Mikkeli Matlock
c4d4032b6b
- Add timestamp field to ProcessedGpsData with copyWith support - Add precision switching thresholds: 3.33 m/s (12 km/h) up, 2.22 m/s (8 km/h) down - Add PRECISION_SWITCH_FIRST_FIX_DELAY (5s) to prevent early switching - Add BACKGROUND_GRACE_PERIOD (7s) for lifecycle-aware GPS management - Mark GPS_GRACE_PERIOD as deprecated in favor of BACKGROUND_GRACE_PERIOD - Change GpsService.positionStream to createPositionStream() with dynamic accuracy - Keep deprecated positionStream getter for backward compatibility Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
32 lines
1.3 KiB
Dart
32 lines
1.3 KiB
Dart
// GPS behavioral constants — SCREAMING_SNAKE per project convention
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/// GPS configuration constants for data validation and timeouts
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abstract class GpsConfig {
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/// Time threshold after which GPS data is considered stale
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static const Duration STALE_DATA_THRESHOLD = Duration(seconds: 4);
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/// Timeout for initial GPS fix acquisition (outdoor/cold start)
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static const Duration INITIAL_FIX_TIMEOUT = Duration(seconds: 20);
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/// Timeout for ongoing GPS updates (indoor/signal loss detection)
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static const Duration UPDATE_TIMEOUT = Duration(seconds: 2);
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/// Minimum valid heading value in degrees
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static const double VALID_HEADING_MIN = 0.0;
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/// Maximum valid heading value in degrees
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static const double VALID_HEADING_MAX = 360.0;
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/// Speed threshold below which heading is considered unreliable (m/s)
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static const double LOW_SPEED_THRESHOLD = 1.0;
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/// Speed threshold for switching to HIGH precision (m/s) - 12 km/h
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static const double PRECISION_UP_THRESHOLD_MPS = 3.33;
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/// Speed threshold for switching to BALANCED precision (m/s) - 8 km/h
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static const double PRECISION_DOWN_THRESHOLD_MPS = 2.22;
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/// Minimum time after first fix before precision switching starts
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static const Duration PRECISION_SWITCH_FIRST_FIX_DELAY = Duration(seconds: 5);
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}
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