fei3dtetlin.h

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/*
 *
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef fei3dtetlin_h
#define fei3dtetlin_h
 
#include "feinterpol3d.h"
 
namespace oofem {
class OOFEM_EXPORT FEI3dTetLin : public FEInterpolation3d
{
public:
    FEI3dTetLin() : FEInterpolation3d(1) { }
 
    integrationDomain giveIntegrationDomain(const Element_Geometry_Type) const override { return _Tetrahedra; }
    const Element_Geometry_Type giveGeometryType() const override { return EGT_tetra_1; }
    const Element_Geometry_Type giveBoundaryGeometryType(int boundary) const override { return EGT_triangle_1; }
    integrationDomain giveBoundaryIntegrationDomain(int ib, const Element_Geometry_Type) const override { return _Triangle; }
    integrationDomain giveBoundarySurfaceIntegrationDomain(int isurf, const Element_Geometry_Type) const override { return _Triangle; }
    integrationDomain giveBoundaryEdgeIntegrationDomain(int iedge, const Element_Geometry_Type) const override { return _Line; }
 
    // Bulk
    static FloatArrayF<4> evalN(const FloatArrayF<3> &lcoords);
    static std::pair<double, FloatMatrixF<3,4>> evaldNdx(const FEICellGeometry &cellgeo);
 
    void evalN(FloatArray &answer, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    double evaldNdx(FloatMatrix &answer, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    void local2global(FloatArray &answer, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    int  global2local(FloatArray &answer, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    double giveTransformationJacobian(const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    int giveNumberOfNodes(const Element_Geometry_Type) const override { return 4; }
    void giveCellDofMans(IntArray& nodes, IntArray& internalDofMans, Element* elem) const override {nodes={1,2,3,4}; internalDofMans={};}
 
    // Edge
    void edgeEvalN(FloatArray &answer, int iedge, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    void edgeEvaldNdx(FloatMatrix &answer, int iedge, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    void edgeLocal2global(FloatArray &answer, int iedge, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    double edgeGiveTransformationJacobian(int iedge, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    IntArray computeLocalEdgeMapping(int iedge) const override;
 
    // Surface
    void surfaceEvalN(FloatArray &answer, int isurf, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    void surfaceEvaldNdx(FloatMatrix &answer, int isurf, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    double surfaceEvalNormal(FloatArray &answer, int isurf, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    void surfaceLocal2global(FloatArray &answer, int isurf, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    double surfaceGiveTransformationJacobian(int isurf, const FloatArray &lcoords, const FEICellGeometry &cellgeo) const override;
    IntArray computeLocalSurfaceMapping(int iedge) const override;
    double evalNXIntegral(int iEdge, const FEICellGeometry &cellgeo) const override;
 
    std::unique_ptr<IntegrationRule> giveIntegrationRule(int order, const Element_Geometry_Type) const override;
    std::unique_ptr<IntegrationRule> giveBoundaryIntegrationRule(int order, int boundary, const Element_Geometry_Type) const override;
 
    
protected:
    double edgeComputeLength(const IntArray &edgeNodes, const FEICellGeometry &cellgeo) const;
};
} // end namespace oofem
#endif // fei3dtetlin_h