120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
#include <mbgl/map/map.hpp>
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#include <mbgl/util/image.hpp>
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#include <mbgl/util/std.hpp>
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#include <mbgl/util/io.hpp>
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#include <mbgl/platform/default/headless_view.hpp>
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#include <mbgl/platform/default/headless_display.hpp>
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#include <mbgl/storage/default_file_source.hpp>
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#include <mbgl/storage/default/sqlite_cache.hpp>
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#if __APPLE__
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#include <mbgl/platform/darwin/log_nslog.hpp>
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#else
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#include <mbgl/platform/default/log_stderr.hpp>
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#endif
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#pragma GCC diagnostic push
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#ifndef __clang__
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#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
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#pragma GCC diagnostic ignored "-Wshadow"
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#endif
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#include <boost/program_options.hpp>
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#pragma GCC diagnostic pop
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namespace po = boost::program_options;
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#include <cassert>
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#include <cstdlib>
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#include <iostream>
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int main(int argc, char *argv[]) {
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std::string style_path;
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double lat = 0, lon = 0;
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double zoom = 0;
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double bearing = 0;
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int width = 512;
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int height = 512;
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double pixelRatio = 1.0;
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std::string output = "out.png";
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std::string cache_file = "cache.sqlite";
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std::vector<std::string> classes;
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std::string token;
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po::options_description desc("Allowed options");
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desc.add_options()
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("style,s", po::value(&style_path)->required()->value_name("json"), "Map stylesheet")
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("lon,x", po::value(&lon)->value_name("degrees")->default_value(lon), "Longitude")
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("lat,y", po::value(&lat)->value_name("degrees")->default_value(lat), "Latitude in degrees")
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("zoom,z", po::value(&zoom)->value_name("number")->default_value(zoom), "Zoom level")
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("bearing,b", po::value(&bearing)->value_name("degrees")->default_value(bearing), "Bearing")
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("width,w", po::value(&width)->value_name("pixels")->default_value(width), "Image width")
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("height,h", po::value(&height)->value_name("pixels")->default_value(height), "Image height")
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("class,c", po::value(&classes)->value_name("name"), "Class name")
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("token,t", po::value(&token)->value_name("key")->default_value(token), "Mapbox access token")
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("output,o", po::value(&output)->value_name("file")->default_value(output), "Output file name")
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("cache,d", po::value(&cache_file)->value_name("file")->default_value(cache_file), "Cache database file name")
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;
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try {
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po::variables_map vm;
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po::store(po::parse_command_line(argc, argv, desc), vm);
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po::notify(vm);
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} catch(std::exception& e) {
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std::cout << "Error: " << e.what() << std::endl << desc;
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exit(1);
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}
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std::string style = mbgl::util::read_file(style_path);
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using namespace mbgl;
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#if __APPLE__
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Log::Set<NSLogBackend>();
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#else
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Log::Set<StderrLogBackend>();
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#endif
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mbgl::SQLiteCache cache(cache_file);
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mbgl::DefaultFileSource fileSource(&cache);
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// Try to load the token from the environment.
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if (!token.size()) {
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const char *token_ptr = getenv("MAPBOX_ACCESS_TOKEN");
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if (token_ptr) {
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token = token_ptr;
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}
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}
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HeadlessView view;
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Map map(view, fileSource);
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// Set access token if present
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if (token.size()) {
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map.setAccessToken(std::string(token));
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}
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map.setStyleJSON(style, ".");
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map.setClasses(classes);
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view.resize(width, height, pixelRatio);
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map.resize(width, height, pixelRatio);
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map.setLatLngZoom({ lat, lon }, zoom);
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map.setBearing(bearing);
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// Run the loop. It will terminate when we don't have any further listeners.
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map.run();
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// Get the data from the GPU.
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auto pixels = view.readPixels();
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const unsigned int w = width * pixelRatio;
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const unsigned int h = height * pixelRatio;
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const std::string image = util::compress_png(w, h, pixels.get());
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util::write_file(output, image);
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}
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