#ifndef NEBULUS_H

#include <glib.h>
#include <math.h>
#include <stdlib.h>
#include "SDL_opengl.h"
#ifdef HAVE_LIBSDL_TTF
#include "SDL_ttf.h"
#endif

#ifndef PI
#define PI 3.14159265358979323846
#endif
#define PI2 6.28318530717958647692
#define NUM_BANDS 16
#define BEAT_MAX 100
#define T_AVERAGE_SPECTRAL 100
#define FRAME_AVG 30
#define FRAME_BASE 50
#define EFFECT_NUMBER 9
#define SIZE_GLTHREADS 256
#define SIZE_PARTICULE 64 
#define PARTICULE_COUNT 768 
#define _(String) gettext (String)

typedef struct nebulus {
  GLint WIDTH;
  GLint HEIGHT;
  GLuint effect;
  GLuint old_effect;
  GLint beat;
  GLint old_beat;
  GLint max_fps;
  GLint old_max_fps;
  GLint infos;
  GLfloat energy;
  gboolean paused;
  gboolean fullscreen;
  gboolean mouse;
  gboolean finished;
  gboolean in_thread;
  gboolean init;
  gboolean changement;
  gboolean freeze;
  gboolean config_load;
  gboolean active_mutex;
} nebulus;

typedef struct
{
  char *name;
  int value;
} effect;

typedef struct {
  unsigned int   width;
  unsigned int   height;
  unsigned int   bytes_per_pixel; /* 3:RGB, 4:RGBA */
  unsigned char  pixel_data[64 * 64 * 3 + 1];
} image_s64;

typedef struct {
  unsigned int 	 width;
  unsigned int 	 height;
  unsigned int 	 bytes_per_pixel; /* 3:RGB, 4:RGBA */ 
  unsigned char	 pixel_data[128 * 128 * 3 + 1];
} image_s128;

typedef struct
{
  GLfloat x, y, z;
} glcoord;

typedef struct
{
  long double currentAge;
  int maximumAge;
  int ageRangeMinimum;
  int ageRangeMaximum;
  glcoord position;
  glcoord velocity;
  glcoord impulse;
  glcoord color;
  glcoord *target_position;
  glcoord *target_velocity;
  glcoord *target_impulse;
} particle;

#ifdef HAVE_LIBSDL_TTF
typedef struct {
  char *title;
  int pos, size;
  gboolean title_refresh;
  TTF_Font *font;
  TTF_Font *fps;
} ttf_font;
#endif


extern nebulus general;
extern nebulus *point_general;
extern effect my_effect[EFFECT_NUMBER];
extern effect my_effect_old[EFFECT_NUMBER];
extern image_s64 background_image;
extern image_s128 tunnel_image;
extern image_s64 tentacle_image;
extern image_s128 twist_image;
extern image_s128 child_image;
extern image_s128 energy_image;
extern GLfloat scale, heights[16][16];
extern gint16 pcm_data[512];
extern float framerate;
extern gboolean face_first, tentacles_first, child_first, tunnel_first;
extern gboolean glthreads_first;
extern gboolean create_knot, create_quadratic;
extern GLuint blurtexture, knotbg, tunnel, tentacle, twist, twistbg;
extern GLuint texchild, childbg, energy, glthreads, particule;
extern GLuint facedl, cubedl, childdl;
extern GLint *blur_data[128*128*4];
extern GLUquadricObj *myquadratic;
extern unsigned char buffer_glthreads[SIZE_GLTHREADS * SIZE_GLTHREADS * 3];
extern unsigned char buffer_particule[SIZE_PARTICULE * SIZE_PARTICULE * 3];
extern GLfloat y_angle, y_speed, y_old_speed;
extern GLfloat x_angle, x_speed;
extern GLfloat z_angle, z_speed;
extern GLfloat yk_angle, yk_speed, yk_old_speed;
extern GLfloat xk_angle, xk_speed;
extern GLfloat zk_angle, zk_speed;
extern GLfloat speed_bg, old_speed_bg;
extern GLfloat elapsed_time, last_time;
extern char section_name[];

extern void nebulus_config(void);
extern void init_gl(void);
extern void draw_scene(void);
extern void drawblur(GLfloat times, GLfloat inc, GLfloat spost);
extern void draw_knot(void);
extern void draw_spectrum(void);
extern void draw_face(void);
extern void draw_glthreads(void);
extern void draw_tunnel(void);
extern void draw_tentacles(void);
extern void draw_twist(void);
extern void draw_child(void);
extern void draw_energy(void);
extern GLfloat reduce_vsync(GLfloat rotate);
extern GLfloat reduce_vsync_inv(GLfloat rotate);
extern void draw_background(gint mode);
extern void precalculate_tunnel(void);
extern void precalculate_glthreads(void);
extern void recalc_perspective(void);
extern void viewortho(void);
extern void viewperspective(void);
extern gboolean gen_gl_texture(GLuint texture);
extern void use_gl_texture(GLuint texture);
extern void delete_gl_texture(GLuint texture);
extern void use_glthreads_texture(void);
extern void use_particule_texture(void);
extern void use_twist_texture(void);
extern void use_child_texture(void);
extern void use_energy_texture(void);
extern void use_tunnel_texture(void);
extern void use_background_texture(void);
extern void draw_background(gboolean mode);
extern void config_load(void);

#endif