/usr/include/freefoam/meshTools/triangleFuncs.H is in libfreefoam-dev 0.1.0+dfsg-1build1.
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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ 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
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Class
Foam::triangleFuncs
Description
Various triangle functions.
SourceFiles
triangleFuncs.C
\*---------------------------------------------------------------------------*/
#ifndef triangleFuncs_H
#define triangleFuncs_H
#include <OpenFOAM/point.H>
#include <OpenFOAM/label.H>
#include <OpenFOAM/scalar.H>
#include <OpenFOAM/pointField.H>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************ vim: set sw=4 sts=4 et: ************************ //
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