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14 lines
551 B
C++
14 lines
551 B
C++
void lonlat2tile(double lon, double lat, int zoom, long long *x, long long *y);
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void epsg3857totile(double ix, double iy, int zoom, long long *x, long long *y);
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void tile2lonlat(long long x, long long y, int zoom, double *lon, double *lat);
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unsigned long long encode(unsigned int wx, unsigned int wy);
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void decode(unsigned long long index, unsigned *wx, unsigned *wy);
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struct projection {
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const char *name;
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void (*project)(double ix, double iy, int zoom, long long *ox, long long *oy);
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const char *alias;
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};
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extern struct projection *projection;
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