noise.h File Reference

#include "irr_v3d.h"
#include "exceptions.h"
#include "util/string.h"

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Classes
class	PseudoRandom
class	PcgRandom
struct	NoiseParams
class	Noise

Macros
#define	NOISE_FLAG_DEFAULTS   0x01
#define	NOISE_FLAG_EASED   0x02
#define	NOISE_FLAG_ABSVALUE   0x04
#define	NOISE_FLAG_POINTBUFFER   0x08
#define	NOISE_FLAG_SIMPLEX   0x10

Functions
float	NoisePerlin2D (const NoiseParams *np, float x, float y, s32 seed)
float	NoisePerlin3D (const NoiseParams *np, float x, float y, float z, s32 seed)
float	NoisePerlin2D_PO (NoiseParams *np, float x, float xoff, float y, float yoff, s32 seed)
float	NoisePerlin3D_PO (NoiseParams *np, float x, float xoff, float y, float yoff, float z, float zoff, s32 seed)
float	noise2d (int x, int y, s32 seed)
float	noise3d (int x, int y, int z, s32 seed)
float	noise2d_gradient (float x, float y, s32 seed, bool eased=true)
float	noise3d_gradient (float x, float y, float z, s32 seed, bool eased=false)
float	noise2d_perlin (float x, float y, s32 seed, int octaves, float persistence, bool eased=true)
float	easeCurve (float t)
float	contour (float v)

Variables
FlagDesc	flagdesc_noiseparams []

Macro Definition Documentation

NOISE_FLAG_ABSVALUE

#define NOISE_FLAG_ABSVALUE   0x04

Referenced by NoisePerlin2D(), NoisePerlin3D(), and Noise::updateResults().

NOISE_FLAG_DEFAULTS

#define NOISE_FLAG_DEFAULTS   0x01

Referenced by Settings::getNoiseParamsFromGroup(), Noise::gradientMap2D(), NoisePerlin2D(), and read_noiseparams().

NOISE_FLAG_EASED

#define NOISE_FLAG_EASED   0x02

Referenced by Noise::gradientMap2D(), Noise::gradientMap3D(), NoisePerlin2D(), NoisePerlin3D(), and TestMapSettingsManager::testMapSettingsManager().

NOISE_FLAG_POINTBUFFER

#define NOISE_FLAG_POINTBUFFER   0x08

NOISE_FLAG_SIMPLEX

#define NOISE_FLAG_SIMPLEX   0x10

Function Documentation

contour()

float contour

(

float

v

)

Referenced by OreVein::generate(), and CavesNoiseIntersection::generateCaves().

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easeCurve()

float easeCurve ( float t )

inline

Referenced by biLinearInterpolation(), Sky::render(), triLinearInterpolation(), and Camera::update().

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noise2d()

float noise2d	(	int	x,
		int	y,
		s32	seed )

References NOISE_MAGIC_SEED, NOISE_MAGIC_X, NOISE_MAGIC_Y, x, and y.

Referenced by MapgenV6::getBiome(), Noise::gradientMap2D(), noise2d_gradient(), TestNoise::testNoise2dAtOriginWithZeroSeed(), TestNoise::testNoise2dWithFunPrimes(), TestNoise::testNoise2dWithMaxSeed(), TestNoise::testNoise3dAtOriginWithZeroSeed(), and TestNoise::testNoise3dWithFunPrimes().

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noise2d_gradient()

float noise2d_gradient	(	float	x,
		float	y,
		s32	seed,
		bool	eased = true )

References biLinearInterpolation(), myfloor, noise2d(), x, and y.

Referenced by noise2d_perlin(), and NoisePerlin2D().

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noise2d_perlin()

float noise2d_perlin	(	float	x,
		float	y,
		s32	seed,
		int	octaves,
		float	persistence,
		bool	eased = true )

References noise2d_gradient(), x, and y.

Referenced by Clouds::gridFilled().

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noise3d()

float noise3d	(	int	x,
		int	y,
		int	z,
		s32	seed )

References NOISE_MAGIC_SEED, NOISE_MAGIC_X, NOISE_MAGIC_Y, NOISE_MAGIC_Z, x, y, and z.

Referenced by Noise::gradientMap3D(), noise3d_gradient(), and TestNoise::testNoise3dWithMaxSeed().

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noise3d_gradient()

float noise3d_gradient	(	float	x,
		float	y,
		float	z,
		s32	seed,
		bool	eased = false )

References myfloor, noise3d(), triLinearInterpolation(), x, y, and z.

Referenced by NoisePerlin3D().

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NoisePerlin2D()

float NoisePerlin2D	(	const NoiseParams *	np,
		float	x,
		float	y,
		s32	seed )

References NoiseParams::flags, NoiseParams::lacunarity, noise2d_gradient(), NOISE_FLAG_ABSVALUE, NOISE_FLAG_DEFAULTS, NOISE_FLAG_EASED, NoiseParams::octaves, NoiseParams::offset, NoiseParams::persist, NoiseParams::scale, NoiseParams::seed, NoiseParams::spread, x, and y.

Referenced by MapgenV7::baseTerrainLevelAtPoint(), BiomeGenOriginal::calcHeatAtPoint(), BiomeGenOriginal::calcHumidityAtPoint(), MapgenV6::generateCaves(), MapgenV6::getHaveAppleTree(), MapgenV7::getMountainTerrainAtPoint(), MapgenCarpathian::getSpawnLevelAtPoint(), MapgenFlat::getSpawnLevelAtPoint(), MapgenFractal::getSpawnLevelAtPoint(), MapgenV5::getSpawnLevelAtPoint(), MapgenV7::getSpawnLevelAtPoint(), MapgenValleys::getSpawnLevelAtPoint(), MapgenV6::getTreeAmount(), LuaPerlinNoise::l_get_2d(), NoisePerlin2D_PO(), Decoration::placeDeco(), and TestNoise::testNoise2dPoint().

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NoisePerlin2D_PO()

float NoisePerlin2D_PO ( NoiseParams * np, float x, float xoff, float y, float yoff, s32 seed )

inline

References NoisePerlin2D(), NoiseParams::spread, x, and y.

Referenced by MapgenV6::baseTerrainLevelFromNoise().

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NoisePerlin3D()

float NoisePerlin3D	(	const NoiseParams *	np,
		float	x,
		float	y,
		float	z,
		s32	seed )

References NoiseParams::flags, NoiseParams::lacunarity, noise3d_gradient(), NOISE_FLAG_ABSVALUE, NOISE_FLAG_EASED, NoiseParams::octaves, NoiseParams::offset, NoiseParams::persist, NoiseParams::scale, NoiseParams::seed, NoiseParams::spread, x, y, and z.

Referenced by CavesRandomWalk::carveRoute(), DungeonGen::generate(), OreScatter::generate(), MapgenBasic::generateDungeons(), MapgenV7::getMountainTerrainAtPoint(), MapgenCarpathian::getSpawnLevelAtPoint(), MapgenV5::getSpawnLevelAtPoint(), MapgenValleys::getSpawnLevelAtPoint(), LuaPerlinNoise::l_get_3d(), MapgenV6::makeChunk(), NoisePerlin3D_PO(), and TestNoise::testNoise3dPoint().

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NoisePerlin3D_PO()

float NoisePerlin3D_PO ( NoiseParams * np, float x, float xoff, float y, float yoff, float z, float zoff, s32 seed )

inline

References NoisePerlin3D(), NoiseParams::spread, x, y, and z.

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Variable Documentation

flagdesc_noiseparams

FlagDesc flagdesc_noiseparams[]

extern

Referenced by Settings::getNoiseParamsFromGroup(), push_noiseparams(), read_noiseparams(), and Settings::setNoiseParams().