54 lines
1.9 KiB
Markdown
54 lines
1.9 KiB
Markdown
# dpg-map
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`dpg-map` is a Dear PyGui map widget package under rebuild.
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The Step 6 overlay rendering layer is in place:
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```python
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import dpg_map as dpgm
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provider = dpgm.TileProvider(
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name="custom",
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url_template="https://example.com/{z}/{x}/{y}.png",
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attribution="Tiles (c) Example",
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)
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dpgm.register_provider(provider)
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with dpgm.map_widget(tag="map", center=(47.9029, 1.9093), zoom=15):
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dpgm.add_marker("vehicle", lat=47.9029, lon=1.9093)
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dpgm.update_marker("vehicle", lat=47.9030, lon=1.9094, map_tag="map")
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```
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Implemented so far:
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- public package exports
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- tile provider definitions and registry
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- Web Mercator projection helpers
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- thread-safe logical map state and map registry
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- command queue with coalescing for overlay and view updates
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- logical marker, polyline, trajectory, and layer models
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- persistent disk cache paths, metadata, scanning, pruning, and clearing
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- Dear PyGui `child_window` + measured-size `drawlist` widget shell
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- GUI-thread frame pump that drains commands, manages textures, and draws raster tiles
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- sizing helpers that preserve the last non-zero size across hidden layouts
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- asynchronous tile workers that read disk cache, fetch HTTP, and decode images
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- memory cache with visible-tile protection and GUI-thread texture deletion
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- measured-rectangle mouse interaction for left-drag panning and wheel zooming
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- programmatic view commands and screen/latitude-longitude conversion helpers
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- marker, polyline, and trajectory rendering on a draw layer separate from tiles
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- background-thread overlay updates that coalesce without resetting center or zoom
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Examples:
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```bash
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uv run python examples/basic_map.py
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uv run python examples/sizing_window.py
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uv run python examples/sizing_child.py
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uv run python examples/sizing_table.py
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uv run python examples/hidden_tab.py
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uv run python examples/cache_stress.py
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uv run python examples/markers_live_thread.py
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uv run python examples/trajectory_live_thread.py
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```
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