SDFNode2 Class Reference

Base planar signed distance node. ,. More...

#include <sdf.h>

Inheritance diagram for SDFNode2:

Public Member Functions
	SDFNode2 ()
	Create a generic node.
virtual	~SDFNode2 ()
	Destructor.
virtual double	Signed (const Vector2 &) const
	Compute the signed distance.
virtual Vector2	Gradient (const Vector2 &) const
	Compute the gradient of the field.
virtual bool	Inside (const Vector2 &) const
	Check if a point is inside or outside.
virtual void	SetShaderId (PrimitiveManager &)
	Set up an id for generating GLSL code.
void	ResetShaderId ()
	Reset the id for generating GLSL code.
virtual QString	GetShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to render the node.
virtual QString	GetGradientShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to compute the gradient the sdf.
virtual QString	GetCostShader (PrimitiveManager &, std::list< QString > &, bool &) const
	Compute the GLSL code to compute the cost of a call to sdf.
virtual void	ComputeCostSigned (const Vector2 &)
	Compute the number of reccursive calls to Signed().
virtual QJsonValue	ToJson () const
	Conversion to JavaScript Object Notation.
virtual int	Memory () const
	Return the size of a sub-tree.
virtual double	K () const
	Return the Lipschitz constant of the node.
Box2	GetBox () const
	Return the bounding box of the node.
virtual int	Nodes () const
	Compute the number of nodes in the sub-tree.

Static Public Member Functions
static SDFNode2 *	FromJson (const QJsonValue &json)
	Conversion from JavaScript Object Notation.

Protected Attributes
Box2	box = Box2::Infinity
	Box bounding the surface.
double	k = 1.0
	Lipschitz constant.
int	cost = 1
	Cost of the node.

Static Protected Attributes
static constexpr double	Epsilon = 0.01
	Small constant used for bounding volumes.

Detailed Description

Base planar signed distance node. ,.

Constructor & Destructor Documentation

SDFNode2()

SDFNode2::SDFNode2 ( )

explicit

Create a generic node.

Internally set Lipschitz bound to 1.0.

Member Function Documentation

ComputeCostSigned()

void SDFNode2::ComputeCostSigned ( const Vector2 & p )

virtual

Compute the number of reccursive calls to Signed().

Author

Hubert-Brierre Pierre

Reimplemented in SDFBinary2, SDFFrame2, SDFPrimitive2, SDFRotate2, SDFScale2, SDFTranslate2, SDFUnary2, and SDFUniformScale2.

FromJson()

SDFNode2 * SDFNode2::FromJson ( const QJsonValue & json )

static

Conversion from JavaScript Object Notation.

Parameters

json

Stream.

Author

Hubert-Brierre Pierre

GetCostShader()

QString SDFNode2::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 in SDFBinary2, SDFFrame2, SDFIntersection2, SDFPrimitive2, SDFRotate2, SDFScale2, SDFTranslate2, SDFUnary2, and SDFUniformScale2.

GetGradientShader()

QString SDFNode2::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 in SDFBox2, SDFRound2, and SDFUnion2.

GetShader()

QString SDFNode2::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 in SDFBox2, SDFCapsule2, SDFCircle2, SDFCircleArc2, SDFConvex2, SDFDifference2, SDFDisc2, SDFEllipse2, SDFFrame2, SDFHemiDisc2, SDFHexagon2, SDFIntersection2, SDFIsoceleTrapezoid2, SDFPentagon2, SDFPlane2, SDFPolygon2, SDFQuadricCurveSet2, SDFQuadricCurveSetThick2, SDFQuadricCylinder2, SDFRevolutionSymmetry2, SDFRotate2, SDFRound2, SDFScale2, SDFSmoothDifference2, SDFSmoothIntersection2, SDFSmoothUnion2, SDFThickSurface2, SDFTranslate2, SDFTriangle2, SDFUniformScale2, and SDFUnion2.

Gradient()

Vector2 SDFNode2::Gradient ( const Vector2 & p ) const

virtual

Compute the gradient of the field.

Parameters

p

Point.

Inside()

bool SDFNode2::Inside ( const Vector2 & p ) const

virtual

Check if a point is inside or outside.

Parameters

p

Point.

K()

double SDFNode2::K ( ) const

virtual

Return the Lipschitz constant of the node.

By default, nodes are considered as signed Euclidean distance functions, and the Lipschitz consistant is \(\lambda=1\).

Reimplemented in SDFUnary2.

ResetShaderId()

void SDFNode2::ResetShaderId

(

)

Reset the id for generating GLSL code.

Author

Hubert-Brierre Pierre

SetShaderId()

void SDFNode2::SetShaderId ( PrimitiveManager & primitives )

virtual

Set up an id for generating GLSL code.

Author

Hubert-Brierre Pierre

Reimplemented in SDFBinary2, and SDFUnary2.

Signed()

double SDFNode2::Signed ( const Vector2 & p ) const

virtual

Compute the signed distance.

Parameters

p

Point.

Reimplemented in SDFBox2, SDFCapsule2, SDFCircle2, SDFCircleArc2, SDFConvex2, SDFCubicCurveSet2, SDFDifference2, SDFDisc2, SDFEllipse2, SDFEuclidean2, SDFFrame2, SDFHeart2, SDFHemiDisc2, SDFHexagon2, SDFIntersection2, SDFIsoceleTrapezoid2, SDFNoise2, SDFPentagon2, SDFPlanarSymmetry2, SDFPlane2, SDFPolygon2, SDFPrimitive2, SDFQuadricCurve2, SDFQuadricCurveSet2, SDFQuadricCurveSetThick2, SDFQuadricCylinder2, SDFRevolutionSymmetry2, SDFRotate2, SDFRound2, SDFScale2, SDFSmoothDifference2, SDFSmoothIntersection2, SDFSmoothUnion2, SDFThickSurface2, SDFTranslate2, SDFTriangle2, SDFTurbulence2, SDFUnary2, SDFUniformScale2, and SDFUnion2.