Ridged-simplex-turbulence's multifractal terrain model. More...

#include <analyticfield.h>

Inheritance diagram for AnalyticRidged:

Public Member Functions
	AnalyticRidged (const double &, const double &, const double &, const double &, const double &, int, const Vector2 &=Vector::Null)
	Create the fractal terrain.

double	Value (const Vector2 &) const
	Compute the field function.

Public Member Functions inherited from AnalyticHeightField
	AnalyticHeightField ()
	Empty.

virtual double	Height (const Vector2 &) const
	Compute elevation at a given point.

virtual Vector	Normal (const Vector2 &) const
	Compute the normal to the field.

HeightField	CreateHeightField (const Box2 &, int, int) const
	Create a HeightField given an input domain.

double	Slope (const Vector2 &) const
	Compute the slope at a given point.

double	AverageSlope (const Vector2 &, int=8) const
	Compute the average slope at a given point.

double	Slope (const Vector2 &, const Vector2 &) const
	Compute the slope in a given direction and at a given point.

QVector< double >	Cross (const Vector2 &, const Vector2 &, int) const
	Compute the elevation along a segment.

Additional Inherited Members
Static Public Member Functions inherited from AnalyticHeightField
static double	Ridge (const double &, const double &=0.0)
	Ridge function.

Static Protected Attributes inherited from AnalyticHeightField
static double	Epsilon = 1e-6
	Epsilon value used for gradient computation.

Detailed Description

Ridged-simplex-turbulence's multifractal terrain model.

Constructor & Destructor Documentation

AnalyticRidged::AnalyticRidged	(	const double &	v,
		const double &	a,
		const double &	l,
		const double &	alpha,
		const double &	lambda,
		int	octaves,
		const Vector2 &	t = Vector::Null )

explicit

Create the fractal terrain.

Parameters

v,a,l	Base value, amplitude and wavelength.
alpha	Amplitude attenuation factor (~0.5, should be less than 1.0).
lambda	Wavelength attenuation factor (~0.5, should be less than 1.0).
octaves	Number of octaves.
t	Translation offset.

double AnalyticRidged::Value ( const Vector2 & q ) const

virtual

Compute the field function.

Parameters

q Point.