SDFConvex Class Reference

Convex polyhedra. More...

#include <sdf.h>

Inheritance diagram for SDFConvex:

Public Member Functions
	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.
virtual double	Signed (const Vector &) const
	Compute the signed distance.
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 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
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

Convex polyhedra.

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

Constructor & Destructor Documentation

SDFConvex() [1/8]

SDFConvex::SDFConvex ( const Box & b )

explicit

Create a convex primitive from a box.

Parameters

b

The box.

SDFConvex() [2/8]

SDFConvex::SDFConvex ( const Dodecahedron & dodeca )

explicit

Create a convex from a dodecahedron.

Parameters

dodeca

Dodecahedron.

SDFConvex() [3/8]

SDFConvex::SDFConvex ( const Tetrahedra & tetra )

explicit

Create a convex from a tetrahedron.

Parameters

tetra

Tetrahedron.

SDFConvex() [4/8]

SDFConvex::SDFConvex ( const Octahedron & octa )

explicit

Create a convex from an octahedron.

See also

SDFOctahedron

Parameters

octa	Octahedron.

SDFConvex() [5/8]

SDFConvex::SDFConvex ( const Icosahedron & icosa )

explicit

Create a convex from an icosahedron.

Parameters

icosa

Icosahedron.

SDFConvex() [6/8]

SDFConvex::SDFConvex ( const Icosidodecahedron & icosi )

explicit

Create a convex primitive from an icosidodecahedron.

Parameters

icosi

Icosidodecahedron.

SDFConvex() [7/8]

SDFConvex::SDFConvex ( const QVector< Plane > & p )

explicit

Create a convex primitive from a set of planes.

Parameters

p	Set of planes.

SDFConvex() [8/8]

SDFConvex::SDFConvex ( const QVector< Plane > & p, const Box & bbox )

explicit

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

This constructor avoids the O(n⁴) computation of the bounding box of the other constructor.

Parameters

p	Set of planes.
bbox	Bounding box.

Member Function Documentation

GetCostShader()

QString SDFConvex::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 SDFPrimitive.

GetGradientShader()

QString SDFConvex::GetGradientShader ( PrimitiveManager * primitives, std::list< QString > * dependency, bool * valid_glsl ) const

virtual

Compute the GLSL code to compute the gradient the sdf.

Author

HUEBRT-BRIERRE Pierre

Reimplemented from SDFNode.

GetShader()

QString SDFConvex::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 SDFNode.

Memory()

int SDFConvex::Memory ( ) const

virtual

Return the size of a sub-tree.

Reimplemented from SDFNode.

Reimplemented in SDFConvexSmooth.

Signed()

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

virtual

Compute the signed distance.

Parameters

p

Point.

Signed distance is defined and computed as the maximum (intersection) of the signed distance field values from the planes.

Reimplemented from SDFPrimitive.

Reimplemented in SDFConvexSmooth.