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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2001, 2002, 2003 Stphane Del Pino
// 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// $Id: Cylinder.cpp,v 1.4 2006/10/01 23:25:58 delpinux Exp $
#include <Cylinder.hpp>
#include <TinyVector.hpp>
#include <cmath>
Cylinder::
Cylinder(const TinyVector<3, real_t>& a,
const TinyVector<3, real_t>& b,
const real_t& r)
: Shape(cylinder),
__c1(a), __c2(b),
__center(0.5*(a+b)),
__radius (r),
__radius2(r*r),
__half_height(Norm(__center - __c1)),
__unaryVector(1./(2.*__half_height)*(b-a))
{
;
}
Cylinder::
Cylinder(const Cylinder& C)
: Shape(C),
__c1(C.__c1),
__c2(C.__c2),
__center(C.__center),
__radius(C.__radius),
__radius2(C.__radius2),
__half_height(C.__half_height),
__unaryVector(C.__unaryVector)
{
;
}
std::ostream& Cylinder::
__put(std::ostream& os) const
{
os << "cylinder {\n" << __c1
<< ", " << __c2 << ", " << __radius << '\n';
for (size_t i=0; i<numberOfTransformations(); i++)
os << __trans[i]->povWrite() << '\n';
os << "}\n";
return os;
}
inline bool Cylinder::
__inShape(const TinyVector<3, real_t>& v) const
{
TinyVector<3, real_t> x = v-__center;
real_t ux = __unaryVector * x;
TinyVector<3, real_t> normal (x - (ux * __unaryVector));
return ((std::abs(ux) < __half_height) && (normal * normal < __radius2));
}
ReferenceCounting<Shape> Cylinder::
__getCopy() const
{
return new Cylinder(*this);
}
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