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/** @author Jia Pan */

#ifndef FCL_TRAVERSAL_DISTANCERAVERSALNODEBASE_H
#define FCL_TRAVERSAL_DISTANCERAVERSALNODEBASE_H

#include "fcl/narrowphase/detail/traversal/traversal_node_base.h"
#include "fcl/narrowphase/distance_request.h"
#include "fcl/narrowphase/distance_result.h"

namespace fcl
{

namespace detail
{

/// @brief Node structure encoding the information required for distance traversal.
template <typename S>
class FCL_EXPORT DistanceTraversalNodeBase : public TraversalNodeBase<S>
{
public:
  DistanceTraversalNodeBase();

  virtual ~DistanceTraversalNodeBase();

  /// @brief BV test between b1 and b2
  virtual S BVTesting(int b1, int b2) const;

  /// @brief Leaf test between node b1 and b2, if they are both leafs
  virtual void leafTesting(int b1, int b2) const;

  /// @brief Check whether the traversal can stop
  virtual bool canStop(S c) const;

  /// @brief Whether store some statistics information during traversal
  void enableStatistics(bool enable);

  /// @brief request setting for distance
  DistanceRequest<S> request;

  /// @brief distance result kept during the traversal iteration
  DistanceResult<S>* result;

  /// @brief Whether stores statistics
  bool enable_statistics;
};

} // namespace detail
} // namespace fcl

#include "fcl/narrowphase/detail/traversal/distance/distance_traversal_node_base-inl.h"

#endif
