mirror of
https://github.com/cosmo-sims/monofonIC.git
synced 2024-09-19 17:03:45 +02:00
150 lines
5.6 KiB
C++
150 lines
5.6 KiB
C++
#pragma once
|
|
|
|
namespace particle {
|
|
|
|
enum lattice{
|
|
lattice_sc=0, lattice_bcc=1, lattice_fcc=2
|
|
};
|
|
|
|
template<typename field_t>
|
|
void initialize_lattice( container& particles, lattice lattice_type, const field_t& field ){
|
|
const size_t num_p_in_load = field.local_size();
|
|
const size_t overload = 1<<lattice_type; // 1 for sc, 2 for bcc, 4 for fcc
|
|
|
|
particles.allocate( overload * num_p_in_load );
|
|
|
|
for( size_t i=0,ipcount=0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k,++ipcount){
|
|
for( size_t iload=0; iload<overload; ++iload ){
|
|
particles.set_id( ipcount+iload*num_p_in_load, overload*field.get_cell_idx_1d(i,j,k)+iload );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// invalidates field, phase shifted to unspecified position after return
|
|
template<typename field_t>
|
|
void set_positions( container& particles, lattice lattice_type, int idim, real_t lunit, field_t& field )
|
|
{
|
|
const size_t num_p_in_load = field.local_size();
|
|
|
|
for( size_t i=0,ipcount=0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
auto pos = field.template get_unit_r<real_t>(i,j,k);
|
|
particles.set_pos( ipcount++, idim, pos[idim]*lunit + field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
|
|
if( lattice_type == particle::lattice_bcc ){
|
|
field.shift_field( 0.5, 0.5, 0.5 );
|
|
auto ipcount0 = num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
auto pos = field.template get_unit_r_shifted<real_t>(i,j,k,0.5,0.5,0.5);
|
|
particles.set_pos( ipcount++, idim, pos[idim]*lunit + field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if( lattice_type == particle::lattice_fcc ){
|
|
// 0.5 0.5 0.0
|
|
field.shift_field( 0.5, 0.5, 0.0 );
|
|
auto ipcount0 = num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
auto pos = field.template get_unit_r_shifted<real_t>(i,j,k,0.5,0.5,0.0);
|
|
particles.set_pos( ipcount++, idim, pos[idim]*lunit + field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
// 0.0 0.5 0.5
|
|
field.shift_field( -0.5, 0.0, 0.5 );
|
|
ipcount0 = 2*num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
auto pos = field.template get_unit_r_shifted<real_t>(i,j,k,0.0,0.5,0.5);
|
|
particles.set_pos( ipcount++, idim, pos[idim]*lunit + field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
// 0.5 0.0 0.5
|
|
field.shift_field( 0.5, -0.5, 0.0 );
|
|
ipcount0 = 3*num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
auto pos = field.template get_unit_r_shifted<real_t>(i,j,k,0.5,0.0,0.5);
|
|
particles.set_pos( ipcount++, idim, pos[idim]*lunit + field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template<typename field_t>
|
|
void set_velocities( container& particles, lattice lattice_type, int idim, field_t& field )
|
|
{
|
|
const size_t num_p_in_load = field.local_size();
|
|
|
|
for( size_t i=0,ipcount=0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
particles.set_vel( ipcount++, idim, field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
|
|
if( lattice_type == particle::lattice_bcc ){
|
|
field.shift_field( 0.5, 0.5, 0.5 );
|
|
auto ipcount0 = num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
particles.set_vel( ipcount++, idim, field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if( lattice_type == particle::lattice_fcc ){
|
|
// 0.5 0.5 0.0
|
|
field.shift_field( 0.5, 0.5, 0.0 );
|
|
auto ipcount0 = num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
particles.set_vel( ipcount++, idim, field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
// 0.0 0.5 0.5
|
|
field.shift_field( -0.5, 0.0, 0.5 );
|
|
ipcount0 = 2*num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
particles.set_vel( ipcount++, idim, field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
// 0.5 0.0 0.5
|
|
field.shift_field( 0.5, -0.5, 0.0 );
|
|
ipcount0 = 3*num_p_in_load;
|
|
for( size_t i=0,ipcount=ipcount0; i<field.size(0); ++i ){
|
|
for( size_t j=0; j<field.size(1); ++j){
|
|
for( size_t k=0; k<field.size(2); ++k){
|
|
particles.set_vel( ipcount++, idim, field.relem(i,j,k) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
} // end namespace particles
|