henad-app 0.3.0

Desktop and web app for Henad, a parallel agent-based modelling engine.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

//! Latest stat values as a table. The [`charts`](crate::ui::charts) module draws their time series.

use crate::icons::material_design_icons::{MDI_ARROW_TOP_RIGHT_THIN, MDI_CHART_HISTOGRAM, MDI_CIRCLE_SMALL};
use crate::state::AppState;
use henad_core::view::StatValue;

pub fn stats_ui(ui: &mut egui::Ui, app: &AppState) {
    let Some(snap) = &app.snapshot else {
        ui.label("No simulation loaded.");
        return;
    };

    crate::ui::kv_grid(ui, "stats_grid").show(ui, |ui, rows| {
        for stat in &snap.stats {
            let [r, g, b, _] = stat.color;
            let color = egui::Color32::from_rgb(r, g, b);
            ui.colored_label(color, stat.label);
            ui.horizontal(|ui| {
                let (text, data_type) = match &stat.value {
                    StatValue::Scalar(v) => (format_scalar(*v), "Scalar"),
                    StatValue::Vector2D { x, y } => {
                        let mag = x.hypot(*y);
                        (format!("({x:.1}, {y:.1}) |{mag:.1}|"), "Vector2D")
                    }
                    StatValue::Histogram { counts, .. } => {
                        let total: u64 = counts.iter().sum();
                        (format!("n={total}"), "Histogram")
                    }
                };

                let icon = match &stat.value {
                    StatValue::Scalar(_) => MDI_CIRCLE_SMALL,
                    StatValue::Vector2D { .. } => MDI_ARROW_TOP_RIGHT_THIN,
                    StatValue::Histogram { .. } => MDI_CHART_HISTOGRAM,
                };
                ui.colored_label(egui::Color32::GRAY, icon).on_hover_text(data_type);
                ui.colored_label(color, text);
            });
            rows.end_row(ui);
        }
    });
}

/// Formats a whole value without decimals, and any other value with up to three decimals.
fn format_scalar(v: f64) -> String {
    if v.fract() == 0.0 {
        format!("{v:.0}")
    } else {
        let text = format!("{v:.3}");
        text.trim_end_matches('0').trim_end_matches('.').to_owned()
    }
}