peclet::core::amr::BarnesHut< Dim, Bits > Class Template Reference

#include <barnes_hut.hpp>

Public Types
using	Octree = BlockOctree< Dim, Bits >
using	M = typename Octree::M
using	Code = typename Octree::Code
using	Coord = typename Octree::Coord

Public Member Functions
void	build (const std::vector< Vec< Dim > > &pos, const std::vector< double > &mass, const AmrGeometry< Dim > &geo, unsigned lmax, double theta, double soft=1e-3)
	Build the tree from particle positions (+ masses) inside the world box described by geo (origin + h0; the box spans 2^lmax fine cells per axis).
Vec< Dim >	acceleration (Index pi) const
	Approximate acceleration on particle pi.
std::vector< Vec< Dim > >	accelerations () const
Vec< Dim >	accelerationDirect (Index pi) const
	Direct O(N^2) reference acceleration on particle pi (for validation).
const Octree &	octree () const

Detailed Description

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>
class peclet::core::amr::BarnesHut< Dim, Bits >

Definition at line 32 of file barnes_hut.hpp.

Member Typedef Documentation

Octree

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

using peclet::core::amr::BarnesHut< Dim, Bits >::Octree = BlockOctree<Dim, Bits>

Definition at line 34 of file barnes_hut.hpp.

M

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

using peclet::core::amr::BarnesHut< Dim, Bits >::M = typename Octree::M

Definition at line 35 of file barnes_hut.hpp.

Code

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

using peclet::core::amr::BarnesHut< Dim, Bits >::Code = typename Octree::Code

Definition at line 36 of file barnes_hut.hpp.

Coord

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

using peclet::core::amr::BarnesHut< Dim, Bits >::Coord = typename Octree::Coord

Definition at line 37 of file barnes_hut.hpp.

Member Function Documentation

build()

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

void peclet::core::amr::BarnesHut< Dim, Bits >::build ( const std::vector< Vec< Dim > > &  pos, const std::vector< double > &  mass, const AmrGeometry< Dim > &  geo, unsigned  lmax, double  theta, double  soft = 1e-3  )

inline

Build the tree from particle positions (+ masses) inside the world box described by geo (origin + h0; the box spans 2^lmax fine cells per axis).

Definition at line 41 of file barnes_hut.hpp.

References peclet::core::amr::BlockOctree< Dim, Bits >::code(), peclet::core::amr::BlockOctree< Dim, Bits >::init(), peclet::core::amr::BlockOctree< Dim, Bits >::level(), peclet::core::amr::BlockOctree< Dim, Bits >::numLeaves(), and peclet::core::amr::BlockOctree< Dim, Bits >::refineIf().

acceleration()

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

Vec< Dim > peclet::core::amr::BarnesHut< Dim, Bits >::acceleration ( Index  pi ) const

inline

Approximate acceleration on particle pi.

Definition at line 104 of file barnes_hut.hpp.

Referenced by peclet::core::amr::BarnesHut< Dim, Bits >::accelerations().

accelerations()

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

std::vector< Vec< Dim > > peclet::core::amr::BarnesHut< Dim, Bits >::accelerations ( ) const

inline

Definition at line 110 of file barnes_hut.hpp.

References peclet::core::amr::BarnesHut< Dim, Bits >::acceleration().

accelerationDirect()

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

Vec< Dim > peclet::core::amr::BarnesHut< Dim, Bits >::accelerationDirect ( Index  pi ) const

inline

Direct O(N^2) reference acceleration on particle pi (for validation).

Definition at line 118 of file barnes_hut.hpp.

octree()

template<int Dim = 3, unsigned Bits = (Dim == 2 ? 32u : (Dim == 3 ? 21u : 16u))>

const Octree & peclet::core::amr::BarnesHut< Dim, Bits >::octree ( ) const

inline

Definition at line 126 of file barnes_hut.hpp.

---

The documentation for this class was generated from the following file:

• barnes_hut.hpp