You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
#ifndef __octree_cursor
|
|
#define __octree_cursor
|
|
// Included by octree
|
|
|
|
/**\brief An octree cursor.
|
|
*
|
|
* Unlike an iterator, an octree cursor does not provide an order in which to traverse nodes.
|
|
* Instead, it provides 2 primitive operations: up() and down() that can be used to
|
|
* traverse the tree in any order.
|
|
* There are also some utility routines named over(), axis_partner(), and neighbor() that
|
|
* call up() followed by down() with specific arguments to help traverse nodes that are
|
|
* children of the same parent.
|
|
*
|
|
* A cursor contains no storage beyond its base class, octree_path, so you may assign to a
|
|
* cursor from any descendant of octree_path including octree_iterator.
|
|
*/
|
|
template <typename T_, typename R_, typename P_, typename O_, typename OP_, int d_ = 3>
|
|
class octree_cursor : public octree_path<T_, R_, P_, O_, OP_, d_>
|
|
{
|
|
public:
|
|
typedef O_ octree_type;
|
|
typedef OP_ octree_pointer;
|
|
typedef typename O_::allocator_type octree_allocator_type;
|
|
typedef typename O_::octree_node_reference octree_node_reference;
|
|
typedef typename O_::octree_node_pointer octree_node_pointer;
|
|
|
|
typedef octree_path<T_, T_&, T_*, O_, O_*, d_> path;
|
|
typedef octree_path<T_, const T_&, const T_*, O_, const O_*, d_> const_path;
|
|
typedef octree_path<T_, R_, P_, O_, OP_, d_> self_path;
|
|
|
|
typedef octree_cursor<T_, T_&, T_*, O_, O_*, d_> cursor;
|
|
typedef octree_cursor<T_, const T_&, const T_*, O_, const O_*, d_> const_cursor;
|
|
typedef octree_cursor<T_, R_, P_, O_, OP_, d_> self_cursor;
|
|
|
|
octree_cursor();
|
|
octree_cursor(octree_pointer otree);
|
|
octree_cursor(octree_node_pointer oroot);
|
|
octree_cursor(const const_path& src);
|
|
|
|
void up();
|
|
void down(int child_of_this_node);
|
|
|
|
int where() const;
|
|
|
|
void over(int child_of_shared_parent);
|
|
void axis_partner(int axis);
|
|
bool axis_bit(int axis) const;
|
|
|
|
bool visit(const std::vector<int>& path);
|
|
|
|
self_path& operator=(const path& it);
|
|
self_path& operator=(const const_path& it);
|
|
};
|
|
|
|
#endif // __octree_cursor
|