colormap.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 COLORMAP_HPP
00044 #define COLORMAP_HPP 1
00045 
00046 
00047 #include <cairo.h>
00048 #include <vector>
00049 #include "palette.hpp"
00050 #include "graph.hpp"
00051 #include "coordmapper.hpp"
00052 #include "interpolation.hpp"
00053 
00054 
00055 
00056 enum interpolation_e {
00057     INTERPOLATION_CLOSEST = 0,
00058     INTERPOLATION_BILINEAR,
00059     INTERPOLATION_BICUBIC
00060 };
00061 
00062 
00063 enum zscale_e {
00064     ZSCALE_LINEAR = 0,
00065     ZSCALE_LOG,
00066     ZSCALE_RELLOG
00067 };
00068 
00069 
00074 class Colormap : public Graph {
00075 
00076     Palette                _palette;       
00078     interpolation_e        _interpolation; 
00079     zscale_e               _zscale;        
00081     double                 _zmin;          
00082     double                 _zmax;          
00084     double                 _datarange[4];  
00085     size_t                 _n;             
00086     size_t                 _m;             
00088     std::vector<double>    _f;             
00090     Interpolation2D       *_intrp;         
00092     void make_data_interpolation( void );
00093 
00094 public:
00095 
00098     Colormap();
00099 
00107     Colormap( const double datarange[4], size_t n, size_t m, 
00108               const std::vector<double> &data );
00109 
00112     virtual ~Colormap();
00113 
00116     void set_interpolation( interpolation_e interpolation );
00117 
00120     void set_zscale( zscale_e zscale );
00121 
00128     virtual void plot( cairo_t *cairo, const Coordmapper *cm, const double range[4] );
00129 
00135     virtual void get_bbox( double bbox[4] );
00136 
00139     void set_palette( const Palette &palette );
00140 
00143     void get_zrange( double &min, double &max ) const;
00144 
00147     double get_value( double x, double y ) const;
00148 };
00149 
00150 
00151 #endif
00152 
00153 
00154 
00155 
00156 

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