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Drop more points at each lower zoom level

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This commit is contained in:
Eric Fischer
2014-09-23 14:42:17 -07:00
parent 7fc1c0cd24
commit 91eefcbd16
3 changed files with 24 additions and 4 deletions
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geojson.c
+4 -2
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@@ -14,6 +14,8 @@
#include "jsonpull.h"
#include "tile.h"
#define BASE_ZOOM 14
#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 */
@@ -303,7 +305,7 @@ void check(struct index *ix, long long n, char *metabase, unsigned *file_bbox) {
fprintf(stderr, "\n");
int z;
for (z = 14; z >= 0; z--) {
for (z = BASE_ZOOM; z >= 0; z--) {
struct index *i, *j = NULL;
for (i = ix; i < ix + n && i != NULL; i = j) {
unsigned wx, wy;
@@ -334,7 +336,7 @@ void check(struct index *ix, long long n, char *metabase, unsigned *file_bbox) {
printf("%d/%u/%u %x %x %lld to %lld\n", z, tx, ty, wx, wy, (long long)(i - ix), (long long)(j - ix));
write_tile(i, j, metabase, file_bbox, z, tx, ty, z == 14 ? 12 : 10);
write_tile(i, j, metabase, file_bbox, z, tx, ty, z == BASE_ZOOM ? 12 : 10, BASE_ZOOM);
}
}
}