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36 lines
1.4 KiB
Go
36 lines
1.4 KiB
Go
/*
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Package geo provides earth geometry functions and constants.
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Copyright (c) 2018 - 2025 PhotoPrism UG. All rights reserved.
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This program is free software: you can redistribute it and/or modify
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it under Version 3 of the GNU Affero General Public License (the "AGPL"):
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<https://docs.photoprism.app/license/agpl>
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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The AGPL is supplemented by our Trademark and Brand Guidelines,
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which describe how our Brand Assets may be used:
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<https://www.photoprism.app/trademark>
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Feel free to send an email to hello@photoprism.app if you have questions,
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want to support our work, or just want to say hello.
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Additional information can be found in our Developer Guide:
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<https://docs.photoprism.app/developer-guide/>
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*/
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package geo
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const (
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// AverageEarthRadiusKm is the global-average earth radius in km.
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AverageEarthRadiusKm = 6371.0
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// AverageEarthRadiusMeter is the global-average earth radius in meters.
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AverageEarthRadiusMeter = AverageEarthRadiusKm * 1000.0
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// WGS84EarthRadiusKm is the WGS84 equatorial earth radius in km.
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WGS84EarthRadiusKm = 6378.137
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// WGS84EarthRadiusMeter is the WGS84 equatorial earth radius in meters.
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WGS84EarthRadiusMeter = WGS84EarthRadiusKm * 1000.0
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)
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