egui-plotter

simple to use utilties for integrating plotter into egui

Usage

This crate can be used by adding egui-plotter to the dependencies in your project's Cargo.toml.

[dependencies]
egui-plotter = "0.1.0"

It is also heavily recommended you disable feathering in your egui context, as not only does it slow things down but it causes artifacts with certain plots.

See line 24 example below to see how to disable feathering.

Examples

Here's a simple plotter example being run on native eframe. Derived from eframe and plotters.

use eframe::egui::{self, CentralPanel, Visuals};
use egui_plotter::EguiBackend;
use plotters::prelude::*;

fn main() {
    let native_options = eframe::NativeOptions::default();
    eframe::run_native("My egui App", native_options, Box::new(|cc| Box::new(MyEguiApp::new(cc)))).unwrap();
}

#[derive(Default)]
struct MyEguiApp {}

impl MyEguiApp {
    fn new(cc: &eframe::CreationContext<'_>) -> Self {
       // Disable feathering as it causes artifacts
       let context = &cc.egui_ctx;
       
       context.tessellation_options_mut(|tess_options| {
           tess_options.feathering = false;
       });

       // Also enable light mode
       context.set_visuals(Visuals::light());

        Self::default()
    }
}

impl eframe::App for MyEguiApp {
    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
        CentralPanel::default().show(ctx, |ui| {
            let root = EguiBackend::new(ui).into_drawing_area();
            root.fill(&WHITE).unwrap();
            let mut chart = ChartBuilder::on(&root)
                .caption("y=x^2", ("sans-serif", 50).into_font())
                .margin(5)
                .x_label_area_size(30)
                .y_label_area_size(30)
                .build_cartesian_2d(-1f32..1f32, -0.1f32..1f32).unwrap();

            chart.configure_mesh().draw().unwrap();

            chart
                .draw_series(LineSeries::new(
                    (-50..=50).map(|x| x as f32 / 50.0).map(|x| (x, x * x)),
                    &RED,
                )).unwrap()
                .label("y = x^2")
                .legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &RED));

            chart
                .configure_series_labels()
                .background_style(&WHITE.mix(0.8))
                .border_style(&BLACK)
                .draw().unwrap();

            root.present().unwrap();
        });
    }
}