Ogre::Volume::SimplexNoise Class Reference

Simplex Noise ported from public domain Java Implementation http://webstaff.itn.liu.se/~stegu/simplexnoise/SimplexNoise.java Thanks Stefan Gustavson! More...

#include <OgreVolumeSimplexNoise.h>

Public Member Functions
	SimplexNoise (void)
	Constructor with a random permutation table. More...
	SimplexNoise (unsigned long definedSeed)
	Constructor with a by seed defined permutation table. More...
long	getSeed (void) const
	Gets the current seed. More...
Real	noise (Real xIn, Real yIn, Real zIn) const
	3D noise function. More...

Private Member Functions
Real	dot (const Vector3 &g, Real x, Real y, Real z) const
	Dot product of a gradient with the given values. More...
void	init (unsigned long definedSeed)
	Initializes the SimplexNoise instance. More...
unsigned long	random (void)

Private Attributes
long	mSeed
	Random seed. More...
short	perm [512]
	Permutation table. More...
short	permMod12 [512]
	Permutation table modulo 12. More...

Static Private Attributes
static Real	F3
	Skewing and unskewing factor for 3 dimensions. More...
static Real	G3
	Skewing and unskewing factor for 3 dimensions. More...

Detailed Description

Simplex Noise ported from public domain Java Implementation http://webstaff.itn.liu.se/~stegu/simplexnoise/SimplexNoise.java Thanks Stefan Gustavson!

Definition at line 42 of file OgreVolumeSimplexNoise.h.

Constructor & Destructor Documentation

Ogre::Volume::SimplexNoise::SimplexNoise

(

void

)

Constructor with a random permutation table.

Ogre::Volume::SimplexNoise::SimplexNoise

(

unsigned long

definedSeed

)

Constructor with a by seed defined permutation table.

Parameters

definedSeed

The seed to use.

Member Function Documentation

Real Ogre::Volume::SimplexNoise::dot ( const Vector3 &  g, Real  x, Real  y, Real  z  ) const

private

Dot product of a gradient with the given values.

Parameters

g	The gradient.
x	The first value.
y	The second value.
z	The third value.

Returns

The dot product.

Definition at line 79 of file OgreVolumeSimplexNoise.h.

References Ogre::Vector3::x, Ogre::Vector3::y, and Ogre::Vector3::z.

long Ogre::Volume::SimplexNoise::getSeed

(

void

)

const

Gets the current seed.

Returns

The current seed.

void Ogre::Volume::SimplexNoise::init ( unsigned long  definedSeed )

private

Initializes the SimplexNoise instance.

Real Ogre::Volume::SimplexNoise::noise	(	Real	xIn,
		Real	yIn,
		Real	zIn
	)		const

3D noise function.

Parameters

xIn	The first dimension parameter.
yIn	The second dimension parameter.
zIn	The third dimension parameter.

Returns

The noise value.

unsigned long Ogre::Volume::SimplexNoise::random ( void  )

private

Member Data Documentation

Real Ogre::Volume::SimplexNoise::F3

staticprivate

Skewing and unskewing factor for 3 dimensions.

Definition at line 47 of file OgreVolumeSimplexNoise.h.

Real Ogre::Volume::SimplexNoise::G3

staticprivate

Skewing and unskewing factor for 3 dimensions.

Definition at line 50 of file OgreVolumeSimplexNoise.h.

long Ogre::Volume::SimplexNoise::mSeed

private

Random seed.

Definition at line 53 of file OgreVolumeSimplexNoise.h.

short Ogre::Volume::SimplexNoise::perm[512]

private

Permutation table.

Definition at line 56 of file OgreVolumeSimplexNoise.h.

short Ogre::Volume::SimplexNoise::permMod12[512]

private

Permutation table modulo 12.

Definition at line 59 of file OgreVolumeSimplexNoise.h.

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The documentation for this class was generated from the following file:

• OgreVolumeSimplexNoise.h