/* Fake a Flog.* namespace */
  if(typeof(Flog) == 'undefined') var Flog = {};
  if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
  
  Flog.RayTracer.Background = Class.create();
  
  Flog.RayTracer.Background.prototype = {
      color : null,
      ambience : 0.0,
      
      initialize : function(color, ambience) {
          this.color = color;
          this.ambience = ambience;
      }
  }