TerraBinary Class Reference

Binary operators. More...

#include <archestree.h>

Inheritance diagram for TerraBinary:

Public Member Functions
	TerraBinary (TerraNode *, TerraNode *)
	Create a binary node.
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.
virtual int	Memory () const
	Compute the size of a node.
virtual void	Draw (QGraphicsScene &) const
	Renders the node into a QGraphicsScene.
Public Member Functions inherited from TerraNode
	TerraNode (const Box2 &=Box2::Infinity)
	Create a node.
virtual Box2	GetBox () const
	Returns the bouding box of a node.
virtual ScalarAlpha	ElevationAlpha (const Vector2 &) const
	Compute the elevation and weight.
virtual double	Elevation (const Vector2 &) const
	Compute the elevation at a given position.
virtual double	Alpha (const Vector2 &) const
	Compute the alpha mask at a given position.
virtual Vector2	Gradient (const Vector2 &) const
	Compute the gradient at a given position.
virtual Vector	Normal (const Vector2 &) const
	Compute the normal at a given position.
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.
ScalarField2	Alpha (const Array2 &) const
	Create a discrete scalar field by sampling the elevation over a given domain.
void	Blend (HeightField &) const
	Blend a given node with an existing terrain over an input heightfield.
void	Add (HeightField &) const
	Add a given node with an existing heightfield.

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, b, TerraNode::GetBox(), and TerraNode::TerraNode().

Referenced by Memory(), Terra2015Replace::Terra2015Replace(), Terra2015ReplaceAlpha::Terra2015ReplaceAlpha(), Terra2015ReplaceMaxAlpha::Terra2015ReplaceMaxAlpha(), TerraAdd::TerraAdd(), TerraBinaryBlend::TerraBinaryBlend(), TerraHighest::TerraHighest(), TerraHighest::TerraHighest(), TerraLowest::TerraLowest(), TerraReplace::TerraReplace(), and TerraSub::TerraSub().

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, and b.

Memory()

int TerraBinary::Memory ( ) const

virtual

Compute the size of a node.

Reimplemented from TerraNode.

References a, b, 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, and TerraNode::box.