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Image.h

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/*************************************************************************
 *
 * Source code for Real Time Image Library (libRTImage) 
 *
 * Leeds Vision Group give permission for this code to be copied, modified 
 * and distributed within the University of Leeds subject to the following
 * conditions:-
 *
 * - The code is not to be used for commercial gain.
 * - The code and use thereof will be attributed to the authors where
 *   appropriate (including demonstrations which rely on it's use).
 * - All modified, distributions of the source files will retain this header.
 *
 ****************************************************************************/

#ifndef IMAGE_H
#define IMAGE_H

#include "ImageRGB.h"
#include "ImageGrey.h"

/* Define Coefficients for RGB to Brightness relationship */
#define RED_COEF .2989961801
#define GREEN_COEF .5869947588
#define BLUE_COEF .1139912943

class Image : public ImageRGB, public ImageGrey
{
public:
        enum Type { COLOUR, GREYSCALE };

public:
/* Public Methods */

        Image(Image&);          
        
        Image(unsigned int width, unsigned int height);

        ~Image();

        void            set_rgb(unsigned int x, unsigned int y, 
                                PixelRGB& p);

        void            set_brightness(unsigned int x, unsigned int y,
                                       PixelGrey& level);
                                                        
        void            get_rgb(unsigned int x, unsigned int y, 
                                PixelRGB& p);

        void            get_brightness( unsigned int x, unsigned int y,
                                        PixelGrey& p);
        
        Image&          clear_rgb(int = 0);

        Image&          clear_rgb(PixelRGB&);

        Image&          clear_brightness(int = 0);

        Image&          copy(Image& img);
        
        /* Operator overloading */

        Image&          operator = (Image& img);

        void            update_brightness(); 

        bool            draw_line(int x_start, int y_start,
                                  int x_end, int y_end,
                                  PixelGrey intensity);
        bool            draw_line(int x_start, int y_start,
                                  int x_end, int y_end,
                                  PixelRGB pix);
        bool            draw_filled_circle(unsigned int centre_x,
                                           unsigned int centre_y,
                                           unsigned int radius,
                                           PixelGrey intensity);
        bool            draw_filled_circle(unsigned int centre_x,
                                           unsigned int centre_y,
                                           unsigned int radius,
                                           PixelRGB pix);
};

#endif  // IMAGE_H

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