b5739cb72e
* merge trails function added * fix conflict resolve issues * avoid incorrect authorship when merging trail comments * require edit access for all selected trails before merge * fix likes checkbox binding in trail merge modal * improve error handling * require editable target and deletable sources for merge * avoid duplicate trail fetch during merge * prevent duplicate likes when merging trails * check photo download responses during trail merge * add merge completion toast notifications * cleanup * small fixes * move merge code to backend, option to merge single trail selection with similar one, automatic merge for integrations add as option, maintenance page to find and merge similar trails added * fix build error * fix * docu, beautifying, refactoring --------- Co-authored-by: Flomp <Flomp@users.noreply.github.com>
19 lines
503 B
Go
19 lines
503 B
Go
package util
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import "math"
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func HaversineDistanceMeters(lat1 float64, lon1 float64, lat2 float64, lon2 float64) float64 {
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const earthRadius = 6371000.0
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lat1Rad := lat1 * math.Pi / 180
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lat2Rad := lat2 * math.Pi / 180
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dLat := (lat2 - lat1) * math.Pi / 180
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dLon := (lon2 - lon1) * math.Pi / 180
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sinLat := math.Sin(dLat / 2)
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sinLon := math.Sin(dLon / 2)
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h := sinLat*sinLat + math.Cos(lat1Rad)*math.Cos(lat2Rad)*sinLon*sinLon
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return 2 * earthRadius * math.Atan2(math.Sqrt(h), math.Sqrt(1-h))
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}
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