InfiniteWall.cc

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//Copyright (c) 2013-2014, The MercuryDPM Developers Team. All rights reserved.
//For the list of developers, see <http://www.MercuryDPM.org/Team>.
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#include <limits>

#include "InfiniteWall.h"
#include "Particles/BaseParticle.h"
#include "InteractionHandler.h"

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

InfiniteWall::InfiniteWall(const InfiniteWall& w)
        : BaseWall(w)
{
    normal_ = w.normal_;
    factor_ = w.factor_;
    logger(DEBUG, "InfiniteWall::InfiniteWall(const InfiniteWall &p) finished");
}

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

InfiniteWall* InfiniteWall::copy() const
{
    return new InfiniteWall(*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 InfiniteWall::set(Vec3D normal, Vec3D point)
{
    setNormal(normal);
    setPosition(point);
}

void InfiniteWall::setNormal(const Vec3D normal)
{
    factor_ = 1. / Vec3D::getLength(normal);
    normal_ = normal * factor_;
}

void InfiniteWall::set(Vec3D normal, Mdouble positionInNormalDirection)
{
    logger(WARN, "InfiniteWall::set(Vec3D, Mdouble) is deprecated. Use set(Vec3D, Vec3D) instead.");
    set(normal, positionInNormalDirection*normal);
}

void InfiniteWall::move(Mdouble positionInNormalDirection)
{
    logger(WARN, "InfiniteWall::move(Mdouble) is deprecated. Use move(Vec3D) instead.");
    setPosition(positionInNormalDirection * normal_ / factor_);
}

Mdouble InfiniteWall::getDistance(const Vec3D& otherPosition) const
{
    return Vec3D::dot(getPosition()-otherPosition, normal_);
}

bool InfiniteWall::getDistanceAndNormal(const BaseParticle& p, Mdouble& distance, Vec3D& normal_return) const
{
    distance = getDistance(p.getPosition());
    if (distance >= p.getWallInteractionRadius())
        return false;
    normal_return = normal_;
    return true;
}

void InfiniteWall::read(std::istream& is)
{
    BaseWall::read(is);
    std::string dummy;
    is >> dummy >> normal_;
    is >> dummy >> factor_;
}

void InfiniteWall::oldRead(std::istream& is)
{
    std::string dummy;
    Vec3D velocity;
    Vec3D position;
    is >> dummy >> normal_ >> dummy >> position >> dummy >> velocity;
    setPosition(position);
    setVelocity(velocity);
}

void InfiniteWall::write(std::ostream& os) const
{
    BaseWall::write(os);
    os << " normal " << normal_
       << " factor "<< factor_;
}

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

Vec3D InfiniteWall::getNormal() const
{
    return normal_;
}

BaseInteraction* InfiniteWall::getInteractionWith(BaseParticle* p, Mdouble timeStamp, InteractionHandler* interactionHandler)
{
    Mdouble distance = getDistance(p->getPosition());
    if (distance < p->getWallInteractionRadius())
    {
        BaseInteraction* interaction = interactionHandler->getInteraction(p, this, timeStamp);
        interaction->setNormal(-normal_);
        interaction->setDistance(distance);
        interaction->setOverlap(p->getRadius() - distance);
//        interaction->setContactPoint(p->getPosition()-(p->getRadius()- 1.0 * interaction->getOverlap())*interaction->getNormal());
        interaction->setContactPoint(p->getPosition()-(p->getRadius() - 0.5 * interaction->getOverlap())*interaction->getNormal());
        return interaction;
    }
    else
    {
        return nullptr;
    }
}