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Add the ability to tippecanoe-decode into EPSG:3857 instead of WGS84

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This commit is contained in:
Eric Fischer
2016-06-28 15:18:27 -07:00
parent e48e2152cc
commit 5d06f01e28
8 changed files with 136 additions and 30 deletions
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projection.hpp
+4
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@@ -1,13 +1,17 @@
void lonlat2tile(double lon, double lat, int zoom, long long *x, long long *y);
void epsg3857totile(double ix, double iy, int zoom, long long *x, long long *y);
void tile2lonlat(long long x, long long y, int zoom, double *lon, double *lat);
void tiletoepsg3857(long long x, long long y, int zoom, double *ox, double *oy);
unsigned long long encode(unsigned int wx, unsigned int wy);
void decode(unsigned long long index, unsigned *wx, unsigned *wy);
void set_projection_or_exit(const char *optarg);
struct projection {
const char *name;
void (*project)(double ix, double iy, int zoom, long long *ox, long long *oy);
void (*unproject)(long long ix, long long iy, int zoom, double *ox, double *oy);
const char *alias;
};
extern struct projection *projection;
extern struct projection projections[];