saving images

Cargo.toml

@@ -10,4 +10,6 @@ eframe = "0.29.1"
 egui = "0.29.1"
 egui-file-dialog = "0.7.0"
 egui_plot = "0.29.0"
+image = "0.25.4"
+plotters = "0.3.3"
 rand = "0.8.5"

src/gui/views.rs

@@ -19,7 +19,7 @@ pub fn display_plot<'a>(mut circles: Vec<crate::Circle>, circle_length: &'a usiz
 
 
 pub fn display_gui() -> Display<'static> {
-    Box::new(move |ui| {
+    Box::new(move |_ui| {
         //TODO: UI (on unfocus update values)
         // Message Content input
         // start shift input

src/lib.rs

@@ -20,10 +20,11 @@ pub fn run() -> anyhow::Result<()> {
     }
 }
 
+
 fn encode(message: &mut crate::Message, circle_length: &mut usize, output: crate::OutputMode) -> anyhow::Result<()> {
     match output {
         crate::OutputMode::Display => crate::gui::gui(message, circle_length, false),
-        crate::OutputMode::Save { path } => Ok(()), //TODO: Create plot and save
+        crate::OutputMode::Save { path } => save(&path, message, circle_length),     
     }
 }
 
@@ -69,5 +70,6 @@ pub use encoding::encrypt_message;
 pub use gui::Error;
 pub use message::Message;
 pub use plotting::plot;
+pub use plotting::save;
 
 

src/plotting.rs

@@ -1,4 +1,4 @@
-use std::f64::{self, consts::PI};
+use std::{f64::{self, consts::PI}, path::PathBuf};
 
 pub fn plot(ui: &mut egui::Ui, circles: &mut Vec<crate::Circle>, num_points: &usize, line_colors: &Vec<egui::Color32>) {
     egui_plot::Plot::new("Encoded Message")
@@ -26,6 +26,39 @@ pub fn plot(ui: &mut egui::Ui, circles: &mut Vec<crate::Circle>, num_points: &us
     });
 }
 
+
+pub fn save(path: &PathBuf, message: &mut crate::Message, circle_length: &usize) -> anyhow::Result<()> { //TODO: Add line_colors 
+    use plotters::prelude::*;
+    let root  = BitMapBackend::new(path, (1000,1000)).into_drawing_area();
+    root.fill(&WHITE)?;
+
+    let mut circles = crate::encrypt_message(message, circle_length);
+    let length = (circles.len() as f64) + 1.0;
+
+    let mut chart = ChartBuilder::on(&root)
+        .margin(5)
+        .build_cartesian_2d(-length..length, -length..length)?;
+
+    circles.iter_mut().enumerate().for_each(|(count, circle)| {
+        let peak_values = match count {
+            count if count % 2 == 0 => crate::circle_to_points(circle),
+            _ => {
+                circle.reverse();
+                crate::circle_to_points(circle)
+            },
+        };
+
+        let points: Vec<(f64, f64)> = gaussian_distribution(circle_length, &peak_values, &(count as f64)).points().iter()
+            .map(|point| {
+                (point.x, point.y)
+            }).collect();
+
+        chart.draw_series(LineSeries::new(points, &RED)).unwrap();
+    });
+    root.present()?;
+        Ok(())
+}
+
 fn gaussian_distribution(num_points: &usize, peak_values: &Vec<f64>, offset: &f64) -> egui_plot::PlotPoints {
     let mut radii: Vec<f64> = vec![1.0; *num_points];
     let num_peaks = peak_values.len();