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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196

use geom::Distance;
use widgetry::mapspace::World;
use widgetry::{
    EventCtx, GeomBatch, GfxCtx, Key, Outcome, Panel, State, Text, TextExt, Toggle, Widget,
};

use super::auto::Heuristic;
use super::per_neighborhood::{FilterableObj, Tab, TakeNeighborhood};
use super::Neighborhood;
use crate::app::{App, Transition};

pub struct Viewer {
    panel: Panel,
    neighborhood: Neighborhood,
    world: World<FilterableObj>,
}

impl TakeNeighborhood for Viewer {
    fn take_neighborhood(self) -> Neighborhood {
        self.neighborhood
    }
}

impl Viewer {
    pub fn new_state(
        ctx: &mut EventCtx,
        app: &App,
        neighborhood: Neighborhood,
    ) -> Box<dyn State<App>> {
        let panel = Tab::Connectivity
            .panel_builder(
                ctx,
                app,
                Widget::col(vec![
                    Widget::row(vec![
                        "Draw traffic cells as".text_widget(ctx).centered_vert(),
                        Toggle::choice(ctx, "draw cells", "areas", "streets", Key::D, true),
                    ]),
                    Text::new().into_widget(ctx).named("warnings"),
                    Widget::row(vec![
                        Widget::dropdown(
                            ctx,
                            "heuristic",
                            // TODO Session state
                            Heuristic::OnlyOneBorder,
                            Heuristic::choices(),
                        ),
                        ctx.style()
                            .btn_outline
                            .text("Automatically stop rat-runs")
                            .hotkey(Key::A)
                            .build_def(ctx),
                    ]),
                ]),
            )
            .build(ctx);

        let mut viewer = Viewer {
            panel,
            neighborhood,
            world: World::unbounded(),
        };
        viewer.neighborhood_changed(ctx, app);
        Box::new(viewer)
    }

    fn neighborhood_changed(&mut self, ctx: &mut EventCtx, app: &App) {
        self.world = make_world(
            ctx,
            app,
            &self.neighborhood,
            self.panel.is_checked("draw cells"),
        );
        let disconnected_cells = self
            .neighborhood
            .cells
            .iter()
            .filter(|c| c.is_disconnected())
            .count();
        let warning = if disconnected_cells == 0 {
            String::new()
        } else {
            format!("{} cells are totally disconnected", disconnected_cells)
        };
        self.panel
            .replace(ctx, "warnings", warning.text_widget(ctx));
    }
}

impl State<App> for Viewer {
    fn event(&mut self, ctx: &mut EventCtx, app: &mut App) -> Transition {
        match self.panel.event(ctx) {
            Outcome::Clicked(x) => {
                if x == "Automatically stop rat-runs" {
                    ctx.loading_screen("automatically filter a neighborhood", |ctx, timer| {
                        let heuristic: Heuristic = self.panel.dropdown_value("heuristic");
                        heuristic.apply(ctx, app, &self.neighborhood, timer);
                    });
                    self.neighborhood =
                        Neighborhood::new(ctx, app, self.neighborhood.orig_perimeter.clone());
                    self.neighborhood_changed(ctx, app);
                    return Transition::Keep;
                }

                return Tab::Connectivity
                    .handle_action::<Viewer>(ctx, app, x.as_ref())
                    .unwrap();
            }
            Outcome::Changed(x) => {
                if x == "streets" || x == "areas" {
                    self.world = make_world(
                        ctx,
                        app,
                        &self.neighborhood,
                        self.panel.is_checked("draw cells"),
                    );
                }
            }
            _ => {}
        }

        let world_outcome = self.world.event(ctx);
        if super::per_neighborhood::handle_world_outcome(ctx, app, world_outcome) {
            // TODO The cell coloring changes quite spuriously just by toggling a filter, even when
            // it doesn't matter
            self.neighborhood =
                Neighborhood::new(ctx, app, self.neighborhood.orig_perimeter.clone());
            self.neighborhood_changed(ctx, app);
        }

        Transition::Keep
    }

    fn draw(&self, g: &mut GfxCtx, app: &App) {
        self.panel.draw(g);
        g.redraw(&self.neighborhood.fade_irrelevant);
        self.world.draw(g);
        self.neighborhood.draw_filters.draw(g);
        // TODO Since we cover such a small area, treating multiple segments of one road as the
        // same might be nice. And we should seed the quadtree with the locations of filters and
        // arrows, possibly.
        if g.canvas.is_unzoomed() {
            self.neighborhood.labels.draw(g, app);
        }
    }
}

fn make_world(
    ctx: &mut EventCtx,
    app: &App,
    neighborhood: &Neighborhood,
    draw_cells_as_areas: bool,
) -> World<FilterableObj> {
    let map = &app.primary.map;
    let mut world = World::bounded(map.get_bounds());

    super::per_neighborhood::populate_world(ctx, app, neighborhood, &mut world, |id| id, 0);

    let (draw_areas, cell_colors) = super::draw_cells::draw_cells(map, neighborhood);
    if draw_cells_as_areas {
        world.draw_master_batch(ctx, draw_areas);
    } else {
        let mut draw = GeomBatch::new();
        let mut debug_cell_borders = GeomBatch::new();
        for (idx, cell) in neighborhood.cells.iter().enumerate() {
            let color = cell_colors[idx].alpha(0.9);
            for (r, interval) in &cell.roads {
                let road = map.get_r(*r);
                draw.push(
                    color,
                    road.center_pts
                        .exact_slice(interval.start, interval.end)
                        .make_polygons(road.get_width()),
                );
            }
            for i in
                crate::common::intersections_from_roads(&cell.roads.keys().cloned().collect(), map)
            {
                draw.push(color, map.get_i(i).polygon.clone());
            }
            // Draw the cell borders as outlines, for debugging. (Later, we probably want some kind
            // of arrow styling)
            for i in &cell.borders {
                if let Ok(p) = map.get_i(*i).polygon.to_outline(Distance::meters(2.0)) {
                    debug_cell_borders.push(color.alpha(1.0), p);
                }
            }
        }
        draw.append(debug_cell_borders);
        world.draw_master_batch(ctx, draw);
    }

    world.initialize_hover(ctx);

    world
}