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/////////////////////////////////////////////////////////////
// //
// Copyright (c) 2003-2011 by The University of Queensland //
// Earth Systems Science Computational Centre (ESSCC) //
// http://www.uq.edu.au/esscc //
// //
// Primary Business: Brisbane, Queensland, Australia //
// Licensed under the Open Software License version 3.0 //
// http://www.opensource.org/licenses/osl-3.0.php //
// //
/////////////////////////////////////////////////////////////
#include "RandomBlock.h"
//-- IO includes --
#include <fstream>
#include <iomanip>
using std::ofstream;
//-- System includes --
#include <cstdlib>
using std::srand;
/*!
Constructor of CRandomBlock
\param xmin minimum in x-direction
\param xmax maximum in x-direction
\param ymin minimum in y-direction
\param ymax maximum in y-direction
\param rmin minimum particle radius
\param rmax maximum particle radius
\param mcd maximum relative distance for bond generation
*/
CRandomBlock2D::CRandomBlock2D(double xmin,double xmax,double ymin,double ymax,double rmin,double rmax,double mcd, bool circ_x)
{
m_xmin=xmin;
m_xmax=xmax;
m_ymin=ymin;
m_ymax=ymax;
m_rmin=rmin;
m_rmax=rmax;
m_circ_x=circ_x;
m_maxConnDist=mcd;
// setup borders
if(!circ_x) {
Borders.push_back(Line(Vec3(1.0,0.0,0.0),Vec3(m_xmin,0.0,0.0))); // left
Borders.push_back(Line(Vec3(-1.0,0.0,0.0),Vec3(m_xmax,0.0,0.0))); // right
}
Borders.push_back(Line(Vec3(0.0,1.0,0.0),Vec3(0.0,m_ymin,0.0))); // bottom
Borders.push_back(Line(Vec3(0.0,-1.0,0.0),Vec3(0.0,m_ymax,0.0))); // top
// neighbor table
m_snt=new CSimple2DNTable(Vec3(m_xmin,m_ymin,0.0),Vec3(m_xmax-m_xmin,m_ymax-m_ymin,0.0),2.1*rmax,circ_x);
}
CRandomBlock2D::~CRandomBlock2D()
{
if(m_snt!=NULL) delete m_snt;
}
/*!
Generate a random point within the space of the block
*/
Vec3 CRandomBlock2D::getAPoint()
{
double px,py;
px=m_random(m_xmin+m_rmin,m_xmax-m_rmin);
py=m_random(m_ymin+m_rmin,m_ymax-m_rmin);
return Vec3(px,py,0.0);
}
/*!
Fill the space in the block
\param tries number of times the insertion of a particle is tried
\param seed seed for the random number generator
*/
void CRandomBlock2D::generate(int tries,unsigned int seed)
{
srand(seed);
// get limits
int imin=int(floor(m_xmin/(m_rmax*2.0)));
int jmin=int(floor(m_ymin/(m_rmax*sqrt(3.0))));
int imax=int(ceil(m_xmax/(m_rmax*2.0)));
int jmax=int(ceil(m_ymax/(m_rmax*sqrt(3.0))));
// do the seeding
for(int i=imin;i<=imax;i++){
for(int j=jmin;j<=jmax;j++){
// calc random radius
double r=m_random(m_rmin,m_rmax);
// get position
double px=(double(i)+0.5*double(j%2))*m_rmax*2.0;
double py=double(j)*sqrt(3.0)*m_rmax;
SimpleParticle Po=SimpleParticle(Vec3(px,py,0),r,getNParts());
bool fit=checkAFit(Po);
if(fit){
insertParticle(Po);
}
}
}
// fill space
fillSpace(tries);
// get set of interactions
m_snt->getInteractions(m_iset,m_maxConnDist);
}
/*!
Insert a particle into the internal structures
\param P the particle
*/
void CRandomBlock2D::insertParticle(const SimpleParticle P)
{
m_bpart.push_back(P);
m_snt->insertParticle(P);
}
/*!
Write the particles contained in the random block into a
LSM geometry file v 1.1
\param filename the name of the file
*/
void CRandomBlock2D::writeToGeoFile(const string& filename)
{
ofstream outfile;
// open file
outfile.open(filename.c_str());
outfile << "LSMGeometry 1.2" << endl;
// bounding box
outfile << "BoundingBox " << m_xmin << " " << m_ymin << " -0.1 " << m_xmax << " " << m_ymax << " 0.1" << endl;
outfile << "PeriodicBoundaries " << m_circ_x << " 0 0" << endl;
outfile << "Dimension 2D" << endl;
// particles
outfile << "BeginParticles" << endl;
outfile << "Simple" << endl;
outfile << m_bpart.size() << endl;
const int precision = 15;
int count=0;
for(vector<SimpleParticle>::const_iterator iter=m_bpart.begin();
iter!=m_bpart.end();
iter++){
outfile << std::setprecision(precision) << iter->getPos().X() << " " << iter->getPos().Y() << " "
<< iter->getPos().Z() << " " << iter->getRad() << " "
<< iter->getID() << " " << iter->getTag() << "\n";
count++;
}
outfile << "EndParticles" << endl;
// connections
outfile << "BeginConnect" << endl;
outfile << m_iset.size() << endl;
for(set<BasicInteraction,BILess>::const_iterator iter=m_iset.begin();
iter!=m_iset.end();
iter++){
outfile << *iter << "\n";
}
outfile << "EndConnect" << endl;
// close file
outfile.close();
}
/*!
calculate the porosity of the material
*/
double CRandomBlock2D::calcPorosity()
{
double a_total,a_part;
a_total=(m_xmax-m_xmin)*(m_ymax-m_ymin);
a_part=0.0;
for(vector<SimpleParticle>::const_iterator iter=m_bpart.begin();
iter!=m_bpart.end();
iter++){
double radius=iter->getRad();
a_part+=M_PI*radius*radius;
}
return 1.0-a_part/a_total;
}
/*!
return a histogram of the particle size distribution
\param nbins number of bins
*/
vector<pair<double,double> > CRandomBlock2D::getSizeDistribution(int nbins)
{
vector<pair<double,double> >res(nbins);
double inc=1.0/m_bpart.size();
// setup bin centres
for(int i=0;i<nbins;i++){
double bc=m_rmin+(m_rmax-m_rmin)*((double(i)+0.5)/double(nbins));
res[i].first=bc;
}
// calc distribution
for(vector<SimpleParticle>::const_iterator iter=m_bpart.begin();
iter!=m_bpart.end();
iter++){
double radius=iter->getRad();
int bin=int(((radius-m_rmin)/(m_rmax+m_small_value-m_rmin))*double(nbins));
res[bin].second+=inc;
}
return res;
}
/*!
Tag particle closest to a given position
\param pos the position
\param tag the tag
*/
void CRandomBlock2D::tagParticleClosestTo(const Vec3& pos,int tag)
{
int id=m_snt->getClosestParticleID(pos);
vector<SimpleParticle>::iterator iter=m_bpart.begin();
while((iter!=m_bpart.end()) && (iter->getID()!=id)) iter++;
if(iter!=m_bpart.end()) iter->setTag(tag);
}
/*!
Tag particles along x-edges
\param tag1 tag for particles along x_min
\param tag2 tag for particles along x_max
\param d maximum distance from the edge at which a particle gets tagged
*/
void CRandomBlock2D::tagEdgeY(int tag1,int tag2,double d)
{
for(vector<SimpleParticle>::iterator iter=m_bpart.begin();
iter!=m_bpart.end();
iter++){
double py=iter->getPos().Y();
double r=iter->getRad();
if(py-m_ymin<r+d) iter->setTag(tag1);
if(m_ymax-py<r+d) iter->setTag(tag2);
}
}
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