+ static SGVec3f min_light;
+ static float streak_bright_nearmost_layer,
+ streak_bright_farmost_layer,
+ streak_period_max,
+ streak_period_change_per_kt,
+ streak_period_min,
+ streak_length_min,
+ streak_length_change_per_kt,
+ streak_length_max;
+ static int streak_count_min, streak_count_max;
+ static float cone_base_radius,
+ cone_height;