Updated city download to use city boundary box

[Choromanski]

User description

Instead of using central cords of city +/- buffer get the boundary box of the city +/- buffer

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PR Type

Enhancement

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Description

• Replace city center coordinates with actual boundary boxes

• Use bounding box coordinates from geocoding API response

• Apply buffer to boundary extents instead of center point

• Improve geographic accuracy for city-based tile downloads

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Diagram Walkthrough

flowchart LR
  A["City Geocoding"] --> B["Extract Bounding Box"]
  B --> C["Apply Buffer to Bounds"]
  C --> D["Calculate Final Area"]
  E["Old: Center + Buffer"] -.-> F["New: Boundary + Buffer"]

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File Walkthrough

	Relevant files
Enhancement	meshtastic_tiles.py Replace center coordinates with boundary boxes                      meshtastic_tiles.py Extract bounding box coordinates from geocoding API response Replace center-based calculations with boundary-based calculations Update coordinate handling in both single and multiple city workflows Apply buffer to actual city boundaries instead of center points +16/-10

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Missing Validation The code assumes boundingbox array always has 4 elements when extracting coordinates. If the geocoding API returns incomplete or malformed bounding box data, this could cause IndexError exceptions. 'south': float(result['boundingbox'][0]), 'north': float(result['boundingbox'][1]), 'west': float(result['boundingbox'][2]), 'east': float(result['boundingbox'][3]), Buffer Approximation The buffer conversion uses a fixed approximation of 111km per degree, which is only accurate at the equator. At higher latitudes, longitude degrees represent shorter distances, making the buffer inaccurate. buffer_deg = buffer_km / 111.0 # ~111km per degree

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	Add bounding box validation Add validation to ensure the boundingbox array has at least 4 elements before accessing indices. This prevents IndexError if the API returns incomplete bounding box data. meshtastic_tiles.py [56-59] -'south': float(result['boundingbox'][0]), -'north': float(result['boundingbox'][1]), -'west': float(result['boundingbox'][2]), -'east': float(result['boundingbox'][3]), +bbox = result.get('boundingbox', []) +if len(bbox) >= 4: + 'south': float(bbox[0]), + 'north': float(bbox[1]), + 'west': float(bbox[2]), + 'east': float(bbox[3]), +else: + # Fallback to center point with small offset + lat, lon = float(result['lat']), float(result['lon']) + offset = 0.01 # ~1km + 'south': lat - offset, + 'north': lat + offset, + 'west': lon - offset, + 'east': lon + offset, [To ensure code accuracy, apply this suggestion manually] Suggestion importance[1-10]: 7 __ Why: The suggestion correctly identifies a potential IndexError if the API returns incomplete boundingbox data and provides a sensible fallback, improving the code's robustness.	Medium
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