interval_tree.h

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#ifndef HPP_FCL_INTERVAL_TREE_H
#define HPP_FCL_INTERVAL_TREE_H

#include <deque>
#include <limits>
#include <cstdlib>

#include "hpp/fcl/broadphase/detail/interval_tree_node.h"

namespace hpp {
namespace fcl {
namespace detail {

struct HPP_FCL_DLLAPI it_recursion_node {
 public:
  IntervalTreeNode* start_node;

  unsigned int parent_index;

  bool try_right_branch;
};

class HPP_FCL_DLLAPI IntervalTree {
 public:
  IntervalTree();

  ~IntervalTree();

  void print() const;

  SimpleInterval* deleteNode(IntervalTreeNode* node);

  void deleteNode(SimpleInterval* ivl);

  IntervalTreeNode* insert(SimpleInterval* new_interval);

  IntervalTreeNode* getPredecessor(IntervalTreeNode* node) const;

  IntervalTreeNode* getSuccessor(IntervalTreeNode* node) const;

  std::deque<SimpleInterval*> query(FCL_REAL low, FCL_REAL high);

 protected:
  IntervalTreeNode* root;

  IntervalTreeNode* nil;

  void leftRotate(IntervalTreeNode* node);

  void rightRotate(IntervalTreeNode* node);

  void recursiveInsert(IntervalTreeNode* node);

  void recursivePrint(IntervalTreeNode* node) const;

  IntervalTreeNode* recursiveSearch(IntervalTreeNode* node,
                                    SimpleInterval* ivl) const;

  void fixupMaxHigh(IntervalTreeNode* node);

  void deleteFixup(IntervalTreeNode* node);

 private:
  unsigned int recursion_node_stack_size;
  it_recursion_node* recursion_node_stack;
  unsigned int current_parent;
  unsigned int recursion_node_stack_top;
};

}  // namespace detail
}  // namespace fcl
}  // namespace hpp

#endif