ATMOSPHE.H

#ifndef ATMOSPHERE_H 
#define ATMOSPHERE_H 
 
#ifndef ATMOSPHERE_EXTERN 
#define ATMOSPHERE_EXTERN extern 
#endif 
 
#include "Color.h" 
#include "Point.h" 
 
const int weather_max_name = 64; 
class Weather { 
 public: 
  Weather(); 
  Weather(const char *n, GLfloat fd, GLfloat fs = 1, Color fc = white,  
  Color s1 = blue, Color s2 = white, 
  GLfloat sb = 1, 
  GLenum ls = GL_LIGHT0, GLenum la = GL_LIGHT1); 
  ~Weather(); 
 
  Weather operator=(Weather a); 
 
  /* The sun position is used to determine how light / dark it is */ 
  void apply(Point sun); 
  void draw_sky(Point sun); 
 
  /* This is how much to blur shadows due to haze or fog */ 
  GLfloat shadow_blur(); 
 
  char name[weather_max_name]; 
 
  GLfloat fog_density; 
  Color fog_color; 
  /* Fog spread relates the height to the density of the fog -- 1.0 
   * leads to uniform fog */ 
  GLfloat fog_spread; 
 
  Color sky_top; 
  Color sky_bottom; 
 
  GLenum light_sun, light_ambient; 
  GLfloat sun_brightness; 
 
 private: 
}; 
const int nweathers = 4; 
extern Weather weathers[nweathers]; 
const int def_weather_index = 0; 
 
#undef ATMOSPHERE_EXTERN 
 
#endif