Fix rendering at the poles

[grits] / src / gis-tile.c

diff --git a/src/gis-tile.c b/src/gis-tile.c
index e265e05342b12c1bb2d8d07d60a4ccf30e4edfb3..61403347d83567a78b614c1c2913f9a44a89c4f9 100644 (file)
--- a/src/gis-tile.c
+++ b/src/gis-tile.c
@@ -142,6 +142,13 @@ GisTile *gis_tile_find(GisTile *self, gdouble lat, gdouble lon)
        gint    row = lat_offset / lat_step;
        gint    col = lon_offset / lon_step;
 
+       if (lon == 180) col--;
+       if (lat == -90) row--;
+
+       //if (lon == 180 || lon == -180)
+       //      g_message("lat=%f,lon=%f step=%f,%f off=%f,%f row=%d/%d,col=%d/%d",
+       //              lat,lon, lat_step,lon_step, lat_offset,lon_offset, row,rows,col,cols);
+
        if (row < 0 || row >= rows || col < 0 || col >= cols)
                return NULL;
        else if (self->children[row][col] && self->children[row][col]->data)