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
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179

use std::collections::HashSet;

use abstutil::prettyprint_usize;
use geom::{Circle, Distance, Pt2D, Time};
use map_gui::tools::{make_heatmap, HeatmapOptions};
use sim::PersonState;
use widgetry::{
    Btn, Checkbox, Color, Drawable, EventCtx, GeomBatch, GfxCtx, HorizontalAlignment, Line,
    Outcome, Panel, VerticalAlignment, Widget,
};

use crate::app::App;
use crate::layer::{Layer, LayerOutcome};

// TODO Disable drawing unzoomed agents... or alternatively, implement this by asking Sim to
// return this kind of data instead!
pub struct PopulationMap {
    time: Time,
    opts: Options,
    draw: Drawable,
    panel: Panel,
}

impl Layer for PopulationMap {
    fn name(&self) -> Option<&'static str> {
        Some("population map")
    }
    fn event(
        &mut self,
        ctx: &mut EventCtx,
        app: &mut App,
        minimap: &Panel,
    ) -> Option<LayerOutcome> {
        if app.primary.sim.time() != self.time {
            let mut new = PopulationMap::new(ctx, app, self.opts.clone());
            new.panel.align_above(ctx, minimap);
            new.panel.restore(ctx, &self.panel);
            *self = new;
        }

        self.panel.align_above(ctx, minimap);
        match self.panel.event(ctx) {
            Outcome::Clicked(x) => match x.as_ref() {
                "close" => {
                    return Some(LayerOutcome::Close);
                }
                _ => unreachable!(),
            },
            _ => {
                let new_opts = self.options();
                if self.opts != new_opts {
                    *self = PopulationMap::new(ctx, app, new_opts);
                    self.panel.align_above(ctx, minimap);
                }
            }
        }
        None
    }
    fn draw(&self, g: &mut GfxCtx, app: &App) {
        self.panel.draw(g);
        if g.canvas.cam_zoom < app.opts.min_zoom_for_detail {
            g.redraw(&self.draw);
        }
    }
    fn draw_minimap(&self, g: &mut GfxCtx) {
        g.redraw(&self.draw);
    }
}

impl PopulationMap {
    pub fn new(ctx: &mut EventCtx, app: &App, opts: Options) -> PopulationMap {
        let mut pts = Vec::new();
        // Faster to grab all agent positions than individually map trips to agent positions.
        for a in app.primary.sim.get_unzoomed_agents(&app.primary.map) {
            if a.person.is_some() {
                pts.push(a.pos);
            }
        }

        // Many people are probably in the same building. If we're building a heatmap, we
        // absolutely care about these repeats! If we're just drawing the simple dot map, avoid
        // drawing repeat circles.
        let mut seen_bldgs = HashSet::new();
        let mut repeat_pts = Vec::new();
        for person in app.primary.sim.get_all_people() {
            match person.state {
                // Already covered above
                PersonState::Trip(_) => {}
                PersonState::Inside(b) => {
                    let pt = app.primary.map.get_b(b).polygon.center();
                    if seen_bldgs.contains(&b) {
                        repeat_pts.push(pt);
                    } else {
                        seen_bldgs.insert(b);
                        pts.push(pt);
                    }
                }
                PersonState::OffMap => {}
            }
        }

        let mut batch = GeomBatch::new();
        let legend = if let Some(ref o) = opts.heatmap {
            pts.extend(repeat_pts);
            Some(make_heatmap(
                ctx,
                &mut batch,
                app.primary.map.get_bounds(),
                pts,
                o,
            ))
        } else {
            // It's quite silly to produce triangles for the same circle over and over again. ;)
            let circle = Circle::new(Pt2D::new(0.0, 0.0), Distance::meters(10.0)).to_polygon();
            for pt in pts {
                batch.push(Color::RED.alpha(0.8), circle.translate(pt.x(), pt.y()));
            }
            None
        };
        let controls = make_controls(ctx, app, &opts, legend);
        PopulationMap {
            time: app.primary.sim.time(),
            opts,
            draw: ctx.upload(batch),
            panel: controls,
        }
    }

    fn options(&self) -> Options {
        let heatmap = if self.panel.is_checked("Show heatmap") {
            Some(HeatmapOptions::from_controls(&self.panel))
        } else {
            None
        };
        Options { heatmap }
    }
}

#[derive(Clone, PartialEq)]
pub struct Options {
    // If None, just a dot map
    pub heatmap: Option<HeatmapOptions>,
}

fn make_controls(ctx: &mut EventCtx, app: &App, opts: &Options, legend: Option<Widget>) -> Panel {
    let (total_ppl, ppl_in_bldg, ppl_off_map) = app.primary.sim.num_ppl();

    let mut col = vec![
        Widget::row(vec![
            Widget::draw_svg(ctx, "system/assets/tools/layers.svg"),
            Line(format!("Population: {}", prettyprint_usize(total_ppl))).draw(ctx),
            Btn::close(ctx),
        ]),
        Widget::row(vec![
            Widget::row(vec![
                Widget::draw_svg(ctx, "system/assets/tools/home.svg"),
                Line(prettyprint_usize(ppl_in_bldg)).small().draw(ctx),
            ]),
            Line(format!("Off-map: {}", prettyprint_usize(ppl_off_map)))
                .small()
                .draw(ctx),
        ])
        .centered(),
    ];

    col.push(Checkbox::switch(
        ctx,
        "Show heatmap",
        None,
        opts.heatmap.is_some(),
    ));
    if let Some(ref o) = opts.heatmap {
        col.extend(o.to_controls(ctx, legend.unwrap()));
    }

    Panel::new(Widget::col(col))
        .aligned(HorizontalAlignment::Right, VerticalAlignment::Center)
        .build(ctx)
}