Program Listing for File SimulationDataPBF.cpp

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#include "SimulationDataPBF.h"
#include "SPlisHSPlasH/SPHKernels.h"
#include "SPlisHSPlasH/Simulation.h"

using namespace SPH;

SimulationDataPBF::SimulationDataPBF() :
    m_deltaX(),
    m_lambda(),
    m_lastX(),
    m_oldX()
{
}

SimulationDataPBF::~SimulationDataPBF(void)
{
    cleanup();
}

void SimulationDataPBF::init()
{
    Simulation *sim = Simulation::getCurrent();
    const unsigned int nModels = sim->numberOfFluidModels();

    m_lambda.resize(nModels);
    m_deltaX.resize(nModels);
    m_oldX.resize(nModels);
    m_lastX.resize(nModels);
    for (unsigned int i = 0; i < nModels; i++)
    {
        FluidModel *fm = sim->getFluidModel(i);
        m_lambda[i].resize(fm->numParticles(), 0.0);
        m_deltaX[i].resize(fm->numParticles(), Vector3r::Zero());
        m_oldX[i].resize(fm->numParticles(), Vector3r::Zero());
        m_lastX[i].resize(fm->numParticles(), Vector3r::Zero());
    }
    reset();
}

void SimulationDataPBF::cleanup()
{
    Simulation *sim = Simulation::getCurrent();
    const unsigned int nModels = sim->numberOfFluidModels();

    for (unsigned int i = 0; i < nModels; i++)
    {
        m_lambda[i].clear();
        m_deltaX[i].clear();
        m_oldX[i].clear();
        m_lastX[i].clear();
    }
    m_lambda.clear();
    m_deltaX.clear();
    m_oldX.clear();
    m_lastX.clear();
}

void SimulationDataPBF::reset()
{
    Simulation *sim = Simulation::getCurrent();
    const unsigned int nModels = sim->numberOfFluidModels();

    for (unsigned int i = 0; i < nModels; i++)
    {
        FluidModel *fm = sim->getFluidModel(i);
        for (unsigned int j = 0; j < fm->numParticles(); j++)
        {
            m_deltaX[i][j].setZero();
            m_lambda[i][j] = 0.0;
            getLastPosition(i, j) = fm->getPosition(j);
            getOldPosition(i, j) = fm->getPosition(j);
        }
    }
}

void SimulationDataPBF::performNeighborhoodSearchSort()
{
    Simulation *sim = Simulation::getCurrent();
    const unsigned int nModels = sim->numberOfFluidModels();

    for (unsigned int i = 0; i < nModels; i++)
    {
        FluidModel *fm = sim->getFluidModel(i);
        const unsigned int numPart = fm->numActiveParticles();
        if (numPart != 0)
        {
            auto const& d = sim->getNeighborhoodSearch()->point_set(fm->getPointSetIndex());
            d.sort_field(&m_lambda[i][0]);
            d.sort_field(&m_deltaX[i][0]);
            d.sort_field(&m_oldX[i][0]);
            d.sort_field(&m_lastX[i][0]);
        }
    }
}

void SimulationDataPBF::emittedParticles(FluidModel *model, const unsigned int startIndex)
{
    // initialize lastX values for new particles
    const unsigned int fluidModelIndex = model->getPointSetIndex();
    for (unsigned int j = startIndex; j < model->numActiveParticles(); j++)
    {
        m_lastX[fluidModelIndex][j] = model->getPosition(j);
    }
}