130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration |
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\\ / A nd | For copyright notice see file Copyright
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::polyLine
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Description
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A series of straight line segments, which can also be interpreted as
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a series of control points for splines, etc.
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ToDo
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A future implementation could also handle a closed polyLine.
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SourceFiles
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polyLine.C
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\*---------------------------------------------------------------------------*/
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#ifndef polyLine_H
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#define polyLine_H
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#include "pointField.H"
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#include "scalarList.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class polyLine Declaration
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\*---------------------------------------------------------------------------*/
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class polyLine
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{
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// Private Member Functions
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//- Disallow default bitwise copy construct
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polyLine(const polyLine&);
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//- Disallow default bitwise assignment
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void operator=(const polyLine&);
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protected:
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// Protected data
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//- The control points or ends of each segments
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pointField points_;
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//- The real line length
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scalar lineLength_;
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//- The rational (0-1) cumulative parameter value for each point
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scalarList param_;
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// Protected member functions
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//- Precalculate the rational cumulative parameter value
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// and the line-length
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void calcParam();
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//- Return the line segment and the local parameter [0..1]
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// corresponding to the global lambda [0..1]
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label localParameter(scalar& lambda) const;
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public:
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// Constructors
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//- Construct from components
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polyLine
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(
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const pointField&,
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const bool notImplementedClosed = false
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);
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// Member Functions
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//- Return const-access to the control-points
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const pointField& points() const;
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//- Return the number of line segments
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label nSegments() const;
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//- Return the point position corresponding to the curve parameter
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// 0 <= lambda <= 1
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point position(const scalar) const;
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//- Return the point position corresponding to the local parameter
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// 0 <= lambda <= 1 on the given segment
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point position(const label segment, const scalar) const;
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//- Return the length of the curve
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scalar length() const;
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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