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/* This file is part of the OpenLB library
*
* Copyright (C) 2018 Adrian Kummerlaender
* E-mail contact: info@openlb.net
* The most recent release of OpenLB can be downloaded at
* <http://www.openlb.net/>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef HYPERPLANE_2D_HH
#define HYPERPLANE_2D_HH
#include "hyperplane2D.h"
#include "core/olbDebug.h"
namespace olb {
template <typename T>
Hyperplane2D<T>& Hyperplane2D<T>::originAt(const Vector<T,2>& o)
{
origin[0] = o[0] - 2*std::numeric_limits<T>::epsilon()*fabs(o[0]);
origin[1] = o[1] - 2*std::numeric_limits<T>::epsilon()*fabs(o[1]);
return *this;
}
template <typename T>
Hyperplane2D<T>& Hyperplane2D<T>::centeredIn(const Cuboid2D<T>& cuboid)
{
const Vector<T,2>& cuboidOrigin = cuboid.getOrigin();
const Vector<int,2>& extend = cuboid.getExtend();
const T deltaR = cuboid.getDeltaR();
origin[0] = (cuboidOrigin[0] + 0.5 * deltaR * extend[0]);
origin[1] = (cuboidOrigin[1] + 0.5 * deltaR * extend[1]);
origin[0] -= 2*std::numeric_limits<T>::epsilon()*fabs(origin[0]);
origin[1] -= 2*std::numeric_limits<T>::epsilon()*fabs(origin[1]);
return *this;
}
template <typename T>
Hyperplane2D<T>& Hyperplane2D<T>::parallelTo(const Vector<T,2>& direction)
{
u = direction;
normal = { u[1], -u[0] };
normal.normalize();
OLB_POSTCONDITION(util::nearZero(util::dotProduct2D(u,normal)));
return *this;
}
template <typename T>
Hyperplane2D<T>& Hyperplane2D<T>::normalTo(const Vector<T,2>& n)
{
normal = n;
if ( util::nearZero(normal[0]*normal[1]) ) {
if ( util::nearZero(normal[0]) ) {
u = {T(1), T()};
}
else if ( util::nearZero(normal[1]) ) {
u = {T(), T(1)};
}
}
else {
u = {normal[1], -normal[0]};
}
u.normalize();
normal.normalize();
OLB_POSTCONDITION(util::nearZero(util::dotProduct2D(u,normal)));
return *this;
}
template <typename T>
bool Hyperplane2D<T>::isParallelToX() const
{
return util::nearZero(util::dotProduct2D(normal, {1,0}));
}
template <typename T>
bool Hyperplane2D<T>::isParallelToY() const
{
return util::nearZero(util::dotProduct2D(normal, {0,1}));
}
}
#endif
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