diegoripley/tippecanoe
1
0
Fork 0
mirror of https://github.com/felt/tippecanoe.git synced 2026-10-02 16:35:40 +02:00
Code Issues Packages Projects Releases Wiki Activity

Serialize features into memory rather than straight to disk

Browse Source
This commit is contained in:
Erica Fischer
2023-01-24 12:19:58 -08:00
parent 4c52aeacf1
commit 21c946dd49
4 changed files with 76 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files
main.cpp
+7 -3
View File
@@ -327,8 +327,12 @@ static void merge(struct mergelist *merges, size_t nmerges, unsigned char *map,
while (head != NULL) {
struct index ix = *((struct index *) (map + head->start));
long long pos = *geompos;
fwrite_check(geom_map + ix.start, 1, ix.end - ix.start, geom_out, "merge geometry");
*geompos += ix.end - ix.start;
// MAGIC: This knows that the feature minzoom is the last byte of the serialized feature
// and is writing one byte less and then adding the byte for the minzoom.
fwrite_check(geom_map + ix.start, 1, ix.end - ix.start - 1, geom_out, "merge geometry");
*geompos += ix.end - ix.start - 1;
int feature_minzoom = calc_feature_minzoom(&ix, ds, maxzoom, gamma);
serialize_byte(geom_out, feature_minzoom, geompos, "merge geometry");
@@ -1950,7 +1954,7 @@ std::pair<int, metadata> read_input(std::vector<source> &sources, char *fname, i
radix(readers, CPUS, geomfile, indexfile, tmpdir, &geompos, maxzoom, basezoom, droprate, gamma);
/* end of tile */
serialize_byte(geomfile, -2, &geompos, fname);
serialize_ulong_long(geomfile, 0, &geompos, fname); // EOF
if (fclose(geomfile) != 0) {
perror("fclose geom");