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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 "Geometry/BlockGenerator.h"
#include "Geometry/GridIterator.h"
#include "Geometry/SimpleParticle.h"
#include <float.h>
namespace esys
{
namespace lsm
{
BlockGenerator::BlockGenerator(
NTable &nTable,
ParticlePool &particlePool,
const BoundingBox &bBox,
const BoolVector &periodicDimensions,
double tolerance
) : ParticleGenerator(nTable, particlePool),
m_bBox(bBox),
m_periodicDimensions(periodicDimensions),
m_tolerance(tolerance)
{
}
BlockGenerator::~BlockGenerator()
{
}
const BoundingBox &BlockGenerator::getBBox() const
{
return m_bBox;
}
size_t BlockGenerator::getNumParticles() const
{
return m_idSet.size();
}
int BlockGenerator::getNextId()
{
return static_cast<int>(getNTable().getNumParticles());
}
double BlockGenerator::getTolerance() const
{
return m_tolerance;
}
bool BlockGenerator::is2d() const
{
return ((getBBox().getMaxPt().Z() - getBBox().getMinPt().Z()) <= 0);
}
bool BlockGenerator::particleFitsInBBox(const SimpleParticle &particle) const
{
return
(
(
m_periodicDimensions[0]
||
(
m_bBox.contains(particle.getPos() - Vec3(particle.getRad(), 0, 0), getTolerance())
&&
m_bBox.contains(particle.getPos() + Vec3(particle.getRad(), 0, 0), getTolerance())
)
)
&&
(
m_periodicDimensions[1]
||
(
m_bBox.contains(particle.getPos() - Vec3(0, particle.getRad(), 0), getTolerance())
&&
m_bBox.contains(particle.getPos() + Vec3(0, particle.getRad(), 0), getTolerance())
)
)
&&
(
is2d() || m_periodicDimensions[2]
||
(
m_bBox.contains(particle.getPos() - Vec3(0, 0, particle.getRad()), getTolerance())
&&
m_bBox.contains(particle.getPos() + Vec3(0, 0, particle.getRad()), getTolerance())
)
)
);
}
bool BlockGenerator::particleFitsWithNeighbours(const SimpleParticle &particle) const
{
const ParticleVector neighbours =
getNTable().getNeighbourVector(
particle.getPos(),
particle.getRad() + getTolerance()
);
ParticleVector::const_iterator iter = neighbours.begin();
for (; iter != neighbours.end(); iter++) {
const double dist = (particle.getPos() - (*iter)->getPos()).norm();
if (dist < ((particle.getRad() + (*iter)->getRad()) - getTolerance())) {
return false;
}
}
return true;
}
bool BlockGenerator::particleFits(const SimpleParticle &particle) const
{
return (particleFitsInBBox(particle) && particleFitsWithNeighbours(particle));
}
void BlockGenerator::insertParticle(const SimpleParticle &particle)
{
SimpleParticle *pParticle = getParticlePool().construct(particle);
m_particleVector.push_back(pParticle);
m_idSet.insert(pParticle->getID());
getNTable().insert(pParticle);
}
bool BlockGenerator::contains(const SimpleParticle &particle) const
{
return (m_idSet.find(particle.getID()) != m_idSet.end());
}
SimpleParticle BlockGenerator::generateParticle(const Vec3 &point)
{
return SimpleParticle(point, getRadius(), getNextId());
}
void BlockGenerator::generateSeedParticles()
{
GridIterator pointIt = GridIterator(getBBox(), getGridRadius());
while (pointIt.hasNext()) {
SimpleParticle particle = generateParticle(pointIt.next());
if (particleFits(particle)) {
insertParticle(particle);
}
}
}
};
};
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