31 lines
582 B
C++
31 lines
582 B
C++
#ifndef HILBERT_VALUE_HPP
|
|
#define HILBERT_VALUE_HPP
|
|
|
|
#include <cstdint>
|
|
|
|
namespace osrm
|
|
{
|
|
namespace util
|
|
{
|
|
|
|
// computes a 64 bit value that corresponds to the hilbert space filling curve
|
|
|
|
struct FixedPointCoordinate;
|
|
|
|
class HilbertCode
|
|
{
|
|
public:
|
|
uint64_t operator()(const FixedPointCoordinate ¤t_coordinate) const;
|
|
HilbertCode() {}
|
|
HilbertCode(const HilbertCode &) = delete;
|
|
|
|
private:
|
|
inline uint64_t BitInterleaving(const uint32_t a, const uint32_t b) const;
|
|
inline void TransposeCoordinate(uint32_t *X) const;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* HILBERT_VALUE_HPP */
|