Add checkbox to show unguessed cities

get_data.py

@@ -34,8 +34,8 @@ for state in states[:51]: # Just the 50 and DC, not Guam/American Samoa/PR/etc
         for feature in data['features']:
             # {"type": "Feature", "properties": {"STATEFP": "01", "PLACEFP": "02260", "PLACENS": "02405163", "GEOID": "0102260", "NAME": "Ardmore", "NAMELSAD": "Ardmore town", "LSAD": "43", "CLASSFP": "C1", "PCICBSA": "N", "PCINECTA": "N", "MTFCC": "G4110", "FUNCSTAT": "A", "ALAND": 5289895, "AWATER": 21830, "INTPTLAT": "+34.9878376", "INTPTLON": "-086.8290225"}, "geometry": {"type": "Polygon", "coordinates": [[[-86.856689, 34.992046], [-86.855354, 34.992044], [-86.855101, 34.99204]
             state_place = (feature['properties']['STATEFP'], feature['properties']['PLACEFP'])
-            lat_lon = (float(feature['properties']['INTPTLAT']), float(feature['properties']['INTPTLON']))
-            place_locations[state_place] = lat_lon
+            lon_lat = (float(feature['properties']['INTPTLON']), float(feature['properties']['INTPTLAT']))
+            place_locations[state_place] = lon_lat
         print("done")
 
 print("Fetching population data for all states…", flush=True, end="")

index.html

@@ -61,6 +61,9 @@
             </div>
             <div class="col-8 h-100">
                 <canvas id="canvas" class="mx-3 my-auto" @vue:mounted="draw" width="800" height="600"></canvas>
+                <div>
+                    <input type="checkbox" v-model="show_unguessed_cities" @change="draw"> Show unguessed cities
+                </div>
             </div>
         </div>
     </div>
@@ -126,7 +129,7 @@
             const cities = await response.json();
             await state_shape_data_request; // We can't draw until this is in
             const state_shape = state_shape_data.features.find(f => f.properties.NAME.toLowerCase() == stateName.toLowerCase());
-            const state_bounds = find_bounds(state_shape.geometry.coordinates[0]);
+            const state_mercator_adjusted_bounds = find_bounds(state_shape.geometry.coordinates[0].map(mercator));
             if (!state_shape) {
                 console.error("Unable to find state in shapes");
             }
@@ -137,6 +140,7 @@
                 simplified_cities: cities.map(city => simplify(city.name)),
                 city_guess: "",
                 message: "",
+                show_unguessed_cities: true,
                 achievements: {
                     "Top Five": cities => cities.slice(0, 5),
                     "Top Ten": cities => cities.slice(0, 10),
@@ -169,14 +173,21 @@
                     const ctx = canvas.getContext("2d");
                     ctx.clearRect(0, 0, canvas.width, canvas.height);
 
+                    const [minx, maxx, miny, maxy] = state_mercator_adjusted_bounds;
+                    const height_scale = (canvas.height - 8) / (maxy - miny);
+                    const width_scale = (canvas.width - 8) / (maxx - minx);
+                    const scale = Math.min(height_scale, width_scale);
+
+                    const y_offset = miny - (canvas.height / scale - (maxy - miny)) / 2;
+                    const x_offset = minx - (canvas.width / scale - (maxx - minx)) / 2;
+
                     function transform(pt) {
-                        // TODO: this just works for MN, and not very well at that
-                        return [(pt[0]+98)*80, 600-(pt[1]-42)*80];
+                        pt = mercator(pt)
+                        return [scale * (pt[0] - x_offset), canvas.height - (scale * (pt[1] - y_offset))];
                     }
 
                     ctx.beginPath();
                     ctx.moveTo(...transform(state_shape.geometry.coordinates[0][0]))
-                    console.log(transform(state_shape.geometry.coordinates[0][0]))
                     for (let coord of state_shape.geometry.coordinates[0].slice(1)) {
                         ctx.lineTo(...transform(coord));
                     }
@@ -184,16 +195,29 @@
                     for (let city of cities) {
                         if (city.guessed) {
                             ctx.beginPath();
-                            const c = transform([city.location[1], city.location[0]])
-                            console.log(city.location, c)
+                            const c = transform(city.location)
+                            ctx.fillStyle = "black";
+                            ctx.arc(c[0], c[1], 2, 0, 2*Math.PI, true);
+                        } else if (this.show_unguessed_cities) {
+                            ctx.beginPath();
+                            const c = transform(city.location)
+                            ctx.fillStyle = "lightgray";
                             ctx.arc(c[0], c[1], 2, 0, 2*Math.PI, true);
-                            ctx.fill();
                         }
+                        ctx.fill();
                     }
                 },
             }).mount();
         }
 
+        function mercator(pt) {
+            const radians_from_eq = Math.abs(Math.PI/180 * pt[1]);
+            // https://en.wikipedia.org/wiki/Mercator_projection#Derivation
+            const y_radians = Math.log(Math.tan(Math.PI/4 + radians_from_eq/2));
+            const y_degrees = 180/Math.PI * y_radians;
+            return [pt[0], y_degrees];
+        }
+
         // returns minx, maxx, miny, maxy
         function find_bounds(coords) {
             return [