NanoflannMeshAdaptor< Dim > Class Template Reference

This allows us to adapt the MeshBase class for use with nanoflann. More...

#include <NanoflannMeshAdaptor.h>

Public Types
typedef Real	coord_t
	libMesh Point coordinate type More...

Public Member Functions
	NanoflannMeshAdaptor (const MeshBase &mesh)
size_t	kdtree_get_point_count () const
	Must return the number of data points. More...
coord_t	kdtree_distance (const coord_t *p1, const size_t idx_p2, size_t size) const
	Returns the distance between the vector "p1[0:size-1]" and the data point with index "idx_p2" stored in _mesh. More...
coord_t	kdtree_get_pt (const size_t idx, int dim) const
	Returns the dim'th component of the idx'th point in the class. More...
template<class BBOX >
bool	kdtree_get_bbox (BBOX &) const
	Optional bounding-box computation: return false to default to a standard bbox computation loop. More...

Private Attributes
const MeshBase &	_mesh

Detailed Description

template<unsigned int Dim>
class NanoflannMeshAdaptor< Dim >

This allows us to adapt the MeshBase class for use with nanoflann.

Taken from detect_slit.cc

Definition at line 41 of file NanoflannMeshAdaptor.h.

Member Typedef Documentation

coord_t

template<unsigned int Dim>

typedef Real NanoflannMeshAdaptor< Dim >::coord_t

libMesh Point coordinate type

Definition at line 53 of file NanoflannMeshAdaptor.h.

Constructor & Destructor Documentation

NanoflannMeshAdaptor()

template<unsigned int Dim>

NanoflannMeshAdaptor< Dim >::NanoflannMeshAdaptor ( const MeshBase &  mesh )

inline

Definition at line 48 of file NanoflannMeshAdaptor.h.

: _mesh(mesh) {}

Member Function Documentation

kdtree_distance()

template<unsigned int Dim>

coord_t NanoflannMeshAdaptor< Dim >::kdtree_distance ( const coord_t *  p1, const size_t  idx_p2, size_t  size  ) const

inline

Returns the distance between the vector "p1[0:size-1]" and the data point with index "idx_p2" stored in _mesh.

Definition at line 64 of file NanoflannMeshAdaptor.h.

  {
    libmesh_assert_equal_to(size, Dim);

    // Construct a libmesh Point object from the input coord_t.  This
    // assumes LIBMESH_DIM==3.
    Point point1(p1[0], size > 1 ? p1[1] : 0., size > 2 ? p1[2] : 0.);

    // Get the referred-to point from the Mesh
    const Point & point2 = _mesh.point(idx_p2);

    // Compute Euclidean distance, squared
    return (point1 - point2).norm_sq();
  }

kdtree_get_bbox()

template<unsigned int Dim>

template<class BBOX >

bool NanoflannMeshAdaptor< Dim >::kdtree_get_bbox ( BBOX &  ) const

inline

Optional bounding-box computation: return false to default to a standard bbox computation loop.

Definition at line 96 of file NanoflannMeshAdaptor.h.

  {
    return false;
  }

kdtree_get_point_count()

template<unsigned int Dim>

size_t NanoflannMeshAdaptor< Dim >::kdtree_get_point_count ( ) const

inline

Must return the number of data points.

Definition at line 58 of file NanoflannMeshAdaptor.h.

{ return _mesh.n_nodes(); }

kdtree_get_pt()

template<unsigned int Dim>

coord_t NanoflannMeshAdaptor< Dim >::kdtree_get_pt ( const size_t  idx, int  dim  ) const

inline

Returns the dim'th component of the idx'th point in the class.

Definition at line 82 of file NanoflannMeshAdaptor.h.

  {
    libmesh_assert_less(dim, (int)Dim);
    libmesh_assert_less(idx, _mesh.n_nodes());
    libmesh_assert_less(dim, 3);

    return _mesh.point(idx)(dim);
  }

Member Data Documentation

_mesh

template<unsigned int Dim>

const MeshBase& NanoflannMeshAdaptor< Dim >::_mesh

private

Definition at line 45 of file NanoflannMeshAdaptor.h.

Referenced by NanoflannMeshAdaptor< Dim >::kdtree_distance(), NanoflannMeshAdaptor< Dim >::kdtree_get_point_count(), and NanoflannMeshAdaptor< Dim >::kdtree_get_pt().

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

• include/constraints/NanoflannMeshAdaptor.h