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#include <mbgl/map/map.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/std.hpp>
#include <mbgl/util/io.hpp>
#include <rapidjson/document.h>
#include <rapidjson/writer.h>
#include <rapidjson/stringbuffer.h>
#include <mbgl/platform/default/headless_view.hpp>
#include <mbgl/platform/default/headless_display.hpp>
#include <mbgl/storage/caching_http_file_source.hpp>
#if __APPLE__
#include <mbgl/platform/darwin/log_nslog.hpp>
#else
#include <mbgl/platform/default/log_stderr.hpp>
#endif
#include <boost/program_options.hpp>
namespace po = boost::program_options;
#include <cassert>
#include <cstdlib>
#include <iostream>
int main(int argc, char *argv[]) {
std::string style_path;
double lat = 0, lon = 0;
double zoom = 0;
double bearing = 0;
int width = 256;
int height = 256;
double pixelRatio = 1.0;
std::string output = "out.png";
std::string cache = "cache.sqlite";
std::vector<std::string> classes;
std::string token;
po::options_description desc("Allowed options");
desc.add_options()
("style,s", po::value(&style_path)->required()->value_name("json"), "Map stylesheet")
("lon,x", po::value(&lon)->value_name("degrees")->default_value(lon), "Longitude")
("lat,y", po::value(&lat)->value_name("degrees")->default_value(lat), "Latitude in degrees")
("zoom,z", po::value(&zoom)->value_name("number")->default_value(zoom), "Zoom level")
("bearing,b", po::value(&bearing)->value_name("degrees")->default_value(bearing), "Bearing")
("width,w", po::value(&width)->value_name("pixels")->default_value(width), "Image width")
("height,h", po::value(&height)->value_name("pixels")->default_value(height), "Image height")
("class,c", po::value(&classes)->value_name("name"), "Class name")
("token,t", po::value(&token)->value_name("key")->default_value(token), "Mapbox access token")
("output,o", po::value(&output)->value_name("file")->default_value(output), "Output file name")
("cache,d", po::value(&cache)->value_name("file")->default_value(cache), "Cache database file name")
;
try {
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
} catch(std::exception& e) {
std::cout << "Error: " << e.what() << std::endl << desc;
exit(1);
}
std::string style = mbgl::util::read_file(style_path);
using namespace mbgl;
#if __APPLE__
Log::Set<NSLogBackend>();
#else
Log::Set<StderrLogBackend>();
#endif
CachingHTTPFileSource fileSource(cache);
// Try to load the token from the environment.
if (!token.size()) {
const char *token_ptr = getenv("MAPBOX_ACCESS_TOKEN");
if (token_ptr) {
token = token_ptr;
}
}
// Set access token if present
if (token.size()) {
fileSource.setAccessToken(std::string(token));
}
HeadlessView view;
Map map(view, fileSource);
map.setStyleJSON(style, ".");
map.setAppliedClasses(classes);
view.resize(width, height, pixelRatio);
map.resize(width, height, pixelRatio);
map.setLonLatZoom(lon, lat, zoom);
map.setBearing(bearing);
std::unique_ptr<uint32_t[]> pixels;
// Run the loop. It will terminate when we don't have any further listeners.
map.run();
// Get the data from the GPU.
pixels = view.readPixels();
const unsigned int w = width * pixelRatio;
const unsigned int h = height * pixelRatio;
const std::string image = util::compress_png(w, h, pixels.get());
util::write_file(output, image);
}
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