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00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2005 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software; you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by the 00013 Free Software Foundation; either version 2 of the License, or (at your 00014 option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM; if not, write to the Free Software Foundation, 00023 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00024 00025 Class 00026 arrow2D 00027 00028 Description 00029 2D arrow. 00030 00031 \*---------------------------------------------------------------------------*/ 00032 00033 #include "Gstream.H" 00034 00035 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00036 00037 namespace Foam 00038 { 00039 00040 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * // 00041 00042 inline void arrow2D::createHead(const scalar headratio) 00043 { 00044 scalar headwidth(0.5); 00045 point2D back(headratio*(tail-head)); 00046 00047 point2D norm(-headwidth*back.y(), headwidth*back.x()); 00048 00049 head1 = head + back + norm; 00050 head2 = head + back - norm; 00051 } 00052 00053 00054 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // 00055 00056 // Construct from components 00057 inline arrow2D::arrow2D 00058 ( 00059 const point2D t, 00060 const point2D h, 00061 const scalar lengthratio, 00062 const scalar headratio 00063 ) 00064 : 00065 tail(t), 00066 head(t+lengthratio*h), 00067 head1(0.0,0.0), 00068 head2(0.0,0.0) 00069 { 00070 createHead(headratio); 00071 } 00072 00073 00074 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * // 00075 00076 inline const point2D& arrow2D::Head() const 00077 { 00078 return head; 00079 } 00080 00081 inline const point2D& arrow2D::Tail() const 00082 { 00083 return tail; 00084 } 00085 00086 inline const point2D& arrow2D::Head1() const 00087 { 00088 return head1; 00089 } 00090 00091 inline const point2D& arrow2D::Head2() const 00092 { 00093 return head2; 00094 } 00095 00096 00097 // * * * * * * * * * * * * * * * Member Operators * * * * * * * * * * * * * // 00098 00099 inline void arrow2D::operator=(const arrow2D& a) 00100 { 00101 tail = a.tail; 00102 head = a.head; 00103 head1 = a.head1; 00104 head2 = a.head2; 00105 } 00106 00107 00108 // * * * * * * * * * * * * * * * Friend Operators * * * * * * * * * * * * * // 00109 00110 inline Gstream& operator<<(Gstream& gs, arrow2D& a) 00111 { 00112 a.draw(gs); 00113 return gs; 00114 } 00115 00116 00117 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00118 00119 } // End namespace Foam 00120 00121 // ************************************************************************* //