SDFConvexSmooth Class Reference

Smooth convex primitives. More...

#include <sdf.h>

Inheritance diagram for SDFConvexSmooth:

Public Member Functions
	SDFConvexSmooth (const Box &, double=0.25)
	Create a convex primitive from a box.
	SDFConvexSmooth (const Dodecahedron &, double=0.25)
	Create a convex primitive from a dodecahedron.
	SDFConvexSmooth (const Tetrahedra &, double=0.25)
	Create a convex primitive from a tetrahedra.
	SDFConvexSmooth (const Octahedron &, double=0.25)
	Create a convex primitive from an octahedron.
	SDFConvexSmooth (const QVector< Plane > &, double=0.25)
	Create a convex primitive from a set of planes.
	SDFConvexSmooth (const QVector< Plane > &, const Box &, double=0.25)
	Create a smooth convex primitive from a set of planes, and a bounding box already computed.
virtual	~SDFConvexSmooth ()
	Destructor.
virtual double	Signed (const Vector &) const
	Compute the signed distance function.
virtual int	Memory () const
	Return the size of a sub-tree.
virtual SDFNode *	Copy () const
	Deep copy.
Public Member Functions inherited from SDFConvex
	SDFConvex (const Box &)
	Create a convex primitive from a box.
	SDFConvex (const Dodecahedron &)
	Create a convex from a dodecahedron.
	SDFConvex (const Tetrahedra &)
	Create a convex from a tetrahedron.
	SDFConvex (const Octahedron &)
	Create a convex from an octahedron.
	SDFConvex (const Icosahedron &)
	Create a convex from an icosahedron.
	SDFConvex (const Icosidodecahedron &)
	Create a convex primitive from an icosidodecahedron.
	SDFConvex (const QVector< Plane > &)
	Create a convex primitive from a set of planes.
	SDFConvex (const QVector< Plane > &, const Box &)
	Create a convex primitive from a set of planes, and an already computed bounding box.
virtual	~SDFConvex ()
	Destructor.
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.
Public Member Functions inherited from SDFPrimitive
	SDFPrimitive ()
	Create a primitive.
virtual	~SDFPrimitive ()
	Destructor.
virtual void	ComputeCostSigned (const Vector &)
	Compute the number of reccursive calls to Signed().
virtual QString	GetMaterialShader (PrimitiveManager *, std::list< QString > *, bool *) const
	Compute the GLSL code to compute the material of the object.
void	setShaderMaterial (ShaderMaterial *)
	Set the material of the primitive for the glsl code.
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 Vector	Gradient (const Vector &) const
	Compute the gradient of the field.
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.
virtual double	K (const Box &) const
	Return the local Lipschitz constant.
Box	GetBox () const
	Return the bounding box of the node.
virtual int	Nodes () const
	Compute the number of nodes in the sub-tree.
virtual void	ComputeCostBID (const Vector &)
	Compute the number of reccursive calls to BID() and Signed().

Protected Attributes
double	t
	Smoothing radius.
Protected Attributes inherited from SDFConvex
QVector< Plane >	planes
	Set of intersecting planes.
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.

Additional Inherited Members
Static Public Member Functions inherited from SDFNode
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 convex primitives.

The signed distance function is defined as the smooth maximum signed distance to planes.

Constructor & Destructor Documentation

SDFConvexSmooth() [1/6]

SDFConvexSmooth::SDFConvexSmooth ( const Box & b, double t = 0.25 )

explicit

Create a convex primitive from a box.

Parameters

b	The box.
t	Smoothing distance.

SDFConvexSmooth() [2/6]

SDFConvexSmooth::SDFConvexSmooth ( const Dodecahedron & dodeca, double t = 0.25 )

explicit

Create a convex primitive from a dodecahedron.

Parameters

dodeca	Dodecahedron.
t	Smoothing distance.

SDFConvexSmooth() [3/6]

SDFConvexSmooth::SDFConvexSmooth ( const Tetrahedra & tetra, double t = 0.25 )

explicit

Create a convex primitive from a tetrahedra.

Parameters

tetra	Tetrahedron.
t	Smoothing distance.

SDFConvexSmooth() [4/6]

SDFConvexSmooth::SDFConvexSmooth ( const Octahedron & octa, double t = 0.25 )

explicit

Create a convex primitive from an octahedron.

Parameters

octa	Octahedron.
t	Smoothing distance.

SDFConvexSmooth() [5/6]

SDFConvexSmooth::SDFConvexSmooth ( const QVector< Plane > & planes, double t = 0.25 )

explicit

Create a convex primitive from a set of planes.

Parameters

planes	Set of planes.
t	Smoothing distance.

SDFConvexSmooth() [6/6]

SDFConvexSmooth::SDFConvexSmooth ( const QVector< Plane > & planes, const Box & bbox, double t = 0.25 )

explicit

Create a smooth convex primitive from a set of planes, and a bounding box already computed.

This constructor is used to avoid the O(n^4) computation of the bounding box in the constructor above.

Parameters

planes	Set of planes.
bbox	Bounding box.
t	Smoothing distance.

Member Function Documentation

Memory()

int SDFConvexSmooth::Memory ( ) const

virtual

Return the size of a sub-tree.

Reimplemented from SDFConvex.

Signed()

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

virtual

Compute the signed distance function.

Parameters

p

Point.

Reimplemented from SDFConvex.