1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
#include <mbgl/map/map.hpp>
#include <mbgl/map/still_image.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/platform/default/headless_view.hpp>
#include <mbgl/platform/default/headless_display.hpp>
#include <mbgl/platform/log.hpp>
#include <mbgl/storage/default_file_source.hpp>
#include <mbgl/storage/sqlite_cache.hpp>
#pragma clang diagnostic push
#pragma GCC diagnostic push
#ifdef __clang__
#pragma clang diagnostic ignored "-Wunused-local-typedefs"
#else
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#pragma GCC diagnostic ignored "-Wshadow"
#endif
#include <boost/program_options.hpp>
#pragma GCC diagnostic pop
#pragma clang diagnostic pop
namespace po = boost::program_options;
#include <uv.h>
#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 = 512;
int height = 512;
double pixelRatio = 1.0;
static std::string output = "out.png";
std::string cache_file = "cache.sqlite";
std::vector<std::string> classes;
std::string token;
bool debug = false;
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")
("debug", po::bool_switch(&debug)->default_value(debug), "Debug mode")
("output,o", po::value(&output)->value_name("file")->default_value(output), "Output file name")
("cache,d", po::value(&cache_file)->value_name("file")->default_value(cache_file), "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;
mbgl::SQLiteCache cache(cache_file);
mbgl::DefaultFileSource 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(pixelRatio, width, height);
Map map(view, fileSource, MapMode::Still);
map.setStyleJSON(style, ".");
map.setClasses(classes);
map.setLatLngZoom({ lat, lon }, zoom);
map.setBearing(bearing);
if (debug) {
map.setDebug(debug);
}
uv_async_t *async = new uv_async_t;
uv_async_init(uv_default_loop(), async, [](uv_async_t *as, int) {
std::unique_ptr<const StillImage> image(reinterpret_cast<const StillImage *>(as->data));
uv_close(reinterpret_cast<uv_handle_t *>(as), [](uv_handle_t *handle) {
delete reinterpret_cast<uv_async_t *>(handle);
});
const std::string png = util::compress_png(image->width, image->height, image->pixels.get());
util::write_file(output, png);
});
map.renderStill([async](std::exception_ptr error, std::unique_ptr<const StillImage> image) {
try {
if (error) {
std::rethrow_exception(error);
}
} catch(std::exception& e) {
std::cout << "Error: " << e.what() << std::endl;
exit(1);
}
async->data = const_cast<StillImage *>(image.release());
uv_async_send(async);
});
// This loop will terminate once the async was fired.
uv_run(uv_default_loop(), UV_RUN_DEFAULT);
}
|
