eqpotgraph.hpp

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00001 
00005 /* Copyright (c) 2005-2010 Taneli Kalvas. All rights reserved.
00006  *
00007  * You can redistribute this software and/or modify it under the terms
00008  * of the GNU General Public License as published by the Free Software
00009  * Foundation; either version 2 of the License, or (at your option)
00010  * any later version.
00011  * 
00012  * This library is distributed in the hope that it will be useful, but
00013  * WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00015  * General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with this library (file "COPYING" included in the package);
00019  * if not, write to the Free Software Foundation, Inc., 51 Franklin
00020  * Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  * 
00022  * If you have questions about your rights to use or distribute this
00023  * software, please contact Berkeley Lab's Technology Transfer
00024  * Department at TTD@lbl.gov. Other questions, comments and bug
00025  * reports should be sent directly to the author via email at
00026  * taneli.kalvas@jyu.fi.
00027  * 
00028  * NOTICE. This software was developed under partial funding from the
00029  * U.S.  Department of Energy.  As such, the U.S. Government has been
00030  * granted for itself and others acting on its behalf a paid-up,
00031  * nonexclusive, irrevocable, worldwide license in the Software to
00032  * reproduce, prepare derivative works, and perform publicly and
00033  * display publicly.  Beginning five (5) years after the date
00034  * permission to assert copyright is obtained from the U.S. Department
00035  * of Energy, and subject to any subsequent five (5) year renewals,
00036  * the U.S. Government is granted for itself and others acting on its
00037  * behalf a paid-up, nonexclusive, irrevocable, worldwide license in
00038  * the Software to reproduce, prepare derivative works, distribute
00039  * copies to the public, perform publicly and display publicly, and to
00040  * permit others to do so.
00041  */
00042 
00043 #ifndef EQPOTGRAPH_HPP
00044 #define EQPOTGRAPH_HPP 1
00045 
00046 
00047 #include <vector>
00048 #include "geometry.hpp"
00049 #include "scalarfield.hpp"
00050 #include "graph3d.hpp"
00051 #include "color.hpp"
00052 
00053 
00058 class EqPotGraph : public Graph3D {
00059 
00060     struct Line {
00061         double x[4];              /* Coordinates of line segment (x1,y1,x2,y2) */
00062         
00063         Line( double _x1, double _y1, double _x2, double _y2 ) { 
00064             x[0] = _x1; 
00065             x[1] = _y1;
00066             x[2] = _x2; 
00067             x[3] = _y2;
00068         }
00069 
00070         double &operator[]( int i ) { return( x[i] ); }
00071         const double &operator[]( int i ) const { return( x[i] ); }
00072     };
00073 
00074     struct EqPotLines {
00075         double            pot;    /* Potential value for equipotential line. */
00076         std::vector<Line> x;      /* Line segment coordinates. */
00077         
00078         EqPotLines( double pot ) : pot(pot) {}
00079     };
00080 
00081     Color                               _color;
00082     const ScalarField                   _epot;
00083     const Geometry                     &_g;
00084     bool                                _data_built;
00085 
00086     std::vector<double>                 _eqlines_manual;
00087     size_t                              _eqlines_auto;
00088     std::vector<EqPotLines *>           _lines;
00089 
00090     view_e                              _oview;
00091     double                              _olevel;
00092 
00093     bool                                _cache;
00094 
00095 
00096     bool eqline_exists( double pot1, signed char sol1, 
00097                         double pot2, signed char sol2, 
00098                         double pot ) const;
00099     void build_data( void );
00100 
00101 public:
00102 
00108     EqPotGraph( const ScalarField &epot, const Geometry &g );
00109 
00112     virtual ~EqPotGraph();
00113 
00118     void disable_cache( void );
00119 
00123     void set_eqlines_manual( const std::vector<double> &pot );
00124 
00128     void set_eqlines_auto( size_t N );
00129 
00136     virtual void plot( cairo_t *cairo, const Coordmapper *cm, const double range[4] );
00137 
00143     virtual void get_bbox( double bbox[4] );
00144 };
00145 
00146 
00147 #endif
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