TerraCurveThick Class Reference

Image function. More...

#include <archestree.h>

Inheritance diagram for TerraCurveThick:

Public Member Functions
	TerraCurveThick (const QuadricCurve2Set &curve, const double &radius, const double &radius_external, const double &central_weight, const ScalarField2 &, const ScalarField2 &)
	Create a cubic curve skeleton.
	TerraCurveThick (const QuadricCurve2Set &curve, const double &radius, const double &radius_external, const CubicSet &curve_z, const ScalarField2 &, const ScalarField2 &)
	Create a cubic curve skeleton.
ScalarAlpha	ElevationAlpha (const Vector2 &) const
	Compute a value with the turbulence.
bool	ComputeUV (const Vector2 &, double &u, double &v) const
	Computes the U and V (parametrized arguments) of a 2D point.
virtual void	Draw (QGraphicsScene &) const
	Draw.
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.
virtual int	Memory () const
	Compute the size of a node.
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
QuadricCurve2Set	m_curve_xy
	2D Curve footprint (at more than distance == not defined)
Protected Attributes inherited from TerraPrimitive
double	alpha = 1.0
	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

Image function.

Constructor & Destructor Documentation

TerraCurveThick() [1/2]

TerraCurveThick::TerraCurveThick	(	const QuadricCurve2Set &	curve,
		const double &	radius,
		const double &	radius_external,
		const double &	central_weight,
		const ScalarField2 &	h,
		const ScalarField2 &	a )

Create a cubic curve skeleton.

Parameters

curve_

2D Cubic Curve.

References TerraNode::box, Cubic::Hermite(), m_curve_xy, and QuadricCurve2Set::Size().

TerraCurveThick() [2/2]

TerraCurveThick::TerraCurveThick	(	const QuadricCurve2Set &	curve,
		const double &	radius,
		const double &	radius_external,
		const CubicSet &	curve_z,
		const ScalarField2 &	h,
		const ScalarField2 &	a )

Create a cubic curve skeleton.

Parameters

curve_

2D Cubic Curve.

References TerraNode::box, and m_curve_xy.

Member Function Documentation

ComputeUV()

bool TerraCurveThick::ComputeUV	(	const Vector2 &	pt,
		double &	u,
		double &	v ) const

Computes the U and V (parametrized arguments) of a 2D point.

Parameters

pt

Point.

References TerraNode::box, m_curve_xy, and Vector2::ToVector().

Referenced by ElevationAlpha().

ElevationAlpha()

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

virtual

Compute a value with the turbulence.

Parameters

p

Point.

Reimplemented from TerraNode.

References ComputeUV(), and ScalarAlpha::Empty.