GeoRectBounds

GeoRectBounds stores optional south-west and north-east corners and can be extended with points.

let bounds = GeoRectBounds(
    southWest: GeoPoint(latitude: 35.67, longitude: 139.74),
    northEast: GeoPoint(latitude: 35.69, longitude: 139.76)
)

Public API

• isEmpty: Bool
• southWest: GeoPoint?
• northEast: GeoPoint?
• center: GeoPoint?
• extend(point:)
• contains(point:)
• union(other:)
• toSpan() -> GeoPoint?
• toUrlValue(precision:)
• expandedByDegrees(latPad:lonPad:)
• intersects(other:)

Use southWest, northEast, toSpan(), and isEmpty for bounds inspection.

Building Bounds from Points

let bounds = GeoRectBounds()
for point in points {
    bounds.extend(point: point)
}

if let center = bounds.center {
    mapViewState.moveCameraTo(
        cameraPosition: MapCameraPosition(position: center, zoom: 12),
        durationMillis: 300
    )
}

To move the map to show a bounds-like area, calculate the desired camera yourself and call moveCameraTo(cameraPosition:durationMillis:).

Containment and Intersection

Bounds are useful for filtering visible data, detecting overlap between regions, and building debug overlays.

if bounds.contains(point: candidate) {
    visiblePoints.append(candidate)
}

if searchArea.intersects(other: loadedTileBounds) {
    loadMoreData()
}

Displaying Bounds

To display a rectangular bounds outline, pass the bounds to Polyline:

Polyline(
    bounds: bounds,
    strokeColor: .red,
    strokeWidth: 2
)

Use expandedByDegrees(latPad:lonPad:) when you need a simple degree-based margin around an existing bounds. This is not a replacement for camera fitting; it only returns a larger geographic rectangle.