77 lines
2.0 KiB
Python
77 lines
2.0 KiB
Python
from __future__ import annotations
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from collections import deque
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from math import cos, sin
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from threading import Event, Thread
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from time import sleep
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from typing import Any
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import dearpygui.dearpygui as _dpg
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import dpg_map as dpgm
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dpg: Any = _dpg
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def main() -> None:
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dpgm.configure(user_agent="dpg-map trajectory_live_thread example")
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stop = Event()
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points: deque[tuple[float, float]] = deque(maxlen=240)
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dpg.create_context()
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dpg.create_viewport(title="dpg-map live trajectory", width=1000, height=700)
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with (
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dpg.window(label="Live Trajectory", width=-1, height=-1),
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dpgm.map_widget(
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tag="live-trajectory-map",
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center=(47.9029, 1.9093),
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zoom=15,
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width=-1,
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height=-1,
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),
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):
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dpgm.add_trajectory(
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"track",
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points=[],
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color=(250, 190, 80, 255),
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thickness=3.0,
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show_points=True,
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point_stride=12,
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)
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dpgm.add_marker(
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"head",
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lat=47.9029,
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lon=1.9093,
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color=(72, 205, 154, 255),
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radius=6,
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)
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def update_trajectory() -> None:
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tick = 0
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while not stop.is_set():
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angle = tick * 0.06
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lat = 47.9029 + sin(angle) * 0.0016 + sin(angle * 2.7) * 0.00025
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lon = 1.9093 + cos(angle) * 0.0016
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points.append((lat, lon))
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snapshot = tuple(points)
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dpgm.update_trajectory("track", points=snapshot, map_tag="live-trajectory-map")
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dpgm.update_marker("head", lat=lat, lon=lon, map_tag="live-trajectory-map")
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tick += 1
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sleep(1 / 20)
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worker = Thread(target=update_trajectory, name="dpg-map-live-trajectory", daemon=True)
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worker.start()
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try:
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dpg.setup_dearpygui()
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dpg.show_viewport()
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dpg.start_dearpygui()
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finally:
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stop.set()
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worker.join(timeout=1.0)
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dpg.destroy_context()
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if __name__ == "__main__":
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main()
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