TerraBinary Class Reference

Binary operators. More...

#include <archestree.h>

Inheritance diagram for TerraBinary:

Public Member Functions
	TerraBinary (TerraNode *, TerraNode *)
	Create a binary node. More...
virtual	~TerraBinary ()
	Recusively destroy the sub-trees.
virtual int	Traversal (const Vector2 &) const
	Compute the number of nodes that are traversed when evaluating the tree. More...
virtual int	Memory () const
	Compute the size of a node. More...
virtual void	Draw (QGraphicsScene &) const
	Renders the node into a QGraphicsScene. 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 ScalarAlpha	ElevationAlpha (const Vector2 &) const
	Compute the elevation and weight. More...
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
TerraNode *	a = nullptr
	Left sub-tree.
TerraNode *	b = nullptr
	Right sub-tree.
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

Binary operators.

Constructor & Destructor Documentation

TerraBinary()

TerraBinary::TerraBinary ( TerraNode *  a, TerraNode *  b  )

explicit

Create a binary node.

Parameters

a,b	Sub-trees.

References a, and b.

Referenced by Memory().

Member Function Documentation

Draw()

void TerraBinary::Draw ( QGraphicsScene &  scene ) const

virtual

Renders the node into a QGraphicsScene.

Parameters

scene

Graphics scene.

Reimplemented from TerraNode.

References a, b, and TerraNode::Draw().

Memory()

int TerraBinary::Memory ( ) const

virtual

Compute the size of a node.

Reimplemented from TerraNode.

References a, b, TerraNode::Memory(), and TerraBinary().

Traversal()

int TerraBinary::Traversal ( const Vector2 &  p ) const

virtual

Compute the number of nodes that are traversed when evaluating the tree.

Parameters

p

Point.

Reimplemented from TerraNode.

References a, b, TerraNode::box, Box2::Inside(), and TerraNode::Traversal().