Keyboard Input

void keyboard (unsigned char key, int x, int y)

{

 

   switch (key)

   {

      case 'd':

         day = (day + 10) % 360;

         glutPostRedisplay();

         break;

      case 'D':

         day = (day - 10) % 360;

         glutPostRedisplay();

         break;

      case 'y':

         year = (year + 5) % 360;

         glutPostRedisplay();

         break;

      case 'Y':

         year = (year - 5) % 360;

         glutPostRedisplay();

         break;

      case 27:

         exit(0);

         break;

      default:

         break;

   }

 

}