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#pragma once
#include <forstio/codec/data.hpp>
namespace kel {
namespace lbm {
namespace sch {
using namespace saw::schema;
template<uint64_t DV, uint64_t QV>
struct Descriptor {
static constexpr uint64_t D = DV;
static constexpr uint64_t Q = QV;
};
template<typename Sch, typename Desc, uint64_t SC_V, uint64_t DC_V, uint64_t QC_V>
struct Cell {
using Descriptor = Desc;
static constexpr uint64_t SC = SC_V;
static constexpr uint64_t DC = DC_V;
static constexpr uint64_t QC = QC_V;
static constexpr uint64_t Size = SC + Desc::D * DC + Desc::Q * QC;
};
template<typename Desc, typename CellStruct>
struct Field;
template<typename Desc, typename... CellMembers>
struct Field<
Desc,
Struct<
CellMembers...
>
>;
}
template<typename T, typename Desc>
class df_info{};
template<typename T>
class df_info<T,sch::Descriptor<2, 5>> {
public:
static constexpr uint64_t D = 2u;
static constexpr uint64_t Q = 5u;
static constexpr std::array<std::array<int32_t, D>, Q> directions = {{
{ 0, 0},
{-1, 0},
{ 1, 0},
{ 0,-1},
{ 0, 1},
}};
static constexpr std::array<typename saw::native_data_type<T>::type,Q> weights = {
1./3.,
1./6.,
1./6.,
1./6.,
1./6.
};
static constexpr std::array<uint64_t,Q> opposite_index = {
0,
2,
1,
4,
3
};
static constexpr typename saw::native_data_type<T>::type inv_cs2 = 3.0;
static constexpr typename saw::native_data_type<T>::type cs2 = 1./3.;
};
template<typename T>
class df_info<T,sch::Descriptor<2, 9>> {
public:
static constexpr uint64_t D = 2u;
static constexpr uint64_t Q = 9u;
static constexpr std::array<std::array<int32_t, D>, Q> directions = {{
{ 0, 0},
{-1, 0},
{ 1, 0},
{ 0,-1},
{ 0, 1},
{-1,-1},
{ 1, 1},
{-1, 1},
{ 1,-1}
}};
static constexpr std::array<typename saw::native_data_type<T>::type,Q> weights = {
4./9.,
1./9.,
1./9.,
1./9.,
1./9.,
1./36.,
1./36.,
1./36.,
1./36.
};
static constexpr std::array<uint64_t,Q> opposite_index = {
0,
2,
1,
4,
3,
6,
5,
8,
7
};
static constexpr typename saw::native_data_type<T>::type inv_cs2 = 3.0;
static constexpr typename saw::native_data_type<T>::type cs2 = 1./3.;
};
}
}
namespace saw {
template<typename T, typename Desc, uint64_t S, uint64_t D, uint64_t Q>
struct meta_schema<kel::lbm::sch::Cell<T,Desc,S,D,Q>> {
using MetaSchema = schema::Void;
using Schema = kel::lbm::sch::Cell<T,Desc,S,D,Q>;
};
template<typename Desc, typename CellT>
struct meta_schema<kel::lbm::sch::Field<Desc, CellT>> {
using MetaSchema = schema::FixedArray<schema::UInt64,Desc::D>;
using Schema = kel::lbm::sch::Field<Desc, CellT>;
};
template<typename Sch, typename Desc, uint64_t S, uint64_t D, uint64_t Q, typename Encode>
class data<kel::lbm::sch::Cell<Sch, Desc, S, D, Q>, Encode> final {
public:
using Schema = kel::lbm::sch::Cell<Sch,Desc,S,D,Q>;
using MetaSchema = typename meta_schema<Schema>::MetaSchema;
private:
data<schema::FixedArray<Sch, Schema::Size>, Encode> inner_;
public:
data() = default;
data<Sch, Encode>& operator()(const data<schema::UInt64>& index){
return inner_.at(index);
}
const data<Sch, Encode>& operator()(const data<schema::UInt64>& index)const{
return inner_.at(index);
}
};
template<typename Desc, typename CellT, typename Encode>
class data<kel::lbm::sch::Field<Desc, CellT>, Encode> final {
public:
using Schema = kel::lbm::sch::Field<Desc,CellT>;
using MetaSchema = typename meta_schema<Schema>::MetaSchema;
private:
data<schema::Array<CellT,Desc::D>, Encode> inner_;
public:
data() = default;
data(const data<schema::FixedArray<schema::UInt64, Desc::D>>& inner_meta__):
inner_{inner_meta__}
{}
template<uint64_t i>
data<schema::UInt64,Encode> get_dim_size() const {
static_assert(i < Desc::D, "Not enough dimensions");
return inner_.template get_dim_size<i>();
}
const data<CellT>& operator()(const data<schema::FixedArray<schema::UInt64, Desc::D>, Encode>& index)const{
return inner_.at(index);
}
data<CellT>& operator()(const data<schema::FixedArray<schema::UInt64, Desc::D>, Encode>& index){
return inner_.at(index);
}
};
}
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