integrationrule.h

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/*
 *
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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 integrationrule_h
#define integrationrule_h
 
#include "oofemenv.h"
#include "materialmode.h"
#include "integrationdomain.h"
#include "contextioresulttype.h"
#include "contextmode.h"
#include "inputrecord.h"
 
#include <cstdio>
 
namespace oofem {
class TimeStep;
class GaussPoint;
class Element;
class DataStream;

enum IntegrationRuleType {
    IRT_None = 0,
    IRT_Gauss = 1,
    IRT_Lobatto = 2
};

class OOFEM_EXPORT IntegrationRule
{
protected:
    int number;
    Element *elem;
    integrationDomain intdomain;

    std::vector< GaussPoint * > gaussPoints;
    int firstLocalStrainIndx, lastLocalStrainIndx;

    bool isDynamic;
 
public:
    std::vector< GaussPoint *> :: iterator begin() { return gaussPoints.begin(); }
    std::vector< GaussPoint *> :: iterator end() { return gaussPoints.end(); }

    IntegrationRule(int n, Element * e, int startIndx, int endIndx, bool dynamic);
    IntegrationRule(int n, Element * e);
    virtual ~IntegrationRule();

    int giveNumberOfIntegrationPoints() const { return (int)gaussPoints.size(); }
    GaussPoint *getIntegrationPoint(int n);
    GaussPoint *findIntegrationPointClosestTo(const FloatArray &lcoord);
    int getStartIndexOfLocalStrainWhereApply() { return firstLocalStrainIndx; }
    int getEndIndexOfLocalStrainWhereApply() { return lastLocalStrainIndx; }
    int setUpIntegrationPoints(integrationDomain intdomain, int nPoints, MaterialMode matMode);
    int setUpIntegrationPoints(integrationDomain intdomain, int nPointsXY, int nPointsZ, MaterialMode matMode);
    int setUpEmbeddedIntegrationPoints(integrationDomain intdomain, int nPoints, MaterialMode matMode,
                                       const std :: vector< FloatArray > &coords);

    virtual void printOutputAt(FILE *file, TimeStep *tStep);
    void updateYourself(TimeStep *tStep);

    Element *giveElement() { return elem; }
    void setElement(Element *e) { elem = e; }
    int giveNumber() { return this->number; }
    integrationDomain giveIntegrationDomain() const { return this->intdomain; }
    virtual int getRequiredNumberOfIntegrationPoints(integrationDomain dType, int approxOrder) { return 0; }

    virtual void saveContext(DataStream &stream, ContextMode mode);
    virtual void restoreContext(DataStream &stream, ContextMode mode);
    void clear();

    virtual const IntArray *giveKnotSpan() { return NULL; }
 
    virtual const char *giveClassName() const { return "IntegrationRule"; }
    std :: string errorInfo(const char *func) const { return std :: string(giveClassName()) + func; }
    virtual IntegrationRuleType giveIntegrationRuleType() const { return IRT_None; }
    virtual void initializeFrom(InputRecord &ir) { }

    int SetUpPoint(MaterialMode mode);
    virtual int SetUpPointsOnLine(int, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOnTriangle(int, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOnSquare(int, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOn3dDegShell(int nPointsXY, int nPointsZ, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOn3dDegShellLayers(int nPointsXY, int nPointsZ, MaterialMode mode, const FloatArray &layerThickness) { return 0; }
    virtual int SetUpPointsOnCube(int, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOnCubeLayers(int nPoints1, int nPoints2, int nPointsDepth, MaterialMode mode, const FloatArray &layerThickness) { return 0; }
    virtual int SetUpPointsOnTetrahedra(int, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOn2DEmbeddedLine(int nPoints, MaterialMode mode,
                                            const FloatArray &coord0, const FloatArray &coord1) { return 0; }

    virtual int SetUpPointsOnWedge(int nPointsTri, int nPointsDepth, MaterialMode mode) { return 0; }
    virtual int SetUpPointsOnWedgeLayers(int nPointsTri, int nPointsDepth, MaterialMode mode, const FloatArray &layerThickness) { return 0; }
};
} // end namespace oofem
#endif // integrationrule_h