// Helper function to calculate the latitude offset export function calculateLatWithOffset( latitude: number, offsetPx: number, zoomLevel: number ): number { const earthCircumference = 40075017 // Earth's circumference in meters const tileSize = 256 // Height of a tile in pixels (standard in Google Maps) // Calculate ground resolution (meters per pixel) at the given latitude and zoom level const groundResolution = (earthCircumference * Math.cos((latitude * Math.PI) / 180)) / (tileSize * Math.pow(2, zoomLevel)) // Calculate the number of meters for the given offset in pixels const metersOffset = groundResolution * offsetPx // Convert the meters offset into a latitude offset (1 degree latitude is ~111,320 meters) const latOffset = metersOffset / 111320 // Return the new latitude by subtracting the offset return latitude - latOffset }