PbIndexedMesh2D Class Reference
[Property/Data]

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 }
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 ()
PbIndexedMesh2D &	operator= (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 PbCell *	getCell (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

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

enum PbIndexedMesh2D::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).

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
	)