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Move code around so overzoom can link against parse_layers

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This commit is contained in:
Erica Fischer
2024-08-21 13:45:38 -07:00
parent c91e07aaa6
commit 58143b4815
8 changed files with 329 additions and 328 deletions
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plugin.cpp
+1 -177
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@@ -74,182 +74,6 @@ void *run_writer(void *a) {
return NULL;
}
// XXX deduplicate
static std::vector<mvt_geometry> to_feature(drawvec &geom) {
std::vector<mvt_geometry> out;
for (size_t i = 0; i < geom.size(); i++) {
out.push_back(mvt_geometry(geom[i].op, geom[i].x, geom[i].y));
}
return out;
}
std::vector<mvt_layer> parse_layers(FILE *fp, int z, unsigned x, unsigned y, int extent) {
std::map<std::string, mvt_layer> ret;
std::shared_ptr<std::string> tile_stringpool = std::make_shared<std::string>();
json_pull *jp = json_begin_file(fp);
while (1) {
json_object *j = json_read(jp);
if (j == NULL) {
if (jp->error != NULL) {
fprintf(stderr, "Filter output:%d: %s: ", jp->line, jp->error);
if (jp->root != NULL) {
json_context(jp->root);
} else {
fprintf(stderr, "\n");
}
exit(EXIT_JSON);
}
json_free(jp->root);
break;
}
json_object *type = json_hash_get(j, "type");
if (type == NULL || type->type != JSON_STRING) {
continue;
}
if (strcmp(type->value.string.string, "Feature") != 0) {
continue;
}
json_object *geometry = json_hash_get(j, "geometry");
if (geometry == NULL) {
fprintf(stderr, "Filter output:%d: filtered feature with no geometry: ", jp->line);
json_context(j);
json_free(j);
exit(EXIT_JSON);
}
json_object *properties = json_hash_get(j, "properties");
if (properties == NULL || (properties->type != JSON_HASH && properties->type != JSON_NULL)) {
fprintf(stderr, "Filter output:%d: feature without properties hash: ", jp->line);
json_context(j);
json_free(j);
exit(EXIT_JSON);
}
json_object *geometry_type = json_hash_get(geometry, "type");
if (geometry_type == NULL) {
fprintf(stderr, "Filter output:%d: null geometry (additional not reported): ", jp->line);
json_context(j);
exit(EXIT_JSON);
}
if (geometry_type->type != JSON_STRING) {
fprintf(stderr, "Filter output:%d: geometry type is not a string: ", jp->line);
json_context(j);
exit(EXIT_JSON);
}
json_object *coordinates = json_hash_get(geometry, "coordinates");
if (coordinates == NULL || coordinates->type != JSON_ARRAY) {
fprintf(stderr, "Filter output:%d: feature without coordinates array: ", jp->line);
json_context(j);
exit(EXIT_JSON);
}
int t;
for (t = 0; t < GEOM_TYPES; t++) {
if (strcmp(geometry_type->value.string.string, geometry_names[t]) == 0) {
break;
}
}
if (t >= GEOM_TYPES) {
fprintf(stderr, "Filter output:%d: Can't handle geometry type %s: ", jp->line, geometry_type->value.string.string);
json_context(j);
exit(EXIT_JSON);
}
std::string layername = "unknown";
json_object *tippecanoe = json_hash_get(j, "tippecanoe");
json_object *layer = NULL;
if (tippecanoe != NULL) {
layer = json_hash_get(tippecanoe, "layer");
if (layer != NULL && layer->type == JSON_STRING) {
layername = std::string(layer->value.string.string);
}
}
if (ret.count(layername) == 0) {
mvt_layer l;
l.name = layername;
l.version = 2;
l.extent = extent;
ret.insert(std::pair<std::string, mvt_layer>(layername, l));
}
auto l = ret.find(layername);
drawvec dv;
parse_geometry(t, coordinates, dv, VT_MOVETO, "Filter output", jp->line, j);
if (mb_geometry[t] == VT_POLYGON) {
dv = fix_polygon(dv);
}
// Scale and offset geometry from global to tile
for (size_t i = 0; i < dv.size(); i++) {
long long scale = 1LL << (32 - z);
dv[i].x = std::round((dv[i].x - scale * x) * extent / (double) scale);
dv[i].y = std::round((dv[i].y - scale * y) * extent / (double) scale);
}
if (mb_geometry[t] == VT_POLYGON) {
// we can try scaling up because these are tile coordinates
dv = clean_or_clip_poly(dv, 0, 0, false, true);
if (dv.size() < 3) {
dv.clear();
}
}
dv = remove_noop(dv, mb_geometry[t], 0);
if (mb_geometry[t] == VT_POLYGON) {
dv = close_poly(dv);
}
if (dv.size() > 0) {
mvt_feature feature;
feature.type = mb_geometry[t];
feature.geometry = to_feature(dv);
json_object *id = json_hash_get(j, "id");
if (id != NULL && id->type == JSON_NUMBER) {
feature.id = id->value.number.number;
if (id->value.number.large_unsigned > 0) {
feature.id = id->value.number.large_unsigned;
}
feature.has_id = true;
}
for (size_t i = 0; i < properties->value.object.length; i++) {
serial_val sv = stringify_value(properties->value.object.values[i], "Filter output", jp->line, j);
// Nulls can be excluded here because this is the postfilter
// and it is nearly time to create the vector representation
if (sv.type != mvt_null) {
mvt_value v = stringified_to_mvt_value(sv.type, sv.s.c_str(), tile_stringpool);
l->second.tag(feature, std::string(properties->value.object.keys[i]->value.string.string), v);
}
}
l->second.features.push_back(feature);
}
json_free(j);
}
json_end(jp);
std::vector<mvt_layer> final;
for (auto a : ret) {
final.push_back(a.second);
}
return final;
}
// Reads from the postfilter
std::vector<mvt_layer> parse_layers(int fd, int z, unsigned x, unsigned y, std::vector<std::map<std::string, layermap_entry>> *layermaps, size_t tiling_seg, std::vector<std::vector<std::string>> *layer_unmaps, int extent) {
FILE *f = fdopen(fd, "r");
@@ -401,7 +225,7 @@ serial_feature parse_feature(json_pull *jp, int z, unsigned x, unsigned y, std::
drawvec dv;
parse_geometry(t, coordinates, dv, VT_MOVETO, "Filter output", jp->line, j);
if (mb_geometry[t] == VT_POLYGON) {
dv = fix_polygon(dv);
dv = fix_polygon(dv, false, false);
}
// Scale and offset geometry from global to tile