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Add particle assignment to cells

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This commit is contained in:
Alex Selimov 2025-09-25 23:53:23 -04:00
parent cd4a00ebed
commit ca852c8a51
Signed by: aselimov
GPG key ID: 3DDB9C3E023F1F31
1 changed files with 11 additions and 2 deletions
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13
kernels/neighbor_list.cuh
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@ -76,12 +76,21 @@ struct CellList {
return std::make_pair(grid_size, cell_size); return std::make_pair(grid_size, cell_size);
} }
// Get cell coordinates from position __device__ int3 get_cell_coords_from_position(float3 pos) const {
__device__ int3 get_cell_coords(float3 pos) const {
return make_int3((int)((pos.x - box_min.x) / cell_size.x), return make_int3((int)((pos.x - box_min.x) / cell_size.x),
(int)((pos.y - box_min.y) / cell_size.y), (int)((pos.y - box_min.y) / cell_size.y),
(int)((pos.z - box_min.z) / cell_size.z)); (int)((pos.z - box_min.z) / cell_size.z));
} }
__device__ int get_cell_index_from_position(float3 pos) const {
return get_cell_index_from_cell_coords(get_cell_coords_from_position(pos));
}
__device__ void assign_particles_to_cells(float3 *positions) {
for (int i = 0; i < this->n_particles; i++) {
particle_cells[i] = get_cell_index_from_position(positions[i]);
}
}
}; };
#endif #endif