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