SphericalWall.cc

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//Copyright (c) 2013-2014, The MercuryDPM Developers Team. All rights reserved.
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#include <limits>
#include <Logger.h>
#include "Logger.h"
#include "SphericalWall.h"
#include "Particles/BaseParticle.h"
#include "InteractionHandler.h"
#include "WallHandler.h"
#include "DPMBase.h"

SphericalWall::SphericalWall()
{
    radius_ = std::numeric_limits<double>::quiet_NaN();
    logger(DEBUG, "SphericalWall::SphericalWall ) finished");
}

SphericalWall::SphericalWall(const SphericalWall& w)
        : BaseWall(w)
{
    radius_ = w.radius_;
    logger(DEBUG, "SphericalWall::SphericalWall(const SphericalWall &p) finished");
}

SphericalWall::SphericalWall(Mdouble radius, const ParticleSpecies* species)
{
    setRadius(radius);
}

SphericalWall::~SphericalWall()
{
    logger(DEBUG, "SphericalWall::~SphericalWall finished");
}

SphericalWall* SphericalWall::copy() const
{
    return new SphericalWall(*this);
}

/*
 * \param[in] normal A Vec3D that represents the normal to the wall.
 * \param[in] point A Vec3D which is a point on the wall.
 * \details Sets the wall such that for all points x on the wall it holds that 
 * normal*x=normal*point.
 */
void SphericalWall::setRadius(Mdouble radius)
{
    logger.assert(radius>=0,"radius=% cannot be negative",radius);
    radius_=radius;
}

Mdouble SphericalWall::getDistance(const Vec3D& otherPosition) const
{
    return Vec3D::getLength(getPosition()-otherPosition);
}

Mdouble SphericalWall::getRadius() const
{
    return radius_;
}

bool SphericalWall::getDistanceAndNormal(const BaseParticle& p, Mdouble& distance, Vec3D& normal_return) const
{
    normal_return = p.getPosition()-getPosition();
    distance = Vec3D::getLength(normal_return)-radius_;
    if (distance >= p.getWallInteractionRadius())
        return false;
    normal_return/=distance+radius_;
    //logger(WARN,"p% q% q% q% q%", getPosition(), p.getPosition(), normal_return, distance, p.getWallInteractionRadius());
    return true;
}

void SphericalWall::read(std::istream& is)
{
    BaseWall::read(is);
    std::string dummy;
    is >> dummy >> radius_;
}

void SphericalWall::write(std::ostream& os) const
{
    BaseWall::write(os);
    os << " radius " << radius_;
}

std::string SphericalWall::getName() const
{
    return "SphericalWall";
}