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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2025 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM 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 3 of the License, or
(at your option) any later version.
OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::blockEdges::arcEdge
Description
An arcEdge between two points on a circle. The arc is defined either by a
third point that the arc passes through, or by the angle of the sector and
the axis of the circle.
If the angle-axis specification is used, the axis may not be not
perpendicular to the line connecting the end points. In that case, the axis
is considered to be that of a cylinder, and the arc represents a portion of
a helix on the surface of that cylinder.
SourceFiles
arcEdge.C
\*---------------------------------------------------------------------------*/
#ifndef arcEdge_blockEdge_H
#define arcEdge_blockEdge_H
#include "blockEdge.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace blockEdges
{
/*---------------------------------------------------------------------------*\
Class arcEdge Declaration
\*---------------------------------------------------------------------------*/
class arcEdge
:
public blockEdge
{
// Private Data
//- The start point of the arc
const point p0_;
//- The end point of the arc
const point p1_;
//- The centre of the circle of which the arc is a part
point centre_;
//- The axis of the circle of which the arc is a part
vector axis_;
//- The sector angle of the arc
scalar theta_;
//- The axial length of the arc/helix
scalar length_;
// Private Member Functions
//- Calculate the coordinate system, angle and radius from a mid point
// somewhere within the arc
void calc(const point& pM);
//- Calculate the coordinate system, angle and radius from a sector
// angle and a normal to the plane of the arc
void calc(const scalar theta, const vector& axis);
public:
//- Runtime type information
TypeName("arc");
// Constructors
//- Construct from Istream setting pointsList
arcEdge
(
const dictionary& dict,
const label index,
const searchableSurfaceList& geometry,
const pointField& points,
Istream&
);
//- Disallow default bitwise copy construction
arcEdge(const arcEdge&) = delete;
//- Destructor
virtual ~arcEdge()
{}
// Member Functions
//- Return the point position corresponding to the curve parameter
// 0 <= lambda <= 1
point position(const scalar) const;
//- Return the length of the curve
scalar length() const;
// Member Operators
//- Disallow default bitwise assignment
void operator=(const arcEdge&) = delete;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End of namespace blockEdges
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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