TerraScale Class Reference

Scaling operator. More...

#include <archestree.h>

Inheritance diagram for TerraScale:

Public Member Functions
	TerraScale (TerraNode *, const Vector &)
	Create a scaling node.
	TerraScale (TerraNode *, const Vector2 &)
	Create a scaling node.
	~TerraScale ()
	Recusively destroy the sub-tree.
virtual ScalarAlpha	ElevationAlpha (const Vector2 &) const
	Compute the elevation and weight.
virtual int	Memory () const
	Compute the size of a node.
Public Member Functions inherited from TerraUnary
	TerraUnary (TerraNode *)
	Create an unary node.
	~TerraUnary ()
	Recusively destroy the sub-tree.
virtual int	Traversal (const Vector2 &) const
	Compute the number of nodes that are traversed when evaluating the tree.
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 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.
virtual void	Draw (QGraphicsScene &) const
	Renders the node into a QGraphicsScene.

Protected Attributes
Vector	s
	Scaling vector.
Protected Attributes inherited from TerraUnary
TerraNode *	node = nullptr
	Sub-tree.
Protected Attributes inherited from TerraNode
Box2	box = Box2::Infinity
	Bounding box.

Additional Inherited Members
Static Public Member Functions inherited from TerraUnary
static TerraNode *	PutAt (TerraNode *, const Vector &, const double &, const Vector2 &)
	Place a node at a given location.
static TerraNode *	PutAt (TerraNode *, const double &, const Vector2 &)
	Place a node at a given location.
Static Protected Attributes inherited from TerraNode
static const double	epsilon = 1e-2
	Epsilon value for gradient computations.

Detailed Description

Scaling operator.

Constructor & Destructor Documentation

TerraScale() [1/2]

TerraScale::TerraScale ( TerraNode * node, const Vector & s )

explicit

Create a scaling node.

Parameters

node	Sub-tree.
s	Scaling vector.

References TerraNode::box, TerraUnary::node, s, and TerraUnary::TerraUnary().

Referenced by Memory(), and TerraScale().

TerraScale() [2/2]

TerraScale::TerraScale ( TerraNode * node, const Vector2 & s )

explicit

Create a scaling node.

Parameters

node	Sub-tree.
s	Scaling vector.

References TerraUnary::node, s, and TerraScale().

~TerraScale()

TerraScale::~TerraScale

(

)

Recusively destroy the sub-tree.

Member Function Documentation

ElevationAlpha()

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

virtual

Compute the elevation and weight.

Parameters

p

Point.

Reimplemented from TerraNode.

References ScalarAlpha::Alpha(), TerraNode::box, ScalarAlpha::Empty, TerraUnary::node, s, Vector2::Scaled(), and ScalarAlpha::Value().

Memory()

int TerraScale::Memory ( ) const

virtual

Compute the size of a node.

Reimplemented from TerraUnary.

References TerraUnary::node, and TerraScale().