74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
#include "bench_framework.hpp"
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#include <mapnik/box2d.hpp>
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#include <mapnik/projection.hpp>
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#include <mapnik/proj_transform.hpp>
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class test : public benchmark::test_case
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{
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std::string src_;
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std::string dest_;
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mapnik::box2d<double> from_;
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mapnik::box2d<double> to_;
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bool defer_proj4_init_;
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public:
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test(mapnik::parameters const& params,
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std::string const& src,
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std::string const& dest,
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mapnik::box2d<double> const& from,
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mapnik::box2d<double> const& to,
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bool defer_proj)
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: test_case(params),
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src_(src),
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dest_(dest),
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from_(from),
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to_(to),
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defer_proj4_init_(defer_proj) {}
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bool validate() const
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{
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mapnik::projection src(src_,defer_proj4_init_);
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mapnik::projection dest(dest_,defer_proj4_init_);
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mapnik::proj_transform tr(src,dest);
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mapnik::box2d<double> bbox = from_;
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if (!tr.forward(bbox)) return false;
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return ((std::fabs(bbox.minx() - to_.minx()) < .5) &&
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(std::fabs(bbox.maxx() - to_.maxx()) < .5) &&
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(std::fabs(bbox.miny() - to_.miny()) < .5) &&
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(std::fabs(bbox.maxy() - to_.maxy()) < .5)
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);
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}
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bool operator()() const
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{
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for (std::size_t i=0;i<iterations_;++i)
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{
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for (int j=-180;j<180;j=j+5)
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{
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for (int k=-85;k<85;k=k+5)
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{
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mapnik::projection src(src_,defer_proj4_init_);
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mapnik::projection dest(dest_,defer_proj4_init_);
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mapnik::proj_transform tr(src,dest);
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mapnik::box2d<double> box(j,k,j,k);
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if (!tr.forward(box)) throw std::runtime_error("could not transform coords");
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}
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}
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}
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return true;
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}
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};
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// echo -180 -60 | cs2cs -f "%.10f" +init=epsg:4326 +to +init=epsg:3857
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int main(int argc, char** argv)
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{
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mapnik::box2d<double> from(-180,-80,180,80);
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mapnik::box2d<double> to(-20037508.3427892476,-15538711.0963092316,20037508.3427892476,15538711.0963092316);
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std::string from_str("+init=epsg:4326");
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std::string to_str("+init=epsg:3857");
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std::string from_str2("+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs");
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std::string to_str2("+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over");
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return benchmark::sequencer(argc, argv)
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.run<test>("lonlat->merc epsg", from_str, to_str, from, to, true)
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.run<test>("lonlat->merc literal", from_str2, to_str2, from, to, true)
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.run<test>("merc->lonlat epsg", to_str, from_str, to, from, true)
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.run<test>("merc->lonlat literal", to_str2, from_str2, to, from, true)
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.done();
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}
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