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#include <mapnik/timer.hpp>
#include <mapnik/util/file_io.hpp>
#include "vector_tile_processor.hpp"
#include "vector_tile_projection.hpp"
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#pragma GCC diagnostic ignored "-Wsign-conversion"
#include "vector_tile.pb.h"
#pragma GCC diagnostic pop
#include <iostream>
#include <fstream>
// mapnik
#include <mapnik/box2d.hpp>
#include <mapnik/datasource_cache.hpp>
#include <mapnik/global.hpp>
#include <mapnik/well_known_srs.hpp>
#include <mapnik/json/geometry_parser.hpp>
#include <mapnik/memory_datasource.hpp>
#include <mapnik/feature_factory.hpp>
#include <mapnik/map.hpp>
#include <mapnik/layer.hpp>
#include <mapnik/request.hpp>
#include <protozero/pbf_reader.hpp>
int main(int argc, char** argv)
{
try
{
if (argc < 4)
{
std::clog << "usage: vtile-encode /path/to/geometry.geojson z x y [-i iterations] [-l layer_count] [-o output_file] [-p epsg_code]\n";
return -1;
}
std::string geojson_file(argv[1]);
int z = std::stoi(argv[2]);
int x = std::stoi(argv[3]);
int y = std::stoi(argv[4]);
std::size_t iterations = 1000;
std::size_t layer_count = 1;
std::size_t layer_extent = 4096;
std::string output_path = "";
std::string layer_projection = "4326";
if (argc > 5)
{
for (int i = 5; i < argc; i++)
{
std::string flag = argv[i];
if (flag == "-i")
{
iterations = std::stoi(argv[i + 1]);
}
if (flag == "-l")
{
layer_count = std::stoi(argv[i + 1]);
}
if (flag == "-o")
{
output_path = argv[i + 1];
}
if (flag == "-p")
{
layer_projection = argv[i + 1];
}
if (flag == "-e")
{
layer_extent = std::stoi(argv[i + 1]);
}
}
}
std::clog << "z:" << z << " x:" << x << " y:" << y << " iterations:" << iterations << std::endl;
mapnik::datasource_cache::instance().register_datasources(MAPNIK_PLUGINDIR);
mapnik::parameters params_1;
params_1["type"] = "geojson";
params_1["file"] = geojson_file;
params_1["cache_features"] = "false";
auto ds_1 = mapnik::datasource_cache::instance().create(params_1);
// Query
mapnik::box2d<double> query_ext(std::numeric_limits<double>::lowest(),
std::numeric_limits<double>::lowest(),
std::numeric_limits<double>::max(),
std::numeric_limits<double>::max());
mapnik::query q(query_ext);
auto json_fs = ds_1->features(q);
// Create memory datasource from geojson
mapnik::parameters params;
params["type"] = "memory";
auto ds = std::make_shared<mapnik::memory_datasource>(params);
if (!json_fs)
{
// No features in geojson so lets try to process it differently as
// it might be a partial geojson and we can use from_geojson
mapnik::util::file input(geojson_file);
if (!input.is_open())
{
std::clog << "failed to open " << geojson_file << std::endl;
return -1;
}
mapnik::geometry::geometry<double> geom;
std::string json_string(input.data().get(), input.size());
if (!mapnik::json::from_geojson(json_string, geom))
{
std::clog << "failed to parse geojson" << std::endl;
return -1;
}
mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
mapnik::feature_ptr feature(mapnik::feature_factory::create(ctx,1));
feature->set_geometry(std::move(geom));
ds->push(feature);
}
else
{
mapnik::feature_ptr feature = json_fs->next();
while (feature)
{
ds->push(feature);
feature = json_fs->next();
}
}
// Create tile
unsigned tile_size = layer_extent;
int buffer_size = 0;
mapnik::box2d<double> bbox = mapnik::vector_tile_impl::tile_mercator_bbox(x, y, z);
// Create a fresh map to render into a tile
mapnik::Map map(tile_size,tile_size,"+init=epsg:3857");
while (layer_count > 0)
{
std::string layer_name = "layer" + std::to_string(layer_count);
std::string layer_proj = "+init=epsg:" + layer_projection;
mapnik::layer lyr(layer_name, layer_proj);
lyr.set_datasource(ds);
map.add_layer(lyr);
--layer_count;
}
map.zoom_to_box(bbox);
// Output buffer
std::string output_buffer;
std::size_t expected_size;
{
mapnik::vector_tile_impl::tile a_tile(bbox, tile_size, buffer_size);
mapnik::vector_tile_impl::processor ren(map);
ren.set_simplify_distance(5.0);
ren.update_tile(a_tile);
a_tile.serialize_to_string(output_buffer);
expected_size = a_tile.size();
}
{
mapnik::progress_timer __stats__(std::clog, std::string("encode tile: ") + geojson_file);
for (std::size_t i = 0; i < iterations; ++i)
{
mapnik::vector_tile_impl::tile a_tile(bbox, tile_size, buffer_size);
mapnik::vector_tile_impl::processor ren(map);
ren.set_simplify_distance(5.0);
ren.update_tile(a_tile);
assert(a_tile.size() == expected_size);
}
}
if (output_path != "")
{
std::ofstream out(output_path);
out << output_buffer;
}
}
catch (std::exception const& ex)
{
std::clog << "error: " << ex.what() << std::endl;
return -1;
}
return 0;
}
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