Slope disc primitive with noise. More...

#include <archestree.h>

Inheritance diagram for Terra2013VertexSlopeNoise:

Public Member Functions
	Terra2013VertexSlopeNoise (const Vector &, const Vector &, const double &, const double &, const double &, const double &)
	Creation. More...

virtual ScalarAlpha	ElevationAlpha (const Vector2 &) const
	Compute the fields. More...

virtual int	Memory () const
	Compute the size of a node. More...

Public Member Functions inherited from TerraVertexSlope
	TerraVertexSlope (const Vector &, const Vector &, const double &, const double &=1.0)
	Create a disc primitive. More...

	TerraVertexSlope (const Vector &, const double &, const double &, const double &, const double &=1.0)
	Create a disc primitive. More...

Public Member Functions inherited from TerraVertex
	TerraVertex (const Vector &, const double &, const double &=1.0)
	Create a point primitive. More...

virtual void	Draw (QGraphicsScene &) const
	Renders the node into a QGraphicsScene. More...

Public Member Functions inherited from TerraSkeleton
	TerraSkeleton (const double &, const double &)
	Create a primitive with a radial falloff function. More...

double	Alpha (const double &) const
	Compute the falloff function. More...

Public Member Functions inherited from TerraPrimitive
	TerraPrimitive ()
	Create a primitive.

	~TerraPrimitive ()
	Recusively destroy the sub-trees.

int	Traversal (const Vector2 &) const
	Compute the number of nodes that are traversed when evaluating the tree. More...

Public Member Functions inherited from TerraNode
	TerraNode (const Box2 &=Box2::Infinity)
	Create a node. More...

virtual Box2	GetBox () const
	Returns the bouding box of a node.

virtual double	Elevation (const Vector2 &) const
	Compute the elevation at a given position. More...

virtual double	Alpha (const Vector2 &) const
	Compute the alpha mask at a given position. More...

virtual Vector2	Gradient (const Vector2 &) const
	Compute the gradient at a given position. More...

virtual Vector	Normal (const Vector2 &) const
	Compute the normal at a given position. More...

virtual void	writeJson (QJsonObject &)
	Compute the Json Document of the subtree.

ScalarField2	Sample (const Array2 &) const
	Create a discrete scalar field by sampling the elevation over a given domain. More...

ScalarField2	Alpha (const Array2 &) const
	Create a discrete scalar field by sampling the elevation over a given domain. More...

void	Blend (HeightField &) const
	Blend a given node with an existing terrain over an input heightfield. More...

void	Add (HeightField &) const
	Add a given node with an existing heightfield. More...

Protected Attributes
double	s
	Scaling of the noise.

double	na
	Amplitude of the noise.

Protected Attributes inherited from TerraVertexSlope
double	sy
	Slope along x and y directions.

Protected Attributes inherited from TerraVertex
Vector	c
	Center, includes elevation.

Protected Attributes inherited from TerraSkeleton
double	alpha
	Weight.

Protected Attributes inherited from TerraNode
Box2	box = Box2::Infinity
	Bounding box.

Additional Inherited Members
Static Protected Attributes inherited from TerraNode
static const double	epsilon = 1e-2
	Epsilon value for gradient computations.

Detailed Description

Slope disc primitive with noise.

Constructor & Destructor Documentation

◆ Terra2013VertexSlopeNoise()

Terra2013VertexSlopeNoise::Terra2013VertexSlopeNoise	(	const Vector &	p,
		const Vector &	q,
		const double &	r,
		const double &	a,
		const double &	sa,
		const double &	na
	)

Creation.

Parameters

p	Center.
q	?
r	Radius.
a	Amplitude weighting the alpha function.
na	Amplitude of the noise.
sa	Scaling of the noise.

References na, and s.

Referenced by Memory().

Member Function Documentation

◆ ElevationAlpha()

ScalarAlpha Terra2013VertexSlopeNoise::ElevationAlpha ( const Vector2 & p ) const

virtual

Compute the fields.

Parameters

p Point.

Reimplemented from TerraVertexSlope.

References TerraSkeleton::Alpha(), TerraNode::box, TerraVertex::c, Box2::Inside(), na, s, TerraVertexSlope::sy, and Vector::Z.

◆ Memory()

int Terra2013VertexSlopeNoise::Memory ( ) const

virtual

Compute the size of a node.

Reimplemented from TerraVertexSlope.

References Terra2013VertexSlopeNoise().

Public Member Functions