Utility class for polyhedron cells.
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#include <MeshVizXLM/extractors/MxPolyhedronCellExtract.h>
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static void | getWeight (const MiGeometryI &meshGeometry, const MiVolumeCell *polyhedronCell, const MbVec3d &point, std::vector< double > &weights) |
| Gets the barycentric weights in the given polyhedron cell of the given point.
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static double | getLongestDistance (const MiGeometryI &meshGeometry, const MiVolumeCell *polyhedronCell) |
| Gets the longest distance inside the given polyhedron cell.
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static double | getShortestDistance (const MiGeometryI &meshGeometry, const MiVolumeCell *polyhedronCell) |
| Gets the shortest distance inside the given polyhedron cell.
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static bool | isPointInsideCell (const MiGeometryI &meshGeometry, const MiVolumeCell *polyhedronCell, const MbVec3d &point, std::vector< double > &weights) |
| Checks if a point is inside the given polyhedron cell.
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static MbVec3d | getFacetNormal (size_t facet, const MiGeometryI &meshGeometry, const MiVolumeCell *polyhedronCell) |
| Computes the average normal to a planar or almost-planar polygon facet of a the given polyhedron cell.
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Utility class for polyhedron cells.
Utility class that provides a static implementation of the MiVolumeCell's methods for a polyhedron cell. This class is provided to make easier the creation of a class that implements the MiVolumeCell interface for a polyhedron cell.
This implementation of getWeight() method assumes that a polyhedron is defined as a set of oriented polygons such that their normal is pointing to the inside ( each facet vertices are ordered in an counter-clockwise direction looking from the inside).
Definition at line 53 of file MxPolyhedronCellExtract.h.
◆ getFacetNormal()
Computes the average normal to a planar or almost-planar polygon facet of a the given polyhedron cell.
This is done by using Newell's method.
- Parameters
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[in] | facet | The number of the facet in the polyhedron cell. |
[in] | meshGeometry | The geometry of the mesh. |
[in] | polyhedronCell | The input cell. |
◆ getLongestDistance()
static double MxPolyhedronCellExtract::getLongestDistance |
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const MiGeometryI & |
meshGeometry, |
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const MiVolumeCell * |
polyhedronCell |
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Gets the longest distance inside the given polyhedron cell.
- Parameters
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[in] | meshGeometry | The geometry of the mesh. |
[in] | polyhedronCell | The input cell. |
◆ getShortestDistance()
static double MxPolyhedronCellExtract::getShortestDistance |
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const MiGeometryI & |
meshGeometry, |
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const MiVolumeCell * |
polyhedronCell |
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Gets the shortest distance inside the given polyhedron cell.
- Parameters
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[in] | meshGeometry | The geometry of the mesh. |
[in] | polyhedronCell | The input cell. |
◆ getWeight()
static void MxPolyhedronCellExtract::getWeight |
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const MiGeometryI & |
meshGeometry, |
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const MiVolumeCell * |
polyhedronCell, |
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const MbVec3d & |
point, |
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std::vector< double > & |
weights |
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Gets the barycentric weights in the given polyhedron cell of the given point.
- Note
- Each node coordinate of the given cell is retrieved in the following way:
meshGeometry.getCoord(polyhedronCell->getNodeIndex(i))
for each i with 0 <= i < polyhedronCell->getNumNodes()
- Parameters
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[in] | meshGeometry | The geometry of the mesh. |
[in] | polyhedronCell | The input cell. |
[in] | point | The input point given in the same space coordinate as meshGeometry. |
[out] | weights | This method computes the N values weights[0,N-1], where N=polyhedronCell->getNumNodes(). It assumes the weights vector array has been already allocated. Its size must be set to N (at least) before calling this method, using for instance the weights.resize(N) |
◆ isPointInsideCell()
static bool MxPolyhedronCellExtract::isPointInsideCell |
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const MiGeometryI & |
meshGeometry, |
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const MiVolumeCell * |
polyhedronCell, |
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const MbVec3d & |
point, |
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std::vector< double > & |
weights |
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Checks if a point is inside the given polyhedron cell.
All weights must be positive. This static method helps to implement the method MiCell::isPointInsideCell(meshGeometry,point,weights) for a polyhedron cell.
- Note
- Each node coordinate of the given cell is retrieved in the following way:
meshGeometry.getCoord(polyhedronCell->getNodeIndex(i))
for each i with 0 <= i < polyhedronCell->getNumNodes()
- Parameters
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[in] | meshGeometry | The geometry of the mesh. |
[in] | polyhedronCell | The input cell. |
[in] | point | The input point given in the same space coordinate as meshGeometry. |
[out] | weights | This method computes the N values weights[0,N-1], where N=polyhedronCell->getNumNodes(). It assumes the weights vector array has been already allocated. Its size must be set to N (at least) before calling this method, using for instance the weights.resize(N) |
The documentation for this class was generated from the following file: