#ifndef __LIGHTING_IMAGE_H__
#define __LIGHTING_IMAGE_H__

#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>


extern GimpDrawable *input_drawable;
extern GimpDrawable *output_drawable;
extern GeglBuffer   *source_buffer;
extern GeglBuffer   *dest_buffer;

extern GimpDrawable *bump_drawable;
extern GeglBuffer   *bump_buffer;
extern const Babl   *bump_format;

extern GimpDrawable *env_drawable;
extern GeglBuffer   *env_buffer;

extern guchar          *preview_rgb_data;
extern gint             preview_rgb_stride;
extern cairo_surface_t *preview_surface;

extern glong   maxcounter;
extern gint    width,height,env_width,env_height;
extern gdouble background[4];

extern gint   border_x1, border_y1, border_x2, border_y2;

extern guchar sinemap[256], spheremap[256], logmap[256];


guchar         peek_map        (GeglBuffer   *buffer,
                                const Babl   *format,
                                gint          x,
                                gint          y);
void           peek            (gint          x,
                                gint          y,
                                gdouble      *color);
void           peek_env_map    (gint          x,
                                gint          y,
                                gdouble      *color);
void           poke            (gint          x,
                                gint          y,
                                gdouble      *color);
gint           check_bounds    (gint          x,
                                gint          y);
GimpVector3    int_to_pos      (gint          x,
                                gint          y);
GimpVector3    int_to_posf     (gdouble       x,
                                gdouble       y);
void           pos_to_int      (gdouble       x,
                                gdouble       y,
                                gint         *scr_x,
                                gint         *scr_y);
void           pos_to_float    (gdouble       x,
                                gdouble       y,
                                gdouble      *xf,
                                gdouble      *yf);
void           get_image_color (gdouble       u,
                                gdouble       v,
                                gint         *inside,
                                gdouble      *color);
gdouble        get_map_value   (GeglBuffer   *buffer,
                                const Babl   *format,
                                gdouble       u,
                                gdouble       v,
                                gint         *inside);
gint           image_setup     (GimpDrawable *drawable,
                                gint          interactive);
void           bumpmap_setup   (GimpDrawable *bumpmap);
void           envmap_setup    (GimpDrawable *envmap);


#endif  /* __LIGHTING_IMAGE_H__ */