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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 "Foundation/console.h"
#include "Geometry/RandomBlockGenerator.h"
#include "Geometry/SimpleParticle.h"
#include "Geometry/GridIterator.h"
#include "Geometry/SimpleNTable.h"
#include "Geometry/Sphere3d.h"
#include "Geometry/Plane.h"
#include "Geometry/ParticleFitter.h"
#include <algorithm>
#include <stdexcept>
#include <float.h>
namespace esys
{
namespace lsm
{
RandomBlockGenerator::RandomBlockGenerator(
NTable &nTable,
ParticlePool &particlePool,
const BoundingBox &bBox,
const BoolVector &periodicDimensions,
double tolerance,
double minSphereRadius,
double maxSphereRadius,
const PlaneVector &fitPlaneVector,
int maxInsertionFailures
)
: BlockGenerator(nTable, particlePool, bBox, periodicDimensions, tolerance),
m_minRadius(minSphereRadius),
m_maxRadius(maxSphereRadius),
m_fitPlaneVector(fitPlaneVector),
m_maxInsertionFailures(maxInsertionFailures)
{
}
RandomBlockGenerator::~RandomBlockGenerator()
{
}
double RandomBlockGenerator::getRandom(double minVal, double maxVal) const
{
return
minVal
+
((maxVal-minVal)*(static_cast<double>(rand()))/(static_cast<double>(RAND_MAX)));
}
double RandomBlockGenerator::getGridRadius() const
{
return m_maxRadius;
}
double RandomBlockGenerator::getRadius() const
{
return getRandom(m_minRadius, m_maxRadius);
}
class PlaneComparer
{
public:
PlaneComparer(const SimpleParticle &particle)
: m_pParticle(&particle)
{
}
inline bool operator()(const Plane &plane1, const Plane &plane2) const
{
return
(
plane1.sep(m_pParticle->getPos())
<
plane2.sep(m_pParticle->getPos())
);
}
private:
const SimpleParticle *m_pParticle;
};
const PlaneVector &RandomBlockGenerator::getFitPlaneVector() const
{
return m_fitPlaneVector;
}
Plane RandomBlockGenerator::getClosestFitPlane(const SimpleParticle &particle) const
{
PlaneVector fitPlanes = getFitPlaneVector();
if (fitPlanes.size() > 0) {
std::sort(fitPlanes.begin(), fitPlanes.end(), PlaneComparer(particle));
return fitPlanes[0];
}
return Plane(Vec3(-1.0, 0, 0), Vec3(DBL_MAX/2, DBL_MAX/2, DBL_MAX/2));
}
Vec3 RandomBlockGenerator::getRandomPoint() const
{
return
Vec3(
getRandom(getBBox().getMinPt().X(), getBBox().getMaxPt().X()),
getRandom(getBBox().getMinPt().Y(), getBBox().getMaxPt().Y()),
getRandom(getBBox().getMinPt().Z(), getBBox().getMaxPt().Z())
);
}
RandomBlockGenerator::ParticleVector RandomBlockGenerator::getClosestNeighbors(
const SimpleParticle& particle,
int numClosest
)
{
ParticleVector neighbourVector =
getNTable().getUniqueNeighbourVector(particle.getPos(), m_maxRadius + getTolerance());
std::sort(neighbourVector.begin(), neighbourVector.end(), ParticleComparer(particle));
if (neighbourVector.size() > static_cast<size_t>(numClosest)) {
neighbourVector.erase(neighbourVector.begin() + numClosest, neighbourVector.end());
}
return neighbourVector;
}
bool RandomBlockGenerator::particleFits(const SimpleParticle &particle) const
{
return
(
(particle.getRad() >= m_minRadius)
&&
(particle.getRad() <= m_maxRadius)
&&
BlockGenerator::particleFits(particle)
);
}
int RandomBlockGenerator::getMaxInsertionFailures() const
{
return m_maxInsertionFailures;
}
FitterPtrVector RandomBlockGenerator::getFitterPtrVector()
{
FitterPtrVector fitters;
fitters.push_back(FitterPtr(new MoveToSurfaceFitter(*this)));
if (is2d())
{
fitters.push_back(FitterPtr(new TwoDParticleFitter(*this)));
if (getFitPlaneVector().size() > 0) {
fitters.push_back(FitterPtr(new TwoDPlaneParticleFitter(*this)));
}
}
else
{
fitters.push_back(FitterPtr(new ThreeDParticleFitter(*this)));
if (getFitPlaneVector().size() > 0) {
fitters.push_back(FitterPtr(new ThreeDPlaneParticleFitter(*this)));
}
}
return fitters;
}
void RandomBlockGenerator::generateFillParticles()
{
int numFails = 0;
int insertCount = 0;
FitterPtrVector fitters = getFitterPtrVector();
SimpleParticle particle = ParticleFitter::INVALID;
SimpleParticle fitParticle = ParticleFitter::INVALID;
Plane plane;
ParticleVector neighbours;
while (numFails < getMaxInsertionFailures()) {
fitParticle = ParticleFitter::INVALID;
particle = generateParticle(getRandomPoint());
neighbours = getClosestNeighbors(particle, 4);
plane = getClosestFitPlane(particle);
for (
FitterPtrVector::iterator it = fitters.begin();
(
(it != fitters.end())
&&
(!fitParticle.isValid())
);
it++
)
{
fitParticle = (*it)->getFitParticle(particle, neighbours, plane);
}
if (fitParticle.isValid()) {
numFails = 0;
insertCount++;
insertParticle(fitParticle);
} else {
numFails++;
}
}
console.Info()
<< "BoundingBox: minPt = " << getBBox().getMinPt()
<< ", maxPt = " << getBBox().getMaxPt() << "\n"
<< "BoundingBox: sizes = " << getBBox().getSizes() << "\n";
for (
FitterPtrVector::iterator it = fitters.begin();
(it != fitters.end());
it++
) {
console.Info() << (*(*it)).toString() << "\n";
}
console.Info() << "Total inserted = " << insertCount << "\n";
}
void RandomBlockGenerator::generate()
{
generateSeedParticles();
generateFillParticles();
}
};
};
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