UDocumentation UE5.7 10.02.2026 (Source)
API documentation for Unreal Engine 5.7
voro::voronoicell Class Reference

Extension of the voronoicell_base class to represent a Voronoi cell without neighbor information. More...

#include <cell.hh>

+ Inheritance diagram for voro::voronoicell:

Public Member Functions

void operator= (voronoicell &c)
 
bool nplane (double x, double y, double z, double rsq, int p_id)
 
bool nplane (double x, double y, double z, int p_id)
 
bool plane (double x, double y, double z, double rsq)
 
bool plane (double x, double y, double z)
 
void init (double xmin, double xmax, double ymin, double ymax, double zmin, double zmax)
 
void init_octahedron (double l)
 
void init_tetrahedron (double x0, double y0, double z0, double x1, double y1, double z1, double x2, double y2, double z2, double x3, double y3, double z3)
 
void extractCellInfo (const FVector &CellPosition, TArray< FVector > &Vertices, TArray< int32 > &FaceVertexIndices)
 
template<class vc_class >
bool nplane (vc_class &vc, double x, double y, double z, double rsq, int p_id)
 
- Public Member Functions inherited from voro::voronoicell_base
 voronoicell_base ()
 
virtual ~voronoicell_base ()
 
void init_base (double xmin, double xmax, double ymin, double ymax, double zmin, double zmax)
 
void init_octahedron_base (double l)
 
void init_tetrahedron_base (double x0, double y0, double z0, double x1, double y1, double z1, double x2, double y2, double z2, double x3, double y3, double z3)
 
void translate (double x, double y, double z)
 
double volume ()
 
double max_radius_squared ()
 
double total_edge_distance ()
 
double surface_area ()
 
void centroid (double &cx, double &cy, double &cz)
 
int number_of_faces ()
 
int number_of_edges ()
 
void vertex_orders (std::vector< int > &v)
 
void vertices (std::vector< double > &v)
 
void vertices (double x, double y, double z, std::vector< double > &v)
 
void face_areas (std::vector< double > &v)
 
void face_orders (std::vector< int > &v)
 
void face_freq_table (std::vector< int > &v)
 
void face_vertices (std::vector< int > &v)
 
void face_perimeters (std::vector< double > &v)
 
void normals (std::vector< double > &v)
 
template<class vc_class >
bool nplane (vc_class &vc, double x, double y, double z, double rsq, int p_id)
 
bool plane_intersects (double x, double y, double z, double rsq)
 
bool plane_intersects_guess (double x, double y, double z, double rsq)
 
void construct_relations ()
 
void check_relations ()
 
void check_duplicates ()
 
void print_edges ()
 
virtual void neighbors (std::vector< int > &v)
 
virtual void print_edges_neighbors (int i)
 
int cycle_up (int a, int vertexIndex)
 
int cycle_down (int a, int vertexIndex)
 

Friends

class voronoicell_base
 

Additional Inherited Members

- Public Attributes inherited from voro::voronoicell_base
int current_vertices
 
int current_vertex_order
 
int current_delete_size
 
int current_delete2_size
 
int p
 
int up
 
int ** ed
 
int * nu
 
doublepts
 
- Protected Member Functions inherited from voro::voronoicell_base
void reset_edges ()
 
template<class vc_class >
void check_memory_for_copy (vc_class &vc, voronoicell_base *vb)
 
void copy (voronoicell_base *vb)
 
- Protected Attributes inherited from voro::voronoicell_base
int * mem
 
int * mec
 
int ** mep
 

Detailed Description

Extension of the voronoicell_base class to represent a Voronoi cell without neighbor information.

This class is an extension of the voronoicell_base class, in cases when is not necessary to track the IDs of neighboring particles associated with each face of the Voronoi cell.

Member Function Documentation

◆ extractCellInfo()

void voro::voronoicell::extractCellInfo ( const FVector CellPosition,
TArray< FVector > &  Vertices,
TArray< int32 > &  FaceVertexIndices 
)

Computes Unreal TArrays of all cell info.

◆ init()

void voro::voronoicell::init ( double  xmin,
double  xmax,
double  ymin,
double  ymax,
double  zmin,
double  zmax 
)
inline

Initializes the Voronoi cell to be rectangular box with the given dimensions.

Parameters
[in](xmin,xmax)the minimum and maximum x coordinates.
[in](ymin,ymax)the minimum and maximum y coordinates.
[in](zmin,zmax)the minimum and maximum z coordinates.

◆ init_octahedron()

void voro::voronoicell::init_octahedron ( double  l)
inline

Initializes the cell to be an octahedron with vertices at (l,0,0), (-l,0,0), (0,l,0), (0,-l,0), (0,0,l), and (0,0,-l).

Parameters
[in]la parameter setting the size of the octahedron.

◆ init_tetrahedron()

void voro::voronoicell::init_tetrahedron ( double  x0,
double  y0,
double  z0,
double  x1,
double  y1,
double  z1,
double  x2,
double  y2,
double  z2,
double  x3,
double  y3,
double  z3 
)
inline

Initializes the cell to be a tetrahedron.

Parameters
[in](x0,y0,z0)the coordinates of the first vertex.
[in](x1,y1,z1)the coordinates of the second vertex.
[in](x2,y2,z2)the coordinates of the third vertex.
[in](x3,y3,z3)the coordinates of the fourth vertex.

◆ nplane() [1/3]

bool voro::voronoicell::nplane ( double  x,
double  y,
double  z,
double  rsq,
int  p_id 
)
inline

Cuts a Voronoi cell using by the plane corresponding to the perpendicular bisector of a particle.

Parameters
[in](x,y,z)the position of the particle.
[in]rsqthe modulus squared of the vector.
[in]p_idthe plane ID, ignored for this case where no neighbor tracking is enabled.
Returns
False if the plane cut deleted the cell entirely, true otherwise.

◆ nplane() [2/3]

bool voro::voronoicell::nplane ( double  x,
double  y,
double  z,
int  p_id 
)
inline

Cuts a Voronoi cell using by the plane corresponding to the perpendicular bisector of a particle.

Parameters
[in](x,y,z)the position of the particle.
[in]p_idthe plane ID, ignored for this case where no neighbor tracking is enabled.
Returns
False if the plane cut deleted the cell entirely, true otherwise.

◆ nplane() [3/3]

template<class vc_class >
template bool voro::voronoicell_base::nplane ( vc_class vc,
double  x,
double  y,
double  z,
double  rsq,
int  p_id 
)

Cuts the Voronoi cell by a particle whose center is at a separation of (x,y,z) from the cell center. The value of rsq should be initially set to $x^2+y^2+z^2$.

Parameters
[in]vca reference to the specialized version of the calling class.
[in](x,y,z)the normal vector to the plane.
[in]rsqthe distance along this vector of the plane.
[in]p_idthe plane ID (for neighbor tracking only).
Returns
False if the plane cut deleted the cell entirely, true otherwise.

◆ operator=()

void voro::voronoicell::operator= ( voronoicell c)
inline

Copies the information from another voronoicell class into this class, extending memory allocation if necessary.

Parameters
[in]cthe class to copy.

◆ plane() [1/2]

bool voro::voronoicell::plane ( double  x,
double  y,
double  z 
)
inline

Cuts a Voronoi cell using by the plane corresponding to the perpendicular bisector of a particle.

Parameters
[in](x,y,z)the position of the particle.
Returns
False if the plane cut deleted the cell entirely, true otherwise.

◆ plane() [2/2]

bool voro::voronoicell::plane ( double  x,
double  y,
double  z,
double  rsq 
)
inline

Cuts a Voronoi cell using by the plane corresponding to the perpendicular bisector of a particle.

Parameters
[in](x,y,z)the position of the particle.
[in]rsqthe modulus squared of the vector.
Returns
False if the plane cut deleted the cell entirely, true otherwise.

Friends And Related Symbol Documentation

◆ voronoicell_base

friend class voronoicell_base
friend

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