coal/broadphase/detail/interval_tree.h

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#ifndef COAL_INTERVAL_TREE_H
#define COAL_INTERVAL_TREE_H
 
#include <deque>
#include <limits>
#include <cstdlib>
 
#include "coal/broadphase/detail/interval_tree_node.h"
 
namespace coal {
namespace detail {
 
struct COAL_DLLAPI it_recursion_node {
 public:
  IntervalTreeNode* start_node;
 
  unsigned int parent_index;
 
  bool try_right_branch;
};
 
class COAL_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(CoalScalar low, CoalScalar high);
 
 protected:
  IntervalTreeNode* root;
 
  IntervalTreeNode* invalid_node;
 
  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 coal
 
#endif