PbIndexedMesh2D Class Reference
[Property/Data]

MeshViz Defines a surface mesh of polygons. More...

#include <MeshViz/3Ddata/PbIndexedMesh2D.h>

Inheritance diagram for PbIndexedMesh2D:
PbMesh2D PbMesh PbBase PbQuadrangleMesh2D PbTriangleMesh2D

List of all members.

Public Types

enum  ElemOrientation {
  ORIENTATION_AS_IS,
  ORIENTATION_ZPOS,
  ORIENTATION_ZNEG
}

Public Member Functions

 PbIndexedMesh2D (SbBool is_data_duplicate=TRUE)
 PbIndexedMesh2D (const PbIndexedMesh2D &mesh)
 PbIndexedMesh2D (int num_nodes, const float *x_nod, const float *y_nod, int num_cells, const int *cell_index, const int *cell_type, SbBool is_data_duplicate=TRUE)
 PbIndexedMesh2D (int num_nodes, const float *x_nod, const float *y_nod, const float *z_nod, int num_cells, const int *cell_index, const int *cell_type, SbBool is_data_duplicate=TRUE)
 ~PbIndexedMesh2D ()
PbIndexedMesh2Doperator= (const PbIndexedMesh2D &mesh)
void setGeometry (int num_nodes, const float *x_nod, const float *y_nod, int num_cells, const int *cell_index, const int *cell_type)
void setGeometry (int num_nodes, const float *x_nod, const float *y_nod, const float *z_nod, int num_cells, const int *cell_index, const int *cell_type)
void getGeometry (int &numNode, const float *&x_nod, const float *&y_nod, const float *&z_nod, int &num_cells, const int32_t *&cell_index, const int32_t *&cell_type) const
void getGeometry (int &numNode, const float *&x_nod, const float *&y_nod, int &num_cells, const int32_t *&cell_index, const int32_t *&cell_type) const
void getNodes (int &num_nodes, const float *&x_nod, const float *&y_nod, const float *&z_nod) const
void getNodes (int &num_nodes, const float *&x_nod, const float *&y_nod) const
virtual SbVec3f getNodeCoord (int nod_index) const
virtual void getNodeOwnerCellsInd (int nod_index, PbArrayOfInt &owner_cells) const
virtual const PbCellgetCell (int cell_index) const
virtual void setElemOrientation (ElemOrientation cell_orient)

Friends

int operator== (const PbIndexedMesh2D &m1, const PbIndexedMesh2D &m2)
int operator!= (const PbIndexedMesh2D &m1, const PbIndexedMesh2D &m2)

Detailed Description

MeshViz Defines a surface mesh of polygons.

Class to define an indexed 2D mesh. Each cell of this type of mesh is a polygon with any number of nodes. Each polygon cell is defined by a list of indices in an array of nodes.

The nodes coordinates are defined by 2 (or 3) arrays x_nod, y_nod (and z_nod) of num_nodes floats. The cells are defined by the array cell_type (size num_cells) and cell_index. cell_type[n] defines the number of nodes in the n-th cells: if cell_type[i] = 3, the i-th cell is a triangle, if cell_type[i] = 4, it is a quadrangle... cell_index is an array of S integers, where S = cell_type[0] + cell_type[1] + ... + cell_type[num_nodes - 1]. cell_index contains the num_cells lists of node indices which define each cell topology.

Each edge of a cell may have 2 references in the mesh, that is, one edge is common to 2 cells. The edges which are referred to once in the mesh define the limits of the mesh.

The values on the mesh nodes are defined by the PbMesh::addValuesSet(set_index,val) method, where val argument is an array of num_nodes floats.


Member Enumeration Documentation

Cell orientation for visualization of 2D surface mesh.

Enumerator:
ORIENTATION_AS_IS 

The cell orientation is kept.

ORIENTATION_ZPOS 

Cell is oriented with a normal = (0,0,1).

ORIENTATION_ZNEG 

Cell is oriented with a normal = (0,0,-1).


Constructor & Destructor Documentation

PbIndexedMesh2D::PbIndexedMesh2D ( SbBool  is_data_duplicate = TRUE  ) 

Constructor of a default simple mesh.

See also PbMesh for more explanations about data duplication.

PbIndexedMesh2D::PbIndexedMesh2D ( const PbIndexedMesh2D mesh  ) 

Copy constructor.

PbIndexedMesh2D::PbIndexedMesh2D ( int  num_nodes,
const float *  x_nod,
const float *  y_nod,
int  num_cells,
const int *  cell_index,
const int *  cell_type,
SbBool  is_data_duplicate = TRUE 
)

Constructor of a 2D surface mesh.

See also PbMesh for more explanations about data duplication.

PbIndexedMesh2D::PbIndexedMesh2D ( int  num_nodes,
const float *  x_nod,
const float *  y_nod,
const float *  z_nod,
int  num_cells,
const int *  cell_index,
const int *  cell_type,
SbBool  is_data_duplicate = TRUE 
)

Constructor of a 3D surface mesh.

See also PbMesh for more explanations about data duplication.

PbIndexedMesh2D::~PbIndexedMesh2D (  ) 

Destructor.


Member Function Documentation

virtual const PbCell* PbIndexedMesh2D::getCell ( int  cell_index  )  const [virtual]

Gets the cell which index is cell_index.

Returns NULL if the cell does not exist. Attention! this method returns always the same adress of an internal private cell. This private cell is updated each time getCell is called.

Implements PbMesh.

Reimplemented in PbQuadrangleMesh2D, and PbTriangleMesh2D.

void PbIndexedMesh2D::getGeometry ( int &  numNode,
const float *&  x_nod,
const float *&  y_nod,
int &  num_cells,
const int32_t *&  cell_index,
const int32_t *&  cell_type 
) const

Gets the current mesh geometry (x, y nodes coordinates).

void PbIndexedMesh2D::getGeometry ( int &  numNode,
const float *&  x_nod,
const float *&  y_nod,
const float *&  z_nod,
int &  num_cells,
const int32_t *&  cell_index,
const int32_t *&  cell_type 
) const

Gets the current mesh geometry (x, y and z nodes coordinates).

virtual SbVec3f PbIndexedMesh2D::getNodeCoord ( int  nod_index  )  const [virtual]

Gets the coordinates of a node.

Implements PbMesh.

virtual void PbIndexedMesh2D::getNodeOwnerCellsInd ( int  nod_index,
PbArrayOfInt owner_cells 
) const [virtual]

Gets the list of index of cells that own the node "nod_index".

Implements PbMesh.

void PbIndexedMesh2D::getNodes ( int &  num_nodes,
const float *&  x_nod,
const float *&  y_nod 
) const

Gets the mesh nodes coordinates (only x,y coordinates).

void PbIndexedMesh2D::getNodes ( int &  num_nodes,
const float *&  x_nod,
const float *&  y_nod,
const float *&  z_nod 
) const

Gets the mesh nodes coordinates (x,y,z coordinates).

PbIndexedMesh2D& PbIndexedMesh2D::operator= ( const PbIndexedMesh2D mesh  ) 

Assignment operator.

Reimplemented from PbMesh2D.

Reimplemented in PbQuadrangleMesh2D, and PbTriangleMesh2D.

virtual void PbIndexedMesh2D::setElemOrientation ( ElemOrientation  cell_orient  )  [virtual]

Changes orientation of cells during visualization of 2D surface mesh.

The ordering of the indices of an cell defines the direction of its normal vector and so its orientation. When the mesh is visualized in 2D, the direction of the normal of an cell is either Z+ or Z-. If any cell of the mesh does not have the same orientation, it can change the representation because the lighting depends on the orientation.

Reimplemented in PbQuadrangleMesh2D, and PbTriangleMesh2D.

void PbIndexedMesh2D::setGeometry ( int  num_nodes,
const float *  x_nod,
const float *  y_nod,
const float *  z_nod,
int  num_cells,
const int *  cell_index,
const int *  cell_type 
)

Sets a new 3D geometry.

void PbIndexedMesh2D::setGeometry ( int  num_nodes,
const float *  x_nod,
const float *  y_nod,
int  num_cells,
const int *  cell_index,
const int *  cell_type 
)

Sets a new 2D geometry.


Friends And Related Function Documentation

int operator!= ( const PbIndexedMesh2D m1,
const PbIndexedMesh2D m2 
) [friend]

Inequality comparison operator.

Reimplemented in PbQuadrangleMesh2D, and PbTriangleMesh2D.

int operator== ( const PbIndexedMesh2D m1,
const PbIndexedMesh2D m2 
) [friend]

Equality comparison operator.

Reimplemented in PbQuadrangleMesh2D, and PbTriangleMesh2D.


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

Open Inventor Toolkit reference manual, generated on 12 Feb 2024
Copyright © Thermo Fisher Scientific All rights reserved.
http://www.openinventor.com/