2023-09-04 11:13:21 +02:00
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/**
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* Created by VoidArtanis on 11/2/2017
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*/
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package shared
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2023-10-31 07:35:23 +01:00
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import "math"
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2023-09-04 11:13:21 +02:00
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const (
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2023-09-18 12:27:40 +02:00
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RoleAdmin string = "admin"
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2023-09-04 11:13:21 +02:00
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RoleProUser string = "pro-user"
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)
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2023-10-31 07:35:23 +01:00
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func DistanceKm(lat1 float64, lng1 float64, lat2 float64, lng2 float64) float64 {
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radlat1 := float64(math.Pi * lat1 / 180)
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radlat2 := float64(math.Pi * lat2 / 180)
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theta := float64(lng1 - lng2)
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radtheta := float64(math.Pi * theta / 180)
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dist := math.Sin(radlat1)*math.Sin(radlat2) + math.Cos(radlat1)*math.Cos(radlat2)*math.Cos(radtheta)
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if dist > 1 {
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dist = 1
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}
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dist = math.Acos(dist)
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dist = dist * 180 / math.Pi
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dist = dist * 60 * 1.1515
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return dist * 1.609344
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}
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