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#pragma once
#include "component.hpp"
namespace kel {
namespace lbm {
namespace cmpt {
struct Stream {};
}
template<typename T, typename Descriptor, typename Encode>
class component<T,Descriptor, cmpt::Stream, Encode> final {
private:
public:
static constexpr saw::string_literal name = "streaming";
static constexpr saw::string_literal after = "collide";
static constexpr saw::string_literal before = "";
template<typename CellFieldSchema>
void apply(const saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
using dfi = df_info<T,Descriptor>;
auto g_index = index;
for(uint64_t i = 0u; i < Descriptor::D; ++i){
++g_index.at({{i}});
}
bool is_even = ((time_step.get() % 2) == 0);
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
auto& dfs_new_f = (is_even) ? field.template get<"dfs">() : field.template get<"dfs_old">();
auto info_f = field.template get<"info">();
auto info_meta = info_f.get_dims();
/*
bool border = false;
for(uint64_t i = 0u; i < Descriptor::D; ++i){
auto ind_i = index.at({i});
border |= (ind_i.get()) == 0u or (ind_i == info_meta.at({i}));
}
if (not border){
}
*/
auto& dfs_new = dfs_new_f.ghost_at(g_index);
for(uint64_t i = 0u; i < Descriptor::Q; ++i){
auto dir = dfi::directions[dfi::opposite_index[i]];
auto g_index_nb = g_index;
for(uint64_t z = 0u; z < Descriptor::D; ++z){
g_index_nb.at({z}).set(g_index.at({z}).get() + dir[z]);
}
dfs_new.at({i}) = dfs_old_f.ghost_at(g_index_nb).at({i});
}
}
};
}
}
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