SDFUnion Class Reference

Union operator. More...

#include <sdf.h>

Inheritance diagram for SDFUnion:

Public Member Functions
	SDFUnion (SDFNode *, SDFNode *)
	Create a union node. More...
	SDFUnion (SDFNode *, SDFNode *, SDFNode *)
	Create a union hierarchy ((A ∪ B) ∪ C). More...
	SDFUnion (SDFNode *, SDFNode *, SDFNode *, SDFNode *)
	Create a union hierarchy ((A ∪ B) ∪ (C ∪ D)). More...
double	Signed (const Vector &) const
	Compute the signed distance. More...
Vector	Gradient (const Vector &) const
	Compute the gradient of the field. More...
int	Memory () const
	Return the size of a sub-tree. More...
virtual SDFNode *	Copy () const
	Deep copy.
Public Member Functions inherited from SDFBinary
	SDFBinary (SDFNode *, SDFNode *)
	Create a binary node. More...
virtual	~SDFBinary ()
	Recursively destroy the sub-trees.
virtual double	K (const Box &) const
	Return the local Lipschitz constant. More...
int	Nodes () const
	Compute the number of nodes in the sub-tree. More...
Public Member Functions inherited from SDFNode
	SDFNode ()
	Create a generic node.
virtual	~SDFNode ()
	Destructor.
virtual bool	Inside (const Vector &) const
	Check if a point is inside or outside. More...
virtual double	K () const
	Return the Lipschitz constant of the node. More...
Box	GetBox () const
	Return the bounding box of the node.

Additional Inherited Members
Static Public Member Functions inherited from SDFNode
static double	SmoothingPolynomialCubic (double d1, double d2, double sr)
	Generalized C2 polynomial smoothing function between two distances. More...
static double	SmoothingPolynomial (double d1, double d2, double sr)
	Generalized C1 polynomial smoothing function between two distances. More...
static double	SmoothingQuilez (double d1, double d2, double sr)
	Generalized polynomial smoothing function between two distances. More...
static double	SmoothingExp (double d1, double d2, double sr)
	Generalized exponential smoothing function between two distances. More...
static SDFNode *	Stalactite (const Vector &p, const double &h, const double &r, bool noise=true, Random &random=Random::R239, const double &largeur=0.25, const double &espacement=0.61)
	Procedural parameterized stalactite. More...
static SDFNode *	SpherePieces ()
	Sphere carved, placed on a cylinder. Nice scene for testing sharp features reconstruction.
Protected Attributes inherited from SDFBinary
SDFNode *	e [2] = { nullptr,nullptr }
	Sub-trees.
Protected Attributes inherited from SDFNode
Box	box
	Box bounding the surface.
double	k
	Lipschitz constant.
Static Protected Attributes inherited from SDFNode
static constexpr double	Epsilon = 0.01
	Small constant used for bounding volumes.

Detailed Description

Union operator.

The union between two signed Euclidean distance functions yields another Euclidean signed distance function. ,

Constructor & Destructor Documentation

SDFUnion() [1/3]

SDFUnion::SDFUnion ( SDFNode *  a, SDFNode *  b  )

explicit

Create a union node.

Parameters

a,b	Sub-trees.

SDFUnion() [2/3]

SDFUnion::SDFUnion ( SDFNode *  a, SDFNode *  b, SDFNode *  c  )

explicit

Create a union hierarchy ((A ∪ B) ∪ C).

Parameters

a,b,c

Sub-trees.

SDFUnion() [3/3]

SDFUnion::SDFUnion ( SDFNode *  a, SDFNode *  b, SDFNode *  c, SDFNode *  d  )

explicit

Create a union hierarchy ((A ∪ B) ∪ (C ∪ D)).

Parameters

a,b,c,d

Sub-trees.

Member Function Documentation

Gradient()

Vector SDFUnion::Gradient ( const Vector &  p ) const

virtual

Compute the gradient of the field.

Parameters

p

Point.

Reimplemented from SDFNode.

Memory()

int SDFUnion::Memory ( ) const

virtual

Return the size of a sub-tree.

Reimplemented from SDFNode.

Reimplemented in SDFUnionR, and SDFSmoothUnionSphereLOD.

Signed()

double SDFUnion::Signed ( const Vector &  p ) const

virtual

Compute the signed distance.

Parameters

p

Point.

Reimplemented from SDFNode.

Reimplemented in SDFUnionR, and SDFSmoothUnionSphereLOD.