Better geometry sorting.

Divide geometry in separate files in files-container.

1 files changed, 58 insertions, 0 deletions

diff --git a/indexer/feature_impl.hpp b/indexer/feature_impl.hpp
new file mode 100644
index 0000000000..8f7a914ec1
--- /dev/null
+++ b/indexer/feature_impl.hpp
@@ -0,0 +1,58 @@
+#pragma once
+
+#include "cell_id.hpp"
+
+#include "../coding/write_to_sink.hpp"
+#include "../coding/varint.hpp"
+
+#include "../geometry/point2d.hpp"
+
+namespace feature
+{
+  namespace detail
+  {
+    struct pt_2_id
+    {
+      int64_t operator() (m2::PointD const & p) const
+      {
+        return PointToInt64(p.x, p.y);
+      }
+    };
+  }
+
+  template <class TSink>
+  void SerializePoints(vector<m2::PointD> const & points, TSink & sink)
+  {
+    uint32_t const ptsCount = points.size();
+    ASSERT_GREATER_OR_EQUAL(ptsCount, 1, ());
+
+    vector<int64_t> geom;
+    geom.reserve(ptsCount);
+    transform(points.begin(), points.end(), back_inserter(geom), detail::pt_2_id());
+
+    if (ptsCount == 1)
+    {
+      WriteVarInt(sink, geom[0]);
+    }
+    else
+    {
+      WriteVarUint(sink, ptsCount - 1);
+      for (size_t i = 0; i < ptsCount; ++i)
+        WriteVarInt(sink, i == 0 ? geom[0] : geom[i] - geom[i-1]);
+    }
+  }
+
+  template <class TSink>
+  void SerializeTriangles(vector<int64_t> triangles, TSink & sink)
+  {
+    if (!triangles.empty())
+    {
+      ASSERT_EQUAL(triangles.size() % 3, 0, (triangles.size()));
+      WriteVarUint(sink, triangles.size() / 3 - 1);
+      for (size_t i = 0; i < triangles.size(); ++i)
+        WriteVarInt(sink, i == 0 ? triangles[i] : (triangles[i] - triangles[i-1]));
+    }
+  }
+
+  static int g_arrScales[] = { 5, 10, 14, 17 };  // 17 = scales::GetUpperScale()
+}