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Factor out geometry fixups

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This commit is contained in:
Eric Fischer 2017-08-23 12:48:45 -07:00
parent 6caf20b9c8
commit b114e22d39
1 changed files with 17 additions and 16 deletions
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33
geojson.cpp
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@ -40,8 +40,10 @@
int serialize_feature(struct serialization_state *sst, serial_feature &sf, bool want_dist, bool filters, int maxzoom, bool uses_gamma);
static long long parse_geometry1(struct serialization_state *sst, int t, json_object *j, long long *bbox, drawvec &geom, int op, json_object *feature, long long &prev, long long &offset, bool &has_prev) {
parse_geometry(t, j, geom, op, sst->fname, sst->line, feature);
static long long scale_geometry(struct serialization_state *sst, long long *bbox, drawvec &geom) {
long long offset = 0;
long long prev = 0;
bool has_prev = false;
for (size_t i = 0; i < geom.size(); i++) {
if (geom[i].op == VT_MOVETO || geom[i].op == VT_LINETO) {
@ -200,8 +202,6 @@ int serialize_geometry(struct serialization_state *sst, json_object *geometry, j
}
}
long long bbox[] = {LLONG_MAX, LLONG_MAX, LLONG_MIN, LLONG_MIN};
if (!filters) {
if (tippecanoe_layername.size() != 0) {
if (layermap->count(tippecanoe_layername) == 0) {
@ -283,15 +283,8 @@ int serialize_geometry(struct serialization_state *sst, json_object *geometry, j
}
}
bool has_prev = false;
long long prev = 0;
long long offset = 0;
drawvec dv;
parse_geometry1(sst, t, coordinates, bbox, dv, VT_MOVETO, feature, prev, offset, has_prev);
if (mb_geometry[t] == VT_POLYGON) {
dv = fix_polygon(dv);
}
parse_geometry(t, coordinates, dv, VT_MOVETO, sst->fname, sst->line, feature);
serial_feature sf;
sf.layer = layer;
@ -308,10 +301,6 @@ int serialize_geometry(struct serialization_state *sst, json_object *geometry, j
sf.feature_minzoom = 0; // Will be filled in during index merging
sf.seq = *(sst->layer_seq);
for (size_t i = 0; i < 4; i++) {
sf.bbox[i] = bbox[i];
}
for (size_t i = 0; i < m; i++) {
sf.full_keys.push_back(metakey[i]);
@ -328,6 +317,18 @@ int serialize_geometry(struct serialization_state *sst, json_object *geometry, j
int serialize_feature(struct serialization_state *sst, serial_feature &sf, bool want_dist, bool filters, int maxzoom, bool uses_gamma) {
struct reader *r = &(sst->readers[sst->segment]);
sf.bbox[0] = LLONG_MAX;
sf.bbox[1] = LLONG_MAX;
sf.bbox[2] = LLONG_MIN;
sf.bbox[3] = LLONG_MIN;
scale_geometry(sst, sf.bbox, sf.geometry);
// This has to happen after scaling so that the wraparound detection has happened first.
// Otherwise the inner/outer calculation will be confused by bad geometries.
if (sf.t == VT_POLYGON) {
sf.geometry = fix_polygon(sf.geometry);
}
if (want_dist) {
std::vector<unsigned long long> locs;
for (size_t i = 0; i < sf.geometry.size(); i++) {