom {
+            self.clear_back();
+            self.clear_derivative();
+            self.clear_nth();
+        }

-		if width_changed | min_max_changed | did_zoom {
-			self.clear_back();
-			self.clear_derivative();
-			self.clear_nth();
-		}
+        if self.back_data.is_empty() {
+            let data: Vec<PlotPoint> = resolution_iter
+                .clone()
+                .into_iter()
+                .map(|x| PlotPoint::new(x, self.function.get(0, x)))
+                .collect();
+            debug_assert_eq!(data.len(), settings.plot_width + 1);

-		if self.back_data.is_empty() {
-			let data: Vec<PlotPoint> = resolution_iter
-				.clone()
-				.into_iter()
-				.map(|x| PlotPoint::new(x, self.function.get(0, x)))
-				.collect();
-			debug_assert_eq!(data.len(), settings.plot_width + 1);
+            self.back_data = data;
+        }

-			self.back_data = data;
-		}
+        if self.derivative_data.is_empty() {
+            self.function.generate_derivative(1);
+            let data: Vec<PlotPoint> = resolution_iter
+                .clone()
+                .into_iter()
+                .map(|x| PlotPoint::new(x, self.function.get(1, x)))
+                .collect();
+            debug_assert_eq!(data.len(), settings.plot_width + 1);
+            self.derivative_data = data;
+        }

-		if self.derivative_data.is_empty() {
-			self.function.generate_derivative(1);
-			let data: Vec<PlotPoint> = resolution_iter
-				.clone()
-				.into_iter()
-				.map(|x| PlotPoint::new(x, self.function.get(1, x)))
-				.collect();
-			debug_assert_eq!(data.len(), settings.plot_width + 1);
-			self.derivative_data = data;
-		}
+        if self.nth_derviative && self.nth_derivative_data.is_none() {
+            let data: Vec<PlotPoint> = resolution_iter
+                .into_iter()
+                .map(|x| PlotPoint::new(x, self.function.get(self.curr_nth, x)))
+                .collect();
+            debug_assert_eq!(data.len(), settings.plot_width + 1);
+            self.nth_derivative_data = Some(data);
+        }

-		if self.nth_derviative && self.nth_derivative_data.is_none() {
-			let data: Vec<PlotPoint> = resolution_iter
-				.into_iter()
-				.map(|x| PlotPoint::new(x, self.function.get(self.curr_nth, x)))
-				.collect();
-			debug_assert_eq!(data.len(), settings.plot_width + 1);
-			self.nth_derivative_data = Some(data);
-		}
+        if self.integral {
+            if self.integral_data.is_none() {
+                let (data, area) = self.integral_rectangles(
+                    settings.integral_min_x,
+                    settings.integral_max_x,
+                    settings.riemann_sum,
+                    settings.integral_num,
+                );

-		if self.integral {
-			if self.integral_data.is_none() {
-				let (data, area) = self.integral_rectangles(
-					settings.integral_min_x,
-					settings.integral_max_x,
-					settings.riemann_sum,
-					settings.integral_num,
-				);
+                self.integral_data = Some((
+                    data.into_iter().map(|(x, y)| Bar::new(x, y)).collect(),
+                    area,
+                ));
+            }
+        } else {
+            self.clear_integral();
+        }

-				self.integral_data = Some((
-					data.into_iter().map(|(x, y)| Bar::new(x, y)).collect(),
-					area,
-				));
-			}
-		} else {
-			self.clear_integral();
-		}
+        let threshold: f64 = resolution / 2.0;
+        let x_range = settings.min_x..settings.max_x;

-		let threshold: f64 = resolution / 2.0;
-		let x_range = settings.min_x..settings.max_x;
+        // Calculates extrema
+        if settings.do_extrema && (min_max_changed | self.extrema_data.is_empty()) {
+            self.extrema_data = self.newtons_method_helper(threshold, 1, &x_range);
+        }

-		// Calculates extrema
-		if settings.do_extrema && (min_max_changed | self.extrema_data.is_empty()) {
-			self.extrema_data = self.newtons_method_helper(threshold, 1, &x_range);
-		}
+        // Calculates roots
+        if settings.do_roots && (min_max_changed | self.root_data.is_empty()) {
+            self.root_data = self.newtons_method_helper(threshold, 0, &x_range);
+        }
+    }

-		// Calculates roots
-		if settings.do_roots && (min_max_changed | self.root_data.is_empty()) {
-			self.root_data = self.newtons_method_helper(threshold, 0, &x_range);
-		}
-	}
+    /// Displays the function's output on PlotUI `plot_ui` with settings `settings`.
+    /// Returns an `Option<f64>` of the calculated integral.
+    pub fn display(
+        &self,
+        plot_ui: &mut PlotUi,
+        settings: &AppSettings,
+        main_plot_color: Color32,
+    ) -> Option<f64> {
+        if self.test_result.is_some() | self.function.is_none() | !self.visible {
+            return None;
+        }

-	/// Displays the function's output on PlotUI `plot_ui` with settings `settings`.
-	/// Returns an `Option<f64>` of the calculated integral.
-	pub fn display(
-		&self, plot_ui: &mut PlotUi, settings: &AppSettings, main_plot_color: Color32,
-	) -> Option<f64> {
-		if self.test_result.is_some() | self.function.is_none() {
-			return None;
-		}
+        let integral_step =
+            (settings.integral_max_x - settings.integral_min_x) / (settings.integral_num as f64);
+        debug_assert!(integral_step > 0.0);

-		let integral_step =
-			(settings.integral_max_x - settings.integral_min_x) / (settings.integral_num as f64);
-		debug_assert!(integral_step > 0.0);
+        let step = (settings.max_x - settings.min_x) / (settings.plot_width as f64);
+        debug_assert!(step > 0.0);

-		let step = (settings.max_x - settings.min_x) / (settings.plot_width as f64);
-		debug_assert!(step > 0.0);
+        // Plot back data
+        if !self.back_data.is_empty() {
+            if self.integral && (step >= integral_step) {
+                plot_ui.line(
+                    self.back_data
+                        .iter()
+                        .filter(|value| {
+                            (value.x > settings.integral_min_x)
+                                && (settings.integral_max_x > value.x)
+                        })
+                        .cloned()
+                        .collect::<Vec<PlotPoint>>()
+                        .to_line()
+                        .stroke((0.0, Color32::TRANSPARENT))
+                        .color(Color32::from_rgb(4, 4, 255))
+                        .fill(0.0),
+                );
+            }
+            plot_ui.line(
+                self.back_data
+                    .clone()
+                    .to_line()
+                    .stroke((4.0, main_plot_color)),
+            );
+        }

-		// Plot back data
-		if !self.back_data.is_empty() {
-			if self.integral && (step >= integral_step) {
-				plot_ui.line(
-					self.back_data
-						.iter()
-						.filter(|value| {
-							(value.x > settings.integral_min_x)
-								&& (settings.integral_max_x > value.x)
-						})
-						.cloned()
-						.collect::<Vec<PlotPoint>>()
-						.to_line()
-						.stroke(epaint::Stroke::NONE)
-						.color(Color32::from_rgb(4, 4, 255))
-						.fill(0.0),
-				);
-			}
-			plot_ui.line(
-				self.back_data
-					.clone()
-					.to_line()
-					.stroke(egui::Stroke::new(4.0, main_plot_color)),
-			);
-		}
+        // Plot derivative data
+        if self.derivative && !self.derivative_data.is_empty() {
+            plot_ui.line(self.derivative_data.clone().to_line().color(Color32::GREEN));
+        }

-		// Plot derivative data
-		if self.derivative && !self.derivative_data.is_empty() {
-			plot_ui.line(self.derivative_data.clone().to_line().color(Color32::GREEN));
-		}
+        // Plot extrema points
+        if settings.do_extrema && !self.extrema_data.is_empty() {
+            plot_ui.points(
+                self.extrema_data
+                    .clone()
+                    .to_points()
+                    .color(Color32::YELLOW)
+                    .radius(5.0), // Radius of points of Extrema
+            );
+        }

-		// Plot extrema points
-		if settings.do_extrema && !self.extrema_data.is_empty() {
-			plot_ui.points(
-				self.extrema_data
-					.clone()
-					.to_points()
-					.color(Color32::YELLOW)
-					.radius(5.0), // Radius of points of Extrema
-			);
-		}
+        // Plot roots points
+        if settings.do_roots && !self.root_data.is_empty() {
+            plot_ui.points(
+                self.root_data
+                    .clone()
+                    .to_points()
+                    .color(Color32::LIGHT_BLUE)
+                    .radius(5.0), // Radius of points of Roots
+            );
+        }

-		// Plot roots points
-		if settings.do_roots && !self.root_data.is_empty() {
-			plot_ui.points(
-				self.root_data
-					.clone()
-					.to_points()
-					.color(Color32::LIGHT_BLUE)
-					.radius(5.0), // Radius of points of Roots
-			);
-		}
+        if self.nth_derviative
+            && let Some(ref nth_derviative) = self.nth_derivative_data
+        {
+            plot_ui.line(nth_derviative.clone().to_line().color(Color32::DARK_RED));
+        }

-		if self.nth_derviative
-			&& let Some(ref nth_derviative) = self.nth_derivative_data
-		{
-			plot_ui.line(nth_derviative.clone().to_line().color(Color32::DARK_RED));
-		}
+        // Plot integral data
+        match &self.integral_data {
+            Some(integral_data) => {
+                if integral_step > step {
+                    plot_ui.bar_chart(
+                        BarChart::new("integral", integral_data.0.clone())
+                            .color(Color32::BLUE)
+                            .width(integral_step),
+                    );
+                }

-		// Plot integral data
-		match &self.integral_data {
-			Some(integral_data) => {
-				if integral_step > step {
-					plot_ui.bar_chart(
-						BarChart::new(integral_data.0.clone())
-							.color(Color32::BLUE)
-							.width(integral_step),
-					);
-				}
+                // return value rounded to 8 decimal places
+                Some(emath::round_to_decimals(integral_data.1, 8))
+            }
+            None => None,
+        }
+    }

-				// return value rounded to 8 decimal places
-				Some(emath::round_to_decimals(integral_data.1, 8))
-			}
-			None => None,
-		}
-	}
+    /// Invalidate entire cache
+    fn invalidate_whole(&mut self) {
+        self.clear_back();
+        self.clear_integral();
+        self.clear_derivative();
+        self.clear_nth();
+        self.clear_extrema();
+        self.clear_roots();
+    }

-	/// Invalidate entire cache
-	fn invalidate_whole(&mut self) {
-		self.clear_back();
-		self.clear_integral();
-		self.clear_derivative();
-		self.clear_nth();
-		self.clear_extrema();
-		self.clear_roots();
-	}
+    /// Invalidate `back` data
+    #[inline]
+    fn clear_back(&mut self) {
+        self.back_data.clear();
+    }

-	/// Invalidate `back` data
-	#[inline]
-	fn clear_back(&mut self) { self.back_data.clear(); }
+    /// Invalidate Integral data
+    #[inline]
+    fn clear_integral(&mut self) {
+        self.integral_data = None;
+    }

-	/// Invalidate Integral data
-	#[inline]
-	fn clear_integral(&mut self) { self.integral_data = None; }
+    /// Invalidate Derivative data
+    #[inline]
+    fn clear_derivative(&mut self) {
+        self.derivative_data.clear();
+    }

-	/// Invalidate Derivative data
-	#[inline]
-	fn clear_derivative(&mut self) { self.derivative_data.clear(); }
+    /// Invalidates `n`th derivative data
+    #[inline]
+    fn clear_nth(&mut self) {
+        self.nth_derivative_data = None
+    }

-	/// Invalidates `n`th derivative data
-	#[inline]
-	fn clear_nth(&mut self) { self.nth_derivative_data = None }
+    /// Invalidate extrema data
+    #[inline]
+    fn clear_extrema(&mut self) {
+        self.extrema_data.clear()
+    }

-	/// Invalidate extrema data
-	#[inline]
-	fn clear_extrema(&mut self) { self.extrema_data.clear() }
-
-	/// Invalidate root data
-	#[inline]
-	fn clear_roots(&mut self) { self.root_data.clear() }
+    /// Invalidate root data
+    #[inline]
+    fn clear_roots(&mut self) {
+        self.root_data.clear()
+    }
 }
--- a/src/function_manager.rs
+++ b/src/function_manager.rs
@ -1,10 +1,10 @@
 use crate::{
-	consts::COLORS,
-	function_entry::FunctionEntry,
-	misc::{create_id, get_u64_id, random_u64},
-	widgets::widgets_ontop,
+    consts::COLORS,
+    function_entry::FunctionEntry,
+    misc::{create_id, get_u64_id, random_u64},
+    widgets::widgets_ontop,
 };
-use egui::{Button, Id, Key, Modifiers, TextEdit, WidgetText};
+use egui::{Button, Id, Key, Modifiers, Popup, TextEdit, WidgetText};
 use emath::vec2;
 use parsing::Movement;
 use serde::ser::SerializeStruct;
@ -15,267 +15,350 @@ use std::ops::BitXorAssign;

 type Functions = Vec<(Id, FunctionEntry)>;
 pub struct FunctionManager {
-	functions: Functions,
+    functions: Functions,
 }

 impl Default for FunctionManager {
-	fn default() -> Self {
-		let mut vec: Functions = Vec::with_capacity(COLORS.len());
-		vec.push((
-			create_id(11414819524356497634), // Random number here to avoid call to crate::misc::random_u64()
-			FunctionEntry::default(),
-		));
-		Self { functions: vec }
-	}
+    fn default() -> Self {
+        let mut vec: Functions = Vec::with_capacity(COLORS.len());
+        vec.push((
+            create_id(11414819524356497634), // Random number here to avoid call to crate::misc::random_u64()
+            FunctionEntry::default(),
+        ));
+        Self { functions: vec }
+    }
 }

 impl Serialize for FunctionManager {
-	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-	where
-		S: Serializer,
-	{
-		let mut s = serializer.serialize_struct("FunctionManager", 1)?;
-		s.serialize_field(
-			"data",
-			&self
-				.functions
-				.iter()
-				.map(|(id, func)| (get_u64_id(*id), func.clone()))
-				.collect::<Vec<(u64, FunctionEntry)>>(),
-		)?;
-		s.end()
-	}
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut s = serializer.serialize_struct("FunctionManager", 1)?;
+        s.serialize_field(
+            "data",
+            &self
+                .functions
+                .iter()
+                .map(|(id, func)| (get_u64_id(*id), func.clone()))
+                .collect::<Vec<(u64, FunctionEntry)>>(),
+        )?;
+        s.end()
+    }
 }

 impl<'de> Deserialize<'de> for FunctionManager {
-	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-	where
-		D: Deserializer<'de>,
-	{
-		#[derive(Deserialize)]
-		struct Helper(Vec<(u64, FunctionEntry)>);
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        #[derive(Deserialize)]
+        struct Helper(Vec<(u64, FunctionEntry)>);

-		let helper = Helper::deserialize(deserializer)?;
+        let helper = Helper::deserialize(deserializer)?;

-		Ok(FunctionManager {
-			functions: helper
-				.0
-				.iter()
-				.cloned()
-				.map(|(id, func)| (create_id(id), func))
-				.collect::<Vec<(Id, FunctionEntry)>>(),
-		})
-	}
+        Ok(FunctionManager {
+            functions: helper
+                .0
+                .iter()
+                .cloned()
+                .map(|(id, func)| (create_id(id), func))
+                .collect::<Vec<(Id, FunctionEntry)>>(),
+        })
+    }
 }

 /// Function that creates button that's used with the `button_area`
 fn button_area_button<'a>(text: impl Into<WidgetText>) -> Button<'a> {
-	Button::new(text).frame(false)
+    Button::new(text).frame(false)
 }

 impl FunctionManager {
-	#[inline]
-	fn get_hash(&self) -> u64 {
-		let mut hasher = DefaultHasher::new();
-		self.functions.hash(&mut hasher);
-		hasher.finish()
-	}
+    #[inline]
+    fn get_hash(&self) -> u64 {
+        let mut hasher = DefaultHasher::new();
+        self.functions.hash(&mut hasher);
+        hasher.finish()
+    }

-	/// Displays function entries alongside returning whether or not functions have been modified
-	pub fn display_entries(&mut self, ui: &mut egui::Ui) -> bool {
-		let initial_hash = self.get_hash();
+    /// Displays function entries alongside returning whether or not functions have been modified
+    pub fn display_entries(&mut self, ui: &mut egui::Ui) -> bool {
+        let initial_hash = self.get_hash();

-		let can_remove = self.functions.len() > 1;
+        let can_remove = self.functions.len() > 1;
+        let can_add = self.functions.len() < COLORS.len();
+        let num_functions = self.functions.len();

-		let available_width = ui.available_width();
-		let mut remove_i: Option<usize> = None;
-		let target_size = vec2(available_width, crate::consts::FONT_SIZE);
-		for (i, (te_id, function)) in self.functions.iter_mut().map(|(a, b)| (*a, b)).enumerate() {
-			let mut new_string = function.autocomplete.string.clone();
-			function.update_string(&new_string);
+        let available_width = ui.available_width();
+        let mut remove_i: Option<usize> = None;
+        let mut clone_i: Option<usize> = None;
+        let mut move_up_i: Option<usize> = None;
+        let mut move_down_i: Option<usize> = None;
+        let target_size = vec2(available_width, crate::consts::FONT_SIZE);
+        for (i, (te_id, function)) in self.functions.iter_mut().map(|(a, b)| (*a, b)).enumerate() {
+            let mut new_string = function.autocomplete.string.clone();
+            function.update_string(&new_string);

-			let mut movement: Movement = Movement::default();
+            let mut movement: Movement = Movement::default();

-			let size_multiplier = vec2(1.0, {
-				let had_focus = ui.memory(|x| x.has_focus(te_id));
-				(ui.ctx().animate_bool(te_id, had_focus) * 1.5) + 1.0
-			});
+            let size_multiplier = vec2(1.0, {
+                let had_focus = ui.memory(|x| x.has_focus(te_id));
+                (ui.ctx().animate_bool(te_id, had_focus) * 1.5) + 1.0
+            });

-			let re = ui.add_sized(
-				target_size * size_multiplier,
-				egui::TextEdit::singleline(&mut new_string)
-					.hint_forward(true) // Make the hint appear after the last text in the textbox
-					.lock_focus(true)
-					.id(te_id) // Set widget's id to `te_id`
-					.hint_text(
-						// If there's a single hint, go ahead and apply the hint here, if not, set the hint to an empty string
-						function.autocomplete.hint.single().unwrap_or(""),
-					),
-			);
+            let re = ui.add_sized(
+                target_size * size_multiplier,
+                egui::TextEdit::singleline(&mut new_string)
+                    .hint_forward(true) // Make the hint appear after the last text in the textbox
+                    .lock_focus(true)
+                    .id(te_id) // Set widget's id to `te_id`
+                    .hint_text(
+                        // If there's a single hint, go ahead and apply the hint here, if not, set the hint to an empty string
+                        function.autocomplete.hint.single().unwrap_or(""),
+                    ),
+            );

-			// Only keep valid chars
-			new_string.retain(crate::misc::is_valid_char);
+            // Only keep valid chars
+            new_string.retain(crate::misc::is_valid_char);

-			// If not fully open, return here as buttons cannot yet be displayed, therefore the user is inable to mark it for deletion
-			let animate_bool = ui.ctx().animate_bool(te_id, re.has_focus());
-			if animate_bool == 1.0 {
-				function.autocomplete.update_string(&new_string);
+            // Display error indicator with tooltip if there's a parsing error
+            if let Some(error) = function.get_test_result() {
+                ui.horizontal(|ui| {
+                    ui.label(egui::RichText::new("⚠").color(egui::Color32::YELLOW))
+                        .on_hover_text(error);
+                    ui.label(
+                        egui::RichText::new(error)
+                            .color(egui::Color32::LIGHT_RED)
+                            .small(),
+                    );
+                });
+            }

-				if function.autocomplete.hint.is_some() {
-					// only register up and down arrow movements if hint is type `Hint::Many`
-					if !function.autocomplete.hint.is_single() {
-						let (arrow_down, arrow_up) = ui.input(|x| {
-							(x.key_pressed(Key::ArrowDown), x.key_pressed(Key::ArrowUp))
-						});
-						if arrow_down {
-							movement = Movement::Down;
-						} else if arrow_up {
-							movement = Movement::Up;
-						}
-					}
+            // If not fully open, return here as buttons cannot yet be displayed, therefore the user is inable to mark it for deletion
+            let animate_bool = ui.ctx().animate_bool(te_id, re.has_focus());
+            if animate_bool == 1.0 {
+                function.autocomplete.update_string(&new_string);

-					// Put here so these key presses don't interact with other elements
-					let movement_complete_action = ui.input_mut(|x| {
-						x.consume_key(Modifiers::NONE, Key::Enter)
-							| x.consume_key(Modifiers::NONE, Key::Tab)
-							| x.key_pressed(Key::ArrowRight)
-					});
+                if function.autocomplete.hint.is_some() {
+                    // only register up and down arrow movements if hint is type `Hint::Many`
+                    if !function.autocomplete.hint.is_single() {
+                        let (arrow_down, arrow_up) = ui.input(|x| {
+                            (x.key_pressed(Key::ArrowDown), x.key_pressed(Key::ArrowUp))
+                        });
+                        if arrow_down {
+                            movement = Movement::Down;
+                        } else if arrow_up {
+                            movement = Movement::Up;
+                        }
+                    }

-					if movement_complete_action {
-						movement = Movement::Complete;
-					}
+                    // Put here so these key presses don't interact with other elements
+                    let movement_complete_action = ui.input_mut(|x| {
+                        x.consume_key(Modifiers::NONE, Key::Enter)
+                            | x.consume_key(Modifiers::NONE, Key::Tab)
+                            | x.key_pressed(Key::ArrowRight)
+                    });

-					// Register movement and apply proper changes
-					function.autocomplete.register_movement(&movement);
+                    if movement_complete_action {
+                        movement = Movement::Complete;
+                    }

-					if movement != Movement::Complete
-						&& let Some(hints) = function.autocomplete.hint.many()
-					{
-						// Doesn't need to have a number in id as there should only be 1 autocomplete popup in the entire gui
+                    // Register movement and apply proper changes
+                    function.autocomplete.register_movement(&movement);

-						// hashed "autocomplete_popup"
-						const POPUP_ID: Id = create_id(7574801616484505465);
+                    if movement != Movement::Complete
+                        && let Some(hints) = function.autocomplete.hint.many()
+                    {
+                        let mut clicked = false;
+                        let selected_i = function.autocomplete.i;

-						let mut clicked = false;
+                        if let Some(popup_response) = Popup::menu(&re).show(|ui| {
+                            hints.iter().enumerate().for_each(|(i, candidate)| {
+                                if ui.selectable_label(i == selected_i, *candidate).clicked() {
+                                    clicked = true;
+                                    function.autocomplete.i = i;
+                                }
+                            });
+                        }) && clicked
+                        {
+                            function
+                                .autocomplete
+                                .apply_hint(hints[function.autocomplete.i]);
+                            movement = Movement::Complete;
+                        }
+                    }

-						egui::popup_below_widget(ui, POPUP_ID, &re, |ui| {
-							hints.iter().enumerate().for_each(|(i, candidate)| {
-								if ui
-									.selectable_label(i == function.autocomplete.i, *candidate)
-									.clicked()
-								{
-									clicked = true;
-									function.autocomplete.i = i;
-								}
-							});
-						});
+                    // Push cursor to end if needed
+                    if movement == Movement::Complete
+                        && let Some(mut state) = TextEdit::load_state(ui.ctx(), te_id)
+                    {
+                        let ccursor = egui::text::CCursor::new(function.autocomplete.string.len());
+                        state
+                            .cursor
+                            .set_char_range(Some(egui::text::CCursorRange::one(ccursor)));
+                        TextEdit::store_state(ui.ctx(), te_id, state);
+                    }
+                }

-						if clicked {
-							function
-								.autocomplete
-								.apply_hint(hints[function.autocomplete.i]);
+                /// The y offset multiplier of the `buttons_area` area
+                const BUTTONS_Y_OFFSET: f32 = 1.32;
+                const Y_OFFSET: f32 = crate::consts::FONT_SIZE * BUTTONS_Y_OFFSET;

-							// Don't need this here as it simply won't be display next frame
-							// ui.memory_mut().close_popup();
+                widgets_ontop(ui, create_id(i as u64), &re, Y_OFFSET, |ui| {
+                    ui.horizontal(|ui| {
+                        // There's more than 1 function! Functions can now be deleted
+                        if ui
+                            .add_enabled(can_remove, button_area_button("✖"))
+                            .on_hover_text("Delete Function")
+                            .clicked()
+                        {
+                            remove_i = Some(i);
+                        }

-							movement = Movement::Complete;
-						} else {
-							ui.memory_mut(|x| x.open_popup(POPUP_ID));
-						}
-					}
+                        // Toggle visibility
+                        function.visible.bitxor_assign(
+                            ui.add(button_area_button(if function.visible {
+                                "👁"
+                            } else {
+                                "○"
+                            }))
+                            .on_hover_text(match function.visible {
+                                true => "Hide Function",
+                                false => "Show Function",
+                            })
+                            .clicked(),
+                        );

-					// Push cursor to end if needed
-					if movement == Movement::Complete {
-						let mut state =
-							unsafe { TextEdit::load_state(ui.ctx(), te_id).unwrap_unchecked() };
-						let ccursor = egui::text::CCursor::new(function.autocomplete.string.len());
-						state.set_ccursor_range(Some(egui::text::CCursorRange::one(ccursor)));
-						TextEdit::store_state(ui.ctx(), te_id, state);
-					}
-				}
+                        // Clone function
+                        if ui
+                            .add_enabled(can_add, button_area_button("⎘"))
+                            .on_hover_text("Clone Function")
+                            .clicked()
+                        {
+                            clone_i = Some(i);
+                        }

-				/// The y offset multiplier of the `buttons_area` area
-				const BUTTONS_Y_OFFSET: f32 = 1.32;
-				const Y_OFFSET: f32 = crate::consts::FONT_SIZE * BUTTONS_Y_OFFSET;
+                        // Move up (only if not first)
+                        if ui
+                            .add_enabled(i > 0, button_area_button("⬆"))
+                            .on_hover_text("Move Up")
+                            .clicked()
+                        {
+                            move_up_i = Some(i);
+                        }

-				widgets_ontop(ui, create_id(i as u64), &re, Y_OFFSET, |ui| {
-					ui.horizontal(|ui| {
-						// There's more than 1 function! Functions can now be deleted
-						if ui
-							.add_enabled(can_remove, button_area_button("✖"))
-							.on_hover_text("Delete Function")
-							.clicked()
-						{
-							remove_i = Some(i);
-						}
+                        // Move down (only if not last)
+                        if ui
+                            .add_enabled(i < num_functions - 1, button_area_button("⬇"))
+                            .on_hover_text("Move Down")
+                            .clicked()
+                        {
+                            move_down_i = Some(i);
+                        }

-						ui.add_enabled_ui(function.is_some(), |ui| {
-							// Toggle integral being enabled or not
-							function.integral.bitxor_assign(
-								ui.add(button_area_button("∫"))
-									.on_hover_text(match function.integral {
-										true => "Don't integrate",
-										false => "Integrate",
-									})
-									.clicked(),
-							);
+                        ui.add_enabled_ui(function.is_some(), |ui| {
+                            // Toggle integral being enabled or not
+                            function.integral.bitxor_assign(
+                                ui.add(button_area_button("∫"))
+                                    .on_hover_text(match function.integral {
+                                        true => "Don't integrate",
+                                        false => "Integrate",
+                                    })
+                                    .clicked(),
+                            );

-							// Toggle showing the derivative (even though it's already calculated this option just toggles if it's displayed or not)
-							function.derivative.bitxor_assign(
-								ui.add(button_area_button("d/dx"))
-									.on_hover_text(match function.derivative {
-										true => "Don't Differentiate",
-										false => "Differentiate",
-									})
-									.clicked(),
-							);
+                            // Toggle showing the derivative (even though it's already calculated this option just toggles if it's displayed or not)
+                            function.derivative.bitxor_assign(
+                                ui.add(button_area_button("d/dx"))
+                                    .on_hover_text(match function.derivative {
+                                        true => "Don't Differentiate",
+                                        false => "Differentiate",
+                                    })
+                                    .clicked(),
+                            );

-							// Toggle showing the settings window
-							function.settings_opened.bitxor_assign(
-								ui.add(button_area_button("⚙"))
-									.on_hover_text(match function.settings_opened {
-										true => "Close Settings",
-										false => "Open Settings",
-									})
-									.clicked(),
-							);
-						});
-					});
-				});
-			}
+                            // Toggle showing the settings window
+                            function.settings_opened.bitxor_assign(
+                                ui.add(button_area_button("⚙"))
+                                    .on_hover_text(match function.settings_opened {
+                                        true => "Close Settings",
+                                        false => "Open Settings",
+                                    })
+                                    .clicked(),
+                            );
+                        });
+                    });
+                });
+            }

-			function.settings_window(ui.ctx());
-		}
+            function.settings_window(ui.ctx());
+        }

-		// Remove function if the user requests it
-		if let Some(remove_i_unwrap) = remove_i {
-			self.functions.remove(remove_i_unwrap);
-		}
+        // Remove function if the user requests it
+        if let Some(remove_i_unwrap) = remove_i {
+            self.functions.remove(remove_i_unwrap);
+        }

-		let final_hash = self.get_hash();
+        // Clone function if the user requests it
+        if let Some(clone_i_unwrap) = clone_i {
+            let cloned = self.functions[clone_i_unwrap].1.clone();
+            self.push_cloned(cloned);
+        }

-		initial_hash != final_hash
-	}
+        // Move function up if the user requests it
+        if let Some(i) = move_up_i
+            && i > 0
+        {
+            self.functions.swap(i, i - 1);
+        }

-	/// Create and push new empty function entry
-	pub fn push_empty(&mut self) {
-		self.functions.push((
-			create_id(random_u64().expect("unable to generate random id")),
-			FunctionEntry::default(),
-		));
-	}
+        // Move function down if the user requests it
+        if let Some(i) = move_down_i
+            && i < self.functions.len() - 1
+        {
+            self.functions.swap(i, i + 1);
+        }

-	/// Detect if any functions are using integrals
-	pub fn any_using_integral(&self) -> bool {
-		self.functions.iter().any(|(_, func)| func.integral)
-	}
+        let final_hash = self.get_hash();

-	#[inline]
-	pub fn len(&self) -> usize { self.functions.len() }
+        initial_hash != final_hash
+    }

-	#[inline]
-	pub fn get_entries_mut(&mut self) -> &mut Functions { &mut self.functions }
+    /// Create and push new empty function entry
+    pub fn push_empty(&mut self) {
+        self.functions.push((
+            create_id(random_u64().expect("unable to generate random id")),
+            FunctionEntry::default(),
+        ));
+    }

-	#[inline]
-	pub fn get_entries(&self) -> &Functions { &self.functions }
+    /// Push a cloned function entry
+    pub fn push_cloned(&mut self, mut entry: FunctionEntry) {
+        // Reset settings_opened so the cloned function doesn't have settings open
+        entry.settings_opened = false;
+        self.functions.push((
+            create_id(random_u64().expect("unable to generate random id")),
+            entry,
+        ));
+    }
+
+    /// Detect if any functions are using integrals
+    pub fn any_using_integral(&self) -> bool {
+        self.functions.iter().any(|(_, func)| func.integral)
+    }
+
+    #[inline]
+    pub fn len(&self) -> usize {
+        self.functions.len()
+    }
+
+    #[inline]
+    pub fn get_entries_mut(&mut self) -> &mut Functions {
+        &mut self.functions
+    }
+
+    #[inline]
+    pub fn get_entries(&self) -> &Functions {
+        &self.functions
+    }
 }
--- a/src/lib.rs
+++ b/src/lib.rs
@ -1,15 +1,3 @@
-#![feature(const_mut_refs)]
-#![feature(let_chains)]
-#![feature(const_trait_impl)]
-#![feature(core_intrinsics)]
-#![feature(const_fn_floating_point_arithmetic)]
-#![feature(const_assume)]
-#![feature(const_option_ext)]
-#![feature(const_slice_index)]
-#![feature(slice_split_at_unchecked)]
-#![feature(inline_const)]
-#![feature(const_for)]
-
 #[macro_use]
 extern crate static_assertions;

@ -22,65 +10,72 @@ mod unicode_helper;
 mod widgets;

 pub use crate::{
-	function_entry::{FunctionEntry, Riemann},
-	math_app::AppSettings,
-	misc::{
-		hashed_storage_create, hashed_storage_read, newtons_method, option_vec_printer,
-		step_helper, EguiHelper, HashBytes,
-	},
-	unicode_helper::{to_chars_array, to_unicode_hash},
+    function_entry::{FunctionEntry, Riemann},
+    math_app::AppSettings,
+    misc::{
+        EguiHelper, HashBytes, hashed_storage_create, hashed_storage_read, newtons_method,
+        option_vec_printer, step_helper,
+    },
+    unicode_helper::{to_chars_array, to_unicode_hash},
 };

 cfg_if::cfg_if! {
-	if #[cfg(target_arch = "wasm32")] {
-		use wasm_bindgen::prelude::*;
+    if #[cfg(target_arch = "wasm32")] {
+        use wasm_bindgen::prelude::*;

-		use lol_alloc::{FreeListAllocator, LockedAllocator};
-		#[global_allocator]
-				static ALLOCATOR: LockedAllocator<FreeListAllocator> = LockedAllocator::new(FreeListAllocator::new());
+        use lol_alloc::{FreeListAllocator, LockedAllocator};
+        #[global_allocator]
+                static ALLOCATOR: LockedAllocator<FreeListAllocator> = LockedAllocator::new(FreeListAllocator::new());

-			use eframe::WebRunner;
-			// use tracing::metadata::LevelFilter;
-			#[derive(Clone)]
-			 #[wasm_bindgen]
-			 pub struct WebHandle {
-				 runner: WebRunner,
-			 }
+            use eframe::WebRunner;
+            // use tracing::metadata::LevelFilter;
+            #[derive(Clone)]
+             #[wasm_bindgen]
+             pub struct WebHandle {
+                 runner: WebRunner,
+             }

-			 #[wasm_bindgen]
-			 impl WebHandle {
-				 /// Installs a panic hook, then returns.
-				 #[allow(clippy::new_without_default)]
-				 #[wasm_bindgen(constructor)]
-				 pub fn new() -> Self {
-					 // eframe::WebLogger::init(LevelFilter::Debug).ok();
-					 tracing_wasm::set_as_global_default();
+             #[wasm_bindgen]
+             impl WebHandle {
+                 /// Installs a panic hook, then returns.
+                 #[allow(clippy::new_without_default)]
+                 #[wasm_bindgen(constructor)]
+                 pub fn new() -> Self {
+                     // eframe::WebLogger::init(LevelFilter::Debug).ok();
+                     tracing_wasm::set_as_global_default();

-					 Self {
-						 runner: WebRunner::new(),
-					 }
-				 }
+                     Self {
+                         runner: WebRunner::new(),
+                     }
+                 }

-				 /// Call this once from JavaScript to start your app.
-				 #[wasm_bindgen]
-				 pub async fn start(&self, canvas_id: &str) -> Result<(), wasm_bindgen::JsValue> {
-					 self.runner
-						 .start(
-							 canvas_id,
-							 eframe::WebOptions::default(),
-							 Box::new(|cc| Box::new(math_app::MathApp::new(cc))),
-						 )
-						 .await
-				 }
-			}
+                 /// Call this once from JavaScript to start your app.
+                 #[wasm_bindgen]
+                 pub async fn start(&self, canvas: web_sys::HtmlCanvasElement) -> Result<(), wasm_bindgen::JsValue> {
+                     self.runner
+                         .start(
+                             canvas,
+                             eframe::WebOptions::default(),
+                             Box::new(|cc| Ok(Box::new(math_app::MathApp::new(cc)))),
+                         )
+                         .await
+                 }
+            }

-		#[wasm_bindgen(start)]
-		pub async fn start() {
-			tracing::info!("Starting...");
+        #[wasm_bindgen(start)]
+        pub async fn start() {
+            tracing::info!("Starting...");

+            let window = web_sys::window().expect("no global window exists");
+            let document = window.document().expect("should have a document on window");
+            let canvas = document
+                .get_element_by_id("canvas")
+                .expect("should have a canvas element with id 'canvas'")
+                .dyn_into::<web_sys::HtmlCanvasElement>()
+                .expect("canvas element should be an HtmlCanvasElement");

-			let web_handle = WebHandle::new();
-			web_handle.start("canvas").await.unwrap()
-		}
-	}
+            let web_handle = WebHandle::new();
+            web_handle.start(canvas).await.unwrap()
+        }
+    }
 }
--- a/src/main.rs
+++ b/src/main.rs
@ -1,15 +1,3 @@
-#![feature(const_mut_refs)]
-#![feature(let_chains)]
-#![feature(const_trait_impl)]
-#![feature(core_intrinsics)]
-#![feature(const_fn_floating_point_arithmetic)]
-#![feature(const_assume)]
-#![feature(const_option_ext)]
-#![feature(const_slice_index)]
-#![feature(slice_split_at_unchecked)]
-#![feature(inline_const)]
-#![feature(const_for)]
-
 #[macro_use]
 extern crate static_assertions;

@ -23,16 +11,16 @@ mod widgets;

 // For running the program natively! (Because why not?)
 #[cfg(not(target_arch = "wasm32"))]
-fn main() -> eframe::Result<()> {
-	let subscriber = tracing_subscriber::FmtSubscriber::builder()
-		.with_max_level(tracing::Level::INFO)
-		.finish();
+fn main() -> eframe::Result {
+    let subscriber = tracing_subscriber::FmtSubscriber::builder()
+        .with_max_level(tracing::Level::INFO)
+        .finish();

-	tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");
+    tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");

-	eframe::run_native(
-		"(Yet-to-be-named) Graphing Software",
-		eframe::NativeOptions::default(),
-		Box::new(|cc| Box::new(math_app::MathApp::new(cc))),
-	)
+    eframe::run_native(
+        "(Yet-to-be-named) Graphing Software",
+        eframe::NativeOptions::default(),
+        Box::new(|cc| Ok(Box::new(math_app::MathApp::new(cc)))),
+    )
 }
--- a/src/math_app.rs
+++ b/src/math_app.rs
--- a/src/misc.rs
+++ b/src/misc.rs
@ -1,75 +1,82 @@
 use egui::Id;
 use egui_plot::{Line, PlotPoint, PlotPoints, Points};
 use emath::Pos2;
-use getrandom::getrandom;
 use itertools::Itertools;
 use parsing::FlatExWrapper;

 /// Implements traits that are useful when dealing with Vectors of egui's `Value`
 pub trait EguiHelper {
-	/// Converts to `egui::plot::Values`
-	fn to_values(self) -> PlotPoints;
+    /// Converts to `egui::plot::Values`
+    fn to_values(self) -> PlotPoints<'static>;

-	/// Converts to `egui::plot::Line`
-	fn to_line(self) -> Line;
+    /// Converts to `egui::plot::Line`
+    fn to_line(self) -> Line<'static>;

-	/// Converts to `egui::plot::Points`
-	fn to_points(self) -> Points;
+    /// Converts to `egui::plot::Points`
+    fn to_points(self) -> Points<'static>;

-	/// Converts Vector of Values into vector of tuples
-	fn to_tuple(self) -> Vec<(f64, f64)>;
+    /// Converts Vector of Values into vector of tuples
+    fn to_tuple(self) -> Vec<(f64, f64)>;
 }

 impl EguiHelper for Vec<PlotPoint> {
-	#[inline(always)]
-	fn to_values(self) -> PlotPoints {
-		PlotPoints::from(unsafe { std::mem::transmute::<Vec<PlotPoint>, Vec<[f64; 2]>>(self) })
-	}
+    #[inline(always)]
+    fn to_values(self) -> PlotPoints<'static> {
+        PlotPoints::from(unsafe { std::mem::transmute::<Vec<PlotPoint>, Vec<[f64; 2]>>(self) })
+    }

-	#[inline(always)]
-	fn to_line(self) -> Line { Line::new(self.to_values()) }
+    #[inline(always)]
+    fn to_line(self) -> Line<'static> {
+        Line::new("", self.to_values())
+    }

-	#[inline(always)]
-	fn to_points(self) -> Points { Points::new(self.to_values()) }
+    #[inline(always)]
+    fn to_points(self) -> Points<'static> {
+        Points::new("", self.to_values())
+    }

-	#[inline(always)]
-	fn to_tuple(self) -> Vec<(f64, f64)> {
-		unsafe { std::mem::transmute::<Vec<PlotPoint>, Vec<(f64, f64)>>(self) }
-	}
+    #[inline(always)]
+    fn to_tuple(self) -> Vec<(f64, f64)> {
+        unsafe { std::mem::transmute::<Vec<PlotPoint>, Vec<(f64, f64)>>(self) }
+    }
 }

 pub trait Offset {
-	fn offset_y(self, y_offset: f32) -> Pos2;
-	fn offset_x(self, x_offset: f32) -> Pos2;
+    fn offset_y(self, y_offset: f32) -> Pos2;
+    fn offset_x(self, x_offset: f32) -> Pos2;
 }

-impl const Offset for Pos2 {
-	fn offset_y(self, y_offset: f32) -> Pos2 {
-		Pos2 {
-			x: self.x,
-			y: self.y + y_offset,
-		}
-	}
+impl Offset for Pos2 {
+    fn offset_y(self, y_offset: f32) -> Pos2 {
+        Pos2 {
+            x: self.x,
+            y: self.y + y_offset,
+        }
+    }

-	fn offset_x(self, x_offset: f32) -> Pos2 {
-		Pos2 {
-			x: self.x + x_offset,
-			y: self.y,
-		}
-	}
+    fn offset_x(self, x_offset: f32) -> Pos2 {
+        Pos2 {
+            x: self.x + x_offset,
+            y: self.y,
+        }
+    }
 }

-pub const fn create_id(x: u64) -> Id { unsafe { std::mem::transmute::<u64, Id>(x) } }
+pub const fn create_id(x: u64) -> Id {
+    unsafe { std::mem::transmute::<u64, Id>(x) }
+}

-pub const fn get_u64_id(id: Id) -> u64 { unsafe { std::mem::transmute::<Id, u64>(id) } }
+pub const fn get_u64_id(id: Id) -> u64 {
+    unsafe { std::mem::transmute::<Id, u64>(id) }
+}

 /*
 /// Rounds f64 to `n` decimal places
 pub fn decimal_round(x: f64, n: usize) -> f64 {
-	let large_number: f64 = 10.0_f64.powf(n as f64); // 10^n
+    let large_number: f64 = 10.0_f64.powf(n as f64); // 10^n

-	// round and devide in order to cutoff after the `n`th decimal place
-	(x * large_number).round() / large_number
+    // round and devide in order to cutoff after the `n`th decimal place
+    (x * large_number).round() / large_number
 }
 */

@ -80,18 +87,21 @@ pub fn decimal_round(x: f64, n: usize) -> f64 {
 /// `f_1` is f'(x) aka the derivative of f(x)
 /// The function returns a Vector of `x` values where roots occur
 pub fn newtons_method_helper(
-	threshold: f64, range: &std::ops::Range<f64>, data: &[PlotPoint], f: &FlatExWrapper,
-	f_1: &FlatExWrapper,
+    threshold: f64,
+    range: &std::ops::Range<f64>,
+    data: &[PlotPoint],
+    f: &FlatExWrapper,
+    f_1: &FlatExWrapper,
 ) -> Vec<f64> {
-	data.iter()
-		.tuple_windows()
-		.filter(|(prev, curr)| prev.y.is_finite() && curr.y.is_finite())
-		.filter(|(prev, curr)| prev.y.signum() != curr.y.signum())
-		.map(|(start, _)| start.x)
-		.map(|x| newtons_method(f, f_1, x, range, threshold))
-		.filter(|x| x.is_some())
-		.map(|x| unsafe { x.unwrap_unchecked() })
-		.collect()
+    data.iter()
+        .tuple_windows()
+        .filter(|(prev, curr)| prev.y.is_finite() && curr.y.is_finite())
+        .filter(|(prev, curr)| prev.y.signum() != curr.y.signum())
+        .map(|(start, _)| start.x)
+        .map(|x| newtons_method(f, f_1, x, range, threshold))
+        .filter(|x| x.is_some())
+        .map(|x| unsafe { x.unwrap_unchecked() })
+        .collect()
 }

 /// `range` is the range of valid x values (used to stop calculation when
@ -99,64 +109,67 @@ pub fn newtons_method_helper(
 /// `f_1` is f'(x) aka the derivative of f(x)
 /// The function returns an `Option<f64>` of the x value at which a root occurs
 pub fn newtons_method(
-	f: &FlatExWrapper, f_1: &FlatExWrapper, start_x: f64, range: &std::ops::Range<f64>,
-	threshold: f64,
+    f: &FlatExWrapper,
+    f_1: &FlatExWrapper,
+    start_x: f64,
+    range: &std::ops::Range<f64>,
+    threshold: f64,
 ) -> Option<f64> {
-	let mut x1: f64 = start_x;
-	let mut x2: f64;
-	let mut derivative: f64;
-	loop {
-		derivative = f_1.eval(&[x1]);
-		if !derivative.is_finite() {
-			return None;
-		}
+    let mut x1: f64 = start_x;
+    let mut x2: f64;
+    let mut derivative: f64;
+    loop {
+        derivative = f_1.eval(&[x1]);
+        if !derivative.is_finite() {
+            return None;
+        }

-		x2 = x1 - (f.eval(&[x1]) / derivative);
-		if !x2.is_finite() | !range.contains(&x2) {
-			return None;
-		}
+        x2 = x1 - (f.eval(&[x1]) / derivative);
+        if !x2.is_finite() | !range.contains(&x2) {
+            return None;
+        }

-		// If below threshold, break
-		if (x2 - x1).abs() < threshold {
-			return Some(x2);
-		}
+        // If below threshold, break
+        if (x2 - x1).abs() < threshold {
+            return Some(x2);
+        }

-		x1 = x2;
-	}
+        x1 = x2;
+    }
 }

 /// Inputs `Vec<Option<T>>` and outputs a `String` containing a pretty representation of the Vector
 pub fn option_vec_printer<T: ToString>(data: &[Option<T>]) -> String {
-	let formatted: String = data
-		.iter()
-		.map(|item| match item {
-			Some(x) => x.to_string(),
-			None => "None".to_owned(),
-		})
-		.join(", ");
+    let formatted: String = data
+        .iter()
+        .map(|item| match item {
+            Some(x) => x.to_string(),
+            None => "None".to_owned(),
+        })
+        .join(", ");

-	format!("[{}]", formatted)
+    format!("[{}]", formatted)
 }

 /// Returns a vector of length `max_i` starting at value `min_x` with step of `step`
 pub fn step_helper(max_i: usize, min_x: f64, step: f64) -> Vec<f64> {
-	(0..max_i)
-		.map(move |x: usize| (x as f64 * step) + min_x)
-		.collect()
+    (0..max_i)
+        .map(move |x: usize| (x as f64 * step) + min_x)
+        .collect()
 }

 // TODO: use in hovering over points
 /// Attempts to see what variable `x` is almost
 #[allow(dead_code)]
 pub fn almost_variable(x: f64) -> Option<char> {
-	const EPSILON: f32 = f32::EPSILON * 2.0;
-	if emath::almost_equal(x as f32, std::f32::consts::E, EPSILON) {
-		Some('e')
-	} else if emath::almost_equal(x as f32, std::f32::consts::PI, EPSILON) {
-		Some('π')
-	} else {
-		None
-	}
+    const EPSILON: f32 = f32::EPSILON * 2.0;
+    if emath::almost_equal(x as f32, std::f32::consts::E, EPSILON) {
+        Some('e')
+    } else if emath::almost_equal(x as f32, std::f32::consts::PI, EPSILON) {
+        Some('π')
+    } else {
+        None
+    }
 }

 pub const HASH_LENGTH: usize = 8;
@ -166,36 +179,82 @@ pub type HashBytes = [u8; HASH_LENGTH];

 #[allow(dead_code)]
 pub fn hashed_storage_create(hashbytes: HashBytes, data: &[u8]) -> String {
-	unsafe { std::mem::transmute::<Vec<u8>, String>([hashbytes.to_vec(), data.to_vec()].concat()) }
+    unsafe { std::mem::transmute::<Vec<u8>, String>([hashbytes.to_vec(), data.to_vec()].concat()) }
 }

 #[allow(dead_code)]
 pub fn hashed_storage_read(data: &str) -> Option<(HashBytes, &[u8])> {
-	// Make sure data is long enough to decode
-	if HASH_LENGTH >= data.len() {
-		return None;
-	}
+    // Make sure data is long enough to decode
+    if HASH_LENGTH >= data.len() {
+        return None;
+    }

-	// Transmute data into slice
-	let decoded_1: &[u8] = unsafe { std::mem::transmute::<&str, &[u8]>(data) };
+    // Transmute data into slice
+    let decoded_1: &[u8] = unsafe { std::mem::transmute::<&str, &[u8]>(data) };

-	// Return hash and decoded data
-	Some((
-		unsafe { *(decoded_1[..HASH_LENGTH].as_ptr() as *const HashBytes) },
-		&decoded_1[HASH_LENGTH..],
-	))
+    // Return hash and decoded data
+    Some((
+        unsafe { *(decoded_1[..HASH_LENGTH].as_ptr() as *const HashBytes) },
+        &decoded_1[HASH_LENGTH..],
+    ))
 }

 /// Creates and returns random u64
 pub fn random_u64() -> Result<u64, getrandom::Error> {
-	// Buffer of 8 `u8`s that are later merged into one u64
-	let mut buf = [0u8; 8];
-	// Populate buffer with random values
-	getrandom(&mut buf)?;
-	// Merge buffer into u64
-	Ok(u64::from_be_bytes(buf))
+    // Buffer of 8 `u8`s that are later merged into one u64
+    let mut buf = [0u8; 8];
+    // Populate buffer with random values
+    getrandom::fill(&mut buf)?;
+    // Merge buffer into u64
+    Ok(u64::from_be_bytes(buf))
 }

 include!(concat!(env!("OUT_DIR"), "/valid_chars.rs"));

-pub fn is_valid_char(c: char) -> bool { c.is_alphanumeric() | VALID_EXTRA_CHARS.contains(&c) }
+pub fn is_valid_char(c: char) -> bool {
+    c.is_alphanumeric() | VALID_EXTRA_CHARS.contains(&c)
+}
+
+/// Find intersection points between two functions given their plotted data
+/// Returns a vector of PlotPoints where the functions intersect
+pub fn find_intersections(data1: &[PlotPoint], data2: &[PlotPoint]) -> Vec<PlotPoint> {
+    if data1.is_empty() || data2.is_empty() || data1.len() != data2.len() {
+        return Vec::new();
+    }
+
+    // Calculate difference between functions at each x point
+    let differences: Vec<(f64, f64)> = data1
+        .iter()
+        .zip(data2.iter())
+        .filter(|(p1, p2)| p1.y.is_finite() && p2.y.is_finite())
+        .map(|(p1, p2)| (p1.x, p1.y - p2.y))
+        .collect();
+
+    // Find where sign changes (intersection points)
+    differences
+        .iter()
+        .tuple_windows()
+        .filter(|((_, diff1), (_, diff2))| diff1.signum() != diff2.signum())
+        .map(|((x1, diff1), (x2, diff2))| {
+            // Linear interpolation to find approximate x of intersection
+            let t = diff1.abs() / (diff1.abs() + diff2.abs());
+            let x = x1 + t * (x2 - x1);
+
+            // Find corresponding y values and average them for the intersection point
+            // We need to interpolate y values from both functions
+            let y1_at_x1 = data1
+                .iter()
+                .find(|p| (p.x - x1).abs() < f64::EPSILON)
+                .map(|p| p.y)
+                .unwrap_or(0.0);
+            let y1_at_x2 = data1
+                .iter()
+                .find(|p| (p.x - x2).abs() < f64::EPSILON)
+                .map(|p| p.y)
+                .unwrap_or(0.0);
+            let y = y1_at_x1 + t * (y1_at_x2 - y1_at_x1);
+
+            PlotPoint::new(x, y)
+        })
+        .collect()
+}
--- a/src/unicode_helper.rs
+++ b/src/unicode_helper.rs
@ -2,19 +2,19 @@ use itertools::Itertools;

 #[allow(dead_code)]
 pub fn to_unicode_hash(c: char) -> String {
-	c.escape_unicode()
-		.to_string()
-		.replace(r"\\u{", "")
-		.replace(['{', '}'], "")
-		.to_uppercase()
+    c.escape_unicode()
+        .to_string()
+        .replace(r"\\u{", "")
+        .replace(['{', '}'], "")
+        .to_uppercase()
 }

 #[allow(dead_code)]
 pub fn to_chars_array(chars: Vec<char>) -> String {
-	"[".to_string()
-		+ &chars
-			.iter()
-			.map(|c| format!("'{}'", c.escape_unicode()))
-			.join(", ")
-		+ "]"
+    "[".to_string()
+        + &chars
+            .iter()
+            .map(|c| format!("'{}'", c.escape_unicode()))
+            .join(", ")
+        + "]"
 }
--- a/src/widgets.rs
+++ b/src/widgets.rs
@ -3,12 +3,15 @@ use egui::{Id, InnerResponse};

 /// Creates an area ontop of a widget with an y offset
 pub fn widgets_ontop<R>(
-	ui: &egui::Ui, id: Id, re: &egui::Response, y_offset: f32,
-	add_contents: impl FnOnce(&mut egui::Ui) -> R,
+    ui: &egui::Ui,
+    id: Id,
+    re: &egui::Response,
+    y_offset: f32,
+    add_contents: impl FnOnce(&mut egui::Ui) -> R,
 ) -> InnerResponse<R> {
-	let area = egui::Area::new(id)
-		.fixed_pos(re.rect.min.offset_y(y_offset))
-		.order(egui::Order::Foreground);
+    let area = egui::Area::new(id)
+        .fixed_pos(re.rect.min.offset_y(y_offset))
+        .order(egui::Order::Foreground);

-	area.show(ui.ctx(), |ui| add_contents(ui))
+    area.show(ui.ctx(), |ui| add_contents(ui))
 }
--- a/start-server.sh
+++ b/start-server.sh
@ -1,6 +0,0 @@
-#!/bin/bash
-set -e
-
-bash build.sh "$1"
-
-basic-http-server tmp/
--- a/tests/autocomplete.rs
+++ b/tests/autocomplete.rs
@ -1,159 +1,159 @@
 use parsing::{AutoComplete, Hint, Movement};

 enum Action<'a> {
-	AssertIndex(usize),
-	AssertString(&'a str),
-	AssertHint(&'a str),
-	SetString(&'a str),
-	Move(Movement),
+    AssertIndex(usize),
+    AssertString(&'a str),
+    AssertHint(&'a str),
+    SetString(&'a str),
+    Move(Movement),
 }
 use Action::*;

 fn ac_tester(actions: &[Action]) {
-	let mut ac = AutoComplete::default();
-	for action in actions.iter() {
-		match action {
-			AssertIndex(target_i) => {
-				if &ac.i != target_i {
-					panic!(
-						"AssertIndex failed: Current: '{}' Expected: '{}'",
-						ac.i, target_i
-					)
-				}
-			}
-			AssertString(target_string) => {
-				if &ac.string != target_string {
-					panic!(
-						"AssertString failed: Current: '{}' Expected: '{}'",
-						ac.string, target_string
-					)
-				}
-			}
-			AssertHint(target_hint) => match ac.hint {
-				Hint::None => {
-					if !target_hint.is_empty() {
-						panic!(
-							"AssertHint failed on `Hint::None`: Expected: {}",
-							target_hint
-						);
-					}
-				}
-				Hint::Many(hints) => {
-					let hint = hints[ac.i];
-					if &hint != target_hint {
-						panic!(
-								"AssertHint failed on `Hint::Many`: Current: '{}' (index: {}) Expected: '{}'",
-								hint, ac.i, target_hint
-							)
-					}
-				}
-				Hint::Single(hint) => {
-					if hint != target_hint {
-						panic!(
-							"AssertHint failed on `Hint::Single`: Current: '{}' Expected: '{}'",
-							hint, target_hint
-						)
-					}
-				}
-			},
-			SetString(target_string) => {
-				ac.update_string(target_string);
-			}
-			Move(target_movement) => {
-				ac.register_movement(target_movement);
-			}
-		}
-	}
+    let mut ac = AutoComplete::default();
+    for action in actions.iter() {
+        match action {
+            AssertIndex(target_i) => {
+                if &ac.i != target_i {
+                    panic!(
+                        "AssertIndex failed: Current: '{}' Expected: '{}'",
+                        ac.i, target_i
+                    )
+                }
+            }
+            AssertString(target_string) => {
+                if &ac.string != target_string {
+                    panic!(
+                        "AssertString failed: Current: '{}' Expected: '{}'",
+                        ac.string, target_string
+                    )
+                }
+            }
+            AssertHint(target_hint) => match ac.hint {
+                Hint::None => {
+                    if !target_hint.is_empty() {
+                        panic!(
+                            "AssertHint failed on `Hint::None`: Expected: {}",
+                            target_hint
+                        );
+                    }
+                }
+                Hint::Many(hints) => {
+                    let hint = hints[ac.i];
+                    if &hint != target_hint {
+                        panic!(
+                            "AssertHint failed on `Hint::Many`: Current: '{}' (index: {}) Expected: '{}'",
+                            hint, ac.i, target_hint
+                        )
+                    }
+                }
+                Hint::Single(hint) => {
+                    if hint != target_hint {
+                        panic!(
+                            "AssertHint failed on `Hint::Single`: Current: '{}' Expected: '{}'",
+                            hint, target_hint
+                        )
+                    }
+                }
+            },
+            SetString(target_string) => {
+                ac.update_string(target_string);
+            }
+            Move(target_movement) => {
+                ac.register_movement(target_movement);
+            }
+        }
+    }
 }

 #[test]
 fn single() {
-	ac_tester(&[
-		SetString(""),
-		AssertHint("x^2"),
-		Move(Movement::Up),
-		AssertIndex(0),
-		AssertString(""),
-		AssertHint("x^2"),
-		Move(Movement::Down),
-		AssertIndex(0),
-		AssertString(""),
-		AssertHint("x^2"),
-		Move(Movement::Complete),
-		AssertString("x^2"),
-		AssertHint(""),
-		AssertIndex(0),
-	]);
+    ac_tester(&[
+        SetString(""),
+        AssertHint("x^2"),
+        Move(Movement::Up),
+        AssertIndex(0),
+        AssertString(""),
+        AssertHint("x^2"),
+        Move(Movement::Down),
+        AssertIndex(0),
+        AssertString(""),
+        AssertHint("x^2"),
+        Move(Movement::Complete),
+        AssertString("x^2"),
+        AssertHint(""),
+        AssertIndex(0),
+    ]);
 }

 #[test]
 fn multi() {
-	ac_tester(&[
-		SetString("s"),
-		AssertHint("in("),
-		Move(Movement::Up),
-		AssertIndex(3),
-		AssertString("s"),
-		AssertHint("ignum("),
-		Move(Movement::Down),
-		AssertIndex(0),
-		AssertString("s"),
-		AssertHint("in("),
-		Move(Movement::Down),
-		AssertIndex(1),
-		AssertString("s"),
-		AssertHint("qrt("),
-		Move(Movement::Up),
-		AssertIndex(0),
-		AssertString("s"),
-		AssertHint("in("),
-		Move(Movement::Complete),
-		AssertString("sin("),
-		AssertHint(")"),
-		AssertIndex(0),
-	]);
+    ac_tester(&[
+        SetString("s"),
+        AssertHint("in("),
+        Move(Movement::Up),
+        AssertIndex(3),
+        AssertString("s"),
+        AssertHint("ignum("),
+        Move(Movement::Down),
+        AssertIndex(0),
+        AssertString("s"),
+        AssertHint("in("),
+        Move(Movement::Down),
+        AssertIndex(1),
+        AssertString("s"),
+        AssertHint("qrt("),
+        Move(Movement::Up),
+        AssertIndex(0),
+        AssertString("s"),
+        AssertHint("in("),
+        Move(Movement::Complete),
+        AssertString("sin("),
+        AssertHint(")"),
+        AssertIndex(0),
+    ]);
 }

 #[test]
 fn none() {
-	// string that should give no hints
-	let random = "qwert987gybhj";
-	assert_eq!(parsing::generate_hint(random), &Hint::None);
+    // string that should give no hints
+    let random = "qwert987gybhj";
+    assert_eq!(parsing::generate_hint(random), &Hint::None);

-	ac_tester(&[
-		SetString(random),
-		AssertHint(""),
-		Move(Movement::Up),
-		AssertIndex(0),
-		AssertString(random),
-		AssertHint(""),
-		Move(Movement::Down),
-		AssertIndex(0),
-		AssertString(random),
-		AssertHint(""),
-		Move(Movement::Complete),
-		AssertString(random),
-		AssertHint(""),
-		AssertIndex(0),
-	]);
+    ac_tester(&[
+        SetString(random),
+        AssertHint(""),
+        Move(Movement::Up),
+        AssertIndex(0),
+        AssertString(random),
+        AssertHint(""),
+        Move(Movement::Down),
+        AssertIndex(0),
+        AssertString(random),
+        AssertHint(""),
+        Move(Movement::Complete),
+        AssertString(random),
+        AssertHint(""),
+        AssertIndex(0),
+    ]);
 }

 #[test]
 fn parens() {
-	ac_tester(&[
-		SetString("sin(x"),
-		AssertHint(")"),
-		Move(Movement::Up),
-		AssertIndex(0),
-		AssertString("sin(x"),
-		AssertHint(")"),
-		Move(Movement::Down),
-		AssertIndex(0),
-		AssertString("sin(x"),
-		AssertHint(")"),
-		Move(Movement::Complete),
-		AssertString("sin(x)"),
-		AssertHint(""),
-		AssertIndex(0),
-	]);
+    ac_tester(&[
+        SetString("sin(x"),
+        AssertHint(")"),
+        Move(Movement::Up),
+        AssertIndex(0),
+        AssertString("sin(x"),
+        AssertHint(")"),
+        Move(Movement::Down),
+        AssertIndex(0),
+        AssertString("sin(x"),
+        AssertHint(")"),
+        Move(Movement::Complete),
+        AssertString("sin(x)"),
+        AssertHint(""),
+        AssertIndex(0),
+    ]);
 }
--- a/tests/function.rs
+++ b/tests/function.rs
@ -1,262 +1,274 @@
 use ytbn_graphing_software::{AppSettings, EguiHelper, FunctionEntry, Riemann};

 fn app_settings_constructor(
-	sum: Riemann, integral_min_x: f64, integral_max_x: f64, pixel_width: usize,
-	integral_num: usize, min_x: f64, max_x: f64,
+    sum: Riemann,
+    integral_min_x: f64,
+    integral_max_x: f64,
+    pixel_width: usize,
+    integral_num: usize,
+    min_x: f64,
+    max_x: f64,
 ) -> AppSettings {
-	AppSettings {
-		riemann_sum: sum,
-		integral_min_x,
-		integral_max_x,
-		min_x,
-		max_x,
-		integral_changed: true,
-		integral_num,
-		do_extrema: false,
-		do_roots: false,
-		plot_width: pixel_width,
-	}
+    AppSettings {
+        riemann_sum: sum,
+        integral_min_x,
+        integral_max_x,
+        min_x,
+        max_x,
+        integral_changed: true,
+        integral_num,
+        do_extrema: false,
+        do_roots: false,
+        do_intersections: false,
+        plot_width: pixel_width,
+    }
 }

 static BACK_TARGET: [(f64, f64); 11] = [
-	(-1.0, 1.0),
-	(-0.8, 0.6400000000000001),
-	(-0.6, 0.36),
-	(-0.4, 0.16000000000000003),
-	(-0.19999999999999996, 0.03999999999999998),
-	(0.0, 0.0),
-	(0.19999999999999996, 0.03999999999999998),
-	(0.3999999999999999, 0.15999999999999992),
-	(0.6000000000000001, 0.3600000000000001),
-	(0.8, 0.6400000000000001),
-	(1.0, 1.0),
+    (-1.0, 1.0),
+    (-0.8, 0.6400000000000001),
+    (-0.6, 0.36),
+    (-0.4, 0.16000000000000003),
+    (-0.19999999999999996, 0.03999999999999998),
+    (0.0, 0.0),
+    (0.19999999999999996, 0.03999999999999998),
+    (0.3999999999999999, 0.15999999999999992),
+    (0.6000000000000001, 0.3600000000000001),
+    (0.8, 0.6400000000000001),
+    (1.0, 1.0),
 ];

 static DERIVATIVE_TARGET: [(f64, f64); 11] = [
-	(-1.0, -2.0),
-	(-0.8, -1.6),
-	(-0.6, -1.2),
-	(-0.4, -0.8),
-	(-0.19999999999999996, -0.3999999999999999),
-	(0.0, 0.0),
-	(0.19999999999999996, 0.3999999999999999),
-	(0.3999999999999999, 0.7999999999999998),
-	(0.6000000000000001, 1.2000000000000002),
-	(0.8, 1.6),
-	(1.0, 2.0),
+    (-1.0, -2.0),
+    (-0.8, -1.6),
+    (-0.6, -1.2),
+    (-0.4, -0.8),
+    (-0.19999999999999996, -0.3999999999999999),
+    (0.0, 0.0),
+    (0.19999999999999996, 0.3999999999999999),
+    (0.3999999999999999, 0.7999999999999998),
+    (0.6000000000000001, 1.2000000000000002),
+    (0.8, 1.6),
+    (1.0, 2.0),
 ];

 #[cfg(test)]
 fn do_test(sum: Riemann, area_target: f64) {
-	let settings = app_settings_constructor(sum, -1.0, 1.0, 10, 10, -1.0, 1.0);
+    let settings = app_settings_constructor(sum, -1.0, 1.0, 10, 10, -1.0, 1.0);

-	let mut function = FunctionEntry::default();
-	function.update_string("x^2");
-	function.integral = true;
-	function.derivative = true;
+    let mut function = FunctionEntry::default();
+    function.update_string("x^2");
+    function.integral = true;
+    function.derivative = true;

-	let mut settings = settings;
-	{
-		function.calculate(true, true, false, settings);
-		assert!(!function.back_data.is_empty());
-		assert_eq!(function.back_data.len(), settings.plot_width + 1);
+    let mut settings = settings;
+    {
+        function.calculate(true, true, false, settings);
+        assert!(!function.back_data.is_empty());
+        assert_eq!(function.back_data.len(), settings.plot_width + 1);

-		assert!(function.integral);
-		assert!(function.derivative);
+        assert!(function.integral);
+        assert!(function.derivative);

-		assert_eq!(!function.root_data.is_empty(), settings.do_roots);
-		assert_eq!(!function.extrema_data.is_empty(), settings.do_extrema);
-		assert!(!function.derivative_data.is_empty());
-		assert!(function.integral_data.is_some());
+        assert_eq!(!function.root_data.is_empty(), settings.do_roots);
+        assert_eq!(!function.extrema_data.is_empty(), settings.do_extrema);
+        assert!(!function.derivative_data.is_empty());
+        assert!(function.integral_data.is_some());

-		assert_eq!(function.integral_data.clone().unwrap().1, area_target);
+        assert_eq!(function.integral_data.clone().unwrap().1, area_target);

-		let a = function.derivative_data.clone().to_tuple();
+        let a = function.derivative_data.clone().to_tuple();

-		assert_eq!(a.len(), DERIVATIVE_TARGET.len());
+        assert_eq!(a.len(), DERIVATIVE_TARGET.len());

-		for i in 0..a.len() {
-			if !emath::almost_equal(a[i].0 as f32, DERIVATIVE_TARGET[i].0 as f32, f32::EPSILON)
-				| !emath::almost_equal(a[i].1 as f32, DERIVATIVE_TARGET[i].1 as f32, f32::EPSILON)
-			{
-				panic!("Expected: {:?}\nGot: {:?}", a, DERIVATIVE_TARGET);
-			}
-		}
+        for i in 0..a.len() {
+            if !emath::almost_equal(a[i].0 as f32, DERIVATIVE_TARGET[i].0 as f32, f32::EPSILON)
+                | !emath::almost_equal(a[i].1 as f32, DERIVATIVE_TARGET[i].1 as f32, f32::EPSILON)
+            {
+                panic!("Expected: {:?}\nGot: {:?}", a, DERIVATIVE_TARGET);
+            }
+        }

-		let a_1 = function.back_data.clone().to_tuple();
+        let a_1 = function.back_data.clone().to_tuple();

-		assert_eq!(a_1.len(), BACK_TARGET.len());
+        assert_eq!(a_1.len(), BACK_TARGET.len());

-		assert_eq!(a.len(), BACK_TARGET.len());
+        assert_eq!(a.len(), BACK_TARGET.len());

-		for i in 0..a.len() {
-			if !emath::almost_equal(a_1[i].0 as f32, BACK_TARGET[i].0 as f32, f32::EPSILON)
-				| !emath::almost_equal(a_1[i].1 as f32, BACK_TARGET[i].1 as f32, f32::EPSILON)
-			{
-				panic!("Expected: {:?}\nGot: {:?}", a_1, BACK_TARGET);
-			}
-		}
-	}
+        for i in 0..a.len() {
+            if !emath::almost_equal(a_1[i].0 as f32, BACK_TARGET[i].0 as f32, f32::EPSILON)
+                | !emath::almost_equal(a_1[i].1 as f32, BACK_TARGET[i].1 as f32, f32::EPSILON)
+            {
+                panic!("Expected: {:?}\nGot: {:?}", a_1, BACK_TARGET);
+            }
+        }
+    }

-	{
-		settings.min_x += 1.0;
-		settings.max_x += 1.0;
-		function.calculate(true, true, false, settings);
+    {
+        settings.min_x += 1.0;
+        settings.max_x += 1.0;
+        function.calculate(true, true, false, settings);

-		let a = function
-			.derivative_data
-			.clone()
-			.to_tuple()
-			.iter()
-			.take(6)
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let a = function
+            .derivative_data
+            .clone()
+            .to_tuple()
+            .iter()
+            .take(6)
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		let b = DERIVATIVE_TARGET
-			.iter()
-			.rev()
-			.take(6)
-			.rev()
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let b = DERIVATIVE_TARGET
+            .iter()
+            .rev()
+            .take(6)
+            .rev()
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		assert_eq!(a.len(), b.len());
+        assert_eq!(a.len(), b.len());

-		for i in 0..a.len() {
-			if !emath::almost_equal(a[i].0 as f32, b[i].0 as f32, f32::EPSILON)
-				| !emath::almost_equal(a[i].1 as f32, b[i].1 as f32, f32::EPSILON)
-			{
-				panic!("Expected: {:?}\nGot: {:?}", a, b);
-			}
-		}
+        for i in 0..a.len() {
+            if !emath::almost_equal(a[i].0 as f32, b[i].0 as f32, f32::EPSILON)
+                | !emath::almost_equal(a[i].1 as f32, b[i].1 as f32, f32::EPSILON)
+            {
+                panic!("Expected: {:?}\nGot: {:?}", a, b);
+            }
+        }

-		let a_1 = function
-			.back_data
-			.clone()
-			.to_tuple()
-			.iter()
-			.take(6)
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let a_1 = function
+            .back_data
+            .clone()
+            .to_tuple()
+            .iter()
+            .take(6)
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		let b_1 = BACK_TARGET
-			.iter()
-			.rev()
-			.take(6)
-			.rev()
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let b_1 = BACK_TARGET
+            .iter()
+            .rev()
+            .take(6)
+            .rev()
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		assert_eq!(a_1.len(), b_1.len());
+        assert_eq!(a_1.len(), b_1.len());

-		assert_eq!(a.len(), b_1.len());
+        assert_eq!(a.len(), b_1.len());

-		for i in 0..a.len() {
-			if !emath::almost_equal(a_1[i].0 as f32, b_1[i].0 as f32, f32::EPSILON)
-				| !emath::almost_equal(a_1[i].1 as f32, b_1[i].1 as f32, f32::EPSILON)
-			{
-				panic!("Expected: {:?}\nGot: {:?}", a_1, b_1);
-			}
-		}
-	}
+        for i in 0..a.len() {
+            if !emath::almost_equal(a_1[i].0 as f32, b_1[i].0 as f32, f32::EPSILON)
+                | !emath::almost_equal(a_1[i].1 as f32, b_1[i].1 as f32, f32::EPSILON)
+            {
+                panic!("Expected: {:?}\nGot: {:?}", a_1, b_1);
+            }
+        }
+    }

-	{
-		settings.min_x -= 2.0;
-		settings.max_x -= 2.0;
-		function.calculate(true, true, false, settings);
+    {
+        settings.min_x -= 2.0;
+        settings.max_x -= 2.0;
+        function.calculate(true, true, false, settings);

-		let a = function
-			.derivative_data
-			.clone()
-			.to_tuple()
-			.iter()
-			.rev()
-			.take(6)
-			.rev()
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let a = function
+            .derivative_data
+            .clone()
+            .to_tuple()
+            .iter()
+            .rev()
+            .take(6)
+            .rev()
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		let b = DERIVATIVE_TARGET
-			.iter()
-			.take(6)
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let b = DERIVATIVE_TARGET
+            .iter()
+            .take(6)
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		assert_eq!(a.len(), b.len());
+        assert_eq!(a.len(), b.len());

-		for i in 0..a.len() {
-			if !emath::almost_equal(a[i].0 as f32, b[i].0 as f32, f32::EPSILON)
-				| !emath::almost_equal(a[i].1 as f32, b[i].1 as f32, f32::EPSILON)
-			{
-				panic!("Expected: {:?}\nGot: {:?}", a, b);
-			}
-		}
+        for i in 0..a.len() {
+            if !emath::almost_equal(a[i].0 as f32, b[i].0 as f32, f32::EPSILON)
+                | !emath::almost_equal(a[i].1 as f32, b[i].1 as f32, f32::EPSILON)
+            {
+                panic!("Expected: {:?}\nGot: {:?}", a, b);
+            }
+        }

-		let a_1 = function
-			.back_data
-			.clone()
-			.to_tuple()
-			.iter()
-			.rev()
-			.take(6)
-			.rev()
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let a_1 = function
+            .back_data
+            .clone()
+            .to_tuple()
+            .iter()
+            .rev()
+            .take(6)
+            .rev()
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		let b_1 = BACK_TARGET
-			.iter()
-			.take(6)
-			.cloned()
-			.collect::<Vec<(f64, f64)>>();
+        let b_1 = BACK_TARGET
+            .iter()
+            .take(6)
+            .cloned()
+            .collect::<Vec<(f64, f64)>>();

-		assert_eq!(a_1.len(), b_1.len());
+        assert_eq!(a_1.len(), b_1.len());

-		assert_eq!(a.len(), b_1.len());
+        assert_eq!(a.len(), b_1.len());

-		for i in 0..a.len() {
-			if !emath::almost_equal(a_1[i].0 as f32, b_1[i].0 as f32, f32::EPSILON)
-				| !emath::almost_equal(a_1[i].1 as f32, b_1[i].1 as f32, f32::EPSILON)
-			{
-				panic!("Expected: {:?}\nGot: {:?}", a_1, b_1);
-			}
-		}
-	}
+        for i in 0..a.len() {
+            if !emath::almost_equal(a_1[i].0 as f32, b_1[i].0 as f32, f32::EPSILON)
+                | !emath::almost_equal(a_1[i].1 as f32, b_1[i].1 as f32, f32::EPSILON)
+            {
+                panic!("Expected: {:?}\nGot: {:?}", a_1, b_1);
+            }
+        }
+    }

-	{
-		function.update_string("sin(x)");
-		assert!(function.get_test_result().is_none());
-		assert_eq!(&function.raw_func_str, "sin(x)");
+    {
+        function.update_string("sin(x)");
+        assert!(function.get_test_result().is_none());
+        assert_eq!(&function.raw_func_str, "sin(x)");

-		function.integral = false;
-		function.derivative = false;
+        function.integral = false;
+        function.derivative = false;

-		assert!(!function.integral);
-		assert!(!function.derivative);
+        assert!(!function.integral);
+        assert!(!function.derivative);

-		assert!(function.back_data.is_empty());
-		assert!(function.integral_data.is_none());
-		assert!(function.root_data.is_empty());
-		assert!(function.extrema_data.is_empty());
-		assert!(function.derivative_data.is_empty());
+        assert!(function.back_data.is_empty());
+        assert!(function.integral_data.is_none());
+        assert!(function.root_data.is_empty());
+        assert!(function.extrema_data.is_empty());
+        assert!(function.derivative_data.is_empty());

-		settings.min_x -= 1.0;
-		settings.max_x -= 1.0;
+        settings.min_x -= 1.0;
+        settings.max_x -= 1.0;

-		function.calculate(true, true, false, settings);
+        function.calculate(true, true, false, settings);

-		assert!(!function.back_data.is_empty());
-		assert!(function.integral_data.is_none());
-		assert!(function.root_data.is_empty());
-		assert!(function.extrema_data.is_empty());
-		assert!(!function.derivative_data.is_empty());
-	}
+        assert!(!function.back_data.is_empty());
+        assert!(function.integral_data.is_none());
+        assert!(function.root_data.is_empty());
+        assert!(function.extrema_data.is_empty());
+        assert!(!function.derivative_data.is_empty());
+    }
 }

 #[test]
-fn left_function() { do_test(Riemann::Left, 0.9600000000000001); }
+fn left_function() {
+    do_test(Riemann::Left, 0.9600000000000001);
+}

 #[test]
-fn middle_function() { do_test(Riemann::Middle, 0.92); }
+fn middle_function() {
+    do_test(Riemann::Middle, 0.92);
+}

 #[test]
-fn right_function() { do_test(Riemann::Right, 0.8800000000000001); }
+fn right_function() {
+    do_test(Riemann::Right, 0.8800000000000001);
+}
--- a/tests/misc.rs
+++ b/tests/misc.rs
@ -2,90 +2,90 @@
 /// Ensures [`decimal_round`] returns correct values
 #[test]
 fn decimal_round() {
-	use ytbn_graphing_software::decimal_round;
+    use ytbn_graphing_software::decimal_round;

-	assert_eq!(decimal_round(0.00001, 1), 0.0);
-	assert_eq!(decimal_round(0.00001, 2), 0.0);
-	assert_eq!(decimal_round(0.00001, 3), 0.0);
-	assert_eq!(decimal_round(0.00001, 4), 0.0);
-	assert_eq!(decimal_round(0.00001, 5), 0.00001);
+    assert_eq!(decimal_round(0.00001, 1), 0.0);
+    assert_eq!(decimal_round(0.00001, 2), 0.0);
+    assert_eq!(decimal_round(0.00001, 3), 0.0);
+    assert_eq!(decimal_round(0.00001, 4), 0.0);
+    assert_eq!(decimal_round(0.00001, 5), 0.00001);

-	assert_eq!(decimal_round(0.12345, 1), 0.1);
-	assert_eq!(decimal_round(0.12345, 2), 0.12);
-	assert_eq!(decimal_round(0.12345, 3), 0.123);
-	assert_eq!(decimal_round(0.12345, 4), 0.1235); // rounds up
-	assert_eq!(decimal_round(0.12345, 5), 0.12345);
+    assert_eq!(decimal_round(0.12345, 1), 0.1);
+    assert_eq!(decimal_round(0.12345, 2), 0.12);
+    assert_eq!(decimal_round(0.12345, 3), 0.123);
+    assert_eq!(decimal_round(0.12345, 4), 0.1235); // rounds up
+    assert_eq!(decimal_round(0.12345, 5), 0.12345);

-	assert_eq!(decimal_round(1.9, 0), 2.0);
-	assert_eq!(decimal_round(1.9, 1), 1.9);
+    assert_eq!(decimal_round(1.9, 0), 2.0);
+    assert_eq!(decimal_round(1.9, 1), 1.9);
 }
 */

 #[test]
 fn step_helper() {
-	use ytbn_graphing_software::step_helper;
+    use ytbn_graphing_software::step_helper;

-	assert_eq!(
-		step_helper(10, 2.0, 3.0),
-		vec![2.0, 5.0, 8.0, 11.0, 14.0, 17.0, 20.0, 23.0, 26.0, 29.0]
-	);
+    assert_eq!(
+        step_helper(10, 2.0, 3.0),
+        vec![2.0, 5.0, 8.0, 11.0, 14.0, 17.0, 20.0, 23.0, 26.0, 29.0]
+    );
 }

 /// Tests [`option_vec_printer`]
 #[test]
 fn option_vec_printer() {
-	use std::collections::HashMap;
-	use ytbn_graphing_software::option_vec_printer;
+    use std::collections::HashMap;
+    use ytbn_graphing_software::option_vec_printer;

-	let values_strings: HashMap<Vec<Option<&str>>, &str> = HashMap::from([
-		(vec![None], "[None]"),
-		(vec![Some("text"), None], "[text, None]"),
-		(vec![None, None], "[None, None]"),
-		(vec![Some("text1"), Some("text2")], "[text1, text2]"),
-	]);
+    let values_strings: HashMap<Vec<Option<&str>>, &str> = HashMap::from([
+        (vec![None], "[None]"),
+        (vec![Some("text"), None], "[text, None]"),
+        (vec![None, None], "[None, None]"),
+        (vec![Some("text1"), Some("text2")], "[text1, text2]"),
+    ]);

-	for (key, value) in values_strings {
-		assert_eq!(option_vec_printer(&key), value);
-	}
+    for (key, value) in values_strings {
+        assert_eq!(option_vec_printer(&key), value);
+    }

-	let values_nums = HashMap::from([
-		(vec![Some(10)], "[10]"),
-		(vec![Some(10), None], "[10, None]"),
-		(vec![None, Some(10)], "[None, 10]"),
-		(vec![Some(10), Some(100)], "[10, 100]"),
-	]);
+    let values_nums = HashMap::from([
+        (vec![Some(10)], "[10]"),
+        (vec![Some(10), None], "[10, None]"),
+        (vec![None, Some(10)], "[None, 10]"),
+        (vec![Some(10), Some(100)], "[10, 100]"),
+    ]);

-	for (key, value) in values_nums {
-		assert_eq!(option_vec_printer(&key), value);
-	}
+    for (key, value) in values_nums {
+        assert_eq!(option_vec_printer(&key), value);
+    }
 }

 #[test]
 fn hashed_storage() {
-	use ytbn_graphing_software::{hashed_storage_create, hashed_storage_read};
+    use ytbn_graphing_software::{hashed_storage_create, hashed_storage_read};

-	let commit = "abcdefeg".chars().map(|c| c as u8).collect::<Vec<u8>>();
-	let data = "really cool data"
-		.chars()
-		.map(|c| c as u8)
-		.collect::<Vec<u8>>();
-	let storage_tmp: [u8; 8] = commit
-		.as_slice()
-		.try_into()
-		.expect("cannot turn into [u8; 8]");
-	let storage = hashed_storage_create(storage_tmp, data.as_slice());
+    let commit = "abcdefeg".chars().map(|c| c as u8).collect::<Vec<u8>>();
+    let data = "really cool data"
+        .chars()
+        .map(|c| c as u8)
+        .collect::<Vec<u8>>();
+    let storage_tmp: [u8; 8] = commit
+        .as_slice()
+        .try_into()
+        .expect("cannot turn into [u8; 8]");
+    let storage = hashed_storage_create(storage_tmp, data.as_slice());

-	let read = hashed_storage_read(&storage);
-	assert_eq!(
-		read.map(|(a, b)| (a.to_vec(), b.to_vec())),
-		Some((commit.to_vec(), data.to_vec()))
-	);
+    let read = hashed_storage_read(&storage);
+    assert_eq!(
+        read.map(|(a, b)| (a.to_vec(), b.to_vec())),
+        Some((commit.to_vec(), data.to_vec()))
+    );
 }

 #[test]
 fn invalid_hashed_storage() {
-	use ytbn_graphing_software::hashed_storage_read;
-	assert_eq!(hashed_storage_read("aaaa"), None);
+    use ytbn_graphing_software::hashed_storage_read;
+    assert_eq!(hashed_storage_read("aaaa"), None);
 }

 // #[test]
@ -141,45 +141,46 @@ fn invalid_hashed_storage() {

 #[test]
 fn newtons_method() {
-	use parsing::BackingFunction;
-	use parsing::FlatExWrapper;
-	fn get_flatexwrapper(func: &str) -> FlatExWrapper {
-		let mut backing_func = BackingFunction::new(func).unwrap();
-		backing_func.get_function_derivative(0).clone()
-	}
+    use parsing::BackingFunction;
+    use parsing::FlatExWrapper;
+    use parsing::process_func_str;
+    fn get_flatexwrapper(func: &str) -> FlatExWrapper {
+        let backing_func = BackingFunction::new(&process_func_str(func)).unwrap();
+        backing_func.get_function_derivative(0).clone()
+    }

-	use ytbn_graphing_software::newtons_method;
+    use ytbn_graphing_software::newtons_method;

-	let data = newtons_method(
-		&get_flatexwrapper("x^2 -1"),
-		&get_flatexwrapper("2x"),
-		3.0,
-		&(0.0..5.0),
-		f64::EPSILON,
-	);
-	assert_eq!(data, Some(1.0));
+    let data = newtons_method(
+        &get_flatexwrapper("x^2 -1"),
+        &get_flatexwrapper("2x"),
+        3.0,
+        &(0.0..5.0),
+        f64::EPSILON,
+    );
+    assert_eq!(data, Some(1.0));

-	let data = newtons_method(
-		&get_flatexwrapper("sin(x)"),
-		&get_flatexwrapper("cos(x)"),
-		3.0,
-		&(2.95..3.18),
-		f64::EPSILON,
-	);
-	assert_eq!(data, Some(std::f64::consts::PI));
+    let data = newtons_method(
+        &get_flatexwrapper("sin(x)"),
+        &get_flatexwrapper("cos(x)"),
+        3.0,
+        &(2.95..3.18),
+        f64::EPSILON,
+    );
+    assert_eq!(data, Some(std::f64::consts::PI));
 }

 #[test]
 fn to_unicode_hash() {
-	use ytbn_graphing_software::to_unicode_hash;
-	assert_eq!(to_unicode_hash('\u{1f31e}'), "\\U1F31E");
+    use ytbn_graphing_software::to_unicode_hash;
+    assert_eq!(to_unicode_hash('\u{1f31e}'), "\\U1F31E");
 }

 #[test]
 fn to_chars_array() {
-	use ytbn_graphing_software::to_chars_array;
-	assert_eq!(
-		to_chars_array(vec!['\u{1f31e}', '\u{2d12c}']),
-		r"['\u{1f31e}', '\u{2d12c}']"
-	);
+    use ytbn_graphing_software::to_chars_array;
+    assert_eq!(
+        to_chars_array(vec!['\u{1f31e}', '\u{2d12c}']),
+        r"['\u{1f31e}', '\u{2d12c}']"
+    );
 }
--- a/tests/parsing.rs
+++ b/tests/parsing.rs
@ -3,292 +3,292 @@ use std::collections::HashMap;

 #[test]
 fn hashmap_gen_test() {
-	let data = ["time", "text", "test"];
-	let expect = vec![
-		("t", "Hint::Many(&[\"ime(\", \"ext(\", \"est(\"])"),
-		("te", "Hint::Many(&[\"xt(\", \"st(\"])"),
-		("tes", "Hint::Single(\"t(\")"),
-		("test", "Hint::Single(\"(\")"),
-		("tex", "Hint::Single(\"t(\")"),
-		("text", "Hint::Single(\"(\")"),
-		("ti", "Hint::Single(\"me(\")"),
-		("tim", "Hint::Single(\"e(\")"),
-		("time", "Hint::Single(\"(\")"),
-	];
+    let data = ["time", "text", "test"];
+    let expect = vec![
+        ("t", "Hint::Many(&[\"ime(\", \"ext(\", \"est(\"])"),
+        ("te", "Hint::Many(&[\"xt(\", \"st(\"])"),
+        ("tes", "Hint::Single(\"t(\")"),
+        ("test", "Hint::Single(\"(\")"),
+        ("tex", "Hint::Single(\"t(\")"),
+        ("text", "Hint::Single(\"(\")"),
+        ("ti", "Hint::Single(\"me(\")"),
+        ("tim", "Hint::Single(\"e(\")"),
+        ("time", "Hint::Single(\"(\")"),
+    ];

-	assert_eq!(
-		parsing::compile_hashmap(data.iter().map(|e| e.to_string()).collect()),
-		expect
-			.iter()
-			.map(|(a, b)| (a.to_string(), b.to_string()))
-			.collect::<Vec<(String, String)>>()
-	);
+    assert_eq!(
+        parsing::compile_hashmap(data.iter().map(|e| e.to_string()).collect()),
+        expect
+            .iter()
+            .map(|(a, b)| (a.to_string(), b.to_string()))
+            .collect::<Vec<(String, String)>>()
+    );
 }

 /// Returns if function with string `func_str` is valid after processing through [`process_func_str`]
 fn func_is_valid(func_str: &str) -> bool {
-	parsing::BackingFunction::new(&parsing::process_func_str(func_str)).is_ok()
+    parsing::BackingFunction::new(&parsing::process_func_str(func_str)).is_ok()
 }

 /// Used for testing: passes function to [`process_func_str`] before running [`test_func`]. if `expect_valid` == `true`, it expects no errors to be created.
 fn test_func_helper(func_str: &str, expect_valid: bool) {
-	let is_valid = func_is_valid(func_str);
-	let string = format!(
-		"function: {} (expected: {}, got: {})",
-		func_str, expect_valid, is_valid
-	);
+    let is_valid = func_is_valid(func_str);
+    let string = format!(
+        "function: {} (expected: {}, got: {})",
+        func_str, expect_valid, is_valid
+    );

-	if is_valid == expect_valid {
-		println!("{}", string);
-	} else {
-		panic!("{}", string);
-	}
+    if is_valid == expect_valid {
+        println!("{}", string);
+    } else {
+        panic!("{}", string);
+    }
 }

 /// Tests to make sure functions that are expected to succeed, succeed.
 #[test]
 fn test_expected() {
-	let values = HashMap::from([
-		("", true),
-		("x^2", true),
-		("2x", true),
-		("E^x", true),
-		("log10(x)", true),
-		("xxxxx", true),
-		("sin(x)", true),
-		("xsin(x)", true),
-		("sin(x)cos(x)", true),
-		("x/0", true),
-		("(x+1)(x-3)", true),
-		("cos(xsin(x)x)", true),
-		("(2x+1)x", true),
-		("(2x+1)pi", true),
-		("pi(2x+1)", true),
-		("pipipipipipix", true),
-		("e^sin(x)", true),
-		("E^sin(x)", true),
-		("e^x", true),
-		("x**2", true),
-		("a", false),
-		("log222(x)", false),
-		("abcdef", false),
-		("log10(x", false),
-		("x^a", false),
-		("sin(cos(x)))", false),
-		("0/0", false),
-	]);
+    let values = HashMap::from([
+        ("", true),
+        ("x^2", true),
+        ("2x", true),
+        ("E^x", true),
+        ("log10(x)", true),
+        ("xxxxx", true),
+        ("sin(x)", true),
+        ("xsin(x)", true),
+        ("sin(x)cos(x)", true),
+        ("x/0", true),
+        ("(x+1)(x-3)", true),
+        ("cos(xsin(x)x)", true),
+        ("(2x+1)x", true),
+        ("(2x+1)pi", true),
+        ("pi(2x+1)", true),
+        ("pipipipipipix", true),
+        ("e^sin(x)", true),
+        ("E^sin(x)", true),
+        ("e^x", true),
+        ("x**2", true),
+        ("a", false),
+        ("log222(x)", false),
+        ("abcdef", false),
+        ("log10(x", false),
+        ("x^a", false),
+        ("sin(cos(x)))", false),
+        ("0/0", false),
+    ]);

-	for (key, value) in values {
-		test_func_helper(key, value);
-	}
+    for (key, value) in values {
+        test_func_helper(key, value);
+    }
 }

 /// Helps with tests of [`process_func_str`]
 fn test_process_helper(input: &str, expected: &str) {
-	assert_eq!(&parsing::process_func_str(input), expected);
+    assert_eq!(&parsing::process_func_str(input), expected);
 }

 /// Tests to make sure my cursed function works as intended
 #[test]
 fn func_process_test() {
-	let values = HashMap::from([
-		("2x", "2*x"),
-		(")(", ")*("),
-		("(2", "(2"),
-		("log10(x)", "log10(x)"),
-		("log2(x)", "log2(x)"),
-		("pipipipipipi", "π*π*π*π*π*π"),
-		("10pi", "10*π"),
-		("pi10", "π*10"),
-		("10pi10", "10*π*10"),
-		("emax(x)", "e*max(x)"),
-		("pisin(x)", "π*sin(x)"),
-		("e^sin(x)", "e^sin(x)"),
-		("x**2", "x^2"),
-		("(x+1)(x-3)", "(x+1)*(x-3)"),
-	]);
+    let values = HashMap::from([
+        ("2x", "2*x"),
+        (")(", ")*("),
+        ("(2", "(2"),
+        ("log10(x)", "log10(x)"),
+        ("log2(x)", "log2(x)"),
+        ("pipipipipipi", "π*π*π*π*π*π"),
+        ("10pi", "10*π"),
+        ("pi10", "π*10"),
+        ("10pi10", "10*π*10"),
+        ("emax(x)", "e*max(x)"),
+        ("pisin(x)", "π*sin(x)"),
+        ("e^sin(x)", "e^sin(x)"),
+        ("x**2", "x^2"),
+        ("(x+1)(x-3)", "(x+1)*(x-3)"),
+    ]);

-	for (key, value) in values {
-		test_process_helper(key, value);
-	}
+    for (key, value) in values {
+        test_process_helper(key, value);
+    }

-	for func in SUPPORTED_FUNCTIONS.iter() {
-		let func_new = format!("{}(x)", func);
-		test_process_helper(&func_new, &func_new);
-	}
+    for func in SUPPORTED_FUNCTIONS.iter() {
+        let func_new = format!("{}(x)", func);
+        test_process_helper(&func_new, &func_new);
+    }
 }

 /// Tests to make sure hints are properly outputed based on input
 #[test]
 fn hints() {
-	let values = HashMap::from([
-		("", Hint::Single("x^2")),
-		("si", Hint::Many(&["n(", "nh(", "gnum("])),
-		("log", Hint::Many(&["2(", "10("])),
-		("cos", Hint::Many(&["(", "h("])),
-		("sin(", Hint::Single(")")),
-		("sqrt", Hint::Single("(")),
-		("ln(x)", Hint::None),
-		("ln(x)cos", Hint::Many(&["(", "h("])),
-		("ln(x)*cos", Hint::Many(&["(", "h("])),
-		("sin(cos", Hint::Many(&["(", "h("])),
-	]);
+    let values = HashMap::from([
+        ("", Hint::Single("x^2")),
+        ("si", Hint::Many(&["n(", "nh(", "gnum("])),
+        ("log", Hint::Many(&["2(", "10("])),
+        ("cos", Hint::Many(&["(", "h("])),
+        ("sin(", Hint::Single(")")),
+        ("sqrt", Hint::Single("(")),
+        ("ln(x)", Hint::None),
+        ("ln(x)cos", Hint::Many(&["(", "h("])),
+        ("ln(x)*cos", Hint::Many(&["(", "h("])),
+        ("sin(cos", Hint::Many(&["(", "h("])),
+    ]);

-	for (key, value) in values {
-		println!("{} + {:?}", key, value);
-		assert_eq!(parsing::generate_hint(key), &value);
-	}
+    for (key, value) in values {
+        println!("{} + {:?}", key, value);
+        assert_eq!(parsing::generate_hint(key), &value);
+    }
 }

 #[test]
 fn hint_to_string() {
-	let values = HashMap::from([
-		("x^2", Hint::Single("x^2")),
-		(
-			r#"["n(", "nh(", "gnum("]"#,
-			Hint::Many(&["n(", "nh(", "gnum("]),
-		),
-		(r#"["n("]"#, Hint::Many(&["n("])),
-		("None", Hint::None),
-	]);
+    let values = HashMap::from([
+        ("x^2", Hint::Single("x^2")),
+        (
+            r#"["n(", "nh(", "gnum("]"#,
+            Hint::Many(&["n(", "nh(", "gnum("]),
+        ),
+        (r#"["n("]"#, Hint::Many(&["n("])),
+        ("None", Hint::None),
+    ]);

-	for (key, value) in values {
-		assert_eq!(value.to_string(), key);
-	}
+    for (key, value) in values {
+        assert_eq!(value.to_string(), key);
+    }
 }

 #[test]
 fn invalid_function() {
-	use parsing::SplitType;
+    use parsing::SplitType;

-	SUPPORTED_FUNCTIONS
-		.iter()
-		.flat_map(|func1| {
-			SUPPORTED_FUNCTIONS
-				.iter()
-				.map(|func2| func1.to_string() + func2)
-				.collect::<Vec<String>>()
-		})
-		.filter(|func| !SUPPORTED_FUNCTIONS.contains(&func.as_str()))
-		.for_each(|key| {
-			let split = parsing::split_function(&key, SplitType::Multiplication);
+    SUPPORTED_FUNCTIONS
+        .iter()
+        .flat_map(|func1| {
+            SUPPORTED_FUNCTIONS
+                .iter()
+                .map(|func2| func1.to_string() + func2)
+                .collect::<Vec<String>>()
+        })
+        .filter(|func| !SUPPORTED_FUNCTIONS.contains(&func.as_str()))
+        .for_each(|key| {
+            let split = parsing::split_function(&key, SplitType::Multiplication);

-			if split.len() != 1 {
-				panic!("failed: {} (len: {}, split: {:?})", key, split.len(), split);
-			}
+            if split.len() != 1 {
+                panic!("failed: {} (len: {}, split: {:?})", key, split.len(), split);
+            }

-			let generated_hint = parsing::generate_hint(&key);
-			if generated_hint.is_none() {
-				println!("success: {}", key);
-			} else {
-				panic!("failed: {} (Hint: '{}')", key, generated_hint);
-			}
-		});
+            let generated_hint = parsing::generate_hint(&key);
+            if generated_hint.is_none() {
+                println!("success: {}", key);
+            } else {
+                panic!("failed: {} (Hint: '{}')", key, generated_hint);
+            }
+        });
 }

 #[test]
 fn split_function_multiplication() {
-	use parsing::SplitType;
+    use parsing::SplitType;

-	let values = HashMap::from([
-		("cos(x)", vec!["cos(x)"]),
-		("cos(", vec!["cos("]),
-		("cos(x)sin(x)", vec!["cos(x)", "sin(x)"]),
-		("aaaaaaaaaaa", vec!["aaaaaaaaaaa"]),
-		("emax(x)", vec!["e", "max(x)"]),
-		("x", vec!["x"]),
-		("xxx", vec!["x", "x", "x"]),
-		("sin(cos(x)x)", vec!["sin(cos(x)", "x)"]),
-		("sin(x)*cos(x)", vec!["sin(x)", "cos(x)"]),
-		("x*x", vec!["x", "x"]),
-		("10*10", vec!["10", "10"]),
-		("a1b2c3d4", vec!["a1b2c3d4"]),
-		("cos(sin(x)cos(x))", vec!["cos(sin(x)", "cos(x))"]),
-		("", Vec::new()),
-	]);
+    let values = HashMap::from([
+        ("cos(x)", vec!["cos(x)"]),
+        ("cos(", vec!["cos("]),
+        ("cos(x)sin(x)", vec!["cos(x)", "sin(x)"]),
+        ("aaaaaaaaaaa", vec!["aaaaaaaaaaa"]),
+        ("emax(x)", vec!["e", "max(x)"]),
+        ("x", vec!["x"]),
+        ("xxx", vec!["x", "x", "x"]),
+        ("sin(cos(x)x)", vec!["sin(cos(x)", "x)"]),
+        ("sin(x)*cos(x)", vec!["sin(x)", "cos(x)"]),
+        ("x*x", vec!["x", "x"]),
+        ("10*10", vec!["10", "10"]),
+        ("a1b2c3d4", vec!["a1b2c3d4"]),
+        ("cos(sin(x)cos(x))", vec!["cos(sin(x)", "cos(x))"]),
+        ("", Vec::new()),
+    ]);

-	for (key, value) in values {
-		assert_eq!(
-			parsing::split_function(key, SplitType::Multiplication),
-			value
-		);
-	}
+    for (key, value) in values {
+        assert_eq!(
+            parsing::split_function(key, SplitType::Multiplication),
+            value
+        );
+    }
 }

 #[test]
 fn split_function_terms() {
-	use parsing::SplitType;
+    use parsing::SplitType;

-	let values = HashMap::from([
-		(
-			"cos(sin(x)cos(x))",
-			vec!["cos(", "sin(", "x)", "cos(", "x))"],
-		),
-		("", Vec::new()),
-	]);
+    let values = HashMap::from([
+        (
+            "cos(sin(x)cos(x))",
+            vec!["cos(", "sin(", "x)", "cos(", "x))"],
+        ),
+        ("", Vec::new()),
+    ]);

-	for (key, value) in values {
-		assert_eq!(parsing::split_function(key, SplitType::Term), value);
-	}
+    for (key, value) in values {
+        assert_eq!(parsing::split_function(key, SplitType::Term), value);
+    }
 }

 #[test]
 fn hint_tests() {
-	{
-		let hint = Hint::None;
-		assert!(hint.is_none());
-		assert!(!hint.is_some());
-		assert!(!hint.is_single());
-	}
+    {
+        let hint = Hint::None;
+        assert!(hint.is_none());
+        assert!(!hint.is_some());
+        assert!(!hint.is_single());
+    }

-	{
-		let hint = Hint::Single("");
-		assert!(!hint.is_none());
-		assert!(hint.is_some());
-		assert!(hint.is_single());
-	}
+    {
+        let hint = Hint::Single("");
+        assert!(!hint.is_none());
+        assert!(hint.is_some());
+        assert!(hint.is_single());
+    }

-	{
-		let hint = Hint::Many(&[""]);
-		assert!(!hint.is_none());
-		assert!(hint.is_some());
-		assert!(!hint.is_single());
-	}
+    {
+        let hint = Hint::Many(&[""]);
+        assert!(!hint.is_none());
+        assert!(hint.is_some());
+        assert!(!hint.is_single());
+    }
 }

 #[test]
 fn get_last_term() {
-	let values = HashMap::from([
-		("cos(x)", "x)"),
-		("cos(", "cos("),
-		("aaaaaaaaaaa", "aaaaaaaaaaa"),
-		("x", "x"),
-		("xxx", "x"),
-		("x*x", "x"),
-		("10*10", "10"),
-		("sin(cos", "cos"),
-		("exp(cos(exp(sin", "sin"),
-	]);
+    let values = HashMap::from([
+        ("cos(x)", "x)"),
+        ("cos(", "cos("),
+        ("aaaaaaaaaaa", "aaaaaaaaaaa"),
+        ("x", "x"),
+        ("xxx", "x"),
+        ("x*x", "x"),
+        ("10*10", "10"),
+        ("sin(cos", "cos"),
+        ("exp(cos(exp(sin", "sin"),
+    ]);

-	for (key, value) in values {
-		assert_eq!(
-			parsing::get_last_term(key.chars().collect::<Vec<char>>().as_slice()),
-			Some(value.to_owned())
-		);
-	}
+    for (key, value) in values {
+        assert_eq!(
+            parsing::get_last_term(key.chars().collect::<Vec<char>>().as_slice()),
+            Some(value.to_owned())
+        );
+    }
 }

 #[test]
 fn hint_accessor() {
-	assert_eq!(Hint::Single("hint").many(), None);
-	assert_eq!(Hint::Single("hint").single(), Some("hint"));
+    assert_eq!(Hint::Single("hint").many(), None);
+    assert_eq!(Hint::Single("hint").single(), Some("hint"));

-	assert_eq!(Hint::Many(&["hint", "hint2"]).single(), None);
-	assert_eq!(
-		Hint::Many(&["hint", "hint2"]).many(),
-		Some(["hint", "hint2"].as_slice())
-	);
+    assert_eq!(Hint::Many(&["hint", "hint2"]).single(), None);
+    assert_eq!(
+        Hint::Many(&["hint", "hint2"]).many(),
+        Some(["hint", "hint2"].as_slice())
+    );

-	assert_eq!(Hint::None.single(), None);
-	assert_eq!(Hint::None.many(), None);
+    assert_eq!(Hint::None.single(), None);
+    assert_eq!(Hint::None.many(), None);
 }
Author	SHA1	Message	Date
Simon Gardling	e005675bb8	nix + web stuff Some checks failed CI / Check (push) Has been cancelled Details CI / Tests (push) Has been cancelled Details	2025-12-02 23:44:36 -05:00
Simon Gardling	e62be3080f	remove shell scripts	2025-12-02 23:13:57 -05:00
Simon Gardling	d95b29fb7f	implement intesections + misc function options	2025-12-02 23:10:43 -05:00
Simon Gardling	bccb19cecc	cargo clippy + fmt	2025-12-02 22:41:44 -05:00
Simon Gardling	dd377c1659	update EVERYTHING and rebase egui and depdencies	2025-12-02 22:40:08 -05:00
Simon Gardling	33847acd53	nix: add shell.nix	2025-12-02 22:39:53 -05:00
Simon Gardling	9ad115729f	update dependencies	2024-01-26 00:15:31 -05:00
Simon Gardling	9b53c63070	update dependencies	2023-12-20 07:00:24 +01:00
Simon Gardling	57c31977e0	cleanup	2023-12-11 20:01:14 -05:00
Simon Gardling	625bfae3be	stuff	2023-12-08 10:12:27 -05:00