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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: Structured3DMeshShape.hpp,v 1.2 2004/08/23 10:00:45 delpinux Exp $
#ifndef STUCTURED_3D_MESH_SHAPE_HPP
#define STUCTURED_3D_MESH_SHAPE_HPP
#include <TinyVector.hpp>
#include <Array3DShape.hpp>
#include <StreamCenter.hpp>
/*!
\class Structured3DMeshShape
This class defines the shape of a 3d structured mesh, vector, ...
\author Stphane Del Pino.
*/
class Structured3DMeshShape
{
private:
//! The shape.
Array3DShape __shape;
TinyVector<3,real_t> __stepSize;
TinyVector<3> __a;
TinyVector<3> __b;
TinyVector<3> __dimensions;
public:
inline size_t operator()(const size_t& i, const size_t& j, const size_t& k) const
{
return __shape(i,j,k);
}
inline const Array3DShape& shape() const
{
return __shape;
}
inline const TinyVector<3>& a() const
{
return __a;
}
inline const real_t& a(const size_t& i) const
{
return __a[i];
}
const TinyVector<3>& b() const
{
return __b;
}
inline const real_t& b(const size_t& i) const
{
return __b[i];
}
inline const real_t& dimension(const size_t& i) const
{
return __dimensions[i];
}
const real_t& hx() const
{
return __stepSize[0];
}
const real_t& hy() const
{
return __stepSize[1];
}
const real_t& hz() const
{
return __stepSize[2];
}
bool operator==(const Structured3DMeshShape& s) const
{
return ((__shape==s.__shape)&&
(__a==s.__a)&&
(__b==s.__b));
}
//! Access to the first component of the shape.
inline size_t nx() const
{
return __shape.nx();
}
//! Access to the second component of the shape.
inline size_t ny() const
{
return __shape.ny();
}
//! Access to the third component of the shape.
inline size_t nz() const
{
return __shape.nz();
}
//! Returns the product of shape components (ie: the number of elements when tensorized).
size_t numberOfVertices() const
{
return __shape.nx()*__shape.ny()*__shape.nz();
}
//! Computes the number of edges
size_t numberOfEdges() const
{
return ((__shape.nx()-1)*__shape.ny()*__shape.nz()
+__shape.nx()*(__shape.ny()-1)*__shape.nz()
+__shape.nx()*__shape.ny()*(__shape.nz()-1));
}
//! Returns the product of shape components (ie: the number of elements when tensorized).
size_t numberOfCells() const
{
return (__shape.nx()-1)*(__shape.ny()-1)*(__shape.nz()-1);
}
//! Copy constructor
const Structured3DMeshShape& operator=(const Structured3DMeshShape& s)
{
__shape=s.__shape;
__stepSize=s.__stepSize;
__a=s.__a;
__b=s.__b;
__dimensions=s.__dimensions;
return *this;
}
/*! Default constructor.
The generated Structured3DMeshShape is not valid!
*/
Structured3DMeshShape()
{
;
}
//! Constructs a Structured3DMeshShape.
Structured3DMeshShape(const size_t& i, const size_t& j, const size_t& k,
const TinyVector<3>& v0, const TinyVector<3>& v1)
: __shape(i,j,k),
__a( TinyVector<3>( (v0[0]<v1[0]) ? v0[0] : v1[0],
(v0[1]<v1[1]) ? v0[1] : v1[1],
(v0[2]<v1[2]) ? v0[2] : v1[2] )),
__b( TinyVector<3>( (v0[0]>v1[0]) ? v0[0] : v1[0],
(v0[1]>v1[1]) ? v0[1] : v1[1],
(v0[2]>v1[2]) ? v0[2] : v1[2] )),
__dimensions(std::abs(v0[0]-v1[0]),
std::abs(v0[1]-v1[1]),
std::abs(v0[2]-v1[2]))
{
for (size_t n=0; n<3; ++n)
__stepSize[n] = (__b[n]-__a[n])/(__shape[n]-1.);
}
//! Copy constructor
Structured3DMeshShape(const Structured3DMeshShape& s)
: __shape(s.__shape),
__stepSize(s.__stepSize),
__a(s.__a),
__b(s.__b),
__dimensions(s.__dimensions)
{
if ((nx()<=1)||(ny()<=1)||nz()<=1)
fferr(2) << "\nthe mesh shape is not valid: "
<< __shape << '\n';
}
~Structured3DMeshShape()
{
;
}
};
#endif // STUCTURED_3D_MESH_SHAPE_HPP
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