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#pragma once
#include "../particle.hpp"
namespace kel {
namespace lbm {
template<typename T>
class particle_circle_geometry {
private:
public:
particle_circle_geometry()
{}
template<typename MT>
saw::data<sch::ParticleMask<MT,2>> generate_mask(uint64_t resolution, uint64_t boundary_nodes = 0) const {
saw::data<sch::ParticleMask<MT,2>> mask;
auto& grid = mask.template get<"grid">();
//uint64_t rad_i = static_cast<uint64_t>(resolution * radius_.get())+1u;
uint64_t rad_i = resolution;
uint64_t size = rad_i + 2*boundary_nodes;
grid = {{{size,size}}};
saw::data<T> delta_x{2.0 / rad_i};
saw::data<T> center = (saw::data<T>{1.0} + saw::data<T>{2.0} * saw::data<T>{static_cast<saw::native_data_type<T>::type>(boundary_nodes)/rad_i});
for(uint64_t i = 0; i < size; ++i){
for(uint64_t j = 0; j < size; ++j){
grid.at({{i,j}}).set(0);
if(i >= boundary_nodes and j >= boundary_nodes and i < (rad_i + boundary_nodes) and j < (rad_i + boundary_nodes) ){
saw::data<T> fi = saw::data<T>{0.5+static_cast<saw::native_data_type<T>::type>(i)} * delta_x - center;
saw::data<T> fj = saw::data<T>{0.5+static_cast<saw::native_data_type<T>::type>(j)} * delta_x - center;
auto norm_f_ij = fi*fi + fj*fj;
if(norm_f_ij.get() <= 1){
grid.at({{i,j}}).set(1);
}
}
}
}
return mask;
}
};
}
}
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