mirror of
https://github.com/mapbox/tippecanoe.git
synced 2025-01-21 12:05:05 +00:00
Factor out conversion from vector tile to GeoJSON
This commit is contained in:
Eric Fischer
parent
bdd2632fb7
commit
adfceed554
4
Makefile
4
Makefile
@ -43,13 +43,13 @@ C = $(wildcard *.c) $(wildcard *.cpp)
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INCLUDES = -I/usr/local/include -I.
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LIBS = -L/usr/local/lib
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tippecanoe: geojson.o jsonpull/jsonpull.o tile.o pool.o mbtiles.o geometry.o projection.o memfile.o clipper/clipper.o mvt.o serial.o main.o text.o
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tippecanoe: geojson.o jsonpull/jsonpull.o tile.o pool.o mbtiles.o geometry.o projection.o memfile.o clipper/clipper.o mvt.o serial.o main.o text.o plugin.o
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$(CXX) $(PG) $(LIBS) $(FINAL_FLAGS) $(CXXFLAGS) -o $@ $^ $(LDFLAGS) -lm -lz -lsqlite3 -lpthread
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tippecanoe-enumerate: enumerate.o
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$(CXX) $(PG) $(LIBS) $(FINAL_FLAGS) $(CFLAGS) -o $@ $^ $(LDFLAGS) -lsqlite3
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tippecanoe-decode: decode.o projection.o mvt.o
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tippecanoe-decode: decode.o projection.o mvt.o plugin.o
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$(CXX) $(PG) $(LIBS) $(FINAL_FLAGS) $(CXXFLAGS) -o $@ $^ $(LDFLAGS) -lm -lz -lsqlite3
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tile-join: tile-join.o projection.o pool.o mbtiles.o mvt.o memfile.o
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269
decode.cpp
269
decode.cpp
@ -15,36 +15,7 @@
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#include "mvt.hpp"
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#include "projection.hpp"
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#include "geometry.hpp"
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void printq(const char *s) {
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putchar('"');
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for (; *s; s++) {
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if (*s == '\\' || *s == '"') {
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printf("\\%c", *s);
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} else if (*s >= 0 && *s < ' ') {
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printf("\\u%04x", *s);
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} else {
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putchar(*s);
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}
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}
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putchar('"');
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}
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struct lonlat {
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int op;
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double lon;
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double lat;
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int x;
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int y;
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lonlat(int nop, double nlon, double nlat, int nx, int ny) {
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this->op = nop;
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this->lon = nlon;
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this->lat = nlat;
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this->x = nx;
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this->y = ny;
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}
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};
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#include "plugin.hpp"
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void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
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int within = 0;
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@ -67,7 +38,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
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if (projection != projections) {
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printf(", \"crs\": { \"type\": \"name\", \"properties\": { \"name\": ");
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printq(projection->alias);
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fprintq(stdout, projection->alias);
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printf(" } }");
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}
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}
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@ -76,7 +47,6 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
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for (size_t l = 0; l < tile.layers.size(); l++) {
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mvt_layer &layer = tile.layers[l];
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int extent = layer.extent;
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if (describe) {
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if (l != 0) {
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@ -85,7 +55,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
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printf("{ \"type\": \"FeatureCollection\"");
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printf(", \"properties\": { \"layer\": ");
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printq(layer.name.c_str());
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fprintq(stdout, layer.name.c_str());
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printf(", \"version\": %d, \"extent\": %d", layer.version, layer.extent);
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printf(" }");
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printf(", \"features\": [\n");
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@ -93,234 +63,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
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within = 0;
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}
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for (size_t f = 0; f < layer.features.size(); f++) {
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mvt_feature &feat = layer.features[f];
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if (within) {
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printf(",\n");
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}
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within = 1;
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printf("{ \"type\": \"Feature\"");
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if (feat.has_id) {
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printf(", \"id\": %llu", feat.id);
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}
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printf(", \"properties\": { ");
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for (size_t t = 0; t + 1 < feat.tags.size(); t += 2) {
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if (t != 0) {
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printf(", ");
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}
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if (feat.tags[t] >= layer.keys.size()) {
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fprintf(stderr, "Error: out of bounds feature key\n");
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exit(EXIT_FAILURE);
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}
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if (feat.tags[t + 1] >= layer.values.size()) {
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fprintf(stderr, "Error: out of bounds feature value\n");
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exit(EXIT_FAILURE);
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}
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const char *key = layer.keys[feat.tags[t]].c_str();
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mvt_value const &val = layer.values[feat.tags[t + 1]];
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if (val.type == mvt_string) {
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printq(key);
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printf(": ");
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printq(val.string_value.c_str());
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} else if (val.type == mvt_int) {
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printq(key);
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printf(": %lld", (long long) val.numeric_value.int_value);
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} else if (val.type == mvt_double) {
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printq(key);
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double v = val.numeric_value.double_value;
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if (v == (long long) v) {
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printf(": %lld", (long long) v);
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} else {
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printf(": %g", v);
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}
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} else if (val.type == mvt_float) {
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printq(key);
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double v = val.numeric_value.float_value;
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if (v == (long long) v) {
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printf(": %lld", (long long) v);
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} else {
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printf(": %g", v);
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}
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} else if (val.type == mvt_sint) {
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printq(key);
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printf(": %lld", (long long) val.numeric_value.sint_value);
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} else if (val.type == mvt_uint) {
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printq(key);
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printf(": %lld", (long long) val.numeric_value.uint_value);
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} else if (val.type == mvt_bool) {
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printq(key);
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printf(": %s", val.numeric_value.bool_value ? "true" : "false");
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}
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}
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printf(" }, \"geometry\": { ");
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std::vector<lonlat> ops;
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for (size_t g = 0; g < feat.geometry.size(); g++) {
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int op = feat.geometry[g].op;
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long long px = feat.geometry[g].x;
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long long py = feat.geometry[g].y;
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if (op == VT_MOVETO || op == VT_LINETO) {
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long long scale = 1LL << (32 - z);
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long long wx = scale * x + (scale / extent) * px;
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long long wy = scale * y + (scale / extent) * py;
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double lat, lon;
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projection->unproject(wx, wy, 32, &lon, &lat);
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ops.push_back(lonlat(op, lon, lat, px, py));
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} else {
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ops.push_back(lonlat(op, 0, 0, 0, 0));
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}
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}
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if (feat.type == VT_POINT) {
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if (ops.size() == 1) {
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printf("\"type\": \"Point\", \"coordinates\": [ %f, %f ]", ops[0].lon, ops[0].lat);
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} else {
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printf("\"type\": \"MultiPoint\", \"coordinates\": [ ");
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for (size_t i = 0; i < ops.size(); i++) {
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if (i != 0) {
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printf(", ");
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}
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printf("[ %f, %f ]", ops[i].lon, ops[i].lat);
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}
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printf(" ]");
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}
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} else if (feat.type == VT_LINE) {
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int movetos = 0;
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for (size_t i = 0; i < ops.size(); i++) {
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if (ops[i].op == VT_MOVETO) {
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movetos++;
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}
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}
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if (movetos < 2) {
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printf("\"type\": \"LineString\", \"coordinates\": [ ");
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for (size_t i = 0; i < ops.size(); i++) {
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if (i != 0) {
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printf(", ");
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}
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printf("[ %f, %f ]", ops[i].lon, ops[i].lat);
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}
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printf(" ]");
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} else {
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printf("\"type\": \"MultiLineString\", \"coordinates\": [ [ ");
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int state = 0;
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for (size_t i = 0; i < ops.size(); i++) {
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if (ops[i].op == VT_MOVETO) {
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if (state == 0) {
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printf("[ %f, %f ]", ops[i].lon, ops[i].lat);
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state = 1;
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} else {
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printf(" ], [ ");
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printf("[ %f, %f ]", ops[i].lon, ops[i].lat);
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state = 1;
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}
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} else {
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printf(", [ %f, %f ]", ops[i].lon, ops[i].lat);
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}
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}
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printf(" ] ]");
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}
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} else if (feat.type == VT_POLYGON) {
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std::vector<std::vector<lonlat> > rings;
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std::vector<double> areas;
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for (size_t i = 0; i < ops.size(); i++) {
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if (ops[i].op == VT_MOVETO) {
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rings.push_back(std::vector<lonlat>());
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areas.push_back(0);
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}
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int n = rings.size() - 1;
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if (n >= 0) {
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if (ops[i].op == VT_CLOSEPATH) {
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rings[n].push_back(rings[n][0]);
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} else {
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rings[n].push_back(ops[i]);
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}
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}
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}
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int outer = 0;
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for (size_t i = 0; i < rings.size(); i++) {
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long double area = 0;
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for (size_t k = 0; k < rings[i].size(); k++) {
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if (rings[i][k].op != VT_CLOSEPATH) {
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area += rings[i][k].x * rings[i][(k + 1) % rings[i].size()].y;
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area -= rings[i][k].y * rings[i][(k + 1) % rings[i].size()].x;
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}
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}
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areas[i] = area;
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if (areas[i] >= 0 || i == 0) {
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outer++;
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}
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// printf("area %f\n", area / .00000274 / .00000274);
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}
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if (outer > 1) {
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printf("\"type\": \"MultiPolygon\", \"coordinates\": [ [ [ ");
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} else {
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printf("\"type\": \"Polygon\", \"coordinates\": [ [ ");
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}
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int state = 0;
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for (size_t i = 0; i < rings.size(); i++) {
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if (areas[i] >= 0) {
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if (state != 0) {
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// new multipolygon
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printf(" ] ], [ [ ");
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}
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state = 1;
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}
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if (state == 2) {
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// new ring in the same polygon
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printf(" ], [ ");
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}
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for (size_t j = 0; j < rings[i].size(); j++) {
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if (rings[i][j].op != VT_CLOSEPATH) {
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if (j != 0) {
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printf(", ");
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}
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printf("[ %f, %f ]", rings[i][j].lon, rings[i][j].lat);
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} else {
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if (j != 0) {
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printf(", ");
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}
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printf("[ %f, %f ]", rings[i][0].lon, rings[i][0].lat);
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}
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}
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state = 2;
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}
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if (outer > 1) {
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printf(" ] ] ]");
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} else {
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printf(" ] ]");
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}
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}
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printf(" } }\n");
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}
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layer_to_geojson(stdout, layer, z, x, y);
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if (describe) {
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printf("] }\n");
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@ -389,9 +132,9 @@ void decode(char *fname, int z, unsigned x, unsigned y) {
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const unsigned char *name = sqlite3_column_text(stmt2, 0);
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const unsigned char *value = sqlite3_column_text(stmt2, 1);
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printq((char *) name);
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fprintq(stdout, (char *) name);
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printf(": ");
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printq((char *) value);
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fprintq(stdout, (char *) value);
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}
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sqlite3_finalize(stmt2);
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269
plugin.cpp
Normal file
269
plugin.cpp
Normal file
@ -0,0 +1,269 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <vector>
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#include <string>
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#include <map>
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#include "mvt.hpp"
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#include "plugin.hpp"
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#include "projection.hpp"
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#include "geometry.hpp"
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struct lonlat {
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int op;
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double lon;
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double lat;
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int x;
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int y;
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lonlat(int nop, double nlon, double nlat, int nx, int ny) {
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this->op = nop;
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this->lon = nlon;
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this->lat = nlat;
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this->x = nx;
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this->y = ny;
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}
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};
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void layer_to_geojson(FILE *fp, mvt_layer &layer, unsigned z, unsigned x, unsigned y) {
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for (size_t f = 0; f < layer.features.size(); f++) {
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mvt_feature &feat = layer.features[f];
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if (f != 0) {
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fprintf(fp, ",\n");
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}
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fprintf(fp, "{ \"type\": \"Feature\"");
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if (feat.has_id) {
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fprintf(fp, ", \"id\": %llu", feat.id);
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}
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fprintf(fp, ", \"properties\": { ");
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for (size_t t = 0; t + 1 < feat.tags.size(); t += 2) {
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if (t != 0) {
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fprintf(fp, ", ");
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}
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if (feat.tags[t] >= layer.keys.size()) {
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fprintf(stderr, "Error: out of bounds feature key\n");
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exit(EXIT_FAILURE);
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}
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if (feat.tags[t + 1] >= layer.values.size()) {
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fprintf(stderr, "Error: out of bounds feature value\n");
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exit(EXIT_FAILURE);
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}
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const char *key = layer.keys[feat.tags[t]].c_str();
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mvt_value const &val = layer.values[feat.tags[t + 1]];
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if (val.type == mvt_string) {
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fprintq(fp, key);
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fprintf(fp, ": ");
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fprintq(fp, val.string_value.c_str());
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} else if (val.type == mvt_int) {
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fprintq(fp, key);
|
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fprintf(fp, ": %lld", (long long) val.numeric_value.int_value);
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} else if (val.type == mvt_double) {
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fprintq(fp, key);
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double v = val.numeric_value.double_value;
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if (v == (long long) v) {
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fprintf(fp, ": %lld", (long long) v);
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} else {
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fprintf(fp, ": %g", v);
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}
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} else if (val.type == mvt_float) {
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fprintq(fp, key);
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double v = val.numeric_value.float_value;
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if (v == (long long) v) {
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fprintf(fp, ": %lld", (long long) v);
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} else {
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fprintf(fp, ": %g", v);
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}
|
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} else if (val.type == mvt_sint) {
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fprintq(fp, key);
|
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fprintf(fp, ": %lld", (long long) val.numeric_value.sint_value);
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} else if (val.type == mvt_uint) {
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fprintq(fp, key);
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fprintf(fp, ": %lld", (long long) val.numeric_value.uint_value);
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} else if (val.type == mvt_bool) {
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fprintq(fp, key);
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fprintf(fp, ": %s", val.numeric_value.bool_value ? "true" : "false");
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}
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}
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fprintf(fp, " }, \"geometry\": { ");
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|
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std::vector<lonlat> ops;
|
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|
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for (size_t g = 0; g < feat.geometry.size(); g++) {
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int op = feat.geometry[g].op;
|
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long long px = feat.geometry[g].x;
|
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long long py = feat.geometry[g].y;
|
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|
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if (op == VT_MOVETO || op == VT_LINETO) {
|
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long long scale = 1LL << (32 - z);
|
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long long wx = scale * x + (scale / layer.extent) * px;
|
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long long wy = scale * y + (scale / layer.extent) * py;
|
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|
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double lat, lon;
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projection->unproject(wx, wy, 32, &lon, &lat);
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ops.push_back(lonlat(op, lon, lat, px, py));
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} else {
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ops.push_back(lonlat(op, 0, 0, 0, 0));
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}
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}
|
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|
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if (feat.type == VT_POINT) {
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if (ops.size() == 1) {
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fprintf(fp, "\"type\": \"Point\", \"coordinates\": [ %f, %f ]", ops[0].lon, ops[0].lat);
|
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} else {
|
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fprintf(fp, "\"type\": \"MultiPoint\", \"coordinates\": [ ");
|
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for (size_t i = 0; i < ops.size(); i++) {
|
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if (i != 0) {
|
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fprintf(fp, ", ");
|
||||
}
|
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fprintf(fp, "[ %f, %f ]", ops[i].lon, ops[i].lat);
|
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}
|
||||
fprintf(fp, " ]");
|
||||
}
|
||||
} else if (feat.type == VT_LINE) {
|
||||
int movetos = 0;
|
||||
for (size_t i = 0; i < ops.size(); i++) {
|
||||
if (ops[i].op == VT_MOVETO) {
|
||||
movetos++;
|
||||
}
|
||||
}
|
||||
|
||||
if (movetos < 2) {
|
||||
fprintf(fp, "\"type\": \"LineString\", \"coordinates\": [ ");
|
||||
for (size_t i = 0; i < ops.size(); i++) {
|
||||
if (i != 0) {
|
||||
fprintf(fp, ", ");
|
||||
}
|
||||
fprintf(fp, "[ %f, %f ]", ops[i].lon, ops[i].lat);
|
||||
}
|
||||
fprintf(fp, " ]");
|
||||
} else {
|
||||
fprintf(fp, "\"type\": \"MultiLineString\", \"coordinates\": [ [ ");
|
||||
int state = 0;
|
||||
for (size_t i = 0; i < ops.size(); i++) {
|
||||
if (ops[i].op == VT_MOVETO) {
|
||||
if (state == 0) {
|
||||
fprintf(fp, "[ %f, %f ]", ops[i].lon, ops[i].lat);
|
||||
state = 1;
|
||||
} else {
|
||||
fprintf(fp, " ], [ ");
|
||||
fprintf(fp, "[ %f, %f ]", ops[i].lon, ops[i].lat);
|
||||
state = 1;
|
||||
}
|
||||
} else {
|
||||
fprintf(fp, ", [ %f, %f ]", ops[i].lon, ops[i].lat);
|
||||
}
|
||||
}
|
||||
fprintf(fp, " ] ]");
|
||||
}
|
||||
} else if (feat.type == VT_POLYGON) {
|
||||
std::vector<std::vector<lonlat> > rings;
|
||||
std::vector<double> areas;
|
||||
|
||||
for (size_t i = 0; i < ops.size(); i++) {
|
||||
if (ops[i].op == VT_MOVETO) {
|
||||
rings.push_back(std::vector<lonlat>());
|
||||
areas.push_back(0);
|
||||
}
|
||||
|
||||
int n = rings.size() - 1;
|
||||
if (n >= 0) {
|
||||
if (ops[i].op == VT_CLOSEPATH) {
|
||||
rings[n].push_back(rings[n][0]);
|
||||
} else {
|
||||
rings[n].push_back(ops[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int outer = 0;
|
||||
|
||||
for (size_t i = 0; i < rings.size(); i++) {
|
||||
long double area = 0;
|
||||
for (size_t k = 0; k < rings[i].size(); k++) {
|
||||
if (rings[i][k].op != VT_CLOSEPATH) {
|
||||
area += rings[i][k].x * rings[i][(k + 1) % rings[i].size()].y;
|
||||
area -= rings[i][k].y * rings[i][(k + 1) % rings[i].size()].x;
|
||||
}
|
||||
}
|
||||
|
||||
areas[i] = area;
|
||||
if (areas[i] >= 0 || i == 0) {
|
||||
outer++;
|
||||
}
|
||||
|
||||
// fprintf(fp, "area %f\n", area / .00000274 / .00000274);
|
||||
}
|
||||
|
||||
if (outer > 1) {
|
||||
fprintf(fp, "\"type\": \"MultiPolygon\", \"coordinates\": [ [ [ ");
|
||||
} else {
|
||||
fprintf(fp, "\"type\": \"Polygon\", \"coordinates\": [ [ ");
|
||||
}
|
||||
|
||||
int state = 0;
|
||||
for (size_t i = 0; i < rings.size(); i++) {
|
||||
if (areas[i] >= 0) {
|
||||
if (state != 0) {
|
||||
// new multipolygon
|
||||
fprintf(fp, " ] ], [ [ ");
|
||||
}
|
||||
state = 1;
|
||||
}
|
||||
|
||||
if (state == 2) {
|
||||
// new ring in the same polygon
|
||||
fprintf(fp, " ], [ ");
|
||||
}
|
||||
|
||||
for (size_t j = 0; j < rings[i].size(); j++) {
|
||||
if (rings[i][j].op != VT_CLOSEPATH) {
|
||||
if (j != 0) {
|
||||
fprintf(fp, ", ");
|
||||
}
|
||||
|
||||
fprintf(fp, "[ %f, %f ]", rings[i][j].lon, rings[i][j].lat);
|
||||
} else {
|
||||
if (j != 0) {
|
||||
fprintf(fp, ", ");
|
||||
}
|
||||
|
||||
fprintf(fp, "[ %f, %f ]", rings[i][0].lon, rings[i][0].lat);
|
||||
}
|
||||
}
|
||||
|
||||
state = 2;
|
||||
}
|
||||
|
||||
if (outer > 1) {
|
||||
fprintf(fp, " ] ] ]");
|
||||
} else {
|
||||
fprintf(fp, " ] ]");
|
||||
}
|
||||
}
|
||||
|
||||
fprintf(fp, " } }\n");
|
||||
}
|
||||
}
|
||||
|
||||
void fprintq(FILE *fp, const char *s) {
|
||||
fputc('"', fp);
|
||||
for (; *s; s++) {
|
||||
if (*s == '\\' || *s == '"') {
|
||||
fprintf(fp, "\\%c", *s);
|
||||
} else if (*s >= 0 && *s < ' ') {
|
||||
fprintf(fp, "\\u%04x", *s);
|
||||
} else {
|
||||
fputc(*s, fp);
|
||||
}
|
||||
}
|
||||
fputc('"', fp);
|
||||
}
|
||||
2
plugin.hpp
Normal file
2
plugin.hpp
Normal file
@ -0,0 +1,2 @@
|
||||
void layer_to_geojson(FILE *fp, mvt_layer &layer, unsigned z, unsigned x, unsigned y);
|
||||
void fprintq(FILE *f, const char *s);
|
||||
Loading…
Reference in New Issue
Block a user