update: minor progress, part of map

server/map/get_relation.py

@@ -30,8 +30,8 @@ def get_relation(self, body_of_water: str):
         # Divide the length and with of polygon into a grid
         grid_lines = create_grid_coords(polygon, cell_size=0.1)
 
-        hrz_lines = grid_lines[0]  # Horizontal coordinates
-        vrt_lines = grid_lines[1]  # Vertical coordinates
+        hrz_lines = [60.7451]  # Horizontal coordinates
+        vrt_lines = [10.9600]  # Vertical coordinates
 
         # Cut polygon into horizontal sections
         for hrz_line in hrz_lines:
@@ -50,7 +50,7 @@ def get_relation(self, body_of_water: str):
                 if not cut_poly_2[0]:
                     continue
 
-                divided_map.extend(cut_poly_2[0])  # Append part to final list of shapes
+                divided_map.append(cut_poly_2[0])  # Append part to final list of shapes
 
                 # Set polygon_part to the remaining, un-split, horizontal section for next iteration
                 polygon_part = cut_poly_2[1]
@@ -92,26 +92,31 @@ def cut_polygon_in_two(polygon: Polygon, divisor: float, horizontal: bool):
     for point in exterior_coords:
         point = Point(point)  # Convert coordinates to Shapely Point object
         if horizontal:  # Horizontal split
-            if point.y < divisor:
+            if point.y > divisor:
                 split_shape.append(point)
             else:
                 remaining_shape.append(point)
         else:  # Vertical split
-            if point.x < divisor:
+            if point.x > divisor:
                 split_shape.append(point)
             else:
                 remaining_shape.append(point)
 
     # Check if polygons have enough coordinates
-    if len(split_shape) < 3 or len(remaining_shape) < 3:
-        print("Not enough coordinates to create valid polygons")
-        return None, None
+    if len(split_shape) < 3:
+        print("Not enough coordinates to create valid polygons: Split shape")
+        split_shape = None
+    else:
+        split_shape.append(split_shape[0])  # NB: may not be necessary?
 
-    # Append the first coordinate of the shapes to create closed loop
-    split_shape.append(split_shape[0]) # NB: may not be necessary?
-    remaining_shape.append(remaining_shape[0])
+    if len(remaining_shape) < 3:
+        print("Not enough coordinates to create valid polygons: Remaining shape")
+        remaining_shape = None
+    else:
+        remaining_shape.append(remaining_shape[0])
 
-    return Polygon(split_shape), Polygon(remaining_shape)  # Return split polygons as Shapely Polygon objects
+    # Return split polygons as Shapely Polygon objects
+    return Polygon(split_shape), Polygon(remaining_shape)
 
 
 # Generate grid of equally spaced x and y coordinates where the grid size is determined by cell_size
@@ -123,5 +128,6 @@ def create_grid_coords(polygon: Polygon, cell_size: float):
     if len(x_coords) == 0 or len(y_coords) == 0:
         raise ValueError("No grid points generated")
 
+    # Return tuple of list of x coordinates and list of y coordinates
     return x_coords, y_coords