55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
import pygame
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from map_display import MapDisplay
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from path import Path
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from vec import Vec2
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class SpeedMapDisplay(MapDisplay):
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def __init__(self,
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surf: pygame.Surface,
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min_lon: float,
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max_lon: float,
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min_lat: float,
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max_lat: float,
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cities: list[tuple[Vec2, str, str]],
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min_speed_col: tuple[int, int, int],
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max_speed_col: tuple[int, int, int],
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segment_threshold: float):
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super().__init__(surf, min_lon, max_lon, min_lat, max_lat, cities)
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self.min_speed_col: tuple[int, int, int] = min_speed_col
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self.max_speed_col: tuple[int, int, int] = max_speed_col
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self.segment_threshold: float = segment_threshold
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def draw_path(self, path: Path) -> None:
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min_speed = min(path.extra_data)
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max_speed = max(path.extra_data)
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colors = list(map(lambda s: self.interpolate_color(s, min_speed, max_speed), path.extra_data))
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self.draw_colored_path(path, colors)
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in_segment = False
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start_i = 0
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for i, speed in enumerate(path.extra_data):
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if speed >= self.segment_threshold:
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if not in_segment:
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in_segment = True
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start_i = i
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elif in_segment:
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in_segment = False
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self.draw_segment(path, start_i, i)
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def interpolate_color(self, speed: float, min_speed: float, max_speed: float) -> tuple[int, int, int]:
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r_span = self.max_speed_col[0] - self.min_speed_col[0]
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g_span = self.max_speed_col[1] - self.min_speed_col[1]
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b_span = self.max_speed_col[2] - self.min_speed_col[2]
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f = (speed - min_speed) / (max_speed - min_speed)
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r = int(r_span * f + self.min_speed_col[0])
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g = int(g_span * f + self.min_speed_col[1])
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b = int(b_span * f + self.min_speed_col[2])
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return r, g, b
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