| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / 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 | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| 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 | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |