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#include <boost/version.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <iostream>
#include <vector>
#include <algorithm>
#include "utils.hpp"
#if BOOST_VERSION >= 104700
#include <mapnik/layer.hpp>
#include <mapnik/feature_type_style.hpp>
#include <mapnik/debug.hpp>
#include <mapnik/ctrans.hpp>
#include <mapnik/vertex_converters.hpp>
#include <mapnik/geometry.hpp>
#include <mapnik/wkt/wkt_factory.hpp>
#include <mapnik/well_known_srs.hpp>
#include <mapnik/util/geometry_to_wkb.hpp>
#include <mapnik/util/geometry_to_wkt.hpp>
#include <mapnik/util/geometry_to_svg.hpp>
// stl
#include <stdexcept>
struct output_geometry_backend
{
output_geometry_backend(boost::ptr_vector<mapnik::geometry_type> & paths, mapnik::eGeomType type)
: paths_(paths),
type_(type) {}
template <typename T>
void add_path(T & path)
{
mapnik::vertex2d vtx(mapnik::vertex2d::no_init);
path.rewind(0);
std::auto_ptr<mapnik::geometry_type> geom_ptr(new mapnik::geometry_type(type_));
while ((vtx.cmd = path.vertex(&vtx.x, &vtx.y)) != mapnik::SEG_END)
{
//std::cerr << vtx.x << "," << vtx.y << " cmd=" << vtx.cmd << std::endl;
geom_ptr->push_vertex(vtx.x, vtx.y, (mapnik::CommandType)vtx.cmd);
}
paths_.push_back(geom_ptr);
}
boost::ptr_vector<mapnik::geometry_type> & paths_;
mapnik::eGeomType type_;
};
boost::optional<std::string> linestring_bbox_clipping(mapnik::box2d<double> bbox,
std::string wkt_in)
{
using namespace mapnik;
agg::trans_affine tr;
projection src(MAPNIK_LONGLAT_PROJ);
projection dst(MAPNIK_LONGLAT_PROJ);
proj_transform prj_trans(src,dst);
line_symbolizer sym;
CoordTransform t(bbox.width(),bbox.height(), bbox);
boost::ptr_vector<mapnik::geometry_type> output_paths;
output_geometry_backend backend(output_paths, mapnik::LineString);
typedef boost::mpl::vector<clip_line_tag> conv_types;
vertex_converter<box2d<double>, output_geometry_backend, line_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(bbox, backend, sym, t, prj_trans, tr, 1.0);
converter.set<clip_line_tag>();
boost::ptr_vector<geometry_type> p;
if (!mapnik::from_wkt(wkt_in , p))
{
throw std::runtime_error("Failed to parse WKT");
}
BOOST_FOREACH( geometry_type & geom, p)
{
converter.apply(geom);
}
std::string wkt_out;
if (mapnik::util::to_wkt(wkt_out, output_paths))
{
return boost::optional<std::string>(wkt_out);
}
return boost::optional<std::string>();
}
boost::optional<std::string> polygon_bbox_clipping(mapnik::box2d<double> bbox,
std::string wkt_in)
{
using namespace mapnik;
agg::trans_affine tr;
projection src(MAPNIK_LONGLAT_PROJ);
projection dst(MAPNIK_LONGLAT_PROJ);
proj_transform prj_trans(src,dst);
polygon_symbolizer sym;
CoordTransform t(bbox.width(),bbox.height(), bbox);
boost::ptr_vector<mapnik::geometry_type> output_paths;
output_geometry_backend backend(output_paths, mapnik::Polygon);
typedef boost::mpl::vector<clip_poly_tag> conv_types;
vertex_converter<box2d<double>, output_geometry_backend, polygon_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(bbox, backend, sym, t, prj_trans, tr, 1.0);
converter.set<clip_poly_tag>();
boost::ptr_vector<geometry_type> p;
if (!mapnik::from_wkt(wkt_in , p))
{
throw std::runtime_error("Failed to parse WKT");
}
BOOST_FOREACH( geometry_type & geom, p)
{
converter.apply(geom);
}
std::string wkt_out;
if (mapnik::util::to_wkt(wkt_out, output_paths))
{
return boost::optional<std::string>(wkt_out);
}
return boost::optional<std::string>();
}
#endif
int main(int argc, char** argv)
{
std::vector<std::string> args;
for (int i=1;i<argc;++i)
{
args.push_back(argv[i]);
}
bool quiet = std::find(args.begin(), args.end(), "-q")!=args.end();
BOOST_TEST(set_working_dir(args));
#if BOOST_VERSION >= 104700
// LineString/bbox clipping
{
std::string wkt_in("LineString(0 0,200 200)");
boost::optional<std::string> result = linestring_bbox_clipping(mapnik::box2d<double>(50,50,150,150),wkt_in);
BOOST_TEST(result);
BOOST_TEST_EQ(*result,std::string("LineString(50 50,150 150)"));
}
// Polygon/bbox clipping
#if 0
// these tests will fail
{
std::string wkt_in("Polygon((50 50,150 50,150 150,50 150,50 50))");
boost::optional<std::string> result = polygon_bbox_clipping(mapnik::box2d<double>(50,50,150,150),wkt_in);
BOOST_TEST(result);
BOOST_TEST_EQ(*result,std::string("Polygon((50 50,150 50,150 150,50 150,50 50))"));
}
{
std::string wkt_in("Polygon((60 60,140 60,140 160,60 140,60 60))");
boost::optional<std::string> result = polygon_bbox_clipping(mapnik::box2d<double>(50,50,150,150),wkt_in);
BOOST_TEST(result);
BOOST_TEST_EQ(*result,std::string("Polygon((60 60,140 60,140 160,60 140,60 60))"));
}
{
std::string wkt_in("Polygon((0 0,10 0,10 10,0 10,0 0))");
boost::optional<std::string> result = polygon_bbox_clipping(mapnik::box2d<double>(50,50,150,150),wkt_in);
BOOST_TEST(result);
BOOST_TEST_EQ(*result, std::string("GeometryCollection EMPTY"));
}
{
std::string wkt_in("Polygon((0 0,100 200,200 0,0 0 ))");
boost::optional<std::string> result = polygon_bbox_clipping(mapnik::box2d<double>(50,50,150,150),wkt_in);
BOOST_TEST(result);
BOOST_TEST_EQ(*result,std::string("Polygon((50 50,50 100,75 150,125 150,150 100,150 50,50 50))"));
}
#endif
#endif
if (!::boost::detail::test_errors())
{
if (quiet) std::clog << "\x1b[1;32m.\x1b[0m";
else std::clog << "C++ geometry conversions: \x1b[1;32m✓ \x1b[0m\n";
#if BOOST_VERSION >= 104600
::boost::detail::report_errors_remind().called_report_errors_function = true;
#endif
}
else
{
return ::boost::report_errors();
}
}
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