| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2011-2020 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::triangleFuncs | |
| Description | |
| Various triangle functions. | |
| SourceFiles | |
| triangleFuncs.C | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| // Forward declaration of classes | |
| class treeBoundBox; | |
| /*---------------------------------------------------------------------------*\ | |
| Class triangleFuncs Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| class triangleFuncs | |
| { | |
| public: | |
| // Public data types | |
| //- Enumeration defining nearness classification | |
| enum proxType | |
| { | |
| NONE, | |
| POINT, | |
| EDGE | |
| }; | |
| private: | |
| // Private Member Functions | |
| //- Helper function for intersect. Sets pt to be anywhere on the edge | |
| // between oppositeSidePt and thisSidePt depending on both signs. | |
| static void setIntersection | |
| ( | |
| const point& oppositeSidePt, | |
| const scalar oppositeSign, | |
| const point& thisSidePt, | |
| const scalar thisSign, | |
| const scalar tol, | |
| point& pt | |
| ); | |
| //- Helper function. | |
| static void selectPt | |
| ( | |
| const bool select0, | |
| const point& p0, | |
| const point& p1, | |
| point& min | |
| ); | |
| public: | |
| //- Intersect triangle with parallel edges aligned with axis i0. | |
| // Returns true (and intersection in pInter) if any of them intersects | |
| // triangle. Used in intersectBb. | |
| static bool intersectAxesBundle | |
| ( | |
| const point& V0, | |
| const point& V10, | |
| const point& V20, | |
| const label i0, | |
| const pointField& origin, | |
| const scalar maxLength, | |
| point& pInter | |
| ); | |
| //- Does triangle intersect bounding box. | |
| static bool intersectBb | |
| ( | |
| const point& p0, | |
| const point& p1, | |
| const point& p2, | |
| const treeBoundBox& cubeBb | |
| ); | |
| //- Does triangle intersect plane. Return bool and set intersection segment. | |
| static bool intersect | |
| ( | |
| const point& va0, | |
| const point& va10, | |
| const point& va20, | |
| const point& basePoint, | |
| const vector& normal, | |
| point& pInter0, | |
| point& pInter1 | |
| ); | |
| //- Do triangles intersect. Return bool and set intersection segment. | |
| static bool intersect | |
| ( | |
| const point& va0, | |
| const point& va10, | |
| const point& va20, | |
| const point& vb0, | |
| const point& vb10, | |
| const point& vb20, | |
| point& pInter0, | |
| point& pInter1 | |
| ); | |
| }; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |