#ifndef _SamplingPreprocessor_H__
#define _SamplingPreprocessor_H__

#include "Preprocessor.h"


/** Sampling based visibility preprocessing. The implementation is based on heuristical
    sampling of view space */
class SamplingPreprocessor : public Preprocessor {
public:
  int mSamplesPerPass;
  int mTotalSamples;
  int mKdPvsDepth;
  
  SamplingPreprocessor();

  virtual bool ComputeVisibility();

  void
  SetupRay(Ray &ray, const Vector3 &point, const Vector3 &direction);

  KdNode *
  GetNodeForPvs(KdLeaf *leaf);

  int
  AddNodeSamples(Intersectable *object, const Ray &ray, const int pass);

  void
  HoleSamplingPass();

};



#endif