Noise Generation Functions

Detailed Description

Functions to generate noise.

16-Bit Scaled Noise Functions
uint16_t	inoise16 (uint32_t x, uint32_t y, uint32_t z)
	16-bit, fixed point implementation of Perlin's noise.
uint16_t	inoise16 (uint32_t x, uint32_t y)
	16-bit, fixed point implementation of Perlin's noise.
uint16_t	inoise16 (uint32_t x)
	16-bit, fixed point implementation of Perlin's noise.

16-Bit Raw Noise Functions
int16_t	inoise16_raw (uint32_t x, uint32_t y, uint32_t z)
	16-bit, fixed point implementation of Perlin's noise without scaling.
int16_t	inoise16_raw (uint32_t x, uint32_t y)
	16-bit, fixed point implementation of Perlin's noise without scaling.
int16_t	inoise16_raw (uint32_t x)
	16-bit, fixed point implementation of Perlin's noise without scaling.

8-Bit Scaled Noise Functions
uint8_t	inoise8 (uint16_t x, uint16_t y, uint16_t z)
	8-Bit, fixed point implementation of Perlin's noise.
uint8_t	inoise8 (uint16_t x, uint16_t y)
	8-Bit, fixed point implementation of Perlin's noise.
uint8_t	inoise8 (uint16_t x)
	8-Bit, fixed point implementation of Perlin's noise.

8-Bit Raw Noise Functions
int8_t	inoise8_raw (uint16_t x, uint16_t y, uint16_t z)
	8-bit, fixed point implementation of Perlin's noise without scaling.
int8_t	inoise8_raw (uint16_t x, uint16_t y)
	8-bit, fixed point implementation of Perlin's noise without scaling.
int8_t	inoise8_raw (uint16_t x)
	8-bit, fixed point implementation of Perlin's noise without scaling.

32-Bit Simplex Noise Functions
uint16_t	snoise16 (uint32_t x)
	32 bit, fixed point implementation of simplex noise functions.
uint16_t	snoise16 (uint32_t x, uint32_t y)
uint16_t	snoise16 (uint32_t x, uint32_t y, uint32_t z)
uint16_t	snoise16 (uint32_t x, uint32_t y, uint32_t z, uint32_t w)

Function Documentation

inoise16() [1/3]

uint16_t inoise16 ( uint32_t x )

extern

16-bit, fixed point implementation of Perlin's noise.

See also

inoise16_raw()

Returns

scaled noise value as an unsigned integer, 0-65535

Parameters

x	x-axis coordinate on noise map (1D)

Definition at line 467 of file noise.cpp.

inoise16() [2/3]

uint16_t inoise16 ( uint32_t x, uint32_t y )

extern

16-bit, fixed point implementation of Perlin's noise.

See also

inoise16_raw()

Returns

scaled noise value as an unsigned integer, 0-65535

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)

Definition at line 427 of file noise.cpp.

inoise16() [3/3]

uint16_t inoise16 ( uint32_t x, uint32_t y, uint32_t z )

extern

16-bit, fixed point implementation of Perlin's noise.

See also

inoise16_raw()

Returns

scaled noise value as an unsigned integer, 0-65535

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)
z	z-axis coordinate on noise map (3D)

Definition at line 378 of file noise.cpp.

inoise16_raw() [1/3]

int16_t inoise16_raw ( uint32_t x )

extern

16-bit, fixed point implementation of Perlin's noise without scaling.

Coordinates are 16.16 fixed point values, 32 bit integers with integral coordinates in the high 16-bits and fractional in the low 16-bits.

Returns

unscaled noise value as a signed integer, roughly -18k to 18k

Parameters

x	x-axis coordinate on noise map (1D)

Definition at line 442 of file noise.cpp.

inoise16_raw() [2/3]

int16_t inoise16_raw ( uint32_t x, uint32_t y )

extern

16-bit, fixed point implementation of Perlin's noise without scaling.

Coordinates are 16.16 fixed point values, 32 bit integers with integral coordinates in the high 16-bits and fractional in the low 16-bits.

Returns

unscaled noise value as a signed integer, roughly -18k to 18k

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)

Definition at line 394 of file noise.cpp.

inoise16_raw() [3/3]

int16_t inoise16_raw ( uint32_t x, uint32_t y, uint32_t z )

extern

16-bit, fixed point implementation of Perlin's noise without scaling.

Coordinates are 16.16 fixed point values, 32 bit integers with integral coordinates in the high 16-bits and fractional in the low 16-bits.

Returns

unscaled noise value as a signed integer, roughly -18k to 18k

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)
z	z-axis coordinate on noise map (3D)

Definition at line 335 of file noise.cpp.

inoise8() [1/3]

uint8_t inoise8 ( uint16_t x )

extern

8-Bit, fixed point implementation of Perlin's noise.

See also

inoise8_raw()

Returns

scaled noise value as an unsigned integer, 0-255

Parameters

x	x-axis coordinate on noise map (1D)

Definition at line 590 of file noise.cpp.

inoise8() [2/3]

uint8_t inoise8 ( uint16_t x, uint16_t y )

extern

8-Bit, fixed point implementation of Perlin's noise.

See also

inoise8_raw()

Returns

scaled noise value as an unsigned integer, 0-255

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)

Definition at line 556 of file noise.cpp.

inoise8() [3/3]

uint8_t inoise8 ( uint16_t x, uint16_t y, uint16_t z )

extern

8-Bit, fixed point implementation of Perlin's noise.

See also

inoise8_raw()

Returns

scaled noise value as an unsigned integer, 0-255

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)
z	z-axis coordinate on noise map (3D)

Definition at line 512 of file noise.cpp.

inoise8_raw() [1/3]

int8_t inoise8_raw ( uint16_t x )

extern

8-bit, fixed point implementation of Perlin's noise without scaling.

Coordinates are 8.8 fixed point values, 16-bit integers with integral coordinates in the high 8-bits and fractional in the low 8-bits.

Returns

unscaled noise value as a signed integer, roughly -70 to 70

Parameters

x	x-axis coordinate on noise map (1D)

Definition at line 565 of file noise.cpp.

inoise8_raw() [2/3]

int8_t inoise8_raw ( uint16_t x, uint16_t y )

extern

8-bit, fixed point implementation of Perlin's noise without scaling.

Coordinates are 8.8 fixed point values, 16-bit integers with integral coordinates in the high 8-bits and fractional in the low 8-bits.

Returns

unscaled noise value as a signed integer, roughly -70 to 70

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)

Definition at line 520 of file noise.cpp.

inoise8_raw() [3/3]

int8_t inoise8_raw ( uint16_t x, uint16_t y, uint16_t z )

extern

8-bit, fixed point implementation of Perlin's noise without scaling.

Coordinates are 8.8 fixed point values, 16-bit integers with integral coordinates in the high 8-bits and fractional in the low 8-bits.

Returns

unscaled noise value as a signed integer, roughly -70 to 70

Parameters

x	x-axis coordinate on noise map (1D)
y	y-axis coordinate on noise map (2D)
z	z-axis coordinate on noise map (3D)

Definition at line 471 of file noise.cpp.

snoise16() [1/4]

uint16_t snoise16

(

uint32_t

x

)

32 bit, fixed point implementation of simplex noise functions.

The inputs are 20.12 fixed-point value. The result covers the full range of a uint16_t averaging around 32768.

Definition at line 102 of file simplex.cpp.

snoise16() [2/4]

uint16_t snoise16	(	uint32_t	x,
		uint32_t	y )

Definition at line 125 of file simplex.cpp.

snoise16() [3/4]

uint16_t snoise16	(	uint32_t	x,
		uint32_t	y,
		uint32_t	z )

Definition at line 192 of file simplex.cpp.

snoise16() [4/4]

uint16_t snoise16	(	uint32_t	x,
		uint32_t	y,
		uint32_t	z,
		uint32_t	w )

Definition at line 324 of file simplex.cpp.