colormap.hpp
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1 
5 /* Copyright (c) 2005-2011 Taneli Kalvas. All rights reserved.
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8  * of the GNU General Public License as published by the Free Software
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42 
43 #ifndef COLORMAP_HPP
44 #define COLORMAP_HPP 1
45 
46 
47 #include <cairo.h>
48 #include <vector>
49 #include "palette.hpp"
50 #include "graph.hpp"
51 #include "coordmapper.hpp"
52 #include "interpolation.hpp"
53 
54 
55 
60 };
61 
62 
63 enum zscale_e {
67 };
68 
69 
74 class Colormap : public Graph {
75 
76  Palette _palette;
78  interpolation_e _interpolation;
79  zscale_e _zscale;
81  double _zmin;
82  double _zmax;
84  double _datarange[4];
85  size_t _n;
86  size_t _m;
88  std::vector<double> _f;
90  Interpolation2D *_intrp;
92  void make_data_interpolation( void );
93 
94  void plot_to_image_surface( cairo_surface_t *surface, const Coordmapper *cm, int plim[4] );
95 
96 public:
97 
100  Colormap();
101 
104  Colormap( const Colormap &colormap );
105 
113  Colormap( const double datarange[4], size_t n, size_t m,
114  const std::vector<double> &data );
115 
118  virtual ~Colormap();
119 
129  void set_data( const double datarange[4], size_t n, size_t m,
130  const std::vector<double> &data );
131 
137  void set_interpolation( interpolation_e interpolation );
138 
153  void set_zscale( zscale_e zscale );
154 
164  virtual void plot( cairo_t *cairo, const Coordmapper *cm, const double range[4] );
165 
170  virtual void plot_sample( cairo_t *cairo, double x, double y, double width, double height );
171 
177  virtual void get_bbox( double bbox[4] );
178 
181  void set_palette( const Palette &palette );
182 
185  Palette &palette( void ) { return( _palette ); }
186 
189  void get_zrange( double &min, double &max ) const;
190 
196  void set_zrange( double min, double max );
197 
200  double get_value( double x, double y ) const;
201 };
202 
203 
204 #endif