G3D::Noise Class Reference

3D fixed point Perlin noise generator. More...

Public Member Functions
	Noise ()
	Not threadsafe.
int	sample (int x, int y, int z)
	Returns numbers between -2^16 and 2^16.
float	sampleFloat (int x, int y, int z)
	Returns numbers on the range [-1, 1].
uint8	sampleUint8 (int x, int y, int z)
	Returns numbers on the range [0, 255].

Static Public Member Functions
static Noise &	common ()

Detailed Description

3D fixed point Perlin noise generator.

Ported from Ken Perlin's Java INoise implementation.

Referenced Code:

Copyright 2002 Ken Perlin

Referenced Code:

http://mrl.nyu.edu/~perlin/noise/ FIXED POINT VERSION OF IMPROVED NOISE: 1.0 IS REPRESENTED BY 2^16

Example:

Noise n;
GImage im(256, 256, 1);
for (int y = 0; y < im.height(); ++y) {
    for (int x = 0; x < im.width(); ++x) {
        im.pixel1(x, y) = Color1unorm8(n.sampleUint8(x << 12, y << 12, 0));
    }
}
im.save("noise.png");

See Also

G3D::Random

Constructor & Destructor Documentation

G3D::Noise::Noise ( )

inline

Not threadsafe.

Member Function Documentation

static Noise& G3D::Noise::common ( )

static

int G3D::Noise::sample ( int  x, int  y, int  z  )

inline

Returns numbers between -2^16 and 2^16.

Arguments should be on the order of 2^16

Threadsafe.

Referenced by sampleFloat(), and sampleUint8().

float G3D::Noise::sampleFloat ( int  x, int  y, int  z  )

inline

Returns numbers on the range [-1, 1].

Arguments should be on the order of 2^16

Threadsafe.

uint8 G3D::Noise::sampleUint8 ( int  x, int  y, int  z  )

inline

Returns numbers on the range [0, 255].

Arguments should be on the order of 2^16

Threadsafe.