class stAVCamera
{
 public:
  virtual void getConfig(stConfigR2S  &outConfig) const = 0;
  virtual void setConfig(const stConfigR2S  &inConfig)  = 0;

  virtual void visibilityPolygon(list<segment>  lstSeg, 
				 list<segment> &lstVisSeg,
				 list<segment> &lstVisGapSeg,
				 list<point> &lstVisPolyPt,
				 float minLength = 0.5)const  =0;
  virtual char * className() = 0;
  virtual char * clippingType() = 0;

  

  
  
};