Revision 911b54edbd517a4f19fd83b75a940d1c58a78584 authored by Julian Heinze on 13 June 2023, 14:28:53 UTC, committed by Dmitri Naumov on 13 June 2023, 16:34:52 UTC
1 parent 2bfe60b
TriRule3.h
/**
* \file
* \copyright
* Copyright (c) 2012-2023, 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 "FaceRule.h"
#include "EdgeReturn.h"
namespace MeshLib
{
/**
* This class represents a 2d triangle element. The following sketch shows the node and edge numbering.
* @anchor TriNodeAndEdgeNumbering
* @code
*
* 2
* o
* / \
* / \
* 2/ \1
* / \
* / \
* 0-----------1
* 0
*
* @endcode
*/
class TriRule3 : public FaceRule
{
public:
/// Constant: The number of base nodes for this element
static const unsigned n_base_nodes = 3u;
/// Constant: The number of all nodes for this element
static const unsigned n_all_nodes = 3u;
/// Constant: The geometric type of the element
static const MeshElemType mesh_elem_type = MeshElemType::TRIANGLE;
/// Constant: The FEM type of the element
static const CellType cell_type = CellType::TRI3;
/// Constant: The number of edges
static const unsigned n_edges = 3;
/// Constant: The number of neighbors
static const unsigned n_neighbors = 3;
/// Constant: Local node index table for edge
static const unsigned edge_nodes[3][2];
/// Returns the i-th edge of the element.
using EdgeReturn = MeshLib::LinearEdgeReturn;
/**
* \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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