#include <archestree.h>

Inheritance diagram for TerraBox:

Public Member Functions
	TerraBox (const Box2 &, const double &, const double &, const double &)
	Create the node. More...

virtual ScalarAlpha	ElevationAlpha (const Vector2 &) const
	Compute the field at given point. More...

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

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

Protected Attributes
Box2	box
	Skeleton.

double	z
	Constant 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

Box node.

Constructor & Destructor Documentation

◆ TerraBox()

TerraBox::TerraBox	(	const Box2 &	box,
		const double &	z,
		const double &	r,
		const double &	alpha
	)

Create the node.

Parameters

box	The box.
z	Elevation.
r	Radius of influnce.
alpha	Alpha.

References TerraNode::box, box, Box2::Extended(), and z.

Referenced by Memory().

Member Function Documentation

◆ ElevationAlpha()

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

virtual

Compute the field at given point.

Parameters

p Point.

Reimplemented from TerraNode.

References TerraSkeleton::Alpha(), box, Box2::Inside(), Box2::R(), and z.

◆ Memory()

int TerraBox::Memory ( ) const

virtual

Compute the size of a node.

Reimplemented from TerraNode.

References TerraBox().

Public Member Functions