Procedural Generation

Procedural generation utilities. More...

Classes
class	gf::Heightmap
	A heightmap. More...
class	gf::Noise2D
	2D A noise function More...
class	gf::Noise3D
	3D A noise function More...
class	gf::ValueNoise2D
	Value 2D noise. More...
class	gf::GradientNoise2D
	Gradient 2D noise. More...
class	gf::GradientNoise3D
	Gradient 3D noise. More...
class	gf::BetterGradientNoise2D
	Better gradient 2D noise. More...
class	gf::FractalNoise2D
	Fractal 2D noise. More...
class	gf::FractalNoise3D
	Fractal 3D noise. More...
class	gf::PerlinNoise2D
	Perlin 2D noise. More...
class	gf::PerlinNoise3D
	Perlin 3D noise. More...
class	gf::SimplexNoise2D
	Simplex 2D noise. More...
class	gf::OpenSimplexNoise2D
	OpenSimplex 2D noise. More...
class	gf::OpenSimplexNoise3D
	OpenSimplex3D noise. More...
class	gf::WaveletNoise3D
	Wavelet 3D noise. More...
class	gf::WorleyNoise2D
	Worley 2D noise. More...
class	gf::Multifractal2D
	Multi Fractal 2D noise. More...
class	gf::HeteroTerrain2D
	Hetero Terrain 2D noise. More...
class	gf::HybridMultifractal2D
	Hybrid Multifractal 2D noise. More...
class	gf::RidgedMultifractal2D
	Ridged Multifractal 2D noise. More...
class	gf::Noise3DTo2DAdapter
	An adapter that make a 2D noise from a 3D noise. More...

Functions
GF_CORE_API std::vector< Vector2f >	gf::midpointDisplacement1D (Vector2f p0, Vector2f p1, Random &random, unsigned iterations, Vector2f direction, float initialFactor=1.0f, float reductionFactor=0.5f)
	1D midpoint displacement More...
GF_CORE_API std::vector< Vector2f >	gf::midpointDisplacement1D (Vector2f p0, Vector2f p1, Random &random, unsigned iterations, float initialFactor=1.0f, float reductionFactor=0.5f)
	1D midpoint displacement More...
GF_CORE_API Heightmap	gf::midpointDisplacement2D (Vector2i size, Random &random, Span< const double > initialValues=nullptr)
	2D midpoint displacement More...
GF_CORE_API Heightmap	gf::diamondSquare2D (Vector2i size, Random &random, Span< const double > initialValues=nullptr)
	2D diamond square More...

Detailed Description

Procedural generation utilities.

Function Documentation

diamondSquare2D()

GF_CORE_API Heightmap gf::diamondSquare2D	(	Vector2i	size,
		Random &	random,
		Span< const double >	initialValues = nullptr
	)

2D diamond square

The size can be anything. If the size is not a power of two plus one, then a greater heightmap is generated and a submap of the right size is returned (in the middle of the generated map).

The function takes initial values. If there are less than three values, only the first one is used to initialize the four corners. If there are more than four, only the first four are used to initialize the four corners in that order: north-west, north-east, south-east, south-west. If no values are given, the four corners are initialized to \( 0.0 \).

Parameters

size	The size of the map
random	A random engine
initialValues	The initial values of the four corners

See also

gf::midpointDisplacement2D()

midpointDisplacement1D() [1/2]

GF_CORE_API std::vector< Vector2f > gf::midpointDisplacement1D	(	Vector2f	p0,
		Vector2f	p1,
		Random &	random,
		unsigned	iterations,
		float	initialFactor = 1.0f,
		float	reductionFactor = 0.5f
	)

1D midpoint displacement

The direction is perpendicular to the segment \( [P_0 P_1] \)

Parameters

p0	The first end point
p1	The second end point
random	A random engine
iterations	The number of iterations
initialFactor	The initial factor to apply to the displacement
reductionFactor	The factor to apply at each iteration

midpointDisplacement1D() [2/2]

GF_CORE_API std::vector< Vector2f > gf::midpointDisplacement1D	(	Vector2f	p0,
		Vector2f	p1,
		Random &	random,
		unsigned	iterations,
		Vector2f	direction,
		float	initialFactor = 1.0f,
		float	reductionFactor = 0.5f
	)

1D midpoint displacement

Parameters

p0	The first end point
p1	The second end point
random	A random engine
iterations	The number of iterations
direction	The direction to make a displacement
initialFactor	The initial factor to apply to the displacement
reductionFactor	The factor to apply at each iteration

midpointDisplacement2D()

GF_CORE_API Heightmap gf::midpointDisplacement2D	(	Vector2i	size,
		Random &	random,
		Span< const double >	initialValues = nullptr
	)

2D midpoint displacement

The size can be anything. If the size is not a power of two plus one, then a greater heightmap is generated and a submap of the right size is returned (in the middle of the generated map).

The function takes initial values. If there are less than three values, only the first one is used to initialize the four corners. If there are more than four, only the first four are used to initialize the four corners in that order: north-west, north-east, south-east, south-west. If no values are given, the four corners are initialized to \( 0.0 \).

Parameters

size	The size of the map
random	A random engine
initialValues	The initial values of the four corners

See also

gf::diamondSquare2D()