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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 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::extrudeModels::path
Description
Extrudes by transforming points along an curve defined as an edgeMesh
Uses rotation minimising frames (RMF) algorithm, which is based on
the Frenet-Serret equations, and described in:
\verbatim
Wang, W., Jüttler, B., Zheng, D., & Liu, Y. (2008).
Computation of rotation minimizing frames.
ACM Transactions on Graphics (TOG), 27(1), 1-18.
\endverbatim
\*---------------------------------------------------------------------------*/
#ifndef path_extrudeModel_H
#define path_extrudeModel_H
#include "extrudeModel.H"
#include "pointField.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
class edgeMesh;
namespace extrudeModels
{
/*---------------------------------------------------------------------------*\
Class path Declaration
\*---------------------------------------------------------------------------*/
class path
:
public extrudeModel
{
// Private Data
//- Coordinates defining the extrusion curve
autoPtr<edgeMesh> eMeshPtr_;
//- Cumulative point distances along the extrusion curve
scalarField distances_;
//- Extrude direction for each frame along the extrusion curve
vectorField directions_;
//- Normals to each direction frame
vectorField normals_;
//- Transposed orthonormal rotation tensor at the first layer
tensor R0T_;
// Private Member Functions
//- Find cumulative point span which contains the given distance
label findFrameIndex(const scalar distance) const;
// Private Static Member Functions
//- Cartesian axis perpendicular to the supplied direction
static vector orthogonal(const vector& dirn);
//- Frenet-Serret rotational tensor
static tensor orthonormalBasis(const vector& T, const vector& N);
public:
//- Runtime type information
TypeName("path");
// Constructors
//- Construct from dictionary
path(const dictionary& dict);
//- Destructor
virtual ~path();
// Member Operators
point operator()
(
const point& surfacePoint,
const vector& surfaceNormal,
const label layer
) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace extrudeModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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