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Index anything that entirely fits within the tile by its centroid

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This commit is contained in:
Eric Fischer 2014-09-23 13:33:40 -07:00
parent dd8f43a697
commit 454a5dd3c7
1 changed files with 10 additions and 2 deletions

12
geojson.c

@ -456,10 +456,13 @@ void read_json(FILE *f) {
int z = 14;
unsigned cx = bbox[0] / 2 + bbox[2] / 2;
unsigned cy = bbox[1] / 2 + bbox[3] / 2;
/* XXX do proper overlap instead of whole bounding box */
if (z == 0) {
struct index ix;
ix.index = encode(0, 0);
ix.index = encode(cx, cy);
ix.fpos = start;
fwrite_check(&ix, sizeof(struct index), 1, indexfile);
} else {
@ -467,7 +470,12 @@ void read_json(FILE *f) {
for (x = bbox[0] >> (32 - z); x <= bbox[2] >> (32 - z); x++) {
for (y = bbox[1] >> (32 - z); y <= bbox[3] >> (32 - z); y++) {
struct index ix;
ix.index = encode(x << (32 - z), y << (32 - z));
if (x == cx >> (32 - z) && y == cy >> (32 - z)) {
ix.index = encode(cx, cy);
} else {
ix.index = encode(x << (32 - z), y << (32 - z));
}
ix.fpos = start;
fwrite_check(&ix, sizeof(struct index), 1, indexfile);
}