[generator] Added generation popularity src.

1 files changed, 38 insertions, 0 deletions

diff --git a/generator/boost_helpers.hpp b/generator/boost_helpers.hpp
new file mode 100644
index 0000000000..e116b8cb47
--- /dev/null
+++ b/generator/boost_helpers.hpp
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "generator/feature_builder.hpp"
+
+#include <iterator>
+
+#include <boost/geometry.hpp>
+
+namespace generator
+{
+namespace boost_helpers
+{
+template <typename BoostPoint, typename BoostGeometry, typename FbGeometry>
+void FillBoostGeometry(BoostGeometry & geometry, FbGeometry const & fbGeometry)
+{
+  geometry.reserve(fbGeometry.size());
+  for (auto const & p : fbGeometry)
+    boost::geometry::append(geometry, BoostPoint{p.x, p.y});
+}
+
+template <typename BoostPolygon>
+void FillPolygon(BoostPolygon & polygon, FeatureBuilder1 const & fb)
+{
+  using BoostPoint = typename BoostPolygon::point_type;
+  auto const & fbGeometry = fb.GetGeometry();
+  CHECK(!fbGeometry.empty(), ());
+  auto it = std::begin(fbGeometry);
+  FillBoostGeometry<BoostPoint>(polygon.outer(), *it);
+  polygon.inners().resize(fbGeometry.size() - 1);
+  int i = 0;
+  ++it;
+  for (; it != std::end(fbGeometry); ++it)
+    FillBoostGeometry<BoostPoint>(polygon.inners()[i++], *it);
+
+  boost::geometry::correct(polygon);
+}
+}  // namespace boost_helpers
+}  // namespace generator