add_trees: refactor

python_scripts/add_trees_to_open_street_map/add_trees.py

@@ -55,6 +55,11 @@ TREE_DISTANCE = 25  # [m]
 # Unless there's already another tree closer than MIN_DISTANCE away:
 MIN_DISTANCE = 10  # [m]
 
+TREE_SPECIES = 'Acer platanoides' # Should be known by Tree-DB
+TREE_CROWN_DIAMETER = 8 # [m]
+TREE_HEIGHT = 12 # [m]
+TREE_TRUNK_DIAMETER = 90 # [cm]
+
 ########################
 #       STREETS        #
 ########################
@@ -211,10 +216,10 @@ def place_trees(forest: Forest, ways: list, region: str, to_local, tree_distance
                 forest.add_tree_if_possible(min_distance_2, x, y,
                                             color='#DFFF00',
                                             type='Fake Tree',
-                                            description='Tilia tomentosa',
-                                            diameter=6, # [m]
-                                            height=10, # [m]
-                                            trunk_diameter=50, # [cm]
+                                            description=TREE_SPECIES,
+                                            diameter=TREE_CROWN_DIAMETER, # [m]
+                                            height=TREE_HEIGHT, # [m]
+                                            trunk_diameter=TREE_TRUNK_DIAMETER, # [cm]
                                             source='add_trees.py'
                                             )