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#pragma once
#include "indexer/geometry_coding.hpp"
#include "indexer/tesselator_decl.hpp"
#include "indexer/coding_params.hpp"
#include "geometry/point2d.hpp"
#include "coding/point_to_integer.hpp"
#include "coding/reader.hpp"
#include "coding/varint.hpp"
#include "coding/writer.hpp"
#include "base/buffer_vector.hpp"
#include "base/stl_add.hpp"
#include "std/algorithm.hpp"
#include "std/bind.hpp"
#include "std/list.hpp"
namespace serial
{
template <class TCont, class TSink>
inline void WriteVarUintArray(TCont const & v, TSink & sink)
{
for (size_t i = 0; i != v.size(); ++i)
WriteVarUint(sink, v[i]);
}
/// @name Encode and Decode function types.
//@{
typedef void (*EncodeFunT)(geo_coding::InPointsT const &,
m2::PointU const &, m2::PointU const &,
geo_coding::OutDeltasT &);
typedef void (*DecodeFunT)(geo_coding::InDeltasT const &,
m2::PointU const &, m2::PointU const &,
geo_coding::OutPointsT &);
//@}
typedef buffer_vector<uint64_t, 32> DeltasT;
typedef buffer_vector<m2::PointD, 32> OutPointsT;
void Encode(EncodeFunT fn, vector<m2::PointD> const & points, CodingParams const & params,
DeltasT & deltas);
/// @name Overloads for different out container types.
//@{
void Decode(DecodeFunT fn, DeltasT const & deltas, CodingParams const & params,
OutPointsT & points, size_t reserveF = 1);
void Decode(DecodeFunT fn, DeltasT const & deltas, CodingParams const & params,
vector<m2::PointD> & points, size_t reserveF = 1);
//@}
template <class TSink>
void SavePoint(TSink & sink, m2::PointD const & pt, CodingParams const & cp)
{
WriteVarUint(sink, EncodeDelta(PointD2PointU(pt, cp.GetCoordBits()), cp.GetBasePoint()));
}
template <class TSource>
m2::PointD LoadPoint(TSource & src, CodingParams const & cp)
{
m2::PointD const pt = PointU2PointD(
DecodeDelta(ReadVarUint<uint64_t>(src), cp.GetBasePoint()), cp.GetCoordBits());
return pt;
}
template <class TSink>
void SaveInner(EncodeFunT fn, vector<m2::PointD> const & points,
CodingParams const & params, TSink & sink)
{
DeltasT deltas;
Encode(fn, points, params, deltas);
WriteVarUintArray(deltas, sink);
}
template <class TSink>
void WriteBufferToSink(vector<char> const & buffer, TSink & sink)
{
uint32_t const count = static_cast<uint32_t>(buffer.size());
WriteVarUint(sink, count);
sink.Write(&buffer[0], count);
}
template <class TSink>
void SaveOuter(EncodeFunT fn, vector<m2::PointD> const & points,
CodingParams const & params, TSink & sink)
{
DeltasT deltas;
Encode(fn, points, params, deltas);
vector<char> buffer;
MemWriter<vector<char> > writer(buffer);
WriteVarUintArray(deltas, writer);
WriteBufferToSink(buffer, sink);
}
void const * LoadInner(DecodeFunT fn, void const * pBeg, size_t count,
CodingParams const & params, OutPointsT & points);
template <class TSource, class TPoints>
void LoadOuter(DecodeFunT fn, TSource & src, CodingParams const & params,
TPoints & points, size_t reserveF = 1)
{
uint32_t const count = ReadVarUint<uint32_t>(src);
vector<char> buffer(count);
char * p = &buffer[0];
src.Read(p, count);
DeltasT deltas;
deltas.reserve(count / 2);
ReadVarUint64Array(p, p + count, MakeBackInsertFunctor(deltas));
Decode(fn, deltas, params, points, reserveF);
}
/// @name Paths.
//@{
template <class TSink>
void SaveInnerPath(vector<m2::PointD> const & points, CodingParams const & params, TSink & sink)
{
SaveInner(&geo_coding::EncodePolyline, points, params, sink);
}
template <class TSink>
void SaveOuterPath(vector<m2::PointD> const & points, CodingParams const & params, TSink & sink)
{
SaveOuter(&geo_coding::EncodePolyline, points, params, sink);
}
inline void const * LoadInnerPath(void const * pBeg, size_t count, CodingParams const & params,
OutPointsT & points)
{
return LoadInner(&geo_coding::DecodePolyline, pBeg, count, params, points);
}
template <class TSource, class TPoints>
void LoadOuterPath(TSource & src, CodingParams const & params, TPoints & points)
{
LoadOuter(&geo_coding::DecodePolyline, src, params, points);
}
//@}
/// @name Triangles.
//@{
template <class TSink>
void SaveInnerTriangles(vector<m2::PointD> const & points,
CodingParams const & params, TSink & sink)
{
SaveInner(&geo_coding::EncodeTriangleStrip, points, params, sink);
}
inline void const * LoadInnerTriangles(void const * pBeg, size_t count,
CodingParams const & params, OutPointsT & points)
{
return LoadInner(&geo_coding::DecodeTriangleStrip, pBeg, count, params, points);
}
class TrianglesChainSaver
{
using TPoint = m2::PointU;
using TEdge = tesselator::Edge;
using TBuffer = vector<char>;
TPoint m_base;
TPoint m_max;
list<TBuffer> m_buffers;
public:
explicit TrianglesChainSaver(CodingParams const & params);
TPoint GetBasePoint() const { return m_base; }
TPoint GetMaxPoint() const { return m_max; }
void operator() (TPoint arr[3], vector<TEdge> edges);
size_t GetBufferSize() const
{
size_t sz = 0;
for (auto const & i : m_buffers)
sz += i.size();
return sz;
}
template <class TSink> void Save(TSink & sink)
{
// Not necessary assumption that 3-bytes varuint
// is enough for triangle chains count.
size_t const count = m_buffers.size();
CHECK_LESS_OR_EQUAL(count, 0x1FFFFF, ());
WriteVarUint(sink, static_cast<uint32_t>(count));
for_each(m_buffers.begin(), m_buffers.end(), bind(&WriteBufferToSink<TSink>, _1, ref(sink)));
}
};
void DecodeTriangles(geo_coding::InDeltasT const & deltas,
m2::PointU const & basePoint,
m2::PointU const & maxPoint,
geo_coding::OutPointsT & triangles);
template <class TSource>
void LoadOuterTriangles(TSource & src, CodingParams const & params, OutPointsT & triangles)
{
uint32_t const count = ReadVarUint<uint32_t>(src);
for (uint32_t i = 0; i < count; ++i)
LoadOuter(&DecodeTriangles, src, params, triangles, 3);
}
//@}
}
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