254 lines
11 KiB
Python
254 lines
11 KiB
Python
from argparse import ArgumentParser
|
|
from collections import namedtuple
|
|
import json
|
|
from pathlib import Path
|
|
import xml.etree.ElementTree as ET
|
|
|
|
import cv2
|
|
import numpy as np
|
|
from PIL import Image, ImageDraw
|
|
|
|
|
|
Bounds = namedtuple('Bounds', ['maxlat', 'maxlon', 'minlat', 'minlon'])
|
|
BoundsTypes = [float, float, float, float]
|
|
|
|
Member = namedtuple('Member', ['type', 'ref', 'role'])
|
|
MemberTypes = [str, int, str]
|
|
|
|
Node = namedtuple('Node', ['id', 'lat', 'lon', 'tags', 'uid', 'version', 'visible'])
|
|
NodeTypes = [int, float, float, dict, int, int, bool]
|
|
|
|
Relation = namedtuple('Relation', ['id', 'members', 'tags', 'uid', 'version', 'visible'])
|
|
RelationTypes = [int, list, dict, int, int, bool]
|
|
|
|
Way = namedtuple('Way', ['id', 'nodes', 'tags', 'uid', 'version', 'visible'])
|
|
WayTypes = [int, list, dict, int, int, bool]
|
|
|
|
|
|
def create_bounds(xml) -> Bounds:
|
|
return Bounds(*(key_type(xml.get(key)) for key_type, key in zip(BoundsTypes, Bounds._fields, strict=True)))
|
|
|
|
|
|
def create_node(xml) -> Node:
|
|
tags = {tag.get('k'): tag.get('v') for tag in xml.iter('tag')}
|
|
return Node(*(tags if key == 'tags' else key_type(xml.get(key))
|
|
for key_type, key in zip(NodeTypes, Node._fields, strict=True)))
|
|
|
|
|
|
def create_way(xml) -> Way:
|
|
nodes = [int(nd.get('ref')) for nd in xml.iter('nd')]
|
|
tags = {tag.get('k'): tag.get('v') for tag in xml.iter('tag')}
|
|
params = []
|
|
for key_type, key in zip(WayTypes, Way._fields, strict=True):
|
|
match key:
|
|
case 'tags':
|
|
params.append(tags)
|
|
case 'nodes':
|
|
params.append(nodes)
|
|
case _:
|
|
params.append(key_type(xml.get(key)))
|
|
return Way(*params)
|
|
|
|
|
|
def create_member(xml) -> Member:
|
|
return Member(*(key_type(xml.get(key)) for key_type, key in zip(MemberTypes, Member._fields, strict=True)))
|
|
|
|
|
|
def create_relation(xml) -> Relation:
|
|
members = [create_member(member) for member in xml.iter('member')]
|
|
tags = {tag.get('k'): tag.get('v') for tag in xml.iter('tag')}
|
|
params = []
|
|
for key_type, key in zip(RelationTypes, Relation._fields, strict=True):
|
|
match key:
|
|
case 'tags':
|
|
params.append(tags)
|
|
case 'members':
|
|
params.append(members)
|
|
case _:
|
|
params.append(key_type(xml.get(key)))
|
|
return Relation(*params)
|
|
|
|
|
|
def parse_xml(xml_path: Path) -> tuple[Bounds, dict[int, Node], dict[int, Way], dict[int, Relation]]:
|
|
root = ET.parse(xml_path).getroot()
|
|
|
|
bounds = root.find('bounds')
|
|
if bounds is None:
|
|
raise RuntimeError('Cannot find bounds')
|
|
bounds = create_bounds(bounds)
|
|
|
|
nodes = {}
|
|
relations = {}
|
|
ways = {}
|
|
for element in root:
|
|
match element.tag:
|
|
case 'node':
|
|
node = create_node(element)
|
|
nodes[node.id] = node
|
|
case 'way':
|
|
way = create_way(element)
|
|
ways[way.id] = way
|
|
case 'relation':
|
|
relation = create_relation(element)
|
|
relations[relation.id] = relation
|
|
case 'bounds':
|
|
pass
|
|
case _:
|
|
raise RuntimeError(f'Unexpected tag : {element.tag}')
|
|
return bounds, nodes, ways, relations
|
|
|
|
|
|
def main():
|
|
parser = ArgumentParser()
|
|
parser.add_argument('osm', type=Path, help='Path to OSM file to parse')
|
|
parser.add_argument('--convert', action='store_true', default=False, help='Convert data into JSON')
|
|
parser.add_argument('--map-height', type=int, default=720, help='Height of output map in pixels')
|
|
arguments = parser.parse_args()
|
|
|
|
osm_path: Path = arguments.osm
|
|
convert_data: bool = arguments.convert
|
|
map_height: int = arguments.map_height
|
|
del arguments
|
|
|
|
bounds, nodes, ways, relations = parse_xml(osm_path)
|
|
print(f'{bounds} {len(nodes)=} {len(ways)=} {len(relations)=}')
|
|
|
|
if convert_data:
|
|
with (osm_path.parent / f'{osm_path.stem}.json').open(mode='w', encoding='utf-8') as json_file:
|
|
json_file.write('{\n')
|
|
json_file.write(
|
|
f'"bounds:" {json.dumps(dict(zip(bounds._fields, bounds, strict=True)), ensure_ascii=False)},\n')
|
|
json_file.write('"nodes": [\n')
|
|
previous_entry = ''
|
|
for node in nodes.values():
|
|
if previous_entry:
|
|
json_file.write(f' {previous_entry},\n')
|
|
previous_entry = json.dumps(
|
|
{k: v for k, v in zip(node._fields, node, strict=True) if not isinstance(v, dict) or v},
|
|
ensure_ascii=False)
|
|
if previous_entry:
|
|
json_file.write(f' {previous_entry}\n')
|
|
json_file.write('],\n"ways": [\n')
|
|
previous_entry = ''
|
|
for way in ways.values():
|
|
if previous_entry:
|
|
json_file.write(f' {previous_entry},\n')
|
|
previous_entry = json.dumps(
|
|
{k: v for k, v in zip(way._fields, way, strict=True) if not isinstance(v, dict) or v},
|
|
ensure_ascii=False)
|
|
if previous_entry:
|
|
json_file.write(f' {previous_entry}\n')
|
|
json_file.write('],\n"relations": [\n')
|
|
previous_entry = ''
|
|
for relation in relations.values():
|
|
if previous_entry:
|
|
json_file.write(f' {previous_entry},\n')
|
|
previous_entry = json.dumps(
|
|
{k: (v if k != 'members' else [dict(zip(m._fields, m, strict=True)) for m in v])
|
|
for k, v in zip(relation._fields, relation, strict=True) if not isinstance(v, dict) or v},
|
|
ensure_ascii=False)
|
|
if previous_entry:
|
|
json_file.write(f' {previous_entry}\n')
|
|
json_file.write('}')
|
|
return
|
|
|
|
lat_range = bounds.maxlat - bounds.minlat
|
|
lon_range = bounds.maxlon - bounds.minlon
|
|
map_ratio = lon_range / lat_range
|
|
map_width = int(map_height * map_ratio)
|
|
lat_scale = map_height / lat_range
|
|
lon_scale = map_width / lon_range
|
|
|
|
background_color = (235, 235, 235)
|
|
image = Image.new('RGB', (map_width, map_height), background_color)
|
|
draw = ImageDraw.Draw(image, 'RGB')
|
|
|
|
def draw_way_polygon(way: Way, color: tuple[int, ...] | str, outline: tuple[int, ...] | str | None = None,
|
|
width: int = 1):
|
|
nonlocal bounds, draw, lat_scale, lon_scale, map_height, map_width, nodes
|
|
coords = []
|
|
for node_id in way.nodes:
|
|
node = nodes[node_id]
|
|
new_coord = (
|
|
min(max((node.lon - bounds.minlon) * lon_scale, 0), map_width),
|
|
min(max(map_height - ((node.lat - bounds.minlat) * lat_scale), 0), map_height))
|
|
if not coords or new_coord != coords[-1]:
|
|
coords.append(new_coord)
|
|
draw.polygon(coords, fill=color, outline=outline, width=width)
|
|
|
|
def draw_way_line(way: Way, width: int, color: tuple[int, ...] | str, joint: str | None = None):
|
|
nonlocal bounds, draw, lat_scale, lon_scale, map_height, map_width, nodes
|
|
coords = []
|
|
for node_id in way.nodes:
|
|
node = nodes[node_id]
|
|
new_coord = (
|
|
min(max((node.lon - bounds.minlon) * lon_scale, 0), map_width),
|
|
min(max(map_height - ((node.lat - bounds.minlat) * lat_scale), 0), map_height))
|
|
if not coords or new_coord != coords[-1]:
|
|
coords.append(new_coord)
|
|
draw.line(coords, width=width, fill=color, joint=joint)
|
|
|
|
for relation in relations.values():
|
|
if 'natural' in relation.tags and relation.tags['natural'] == 'wood':
|
|
outer_ways: list[Way] = []
|
|
inner_ways: list[Way] = []
|
|
for member in relation.members:
|
|
member: Member
|
|
if member.type != 'way' or member.ref not in ways:
|
|
continue
|
|
if member.role == 'outer':
|
|
outer_ways.append(ways[member.ref])
|
|
elif member.role == 'inner':
|
|
inner_ways.append(ways[member.ref])
|
|
for way in outer_ways:
|
|
draw_way_polygon(way, (140, 200, 120))
|
|
for way in inner_ways:
|
|
draw_way_polygon(way, background_color)
|
|
|
|
bridge_outline = (80, 80, 80)
|
|
for way in ways.values():
|
|
if 'amenity' in way.tags:
|
|
match way.tags['amenity']:
|
|
case 'school' | 'kindergarten' | 'library' | 'research_institute' | 'university':
|
|
draw_way_polygon(way, (250, 250, 220))
|
|
case ('bicycle_parking' | 'bus_station' | 'fuel' | 'parking' | 'parking_entrance' | 'parking_space'
|
|
| 'taxi'):
|
|
draw_way_polygon(way, (220, 220, 220), outline=(180, 180, 180))
|
|
case _:
|
|
draw_way_polygon(way, (240, 200, 200))
|
|
|
|
for way in ways.values():
|
|
if 'highway' in way.tags:
|
|
match way.tags['highway']:
|
|
case 'motorway' | 'motorway_link':
|
|
draw_way_line(way, 15, (220, 160, 160), joint='curve')
|
|
case 'trunk' | 'trunk_link':
|
|
draw_way_line(way, 13, bridge_outline if 'bridge' in way.tags else (230, 180, 130), joint='curve')
|
|
draw_way_line(way, 11, (240, 200, 170), joint='curve')
|
|
case 'primary' | 'primary_link':
|
|
draw_way_line(way, 11, bridge_outline if 'bridge' in way.tags else (230, 200, 110), joint='curve')
|
|
draw_way_line(way, 9, (245, 225, 150), joint='curve')
|
|
case 'secondary' | 'secondary_link':
|
|
draw_way_line(way, 11, bridge_outline if 'bridge' in way.tags else (200, 200, 140), joint='curve')
|
|
draw_way_line(way, 9, (220, 220, 180), joint='curve')
|
|
case 'tertiary' | 'tertiraty_link':
|
|
draw_way_line(way, 9, bridge_outline if 'bridge' in way.tags else (160, 160, 160), joint='curve')
|
|
draw_way_line(way, 7, (245, 245, 245), joint='curve')
|
|
case 'residential' | 'unclassified' | 'road':
|
|
draw_way_line(way, 7, bridge_outline if 'bridge' in way.tags else (160, 160, 160), joint='curve')
|
|
draw_way_line(way, 5, (250, 250, 250), joint='curve')
|
|
elif 'waterway' in way.tags and way.tags['waterway'] in {'river', 'steam', 'tidal_channel', 'flowline'}:
|
|
draw_way_line(way, 11, (180, 200, 240), joint='curve')
|
|
elif 'building' in way.tags:
|
|
draw_way_polygon(way, (190, 180, 160), outline=(120, 120, 120))
|
|
|
|
image = cv2.cvtColor(np.asarray(image), cv2.COLOR_BGR2RGB)
|
|
print(f'{image.shape=}')
|
|
cv2.namedWindow('map', cv2.WINDOW_KEEPRATIO)
|
|
while cv2.waitKey(50) & 0xff != ord('q'):
|
|
cv2.imshow('map', image)
|
|
cv2.destroyAllWindows()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|