Open Inventor Release 2023.2.3
 
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PbIndexedMesh2D Class Reference

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

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

+ Inheritance diagram for PbIndexedMesh2D:

Public Types

enum  ElemOrientation {
  ORIENTATION_AS_IS ,
  ORIENTATION_ZPOS ,
  ORIENTATION_ZNEG
}
 Cell orientation for visualization of 2D surface mesh. More...
 
- Public Types inherited from PbMesh2D
enum  ExtrapolationMethod {
  USE_ADJACENT_DERIVS ,
  USE_ADJACENT_VALUES
}
 Specifies the type of extrapolation used by getFaultMesh() when computing values on the fault lines. More...
 
- Public Types inherited from PbMesh
enum  DataBinding {
  PER_CELL = PoMeshProperty::PER_CELL ,
  PER_NODE = PoMeshProperty::PER_NODE
}
 Data binding. More...
 

Public Member Functions

 PbIndexedMesh2D (SbBool is_data_duplicate=TRUE)
 Constructor of a default simple mesh.
 
 PbIndexedMesh2D (const PbIndexedMesh2D &mesh)
 Copy constructor.
 
 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.
 
 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.
 
 ~PbIndexedMesh2D ()
 Destructor.
 
PbIndexedMesh2Doperator= (const PbIndexedMesh2D &mesh)
 Assignment operator.
 
void 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.
 
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)
 Sets a new 3D geometry.
 
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
 Gets the current mesh geometry (x, y and z nodes coordinates).
 
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
 Gets the current mesh geometry (x, y nodes coordinates).
 
void 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)
 
void getNodes (int &num_nodes, const float *&x_nod, const float *&y_nod) const
 Gets the mesh nodes coordinates (only x,y coordinates)
 
virtual SbVec3f getNodeCoord (int nod_index) const
 Gets the coordinates of a node.
 
virtual void getNodeOwnerCellsInd (int nod_index, PbArrayOfInt &owner_cells) const
 Gets the list of index of cells that own the node "nod_index".
 
virtual const PbCellgetCell (int cell_index) const
 Gets the cell which index is cell_index.
 
virtual void setElemOrientation (ElemOrientation cell_orient)
 Changes orientation of cells during visualization of 2D surface mesh.
 
- Public Member Functions inherited from PbMesh2D
void addVecsSet (int set_index, const SbVec2f *val, const SbString &setName="")
 Adds a set of 2D vectors on the mesh.
 
virtual SbBox2f getBoundingBox () const
 Gets the 2D mesh's bounding box.
 
virtual float getVolume () const
 Always returns 0.
 
virtual float getArea () const
 Gets the area of the mesh.
 
PbMesh2DgetFaultMesh (int num_fault_lines, const int *fault_line_sizes, const SbVec3f *coord, ExtrapolationMethod extrapol_method, PbDefinedValue &definedValue) const
 Builds a new mesh by inserting some fault lines in this mesh.
 
PbMesh2DgetFaultMesh (int num_fault_lines, const int *fault_line_sizes, const SbVec3f *coord) const
 Same as calling getFaultMesh(num_fault_lines, fault_line_sizes, coord,PbMesh2D::USE_ADJACENT_DERIVS, PbDefinedValue())
 
- Public Member Functions inherited from PbMesh
 PbMesh (SbBool is_data_duplicated=TRUE)
 Constructor.
 
 PbMesh (const PbMesh &mesh)
 Copy constructor.
 
 ~PbMesh ()
 Destructor.
 
PbMeshoperator= (const PbMesh &mesh)
 Assignment operator.
 
int getNumNodes () const
 Gets the number of nodes in the mesh.
 
int getNumCells () const
 Gets the number of cells in the mesh.
 
SbBox3f getBoundingBox () const
 Gets the bounding box of the mesh.
 
SbBool isDataDuplicated () const
 Returns TRUE if mesh's data are duplicated, FALSE otherwise.
 
virtual void addValuesSet (int set_index, const float *val, const SbString &set_name="")
 Adds a set of scalar values.
 
void addValuesSet (int set_index, const float *val, DataBinding binding, const SbString &set_name="")
 Adds a set of scalar values that can be located either at nodes or at cells.
 
DataBinding getValuesBinding (int set_index) const
 Gets the binding of the scalar value set.
 
virtual void addStringsSet (int set_index, const SbString *val, const SbString &set_name="")
 Adds a set of string values .
 
virtual const SbStringgetValuesSetName (int set_index) const
 Gets the name associated to a scalar values set.
 
virtual const SbStringgetStringsSetName (int set_index) const
 Gets the name associated to a string values set.
 
virtual const SbStringgetVecsSetName (int set_index) const
 Gets the name associated to a vec values set.
 
virtual const float * getValuesSet (int set_index) const
 Gets a set of scalar values.
 
virtual const SbStringgetStringsSet (int set_index) const
 Gets a set of string values.
 
virtual const SbVec3fgetVecsSet (int set_index) const
 Gets a set of vector values.
 
virtual SbBool removeValuesSet (int set_index)
 Remove a set of scalar values.
 
virtual SbBool removeStringsSet (int set_index)
 Remove a set of string values.
 
virtual SbBool removeVecsSet (int set_index)
 Remove a set of vector values.
 
virtual void removeAllValuesSet ()
 Remove all sets of scalar values.
 
virtual void removeAllStringsSet ()
 Remove all sets of strings values.
 
virtual void removeAllVecsSet ()
 Remove all sets of vector values.
 
virtual int getNumValuesSet () const
 Gets the number of set of scalar values.
 
virtual int getNumStringsSet () const
 Gets the number of set of string values.
 
virtual int getNumVecsSet () const
 Gets the number of set of vector values.
 
virtual SbBool getMinValuesSet (int set_index, float &min) const
 Gets the min of a set of scalars.
 
virtual SbBool getMinVecsSet (int set_index, float &min) const
 Gets the min module of a set of vectors.
 
virtual SbBool getMaxValuesSet (int set_index, float &max) const
 Gets the max of a set of scalars.
 
virtual SbBool getMaxVecsSet (int set_index, float &max) const
 Gets the max module of a set of vectors.
 
virtual void getNodesOwnerCellsInd (const PbArrayOfInt &nod_indices, PbArrayOfInt &owner_cells) const
 Gets the list of indices of cells that own the list of nodes "nod_indices".
 
virtual void getAdjacentCellsIndByNode (int cell_index, PbArrayOfInt &adjacent_cells) const
 Gets the list of indices of cells that are adjacent (by a node) to cell_index.
 
virtual void getAdjacentCellsIndByFacet (int cell_index, PbArrayOfInt &adjacent_cells) const
 Gets the list of indices of cells that are adjacent (by a facet) to cell_index.
 
virtual SbBox3f getSmallestCellBox (int &cell_index) const
 Gets the smallest cell's bounding box, returns also the index of this cell.
 
virtual SbBox3f getBiggestCellBox (int &cell_index) const
 Gets the biggest cell's bounding box, returns also the index of this cell.
 
virtual const PbCellfindContainingCell (const SbVec3f &point, float tolerance, SbVec3f &pcoord, const PbCell *adjacent_cell) const
 
virtual const PbCellfindContainingCell (const SbVec3f &point, float tolerance, SbVec3f &pcoord) const
 Find the cell that contains the point.
 
virtual void setCoordinates (const float *x_nod, const float *y_nod, const float *z_nod)
 Set new node coordinates without modifying the mesh topology.
 
virtual void getCoordinates (const float *&xnod, const float *&ynod, const float *&znod, int &size_xnod, int &size_ynod, int &size_znod) const
 Get the current coordinates of the nodes of this mesh.
 
- Public Member Functions inherited from PbBase
void enableConnection (SbBool flag)
 Activates/deactivates the mechanism of connection.
 
SbBool isConnectionEnabled () const
 Returns TRUE if the connection mechanism is active, otherwise FALSE.
 
void touch ()
 Simulates the changing of an instance of this object, so all connected objects are informed of this change.
 
PbBaseoperator= (const PbBase &base)
 Assignment operator.
 

Friends

int operator== (const PbIndexedMesh2D &m1, const PbIndexedMesh2D &m2)
 Equality comparison operator.
 
int operator!= (const PbIndexedMesh2D &m1, const PbIndexedMesh2D &m2)
 Inequality comparison operator.
 

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.

Definition at line 64 of file PbIndexedMesh2D.h.

Member Enumeration Documentation

◆ ElemOrientation

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)

Definition at line 180 of file PbIndexedMesh2D.h.

Constructor & Destructor Documentation

◆ PbIndexedMesh2D() [1/4]

PbIndexedMesh2D::PbIndexedMesh2D ( SbBool  is_data_duplicate = TRUE)

Constructor of a default simple mesh.

See also PbMesh for more explanations about data duplication.

◆ PbIndexedMesh2D() [2/4]

PbIndexedMesh2D::PbIndexedMesh2D ( const PbIndexedMesh2D mesh)

Copy constructor.

◆ PbIndexedMesh2D() [3/4]

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() [4/4]

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::~PbIndexedMesh2D ( )

Destructor.

Member Function Documentation

◆ getCell()

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.

◆ getGeometry() [1/2]

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).

◆ getGeometry() [2/2]

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).

◆ getNodeCoord()

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

Gets the coordinates of a node.

Implements PbMesh.

◆ getNodeOwnerCellsInd()

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.

◆ getNodes() [1/2]

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

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

◆ getNodes() [2/2]

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)

◆ operator=()

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

Assignment operator.

◆ setElemOrientation()

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.

◆ setGeometry() [1/2]

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.

◆ setGeometry() [2/2]

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 Symbol Documentation

◆ operator!=

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

Inequality comparison operator.

Definition at line 115 of file PbIndexedMesh2D.h.

◆ operator==

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

Equality comparison operator.


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