Smooth difference operator. More...

#include <sdf.h>

Inheritance diagram for SDFSmoothDifference:

Public Member Functions
	SDFSmoothDifference (SDFNode , SDFNode , const double &)
	Create a smooth difference.
	SDFSmoothDifference (SDFNode , SDFNode , SDFNode *, const double &)
	Create a smooth difference.
	SDFSmoothDifference (const QJsonValue &json)
QJsonValue	ToJson () const
	Conversion to JavaScript Object Notation.
virtual	~SDFSmoothDifference ()
	Destructor.
virtual double	Signed (const Vector &) const
	Compute the signed distance.
virtual Vector	Gradient (const Vector &) const
	Compute the gradient of the field.
QString	GetShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to render the node.
QString	GetGradientShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to compute the gradient the sdf.
QString	GetCostShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to compute the cost of a call to sdf.
virtual int	Memory () const
	Return the size of a sub-tree.
virtual SDFNode *	Copy () const
	Deep copy.
Public Member Functions inherited from SDFDifference
	SDFDifference (SDFNode , SDFNode )
	Create a difference node.
	SDFDifference (SDFNode , SDFNode , SDFNode *)
	Create a difference hierarchy.
	SDFDifference (SDFNode , SDFNode , SDFNode , SDFNode )
	Create a difference hierarchy.
	SDFDifference (const QJsonValue &)
virtual	~SDFDifference ()
	Destructor.
QString	GetMaterialShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to compute the material the sdf at a given point 'p' with a given normal 'n'.
Public Member Functions inherited from SDFBinary
	SDFBinary (SDFNode , SDFNode )
	Create a binary node.
virtual	~SDFBinary ()
	Recursively destroy the sub-trees.
virtual double	K (const Box &) const
	Return the local Lipschitz constant.
virtual void	SetShaderId (PrimitiveManager &)
	Set up an id for generating GLSL code.
virtual void	ResetShaderId ()
	Reset the id for generating GLSL code.
virtual void	ComputeCostSigned (const Vector &)
	Compute the number of reccursive calls to Signed().
int	Nodes () const
	Compute the number of nodes in the sub-tree.
Public Member Functions inherited from SDFNode
	SDFNode ()
	Create a generic node.
virtual	~SDFNode ()
	Destructor.
virtual double	BID (const Vector &) const
	Compute a lower bound of the signed distance.
virtual bool	Inside (const Vector &) const
	Check if a point is inside or outside.
virtual Color	GetColor (const Vector &) const
	Computes the color.
virtual double	K () const
	Return the Lipschitz constant of the node.
Box	GetBox () const
	Return the bounding box of the node.
void	ResetShaderId ()
	Reset the id for generating GLSL code.
virtual void	ComputeCostBID (const Vector &)
	Compute the number of reccursive calls to BID() and Signed().

Protected Attributes
double	smooth
	Smoothing distance.
Protected Attributes inherited from SDFBinary
SDFNode *	e [2] = { nullptr,nullptr }
	Sub-trees.
Protected Attributes inherited from SDFNode
Box	box = Box::Infinity
	Box bounding the surface.
double	k = 1.0
	Lipschitz constant.
int	cost = 1
	Relative computation cost.
int	id = -1
	Id to optimize the glsl code generation (avoid repetition when looking twice the same node).

Additional Inherited Members
Static Public Member Functions inherited from SDFDifference
static double	Signed (const double &, const double &)
	Compute the difference between two distance field values.
Static Public Member Functions inherited from SDFNode
static SDFNode *	FromJson (const QJsonValue &json)
	Conversion from JavaScript Object Notation.
static void	ResetReccursiveCalls ()
	Reset the reccursive call property of the tree.
static int	ReccursiveCalls ()
	Returns the number of reccursive calls to Value() and BID().
static void	addReccursiveCalls (int)
	Add a nulber to the nbreccursiveCalls.
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.
static SDFNode *	SpherePieces ()
	Sphere carved, placed on a cylinder. Nice scene for testing sharp features reconstruction.
Static Protected Attributes inherited from SDFNode
static constexpr double	Epsilon = 0.01
	Small constant used for bounding volumes.
static int	reccursiveCalls = 0
	Recursive calls to BID or Value.

Detailed Description

Smooth difference operator.

Constructor & Destructor Documentation

◆ SDFSmoothDifference() [1/3]

SDFSmoothDifference::SDFSmoothDifference	(	SDFNode *	a,
		SDFNode *	b,
		const double &	s )

explicit

Create a smooth difference.

Parameters

a,b	Sub-trees.
s	Smoothing radius.

◆ SDFSmoothDifference() [2/3]

SDFSmoothDifference::SDFSmoothDifference	(	SDFNode *	a,
		SDFNode *	b,
		SDFNode *	c,
		const double &	s )

explicit

Create a smooth difference.

This operator is evaluated as (a \ b ) \ c.

Parameters

a,b,c	Sub-trees.
s	Smoothing distance.

◆ SDFSmoothDifference() [3/3]

SDFSmoothDifference::SDFSmoothDifference ( const QJsonValue & json )

explicit

Member Function Documentation

◆ GetCostShader()

QString SDFSmoothDifference::GetCostShader	(	PrimitiveManager &	primitives,
		std::list< QString > &	dependency,
		bool &	valid_glsl ) const

virtual

Compute the GLSL code to compute the cost of a call to sdf.

Author: Hubert-Brierre Pierre

Reimplemented from SDFBinary.

◆ GetGradientShader()

QString SDFSmoothDifference::GetGradientShader	(	PrimitiveManager &	,
		std::list< QString > &	,
		bool &	valid_glsl ) const

virtual

Compute the GLSL code to compute the gradient the sdf.

Author: HUEBRT-BRIERRE Pierre

Reimplemented from SDFDifference.

◆ GetShader()

QString SDFSmoothDifference::GetShader	(	PrimitiveManager &	primitives,
		std::list< QString > &	dependency,
		bool &	valid_glsl ) const

virtual

Compute the GLSL code to render the node.

Author: Hubert-Brierre Pierre

Reimplemented from SDFDifference.

◆ Gradient()

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

virtual

Compute the gradient of the field.

Parameters

p Point.

Reimplemented from SDFDifference.

◆ Memory()

int SDFSmoothDifference::Memory ( ) const

virtual

Return the size of a sub-tree.

Reimplemented from SDFDifference.

◆ Signed()

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

virtual

Compute the signed distance.

Parameters

p Point.

Reimplemented from SDFDifference.

◆ ToJson()

QJsonValue SDFSmoothDifference::ToJson ( ) const

virtual

Conversion to JavaScript Object Notation.

Reimplemented from SDFDifference.

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SDFSmoothDifference() [1/3]

◆ SDFSmoothDifference() [2/3]

◆ SDFSmoothDifference() [3/3]

Member Function Documentation

◆ GetCostShader()

◆ GetGradientShader()

◆ GetShader()

◆ Gradient()

◆ Memory()

◆ Signed()

◆ ToJson()