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#pragma once
#include "common.hpp"
namespace kel {
namespace lbm {
template<typename T, typename Desc, typename Coll>
saw::error_or<void> init(
const converter<T>& conv,
saw::data<sch::ChunkStruct<T,Desc>>& fields,
saw::data<sch::MacroStruct<T,Desc>>& macros,
saw::data<sch::ParticleSpheroidGroup<T,Desc>>& particles
){
(void) conv;
auto& info_f = fields.template get<"info">();
auto& porous_f = macros.template get<"porosity">();
// Set everything as walls
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(1u);
},
{},
info_f.get_dims(),
{}
);
// Fluid
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(2u);
},
{},
info_f.get_dims(),
{{1u,1u}}
);
auto dims = info_f.get_dims();
auto width = dims.at({{0u}});
auto height = dims.at({{1u}});
//
auto w = width.template cast_to<T>();
auto h = height.template cast_to<T>();
auto w2 = w * 0.5;
auto h4 = h * 0.25;
saw::data<T> e{0.1};
saw::data<T> c = saw::data<T>{1.0} - e;
saw::data<T> d{0.2};
auto b = (saw::data<T>{1.0} - d) * 0.5;
auto p_r = (c*c + b*b) / (b*2);
auto p_i = p_r - b;
// Circle Top
saw::data<sch::FixedArray<sch::Int64,2u>> top_pos{w2.get(),h + p_i};
// Circle Bot
saw::data<sch::FixedArray<sch::Int64,2u>> bot_pos{w2.get(),-p_i.get()};
iterator<Desc::D>::apply(
[&](auto& index){
},
{},
info_f.get_dims(),
{}
);
// Inflow
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(3u);
},
{{0u,0u}},
{{1u,dim_y}},
{{0u,1u}}
);
// Outflow
iterator<Desc::D>::apply(
[&](auto& index){
info_f.at(index).set(4u);
},
{{dim_x-1u,0u}},
{{dim_x, dim_y}},
{{0u,1u}}
);
//
auto& df_f = fields.template get<"dfs_old">();
auto& rho_f = macros.template get<"density">();
auto& vel_f = macros.template get<"momentum">();
auto& por_f = macros.template get<"porosity">();
iterator<Desc::D>::apply(
[&](auto& index){
auto& df = df_f.at(index);
auto& rho = rho_f.at(index);
por_f.at(index).at({}) = {1};
rho.at({}) = {1};
auto& vel = vel_f.at(index);
auto eq = equilibrium<T,Desc>(rho,vel);
df = eq;
},
{},// 0-index
df_f.get_dims()
);
iterator<Desc::D>::apply(
[&](auto& index){
auto& df = df_f.at(index);
auto& rho = rho_f.at(index);
rho.at({}) = {1};
auto& vel = vel_f.at(index);
if(info_f.at(index).get() == 2u){
vel.at({{0u}}) = 0.0;
}
auto eq = equilibrium<T,Desc>(rho,vel);
df = eq;
},
{},// 0-index
df_f.get_dims(),
{{1u,1u}}
);
{
saw::data<sch::Scalar<T>> radius_p;
radius_p.at({}).set(conv.meter_si_to_lbm({{0.05}}).handle().get());
std::cout<<"RADIUS: "<<radius_p.at({}).get()<<std::endl;
saw::data<sch::Scalar<T>> dense_p;
dense_p.at({}).set(1);
particles = create_spheroid_particle_group<T,Desc::D,1u>(radius_p, dense_p, {{64u}});
auto& parts = particles.template get<"particles">();
{
auto& p = parts.at({0u});
auto& prb = p.template get<"rigid_body">();
auto& p_pos = prb.template get<"position">();
auto& p_posold = prb.template get<"position_old">();
p_pos.at({{0u}}) = conv.meter_si_to_lbm({{0.16}}).handle();
p_pos.at({{1u}}) = conv.meter_si_to_lbm({{0.2}}).handle();
p_posold = p_pos;
}
}
return saw::make_void();
}
}
}
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