blob: 4c24850f3a413bba7a0f1dccbb936dd8b42a1afe [file] [log] [blame]
#include "rapidjson/document.h"
#include "rapidjson/prettywriter.h"
#include <delaunator.hpp>
#include "./utils.hpp"
#include <cstdio>
#include <fstream>
#include <vector>
#include <initializer_list>
#include <iostream>
std::string serialize_to_json(delaunator::Delaunator const& delaunator) {
rapidjson::StringBuffer sb;
rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(sb);
writer.StartObject();
writer.String("type"); writer.String("FeatureCollection");
writer.String("crs");
writer.StartObject();
writer.String("type"); writer.String("name");
writer.String("properties");
writer.StartObject();
writer.String("name"); writer.String("urn:ogc:def:crs:EPSG::900913");
writer.EndObject();
writer.EndObject();
writer.String("features");
writer.StartArray();
for(std::size_t i = 0; i < delaunator.triangles.size(); i+=3) {
writer.StartObject();
writer.String("type"); writer.String("Feature");
writer.String("properties"); writer.StartObject(); writer.EndObject();
writer.String("geometry");
writer.StartObject();
writer.String("type"); writer.String("Polygon");
writer.String("coordinates");
writer.StartArray();
writer.StartArray();
writer.StartArray();
writer.Double(delaunator.coords[2 * delaunator.triangles[i]]);
writer.Double(delaunator.coords[2 * delaunator.triangles[i] + 1]);
writer.EndArray();
writer.StartArray();
writer.Double(delaunator.coords[2 * delaunator.triangles[i + 1]]);
writer.Double(delaunator.coords[2 * delaunator.triangles[i + 1] + 1]);
writer.EndArray();
writer.StartArray();
writer.Double(delaunator.coords[2 * delaunator.triangles[i + 2]]);
writer.Double(delaunator.coords[2 * delaunator.triangles[i + 2] + 1]);
writer.EndArray();
writer.StartArray();
writer.Double(delaunator.coords[2 * delaunator.triangles[i]]);
writer.Double(delaunator.coords[2 * delaunator.triangles[i] + 1]);
writer.EndArray();
writer.EndArray();
writer.EndArray();
writer.EndObject();
writer.EndObject();
}
writer.EndArray();
writer.EndObject();
return std::string(sb.GetString());
}
int main(int, char* argv[]) {
const char* filename = argv[1];
const char* output = argv[2];
std::string json = utils::read_file(filename);
std::vector<double> coords = utils::get_geo_json_points(json);
delaunator::Delaunator delaunator(coords);
const char* out_json = serialize_to_json(delaunator).c_str();
if (output) {
printf("Writing to file %s", output);
std::ofstream stream;
stream.open(output);
stream << out_json;
stream.close();
} else {
std::puts(out_json);
}
return 0;
}