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Was still truncating instead of rounding in projection

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Erica Fischer
2023-09-07 16:31:32 -07:00
parent 81d1a7ec9a
commit 9c3ed8e331
71 changed files with 4601 additions and 4484 deletions
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projection.cpp
+4 -4
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@@ -57,8 +57,8 @@ void lonlat2tile(double lon, double lat, int zoom, long long *x, long long *y) {
double lat_rad = lat * M_PI / 180;
unsigned long long n = 1LL << zoom;
long long llx = n * ((lon + 180) / 360);
long long lly = n * (1 - (log(tan(lat_rad) + 1 / cos(lat_rad)) / M_PI)) / 2;
long long llx = std::round(n * ((lon + 180) / 360));
long long lly = std::round(n * (1 - (log(tan(lat_rad) + 1 / cos(lat_rad)) / M_PI)) / 2);
*x = llx;
*y = lly;
@@ -84,8 +84,8 @@ void epsg3857totile(double ix, double iy, int zoom, long long *x, long long *y)
ix = 40000000.0;
}
*x = ix * (1LL << 31) / 6378137.0 / M_PI + (1LL << 31);
*y = ((1LL << 32) - 1) - (iy * (1LL << 31) / 6378137.0 / M_PI + (1LL << 31));
*x = std::round(ix * (1LL << 31) / 6378137.0 / M_PI + (1LL << 31));
*y = std::round(((1LL << 32) - 1) - (iy * (1LL << 31) / 6378137.0 / M_PI + (1LL << 31)));
if (zoom != 0) {
*x = std::round((double) *x / (1LL << (32 - zoom)));