MxTriangleCellExtract Class Reference
[Cell]

MeshViz Utility class for triangle cells. More...

#include <MeshVizXLM/extractors/MxTriangleCellExtract.h>

List of all members.

Static Public Member Functions

static MbVec3d getIsoParametricCoord (const MiGeometryI &meshGeometry, const MiSurfaceCell *triangleCell, const MbVec3d &point)
static MbVec3d getIsoParametricCoord (size_t nodeIndex)
static void getWeight (const MiGeometryI &meshGeometry, const MiSurfaceCell *triangleCell, const MbVec3d &point, std::vector< double > &weights)
static void getWeight (const MbVec3d &ipcoord, std::vector< double > &weights)
static bool isPointInsideCell (const MiGeometryI &meshGeometry, const MiSurfaceCell *triangleCell, const MbVec3d &point, std::vector< double > &weights)
static double getLongestEdgeLength (const MiGeometryI &meshGeometry, const MiSurfaceCell *cell)
static double getShortestEdgeLength (const MiGeometryI &meshGeometry, const MiSurfaceCell *cell)

Detailed Description

MeshViz Utility class for triangle cells.

Utility class that provides a static implementation of the MiSurfaceCell's methods in a triangle cell. This class is provided to make easier the creation of a class in the application that implements the MiSurfaceCell interface for a triangle cell.

The following image shows the nodes numbering used by this class. The weights (see getWeight()), and parametric coordinates (see getIsoParametricCoord()) are defined according to this node numbering.

LinearTriangle3.png

Nodes numbering


Member Function Documentation

static MbVec3d MxTriangleCellExtract::getIsoParametricCoord ( size_t  nodeIndex  )  [static]

Returns the iso parametric coordinates of one of the 3 nodes of a triangle cell.

This static method helps to implement the method MiCell::getIsoParametricCoord().

Parameters:
[in] nodeIndex Must be defined in the range [0-2]
static MbVec3d MxTriangleCellExtract::getIsoParametricCoord ( const MiGeometryI meshGeometry,
const MiSurfaceCell triangleCell,
const MbVec3d point 
) [static]

Computes the iso parametric coordinates of the given point in the given cell with the given geometry.

As computing the iso parametric coordinates of a point needs the coordinates of the cell's nodes, the given triangleCell is assumed to contain 3 nodes.

Note:
Each node coordinate of the given cell is retrieved in the following way:
     meshGeometry.getCoord(triangleCell->getNodeIndex(i)) 
    
for each i in the range [0-2].
Parameters:
[in] meshGeometry The geometry of the mesh.
[in] triangleCell The input cell.
[in] point The input point given in the same space coordinate as meshGeometry.
static double MxTriangleCellExtract::getLongestEdgeLength ( const MiGeometryI meshGeometry,
const MiSurfaceCell cell 
) [static]

Gets the longest edge of a triangle cell.

static double MxTriangleCellExtract::getShortestEdgeLength ( const MiGeometryI meshGeometry,
const MiSurfaceCell cell 
) [static]

Gets the shortest edge of a triangle cell.

static void MxTriangleCellExtract::getWeight ( const MbVec3d ipcoord,
std::vector< double > &  weights 
) [inline, static]

Gets the weights of a point defined by its iso parametric coordinates.

This static method helps to implement the method MiCell::getWeight(ipcoord,weights) for a triangle cell.

Parameters:
[in] ipcoord The iso parametric coordinates of the input point. The reference space for the iso parametric coordinates is assumed to be [0-1]. Thus any point inside the cell has iso parametric coordinates in the interval [0-1].
[out] weights This method computes the 3 values weights[0-2]. It assumes the weights vector array has been already allocated. Its size must be set to 3 (at least) before calling this method, using for instance the weights::resize(3)
static void MxTriangleCellExtract::getWeight ( const MiGeometryI meshGeometry,
const MiSurfaceCell triangleCell,
const MbVec3d point,
std::vector< double > &  weights 
) [inline, static]

Gets the weights in the given cell of the given point.

This static method helps to implement the method MiCell::getWeight(meshGeometry,point,weights) for a triangle cell. As computing the weights of a point needs the coordinates of the cell's nodes, the given triangleCell is assumed to contain 3 nodes.

Note:
Each node coordinate of the given cell is retrieved in the following way:
     meshGeometry.getCoord(triangleCell->getNodeIndex(i)) 
    
for each i in the range [0-2].
Parameters:
[in] meshGeometry The geometry of the mesh.
[in] triangleCell The input cell.
[in] point The input point given in the same space coordinate as meshGeometry.
[out] weights This method computes the 3 values weights[0-2]. It assumes the weights vector array has been already allocated. Its size must be set to 3 (at least) before calling this method, using for instance the weights.resize(3)
static bool MxTriangleCellExtract::isPointInsideCell ( const MiGeometryI meshGeometry,
const MiSurfaceCell triangleCell,
const MbVec3d point,
std::vector< double > &  weights 
) [inline, static]

Checks if a point is inside or outside a triangle cell.

This static method helps to implement the method MiCell::isPointInsideCell(meshGeometry,point,weights) for a triangle cell.

Parameters:
[in] meshGeometry The geometry of the mesh.
[in] triangleCell The input cell.
[in] point The input point given in the same space coordinate as meshGeometry.
[out] weights This method computes the 3 values weights[0-2] if the point is inside the cell. It assumes the weights vector array has been already allocated. Its size must be set to 3 (at least) before calling this method, using for instance the weights::resize(3)
Returns:
true if the point is inside the cell.

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

Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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