Files
tippecanoe/projection.hpp
T
Erica Fischer bc3ef87c3f Add --generate-variable-depth-tile-pyramid option (#251)
* Track output position at the file level instead of within each tile

* Track file position where the child tile data begins

* Add option and document its intended behavior

* Changing the detail loop to account for stopping early

* I forgot I already added an option for this

* Stop early if we can make a complete tile

* Add a test of zoom truncation with limited feature count

* Forgot to commit the actual code change

* Make room for a vertex count in the header of each serialized tile

* Estimate tile complexity; don't try truncating when unlikely to work

* Be more conservative, because ever retrying a tile is a big speed hit

* If stopping early, don't simplify or clean; leave that to overzoom

* Add tiny polygon reduction / dust to overzoom

* Don't try to stop early in the children if we dropped anything by rate

* Fflush here too before pwriting

* Don't stop early if we ended up dropping any features.

Rework the can-the-next-zoom-stop-early logic to avoid going
one zoom further than needed.

* Fix warning

* Fix warnings

* Oops, checking for the wrong expected return value

* Cleanup from adding line simplification in overzoom

* Current (wrong) behavior when combining coalescing and truncating

* Keep a list of parent tiles to skip rather than truncating

* Now the coalesced tiles in z12 get children in z13

* Don't double-count feature dropping when the zoom level is retried

* Correct README description

* Remove todo about special case below basezoom, which is accounted for

* Be a little more aggressive in drop-densest determination

* Scale tile feature limit for megatiles in the same way as byte limit

* Fully deprecate -detect-shared-borders into an alias

* Track the distances found in the douglas-peucker recursion

* Serialize and deserialize the distance with the vertices

* Revert "Serialize and deserialize the distance with the vertices"

This reverts commit 753f1b7909.

* Revert "Track the distances found in the douglas-peucker recursion"

This reverts commit e5361f8c22.

* Revert "Fully deprecate -detect-shared-borders into an alias"

This reverts commit 0698aeb766.

* Better tracking of whether we failed to make a full-detail tile

* Put a bloom filter in front of the binary search for shared nodes

* Forgot to take out this printf

* Improve dispatch of tiling tasks

* Still dispatch the biggest tasks first

* Track zoom truncation in the strategies list in the tileset metadata

* Prescan for small deltas before doing proper simplification

* Revert "Prescan for small deltas before doing proper simplification"

This reverts commit d1d8238b83.

* Update version and changelog

* Rename to --generate-variable-depth-tile-pyramid
2024-08-06 16:05:52 -07:00

32 lines
1.2 KiB
C++

#ifndef PROJECTION_HPP
#define PROJECTION_HPP
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);
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[];
extern unsigned long long (*encode_index)(unsigned int wx, unsigned int wy);
extern void (*decode_index)(unsigned long long index, unsigned *wx, unsigned *wy);
unsigned long long encode_quadkey(unsigned int wx, unsigned int wy);
void decode_quadkey(unsigned long long index, unsigned *wx, unsigned *wy);
unsigned long long encode_hilbert(unsigned int wx, unsigned int wy);
void decode_hilbert(unsigned long long index, unsigned *wx, unsigned *wy);
unsigned long long encode_vertex(unsigned int wx, unsigned int wy);
#endif