Custom size generator #25
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devindi
commented
Jan 27, 2019
| import com.google.firebase.perf.FirebasePerformance | ||
| import org.osmdroid.util.GeoPoint | ||
| import timber.log.Timber |
devindi
commented
Jan 27, 2019
| package com.devindi.wallpaper.model.map | ||
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| import com.devindi.wallpaper.misc.RectD | ||
| import org.osmdroid.tileprovider.cachemanager.CacheManager |
devindi
commented
Jan 27, 2019
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| // Here is some math magic). Those calculations are taken from OSM wiki | ||
| // https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames | ||
| fun lonToTile(lon: Double, zoom: Int) = (lon + HALF_CIRCLE_DEGREES) / CIRCLE_DEGREES * (1 shl zoom) |
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devindi
commented
Jan 27, 2019
| // https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames | ||
| fun lonToTile(lon: Double, zoom: Int) = (lon + HALF_CIRCLE_DEGREES) / CIRCLE_DEGREES * (1 shl zoom) | ||
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| fun latToTile(lat: Double, zoom: Int): Double = (1 shl zoom) * (1 - (Math.log(Math.tan(Math.toRadians(lat)) + 1 / (Math.cos(Math.toRadians(lat))))) / Math.PI) / 2 |
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Implemented generation of image with custom size ( #4 )