resforces.cc

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/mbdyn/base/resforces.cc,v 1.26 2017/01/12 14:46:10 masarati Exp $ */
/* 
 * MBDyn (C) is a multibody analysis code. 
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation (version 2 of the License).
 * 
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "mbconfig.h"           /* This goes first in every *.c,*.cc file */

#include "resforces.h"
#include "dataman.h"

/* ResForces - begin */

ResForces::ResForces(void) 
: F(Zero3), C(Zero3)
{ 
        NO_OP; 
}

ResForces::~ResForces(void) 
{
        NO_OP;
}

void
ResForces::Reset(void)
{ 
        F = Zero3; 
        C = Zero3;
}

void
ResForces::AddForce(const Vec3& f)
{
        F += f;
}

void
ResForces::AddForce(const Vec3& f, Vec3& x)
{ 
        F += f; 
        C += (x-Pole()).Cross(f); 
}

void
ResForces::AddMoment(const Vec3& c)
{
        C += c;
}

void
ResForces::AddForces(const Vec3& f, const Vec3& c, const Vec3& x)
{
        F += f;
        C += c + (x-Pole()).Cross(f);
}

void
ResForces::PutForce(const Vec3& f)
{
        F = f;
}

void
ResForces::PutMoment(const Vec3& c)
{
        C = c;
}

void
ResForces::PutForces(const Vec3& f, const Vec3& c)
{
        F = f;
        C = c;
}

const Vec3& 
ResForces::Force(void) const
{
        return F;
}

const Vec3&
ResForces::Moment(void) const
{
        return C;
}

ExternResForces::ExternResForces(void)
: X(Zero3)
{
        NO_OP;
}

ExternResForces::~ExternResForces(void)
{
        NO_OP;
}

void
ExternResForces::Reset(void)
{
        ResForces::Reset();
}

void
ExternResForces::Reset(const Vec3& x)
{
        X = x;
        ResForces::Reset();
}

void
ExternResForces::PutPole(const Vec3& x)
{
        X = x;
}

const Vec3& 
ExternResForces::Pole(void) const
{
        return X;
}

NodeResForces::NodeResForces(const StructNode *n)
: pNode(n)
{
        NO_OP;
}

NodeResForces::~NodeResForces(void)
{
        NO_OP;
} 

const Vec3&
NodeResForces::Pole(void) const
{
        ASSERT(pNode); 
        return pNode->GetXCurr(); 
}

LocalNodeResForces::LocalNodeResForces(const StructNode *n)
: NodeResForces(n)
{
        NO_OP;
}

LocalNodeResForces::~LocalNodeResForces(void)
{
        NO_OP;
}

const Vec3&
LocalNodeResForces::Force(void) const
{ 
        return (Fr = pNode->GetRCurr().Transpose()*F); 
}

const Vec3&
LocalNodeResForces::Moment(void) const
{ 
        return (Cr = pNode->GetRCurr().Transpose()*C);
}

ResForceSet::ResForceSet(unsigned int uLabel, ResForces *p) 
: WithLabel(uLabel), pRes(p)
{
        ASSERT(pRes);
}

ResForceSet::~ResForceSet(void)
{
        SAFEDELETE(pRes);
}

bool
ResForceSet::is_in(unsigned int uL)
{ 
        return labelSet.find(uL) != labelSet.end(); 
}

ResForceSet *
ReadResSet(DataManager* pDM, MBDynParser& HP, unsigned int uL)
{
        ResForceSet *pset = NULL;
        ResForces *pres = NULL;

        if (HP.IsKeyWord("external")) {
                SAFENEW(pres, ExternResForces);
                
        } else if (HP.IsKeyWord("node")) {
                const StructNode *pNode = pDM->ReadNode<const StructNode, Node::STRUCTURAL>(HP);

                if (HP.IsKeyWord("local")) {
                        SAFENEWWITHCONSTRUCTOR(pres, LocalNodeResForces, 
                                        LocalNodeResForces(pNode));

                } else {
                        SAFENEWWITHCONSTRUCTOR(pres, NodeResForces, 
                                        NodeResForces(pNode));
                }
                
        } else {
                silent_cerr("unknown force set type at line " 
                        << HP.GetLineData() << std::endl);
                throw DataManager::ErrGeneric(MBDYN_EXCEPT_ARGS);
        }

        unsigned int nItems = HP.GetInt();
        if (nItems < 1) {
                silent_cerr("illegal number of items " << nItems 
                        << " in set at line " << HP.GetLineData() << std::endl);
                SAFEDELETE(pres);
                throw DataManager::ErrGeneric(MBDYN_EXCEPT_ARGS);
        }

        SAFENEWWITHCONSTRUCTOR(pset, ResForceSet, ResForceSet(uL, pres));

        for (unsigned int i = 0; i < nItems; i++) {
                unsigned int uLabel = HP.GetInt();
                std::pair<std::set<unsigned int>::iterator, bool> rc = 
                        pset->labelSet.insert(uLabel);

                if (!rc.second) {
                        silent_cerr("unable to insert item " << uLabel 
                                << " in set at line " << HP.GetLineData() 
                                << std::endl);
                        SAFEDELETE(pset);
                        throw DataManager::ErrGeneric(MBDYN_EXCEPT_ARGS);
                }
        }

        return pset;
}

ResForceSet **
ReadResSets(DataManager* pDM, MBDynParser& HP)
{
        ResForceSet **ppres = NULL;

        if (HP.IsKeyWord("set")) {
                int nSets = HP.GetInt();

                if (nSets < 1) {
                        silent_cerr("Illegal number of sets (" << nSets 
                                << ") at line " << HP.GetLineData() 
                                << std::endl);
                        throw DataManager::ErrGeneric(MBDYN_EXCEPT_ARGS);
                }

                SAFENEWARR(ppres, ResForceSet*, nSets+1);
                for (unsigned int i = 0; i <= (unsigned int)nSets; i++) {
                        ppres[i] = NULL;
                }

                try {
                        for (unsigned int i = 0; i < (unsigned int)nSets; i++) {
                                ppres[i] = ReadResSet(pDM, HP, i+1);
                        }

                } catch (...) {
                        for (unsigned int i = 0; ppres[i]; i++) {
                                SAFEDELETE(ppres[i]);
                        }
                        SAFEDELETEARR(ppres);
                }
        }

        return ppres;
}

/* ResForces - end */