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/////////////////////////////////////////////////////////////
// //
// Copyright (c) 2003-2014 by The University of Queensland //
// Centre for Geoscience Computing //
// http://earth.uq.edu.au/centre-geoscience-computing //
// //
// Primary Business: Brisbane, Queensland, Australia //
// Licensed under the Open Software License version 3.0 //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
/////////////////////////////////////////////////////////////
#include "ECornerInteraction.h"
/*!
default constructor
*/
ECornerInteraction::ECornerInteraction()
{
m_p=NULL;
m_corner=NULL;
m_k=0.0;
m_inner_flag=false;
}
/*!
constructor with parameters
\param p a pointer to the particle
\param c a pointer to the corner
\param param the interaction parameters
\param iflag
*/
ECornerInteraction::ECornerInteraction(CParticle* p,Corner* c,ETriMeshIP param,bool iflag)
{
m_p=p;
m_corner=c;
// scale elastic param
double f=1.0;
if(!CParticle::getDo2dCalculations()){
f*=this->m_p->getRad();
}
m_k=f*param.k;
m_inner_flag=iflag;
}
/*!
destructor
*/
ECornerInteraction::~ECornerInteraction()
{}
/*!
calculate & apply forces
*/
void ECornerInteraction::calcForces()
{
Vec3 ppos=m_p->getPos();
if(m_corner->isValidContact(ppos)){ // if no contact to adjacent edges or triangles
double sep=m_corner->sep(ppos);
if(sep<m_p->getRad()){
Vec3 force=m_k*(m_p->getRad()-sep)*m_corner->getDirectionFromPoint(ppos);
m_p->applyForce(force,ppos);
if(m_inner_flag) m_corner->applyForce(-1.0*force);
}
}
}
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