soroush.asadi
2fb86a435e
ASP.NET Core 10 Razor Pages + PostgreSQL/EF Core. RTL Persian, Jalali dates, self-hosted Vazirmatn, teal/coral brand. Features: - Shift listings: browse/filter (city, district, role, type, pay), weekly Jalali calendar, detail + interest handoff, near-me distance sort - Hiring (استخدام) listings with employment type + salary range - Pattern-engine recommendations + anonymous interest tracking (visitor cookie) - Heuristic Persian listing-parser + admin queue (raw channel post → shift/job) - Phone-OTP cookie auth + visitor-history linking + profile Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
20 lines
736 B
C#
20 lines
736 B
C#
namespace JobsMedical.Web.Services;
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public static class Geo
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{
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private const double EarthRadiusKm = 6371.0;
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/// <summary>Great-circle (Haversine) distance in kilometers between two lat/lng points.</summary>
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public static double DistanceKm(double lat1, double lng1, double lat2, double lng2)
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{
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double dLat = ToRad(lat2 - lat1);
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double dLng = ToRad(lng2 - lng1);
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double a = Math.Sin(dLat / 2) * Math.Sin(dLat / 2)
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+ Math.Cos(ToRad(lat1)) * Math.Cos(ToRad(lat2))
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* Math.Sin(dLng / 2) * Math.Sin(dLng / 2);
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return EarthRadiusKm * 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
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}
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private static double ToRad(double deg) => deg * Math.PI / 180.0;
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}
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