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Add options to specify the base and low-zoom level of detail

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This commit is contained in:
Eric Fischer 2014-09-26 10:52:19 -07:00
parent 528e0575e2
commit 0a8420cc2e
2 changed files with 22 additions and 9 deletions
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29
geojson.c
View File

@ -17,6 +17,9 @@
#include "jsonpull.h"
#include "tile.h"
int low_detail = 10;
int full_detail = 12;
#define GEOM_POINT 0 /* array of positions */
#define GEOM_MULTIPOINT 1 /* array of arrays of positions */
#define GEOM_LINESTRING 2 /* array of arrays of positions */
@ -359,7 +362,7 @@ void check(struct index *ix, long long n, char *metabase, unsigned *file_bbox, s
fprintf(stderr, " %3.1f%% %d/%u/%u %x %x %lld to %lld \r", (((i - ix) + (j - ix)) / 2.0 / n + (maxzoom - z)) / (maxzoom - minzoom + 1) * 100, z, tx, ty, wx, wy, (long long)(i - ix), (long long)(j - ix));
long long len = write_tile(i, j, metabase, file_bbox, z, tx, ty, z == maxzoom ? 12 : 10, maxzoom, file_keys, layername, outdb);
long long len = write_tile(i, j, metabase, file_bbox, z, tx, ty, z == maxzoom ? full_detail : low_detail, maxzoom, file_keys, layername, outdb);
if (z == maxzoom && len > most) {
*midx = tx;
@ -409,7 +412,7 @@ void aprintf(char **buf, const char *format, ...) {
free(tmp);
}
void read_json(FILE *f, char *fname, char *layername, int maxzoom, int minzoom, char *outdir, sqlite3 *outdb) {
void read_json(FILE *f, char *fname, char *layername, int maxzoom, int minzoom, sqlite3 *outdb) {
char metaname[] = "/tmp/meta.XXXXXXXX";
char indexname[] = "/tmp/index.XXXXXXXX";
@ -750,7 +753,7 @@ int main(int argc, char **argv) {
int maxzoom = 14;
int minzoom = 0;
while ((i = getopt(argc, argv, "l:n:z:Z:o:")) != -1) {
while ((i = getopt(argc, argv, "l:n:z:Z:d:D:o:")) != -1) {
switch (i) {
case 'n':
name = optarg;
@ -768,12 +771,20 @@ int main(int argc, char **argv) {
minzoom = atoi(optarg);
break;
case 'd':
full_detail = atoi(optarg);
break;
case 'D':
low_detail = atoi(optarg);
break;
case 'o':
outdir = optarg;
break;
default:
fprintf(stderr, "Usage: %s -o out.mbtiles [-n name] [-l layername] [-z maxzoom] [-Z minzoom] file.json ...\n", argv[0]);
fprintf(stderr, "Usage: %s -o out.mbtiles [-n name] [-l layername] [-z maxzoom] [-Z minzoom] [-d detail] [-D lower-detail] file.json ...\n", argv[0]);
exit(EXIT_FAILURE);
}
}
@ -826,14 +837,12 @@ int main(int argc, char **argv) {
if (f == NULL) {
fprintf(stderr, "%s: %s: %s\n", argv[0], argv[i], strerror(errno));
} else {
// XXX
read_json(f, name ? name : argv[i], layer, maxzoom, minzoom, "tiles", outdb);
read_json(f, name ? name : argv[i], layer, maxzoom, minzoom, outdb);
fclose(f);
}
}
} else {
// XXX
read_json(stdin, name ? name : "standard input", layer, maxzoom, minzoom, "tiles", outdb);
read_json(stdin, name ? name : "standard input", layer, maxzoom, minzoom, outdb);
}
if (sqlite3_exec(outdb, "ANALYZE;", NULL, NULL, &err) != SQLITE_OK) {
@ -844,6 +853,10 @@ int main(int argc, char **argv) {
fprintf(stderr, "%s: index tiles: %s\n", argv[0], err);
exit(EXIT_FAILURE);
}
if (sqlite3_close(outdb) != SQLITE_OK) {
fprintf(stderr, "%s: could not close database: %s\n", argv[0], sqlite3_errmsg(outdb));
exit(EXIT_FAILURE);
}
return 0;
}

2
tile.cc
View File

@ -341,7 +341,7 @@ void douglas_peucker(struct draw *geom, int n, double e) {
}
int simplify_lines(struct draw *geom, int n, int z, int detail) {
int res = 1 << (32 - 10 - z); // 1/4 pixel
int res = 1 << (32 - detail - z);
int i;
for (i = 0; i < n; i++) {