Hashing Class Reference

Hashing functions. More...

#include <noise.h>

Static Public Member Functions
static int	Integer (int, int, int)
	Fast integer hashing.
static unsigned int	Morton (unsigned int, unsigned int)
	Morton codes in the plane.
static unsigned int	Morton (unsigned int, unsigned int, unsigned int)
	Morton codes.
static int	Double (const double &, const double &, const double &)
	Fast hashing for points.
static int	Double (const double &, const double &)
	Fast hashing for points in the plane.
static int	Double (const Vector &)
	Fast and convenient hashing for vectors.
static int	Double (const Vector2 &)
	Fast and convenient hashing for vectors in the plane.

Detailed Description

Hashing functions.

A good reference to a variety of hashing functions: http://burtleburtle.net/bob/hash/integer.html

This class implements several simple and efficient hashing functions, which are used in the definition or some noise classes such as GaborNoise.

Member Function Documentation

Double() [1/4]

int Hashing::Double ( const double & x, const double & y )

inlinestatic

Fast hashing for points in the plane.

Parameters

x,y	Real coordinates.

Double() [2/4]

int Hashing::Double ( const double & x, const double & y, const double & z )

inlinestatic

Fast hashing for points.

Parameters

x,y,z

Real coordinates.

Double() [3/4]

int Hashing::Double ( const Vector & p )

static

Fast and convenient hashing for vectors.

See also

Hashing::Double(const double&, const double&, const double&)

Parameters

p

Point.

Double() [4/4]

int Hashing::Double ( const Vector2 & p )

static

Fast and convenient hashing for vectors in the plane.

Parameters

p

Point.

See also

Hashing::Double(const double&, const double&)

Integer()

int Hashing::Integer ( int x, int y, int z )

inlinestatic

Fast integer hashing.

Parameters

x,y,z

Integer coordinates.

Morton() [1/2]

unsigned int Hashing::Morton ( unsigned int x, unsigned int y )

static

Morton codes in the plane.

Parameters

x,y	Integer positive coordinates

Morton() [2/2]

unsigned int Hashing::Morton ( unsigned int x, unsigned int y, unsigned int z )

static

Morton codes.

Parameters

x,y,z

Integer positive coordinates