Show extents in the world view

src/window/vip/utils.rs

@@ -222,12 +222,12 @@ impl Widget for CharacterGrid<'_> {
             for x in (1..grid_width_cells).map(|i| (i as f32) * cell_size) {
                 let p1 = (res.rect.min.x + x, res.rect.min.y).into();
                 let p2 = (res.rect.min.x + x, res.rect.max.y).into();
-                painter.line(vec![p1, p2], stroke);
+                painter.line_segment([p1, p2], stroke);
             }
             for y in (1..grid_height_cells).map(|i| (i as f32) * cell_size) {
                 let p1 = (res.rect.min.x, res.rect.min.y + y).into();
                 let p2 = (res.rect.max.x, res.rect.min.y + y).into();
-                painter.line(vec![p1, p2], stroke);
+                painter.line_segment([p1, p2], stroke);
             }
         }
         if let Some(selected) = self.selected {

src/window/vip/world.rs

@@ -33,6 +33,7 @@ pub struct WorldWindow {
     index: usize,
     param_index: usize,
     generic_palette: bool,
+    show_extents: bool,
     params: ImageParams<WorldParams>,
     scale: f32,
 }
@@ -57,6 +58,7 @@ impl WorldWindow {
             index: params.index,
             param_index: 0,
             generic_palette: params.generic_palette,
+            show_extents: false,
             params,
             scale: 1.0,
         }
@@ -413,6 +415,7 @@ impl WorldWindow {
                     ui.add(slider);
                 });
                 ui.checkbox(&mut self.generic_palette, "Generic palette");
+                ui.checkbox(&mut self.show_extents, "Show extents");
             });
         });
         self.params.write(WorldParams {
@@ -426,7 +429,82 @@ impl WorldWindow {
         let image = Image::new("vip://world")
             .fit_to_original_size(self.scale)
             .texture_options(TextureOptions::NEAREST);
-        ui.add(image);
+        let res = ui.add(image);
+        if self.show_extents {
+            let world = {
+                let worlds = self.worlds.borrow();
+                let data = worlds.read(self.index);
+                World::parse(&data)
+            };
+            if world.header.mode == WorldMode::Object {
+                return;
+            }
+
+            let lx1 = (world.dst_x - world.dst_parallax) as f32 * self.scale;
+            let lx2 = lx1 + world.width as f32 * self.scale;
+            let rx1 = (world.dst_x + world.dst_parallax) as f32 * self.scale;
+            let rx2 = rx1 + world.width as f32 * self.scale;
+            let y1 = world.dst_y as f32 * self.scale;
+            let y2 = y1 + world.height as f32 * self.scale;
+
+            let left_color = self.params.left_color;
+            let right_color = self.params.right_color;
+            let both_color = Color32::from_rgb(
+                left_color.r() + right_color.r(),
+                left_color.g() + right_color.g(),
+                left_color.b() + right_color.b(),
+            );
+
+            let painter = ui.painter();
+            let draw_rect = |x1: f32, x2: f32, color: Color32| {
+                painter.line(
+                    vec![
+                        res.rect.min + (x1, y1).into(),
+                        res.rect.min + (x2, y1).into(),
+                        res.rect.min + (x2, y2).into(),
+                        res.rect.min + (x1, y2).into(),
+                        res.rect.min + (x1, y1).into(),
+                    ],
+                    (2.0, color),
+                )
+            };
+
+            match (world.header.lon, world.header.ron) {
+                (false, false) => {}
+                (true, false) => {
+                    draw_rect(lx1, lx2, left_color);
+                }
+                (false, true) => {
+                    draw_rect(rx1, rx2, right_color);
+                }
+                (true, true) if world.dst_parallax == 0 => {
+                    draw_rect(lx1, lx2, both_color);
+                }
+                (true, true) => {
+                    draw_rect(lx1, lx2, left_color);
+                    draw_rect(rx1, rx2, right_color);
+                    let (x1, x2) = if world.dst_parallax < 0 {
+                        (lx1, rx2)
+                    } else {
+                        (rx1, lx2)
+                    };
+                    painter.line_segment(
+                        [
+                            res.rect.min + (x1, y1).into(),
+                            res.rect.min + (x2 + 1.0, y1).into(),
+                        ],
+                        (2.0, both_color),
+                    );
+                    painter.line_segment(
+                        [
+                            res.rect.min + (x1, y2).into(),
+                            res.rect.min + (x2 + 1.0, y2).into(),
+                        ],
+                        (2.0, both_color),
+                    );
+                }
+            }
+        }
     }
 }
 
@@ -442,7 +520,7 @@ impl AppWindow for WorldWindow {
     fn initial_viewport(&self) -> ViewportBuilder {
         ViewportBuilder::default()
             .with_title(format!("Worlds ({})", self.sim_id))
-            .with_inner_size((640.0, 500.0))
+            .with_inner_size((640.0, 520.0))
     }
 
     fn on_init(&mut self, ctx: &Context, _render_state: &egui_wgpu::RenderState) {