Revision ecdb52cd49f99a5a6cdd9c7ff4277340c3406f6d authored by Wenqing Wang on 01 October 2021, 14:19:08 UTC, committed by Dmitry Yu. Naumov on 11 November 2021, 10:53:01 UTC
1 parent 46a4437
HexRule8.h
/**
* \file
* \copyright
* Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
* Distributed under a Modified BSD License.
* See accompanying file LICENSE.txt or
* http://www.opengeosys.org/project/license
*
*/
#pragma once
#include "MeshLib/MeshEnums.h"
#include "Element.h"
#include "EdgeReturn.h"
#include "CellRule.h"
namespace MeshLib
{
/**
* A 8-nodes Hexahedron Element.
* @code
*
* Hex:
* 6
* 7-----------6
* /: /|
* / : / |
* 7/ : /5 |
* / 11: / | 10
* / : 4 / |
* 4-----------5 |
* | : | 2 |
* | 3.....|.....2
* | . | /
* 8 | . |9 /
* | 3. | / 1
* | . | /
* |. |/
* 0-----------1
* 0
*
* @endcode
*/
class HexRule8 : public CellRule
{
public:
/// Constant: The number of base nodes for this element
static const unsigned n_base_nodes = 8u;
/// Constant: The number of all nodes for this element
static const unsigned n_all_nodes = 8u;
/// Constant: The geometric type of the element
static const MeshElemType mesh_elem_type = MeshElemType::HEXAHEDRON;
/// Constant: The FEM type of the element
static const CellType cell_type = CellType::HEX8;
/// Constant: The number of faces
static const unsigned n_faces = 6;
/// Constant: The number of edges
static const unsigned n_edges = 12;
/// Constant: The number of neighbors
static const unsigned n_neighbors = 6;
/// Constant: Local node index table for faces
static const unsigned face_nodes[6][4];
/// Constant: Local node index table for edge
static const unsigned edge_nodes[12][2];
/// Returns the i-th edge of the element.
using EdgeReturn = MeshLib::LinearEdgeReturn;
/// Returns the i-th face of the element.
static const Element* getFace(const Element* e, unsigned i);
/**
* \copydoc MeshLib::Element::isPntInElement()
* @param nodes the nodes of the element.
*/
static bool isPntInElement(Node const* const* nodes,
MathLib::Point3d const& pnt, double eps);
/**
* Tests if the element is geometrically valid.
*/
static ElementErrorCode validate(const Element* e);
/// Returns the ID of a face given an array of nodes.
static unsigned identifyFace(Node const* const* /*_nodes*/,
Node const* nodes[3]);
/// Calculates the volume of a convex hexahedron by partitioning it into six tetrahedra.
static double computeVolume(Node const* const* _nodes);
}; /* class */
} // namespace MeshLib
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