TerraCubicImage Class Reference

Image-based primitive along a curve. More...

#include <archestree.h>

Inheritance diagram for TerraCubicImage:

Public Member Functions
	TerraCubicImage (const Vector &, const Vector &, const Vector &, const Vector &, const double &, const double &, const QString &, const QString &, const double &=0.5)
	Create an image-based primitive along a curve.
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 TerraCubic
	TerraCubic (const CubicCurve &, const double &, const double &, const double &, const double &=1.0, bool=true)
	Create a generate cubic curve skeletal element.
Public Member Functions inherited from TerraPrimitive
	TerraPrimitive (const double &=1.0, const double &=1.0)
	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.
double	Alpha (const double &) const
	Compute the falloff function.
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.
Public Member Functions inherited from TerraField
	TerraField (const QString &)
	Create the node.
	TerraField (const QString &, const QString &)
	Create an image primitive.

Additional Inherited Members
Static Public Member Functions inherited from TerraField
static void	Store (const ScalarField2 &, const QString &)
	Store an image in the set of image instances.
static void	Store (const QImage &, const QString &)
	Store an image in the set of image instances.
static void	Store (const QString &, const QString &)
	Store an image in the set of image instances.
Public Attributes inherited from TerraCubic
CubicCurve2	cubic
	Cubic curve in the plane.
double	rb
	Offset radius.
bool	cut
	Boolean for round or straight cut.
Protected Member Functions inherited from TerraField
const ScalarField2 &	GetImage (int) const
	Get the reference to the k-th image in the atlas.
Static Protected Member Functions inherited from TerraField
static bool	ExistsInStorage (const QString &)
	Checks if an image exists in the atlas.
static int	IndexInStorage (const QString &)
	Checks if an image exists in the atlas, and returns its index.
Protected Attributes inherited from TerraPrimitive
double	alpha = 1.0
	Weight.
Protected Attributes inherited from TerraNode
Box2	box = Box2::Infinity
	Bounding box.
Protected Attributes inherited from TerraField
int	alf = -1
	Indexes storing the reference to the field and the alpha mask.
Static Protected Attributes inherited from TerraCubic
static const double	epsilon = 1e-6
	Epsilon value for computing the limit of the curvilinear absisca of a point along the curve.
Static Protected Attributes inherited from TerraNode
static const double	epsilon = 1e-2
	Epsilon value for gradient computations.
Static Protected Attributes inherited from TerraField
static QVector< ScalarField2 >	images
	Set of images that will be shared by the instances of TerraField.
static QVector< QString >	aliases
	Identifier as names of the images.

Detailed Description

Image-based primitive along a curve.

Constructor & Destructor Documentation

TerraCubicImage()

TerraCubicImage::TerraCubicImage ( const Vector & a, const Vector & b, const Vector & ta, const Vector & tb, const double & r, const double & z, const QString & image, const QString & alpha, const double & beta = 0.5 )

explicit

Create an image-based primitive along a curve.

Parameters

a,b	Control points.
ta,tb	Control tangents.
r	Radius.
z	Elevation.

References TerraPrimitive::alpha, TerraNode::box, TerraCubic::TerraCubic(), and TerraField::TerraField().

Referenced by Memory().

Member Function Documentation

ElevationAlpha()

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

virtual

Compute the elevation and weight.

Parameters

p

Point.

Reimplemented from TerraCubic.

References TerraNode::box, TerraCubic::cubic, and TerraCubic::rb.