TreeCircle Class Reference

Circle primitive that generates a torus like element. More...

#include <blobtree.h>

Inheritance diagram for TreeCircle:

Public Member Functions
	TreeCircle (const Vector &, const Vector &, const double &, BlendCompact *)
	Create a circle element. More...
	TreeCircle (const Vector &, const double &, BlendCompact *)
	Create a horizontal circle element. More...
virtual	~TreeCircle ()
	Destroys a circle primitive.
virtual TreeNode *	Copy () const
	Creates a deep copy of a circle primitive.
int	Memory () const
	Compute the size of a node.
double	K (const Ray &) const
	Returns a local Lipschitz constant along a ray. More...
double	Intensity (const Vector &) const
	Computes the intensity at given point in space. More...
Public Member Functions inherited from TreeNormal
	TreeNormal (BlendCompact *=nullptr)
	Creates a skeletal element given a blending function.
virtual	~TreeNormal ()
	Destroys a skeletal element.
virtual double	R (const Vector &) const
	Computes the squared Euclidean distance to the skeleton. More...
virtual Vector	Gradient (const Vector &) const
	Compute the gradient at a given point. More...
virtual void	IntensityGradient (const Vector &, double &, Vector &) const
	Compute the field value and the gradient of the field function at a given point in space. More...
virtual double	K (const Segment &) const
	Compute the Lipschitz constant on a segment. More...
virtual double	K (const RayStep &) const
	Compute the Lipschitz constant on a segment. More...
virtual double	K (const Sphere &) const
	Compute the Lipschitz constant inside a sphere. More...
Public Member Functions inherited from TreeElement
	TreeElement (BlendCompact *=nullptr)
	Creates a new element given a blending function.
virtual	~TreeElement ()
	Destroys an element. More...
double	K () const
	Returns the Lipschitz constant of the element. More...
double	K (const Box &) const
	Returns a local Lipschitz constant within a box domain. More...
TreeNode *	Cut (const Box &) const
	Cuts the node to simplify its structure inside a box. More...
Public Member Functions inherited from TreeNode
	TreeNode ()
	Create a virtual node of the Blob-Tree structure.
virtual	~TreeNode ()
	Destroys a node.
virtual TreeNode *	Blend (TreeNode *)
	Insert a blending node that blends the old and the new sub-tree together. More...
virtual TreeNode *	Union (TreeNode *)
	Insert a union node that unions the old and the new sub-tree together. More...
virtual TreeNode *	Difference (TreeNode *)
	Insert a difference node. More...
virtual TreeNode *	Translate (const Vector &)
	Insert a translation node. More...
virtual TreeNode *	Rotate (const Matrix &)
	Insert a rotation node. More...
virtual TreeNode *	Scale (const Vector &)
	Insert a scaling node. More...
Box	GetBox () const
	Return the bounding box of the node.
virtual void	SetThreshold (const double &)
	Set the threshold value. More...
virtual Color	GetMaterial (const Vector &, const Vector &=Vector::Null) const
	Gets the color of a node at a point. More...
virtual int	Nodes () const
	Compute the number of nodes of the sub-tree.
virtual int	Depth () const
	Compute the dpeth of the sub-tree.
virtual Vector	Dichotomy (Vector, Vector, double, double, double, const double &=1.0e-4)
	Compute the intersection between the implicit surface and a segment. More...

Additional Inherited Members
Protected Attributes inherited from TreeNode
Box	box = Box::Null
	Bounding box of the node.
double	T = 0.5
	Threshold value.
Static Protected Attributes inherited from TreeNode
static const double	Epsilon = 1e-6
	Epsilon value for gradient computation.

Detailed Description

Circle primitive that generates a torus like element.

Example of how to code a circle element:

TreeNode *circle=new TreeCircle(Vector(0.0),Vector(1,-1,1),4.0,new BlendCubic(2.0,1.0));

,

Constructor & Destructor Documentation

TreeCircle() [1/2]

TreeCircle::TreeCircle ( const Vector &  c, const Vector &  a, const double &  r, BlendCompact *  blend  )

explicit

Create a circle element.

Parameters

c	Center of the circle.
a	Axis (will be normalized internally).
r	Radius.
blend	Falloff function.

TreeCircle() [2/2]

TreeCircle::TreeCircle ( const Vector &  c, const double &  r, BlendCompact *  blend  )

explicit

Create a horizontal circle element.

Parameters

c	Center of the circle.
r	Radius.
blend	Falloff function.

Member Function Documentation

Intensity()

double TreeCircle::Intensity ( const Vector &  p ) const

virtual

Computes the intensity at given point in space.

Using Circle::R() instead of TreeCircle::Normal() speeds-up computations by 15%.

Parameters

p

Point.

Reimplemented from TreeNormal.

K()

double TreeCircle::K ( const Ray &  ray ) const

virtual

Returns a local Lipschitz constant along a ray.

Returns the Lipschitz constant of the element if argument ray intersects the element's bounding box.

Parameters

ray

The ray.

Reimplemented from TreeElement.