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https://github.com/enzet/map-machine.git
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400 lines
12 KiB
Python
400 lines
12 KiB
Python
"""
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Figures displayed on the map.
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"""
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from typing import Any, Dict, List, Optional
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import numpy as np
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from colour import Color
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from svgwrite import Drawing
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from svgwrite.path import Path
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from roentgen.direction import Sector, DirectionSet
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from roentgen.flinger import Flinger
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from roentgen.osm_reader import OSMNode, Tagged
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from roentgen.road import Lane
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from roentgen.scheme import LineStyle, RoadMatcher, Scheme
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__author__ = "Sergey Vartanov"
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__email__ = "me@enzet.ru"
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class Figure(Tagged):
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"""
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Some figure on the map: way or area.
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"""
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def __init__(
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self,
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tags: Dict[str, str],
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inners: List[List[OSMNode]],
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outers: List[List[OSMNode]],
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):
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super().__init__()
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self.tags: Dict[str, str] = tags
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self.inners: List[List[OSMNode]] = []
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self.outers: List[List[OSMNode]] = []
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for inner_nodes in inners:
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self.inners.append(make_clockwise(inner_nodes))
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for outer_nodes in outers:
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self.outers.append(make_counter_clockwise(outer_nodes))
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def get_path(
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self, flinger: Flinger, shift: np.array = np.array((0, 0))
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) -> str:
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"""
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Get SVG path commands.
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:param flinger: converter for geo coordinates
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:param shift: shift vector
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"""
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path: str = ""
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for outer_nodes in self.outers:
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path += f"{get_path(outer_nodes, shift, flinger)} "
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for inner_nodes in self.inners:
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path += f"{get_path(inner_nodes, shift, flinger)} "
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return path
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class Building(Figure):
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"""
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Building on the map.
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"""
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def __init__(
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self,
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tags: Dict[str, str],
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inners: List[List[OSMNode]],
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outers: List[List[OSMNode]],
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flinger: Flinger,
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scheme: Scheme,
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):
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super().__init__(tags, inners, outers)
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style: Dict[str, Any] = {
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"fill": scheme.get_color("building_color").hex,
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"stroke": scheme.get_color("building_border_color").hex,
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}
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self.line_style = LineStyle(style)
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self.parts = []
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for nodes in self.inners + self.outers:
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for i in range(len(nodes) - 1):
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flung_1: np.array = flinger.fling(nodes[i].coordinates)
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flung_2: np.array = flinger.fling(nodes[i + 1].coordinates)
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self.parts.append(Segment(flung_1, flung_2))
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self.parts = sorted(self.parts)
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self.height: float = 8.0
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self.min_height: float = 0.0
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levels: Optional[str] = self.get_float("building:levels")
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if levels:
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self.height = float(levels) * 2.5
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levels: Optional[str] = self.get_float("building:min_level")
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if levels:
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self.min_height = float(levels) * 2.5
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height: Optional[float] = self.get_length("height")
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if height:
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self.height = height
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height: Optional[float] = self.get_length("min_height")
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if height:
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self.min_height = height
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def draw_shade(self, building_shade, flinger: Flinger) -> None:
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"""Draw shade casted by the building."""
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scale: float = flinger.get_scale() / 3.0
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shift_1 = np.array((scale * self.min_height, 0))
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shift_2 = np.array((scale * self.height, 0))
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commands: str = self.get_path(flinger, shift_1)
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path = Path(
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d=commands, fill="#000000", stroke="#000000", stroke_width=1
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)
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building_shade.add(path)
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for nodes in self.inners + self.outers:
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for i in range(len(nodes) - 1):
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flung_1 = flinger.fling(nodes[i].coordinates)
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flung_2 = flinger.fling(nodes[i + 1].coordinates)
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command = (
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"M",
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np.add(flung_1, shift_1),
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"L",
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np.add(flung_2, shift_1),
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np.add(flung_2, shift_2),
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np.add(flung_1, shift_2),
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"Z",
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)
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path = Path(
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command, fill="#000000", stroke="#000000", stroke_width=1
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)
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building_shade.add(path)
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def draw_walls(
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self, svg: Drawing, height: float, previous_height: float, scale: float
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) -> None:
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"""Draw building walls."""
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shift_1 = [0, -previous_height * scale]
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shift_2 = [0, -height * scale]
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for segment in self.parts:
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if height == 2:
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fill = Color("#AAAAAA")
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elif height == 4:
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fill = Color("#C3C3C3")
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else:
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color_part: float = 0.8 + segment.angle * 0.2
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fill = Color(rgb=(color_part, color_part, color_part))
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command = (
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"M",
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segment.point_1 + shift_1,
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"L",
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segment.point_2 + shift_1,
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segment.point_2 + shift_2,
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segment.point_1 + shift_2,
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segment.point_1 + shift_1,
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"Z",
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)
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path = svg.path(
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d=command,
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fill=fill.hex,
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stroke=fill.hex,
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stroke_width=1,
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stroke_linejoin="round",
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)
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svg.add(path)
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def draw_roof(self, svg: Drawing, flinger: Flinger, scale: float):
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"""Draw building roof."""
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path: Path = Path(
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d=self.get_path(flinger, np.array([0, -self.height * scale]))
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)
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path.update(self.line_style.style)
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path.update({"stroke-linejoin": "round"})
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svg.add(path)
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class StyledFigure(Figure):
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"""
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Figure with stroke and fill style.
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"""
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def __init__(
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self,
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tags: Dict[str, str],
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inners: List[List[OSMNode]],
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outers: List[List[OSMNode]],
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line_style: LineStyle,
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):
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super().__init__(tags, inners, outers)
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self.line_style = line_style
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class Road(Figure):
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"""
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Road or track on the map.
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"""
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def __init__(
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self,
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tags: Dict[str, str],
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inners: List[List[OSMNode]],
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outers: List[List[OSMNode]],
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matcher: RoadMatcher,
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):
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super().__init__(tags, inners, outers)
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self.matcher: RoadMatcher = matcher
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self.width: Optional[float] = None
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self.lanes: List[Lane] = []
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if "lanes" in tags:
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try:
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self.width = int(tags["lanes"]) * 3.7
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self.lanes = [Lane()] * int(tags["lanes"])
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except ValueError:
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pass
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if "lanes:forward" in tags:
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number = int(tags["lanes:forward"])
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[x.set_forward(True) for x in self.lanes[-number:]]
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if "lanes:backward" in tags:
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number = int(tags["lanes:backward"])
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[x.set_forward(False) for x in self.lanes[:number]]
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if "width" in tags:
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try:
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self.width = float(tags["width"])
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except ValueError:
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pass
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class Tree(Tagged):
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"""
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Tree on the map.
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"""
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def __init__(
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self, tags: dict[str, str], coordinates: np.array, point: np.array
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):
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super().__init__(tags)
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self.coordinates: np.array = coordinates
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self.point: np.array = point
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def draw(self, svg: Drawing, flinger: Flinger, scheme: Scheme):
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"""Draw crown and trunk."""
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scale: float = flinger.get_scale(self.coordinates)
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radius: float
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if "diameter_crown" in self.tags:
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radius = float(self.tags["diameter_crown"]) / 2.0
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else:
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radius = 2.0
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color: Color = scheme.get_color("evergreen_color")
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svg.add(svg.circle(self.point, radius * scale, fill=color, opacity=0.3))
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if "circumference" in self.tags:
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radius: float = float(self.tags["circumference"]) / 2.0 / np.pi
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svg.add(svg.circle(self.point, radius * scale, fill="#B89A74"))
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class DirectionSector(Tagged):
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"""
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Sector that represents direction.
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"""
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def __init__(self, tags: dict[str, str], point):
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super().__init__(tags)
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self.point = point
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def draw(self, svg: Drawing, scheme: Scheme):
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"""Draw gradient sector."""
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angle = None
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is_revert_gradient: bool = False
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if self.get_tag("man_made") == "surveillance":
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direction = self.get_tag("camera:direction")
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if "camera:angle" in self.tags:
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angle = float(self.get_tag("camera:angle"))
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if "angle" in self.tags:
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angle = float(self.get_tag("angle"))
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direction_radius: float = 25
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direction_color: Color = scheme.get_color("direction_camera_color")
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elif self.get_tag("traffic_sign") == "stop":
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direction = self.get_tag("direction")
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direction_radius: float = 25
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direction_color: Color = Color("red")
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else:
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direction = self.get_tag("direction")
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direction_radius: float = 50
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direction_color: Color = scheme.get_color("direction_view_color")
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is_revert_gradient = True
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if not direction:
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return
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point = (self.point.astype(int)).astype(float)
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if angle:
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paths = [Sector(direction, angle).draw(point, direction_radius)]
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else:
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paths = DirectionSet(direction).draw(point, direction_radius)
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for path in paths:
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radial_gradient = svg.radialGradient(
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center=point,
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r=direction_radius,
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gradientUnits="userSpaceOnUse",
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)
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gradient = svg.defs.add(radial_gradient)
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if is_revert_gradient:
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(
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gradient
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.add_stop_color(0, direction_color.hex, opacity=0)
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.add_stop_color(1, direction_color.hex, opacity=0.7)
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) # fmt: skip
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else:
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(
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gradient
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.add_stop_color(0, direction_color.hex, opacity=0.4)
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.add_stop_color(1, direction_color.hex, opacity=0)
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) # fmt: skip
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path_element: Path = svg.path(
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d=["M", point] + path + ["L", point, "Z"],
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fill=gradient.get_paint_server(),
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)
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svg.add(path_element)
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class Segment:
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"""
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Line segment.
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"""
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def __init__(self, point_1: np.array, point_2: np.array):
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self.point_1: np.array = point_1
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self.point_2: np.array = point_2
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difference: np.array = point_2 - point_1
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vector: np.array = difference / np.linalg.norm(difference)
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self.angle: float = np.arccos(np.dot(vector, np.array((0, 1)))) / np.pi
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def __lt__(self, other: "Segment") -> bool:
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return (
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((self.point_1 + self.point_2) / 2)[1]
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< ((other.point_1 + other.point_2) / 2)[1]
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) # fmt: skip
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def is_clockwise(polygon: List[OSMNode]) -> bool:
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"""
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Return true if polygon nodes are in clockwise order.
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:param polygon: list of OpenStreetMap nodes
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"""
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count: float = 0
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for index, node in enumerate(polygon):
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next_index: int = 0 if index == len(polygon) - 1 else index + 1
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count += (polygon[next_index].coordinates[0] - node.coordinates[0]) * (
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polygon[next_index].coordinates[1] + node.coordinates[1]
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)
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return count >= 0
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def make_clockwise(polygon: List[OSMNode]) -> List[OSMNode]:
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"""
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Make polygon nodes clockwise.
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:param polygon: list of OpenStreetMap nodes
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"""
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return polygon if is_clockwise(polygon) else list(reversed(polygon))
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def make_counter_clockwise(polygon: List[OSMNode]) -> List[OSMNode]:
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"""
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Make polygon nodes counter-clockwise.
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:param polygon: list of OpenStreetMap nodes
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"""
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return polygon if not is_clockwise(polygon) else list(reversed(polygon))
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def get_path(nodes: List[OSMNode], shift: np.array, flinger: Flinger) -> str:
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"""Construct SVG path commands from nodes."""
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path: str = ""
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prev_node: Optional[OSMNode] = None
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for node in nodes:
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flung = flinger.fling(node.coordinates) + shift
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path += ("L" if prev_node else "M") + f" {flung[0]},{flung[1]} "
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prev_node = node
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if nodes[0] == nodes[-1]:
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path += "Z"
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else:
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path = path[:-1]
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return path
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