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

use std::cell::RefCell;

use geom::{Distance, Polygon, Pt2D};
use map_model::{Building, LaneType, Map, Road, RoadID, NORMAL_LANE_THICKNESS};
use widgetry::{Color, Drawable, GeomBatch, GfxCtx, Line, Prerender, Text};

use crate::colors::ColorSchemeChoice;
use crate::options::CameraAngle;
use crate::render::{DrawOptions, Renderable};
use crate::{AppLike, ID};

pub struct DrawRoad {
    pub id: RoadID,
    zorder: isize,

    draw: RefCell<Option<Drawable>>,
}

impl DrawRoad {
    pub fn new(r: &Road) -> DrawRoad {
        DrawRoad {
            id: r.id,
            zorder: r.zorder,
            draw: RefCell::new(None),
        }
    }

    pub fn render_center_line(&self, app: &dyn AppLike) -> GeomBatch {
        let r = app.map().get_r(self.id);
        let center_line_color = if r.is_private() {
            app.cs().road_center_line.lerp(app.cs().private_road, 0.5)
        } else {
            app.cs().road_center_line
        };

        let mut batch = GeomBatch::new();

        // Draw a center line every time two driving/bike/bus lanes of opposite direction are
        // adjacent.
        let mut width = Distance::ZERO;
        for pair in r.lanes.windows(2) {
            width += pair[0].width;
            if pair[0].dir != pair[1].dir
                && pair[0].lane_type.is_for_moving_vehicles()
                && pair[1].lane_type.is_for_moving_vehicles()
            {
                let pl = r.get_left_side().must_shift_right(width);
                batch.extend(
                    center_line_color,
                    pl.dashed_lines(
                        Distance::meters(0.25),
                        Distance::meters(2.0),
                        Distance::meters(1.0),
                    ),
                );
            }
        }

        batch
    }

    pub fn render<P: AsRef<Prerender>>(&self, prerender: &P, app: &dyn AppLike) -> GeomBatch {
        let prerender = prerender.as_ref();
        let r = app.map().get_r(self.id);
        let center_line_color = if r.is_private() {
            app.cs().road_center_line.lerp(app.cs().private_road, 0.5)
        } else {
            app.cs().road_center_line
        };

        let mut batch = self.render_center_line(app);

        // Draw the label
        if !r.is_light_rail() {
            let name = r.get_name(app.opts().language.as_ref());
            if r.center_pts.length() >= Distance::meters(30.0) && name != "???" {
                // TODO If it's definitely straddling bus/bike lanes, change the color? Or
                // even easier, just skip the center lines?
                let bg = if r.is_private() {
                    app.cs()
                        .zoomed_road_surface(LaneType::Driving, r.get_rank())
                        .lerp(app.cs().private_road, 0.5)
                } else {
                    app.cs()
                        .zoomed_road_surface(LaneType::Driving, r.get_rank())
                };

                if false {
                    // TODO Not ready yet
                    batch.append(Line(name).fg(center_line_color).render_curvey(
                        prerender,
                        &r.center_pts,
                        0.1,
                    ));
                } else {
                    let txt = Text::from(Line(name).fg(center_line_color)).bg(bg);
                    let (pt, angle) = r.center_pts.must_dist_along(r.center_pts.length() / 2.0);
                    batch.append(
                        txt.render_autocropped(prerender)
                            .scale(0.1)
                            .centered_on(pt)
                            .rotate(angle.reorient()),
                    );
                }
            }
        }

        // Driveways of connected buildings. These are grouped by road to limit what has to be
        // recalculated when road edits cause buildings to re-snap.
        for b in app.map().road_to_buildings(self.id) {
            draw_building_driveway(app, app.map().get_b(*b), &mut batch);
        }

        batch
    }

    pub fn clear_rendering(&mut self) {
        *self.draw.borrow_mut() = None;
    }
}

impl Renderable for DrawRoad {
    fn get_id(&self) -> ID {
        ID::Road(self.id)
    }

    fn draw(&self, g: &mut GfxCtx, app: &dyn AppLike, _: &DrawOptions) {
        let mut draw = self.draw.borrow_mut();
        if draw.is_none() {
            *draw = Some(g.upload(self.render(g, app)));
        }
        g.redraw(draw.as_ref().unwrap());
    }

    fn get_outline(&self, map: &Map) -> Polygon {
        // Highlight the entire thing, not just an outline
        map.get_r(self.id).get_thick_polygon()
    }

    fn contains_pt(&self, pt: Pt2D, map: &Map) -> bool {
        map.get_r(self.id).get_thick_polygon().contains_pt(pt)
    }

    fn get_zorder(&self) -> isize {
        self.zorder
    }
}

fn draw_building_driveway(app: &dyn AppLike, bldg: &Building, batch: &mut GeomBatch) {
    if app.opts().camera_angle == CameraAngle::Abstract || !app.opts().show_building_driveways {
        return;
    }

    // Trim the driveway away from the sidewalk's center line, so that it doesn't overlap.  For
    // now, this cleanup is visual; it doesn't belong in the map_model layer.
    let orig_pl = &bldg.driveway_geom;
    let driveway = orig_pl
        .slice(
            Distance::ZERO,
            orig_pl.length() - app.map().get_l(bldg.sidewalk()).width / 2.0,
        )
        .map(|(pl, _)| pl)
        .unwrap_or_else(|_| orig_pl.clone());
    if driveway.length() > Distance::meters(0.1) {
        batch.push(
            if app.opts().color_scheme == ColorSchemeChoice::NightMode {
                Color::hex("#4B4B4B")
            } else {
                app.cs().zoomed_road_surface(
                    LaneType::Sidewalk,
                    app.map().get_parent(bldg.sidewalk()).get_rank(),
                )
            },
            driveway.make_polygons(NORMAL_LANE_THICKNESS),
        );
    }
}