step 6: add stable overlays and live update stress tests

examples/markers_live_thread.py

@@ -0,0 +1,66 @@
+from __future__ import annotations
+
+from math import cos, sin
+from threading import Event, Thread
+from time import sleep
+from typing import Any
+
+import dearpygui.dearpygui as _dpg
+
+import dpg_map as dpgm
+
+dpg: Any = _dpg
+
+
+def main() -> None:
+    dpgm.configure(user_agent="dpg-map markers_live_thread example")
+    stop = Event()
+
+    dpg.create_context()
+    dpg.create_viewport(title="dpg-map live markers", width=1000, height=700)
+
+    with (
+        dpg.window(label="Live Markers", width=-1, height=-1),
+        dpgm.map_widget(
+            tag="live-markers-map", center=(47.9029, 1.9093), zoom=15, width=-1, height=-1
+        ),
+    ):
+        for index in range(12):
+            dpgm.add_marker(
+                f"vehicle-{index}",
+                lat=47.9029,
+                lon=1.9093,
+                label=str(index + 1),
+                show_label=True,
+                color=(240, 92, 70, 255),
+            )
+
+    def update_markers() -> None:
+        tick = 0
+        while not stop.is_set():
+            for index in range(12):
+                angle = tick * 0.08 + index * 0.52
+                radius = 0.0015 + (index % 4) * 0.0002
+                dpgm.update_marker(
+                    f"vehicle-{index}",
+                    lat=47.9029 + sin(angle) * radius,
+                    lon=1.9093 + cos(angle) * radius,
+                    map_tag="live-markers-map",
+                )
+            tick += 1
+            sleep(1 / 30)
+
+    worker = Thread(target=update_markers, name="dpg-map-live-markers", daemon=True)
+    worker.start()
+    try:
+        dpg.setup_dearpygui()
+        dpg.show_viewport()
+        dpg.start_dearpygui()
+    finally:
+        stop.set()
+        worker.join(timeout=1.0)
+        dpg.destroy_context()
+
+
+if __name__ == "__main__":
+    main()