SDFTree2 Class Reference

Signed distance field construction tree. More...

#include <sdf.h>

Inheritance diagram for SDFTree2:

Public Member Functions
	SDFTree2 (SDFNode2 *)
	Constructor.
	~SDFTree2 ()
	Destructor.
double	Value (const Vector2 &) const
	Computes the signed distance to the surface.
Vector2	Gradient (const Vector2 &) const
	Compute the gradient of the field.
Vector2	Normal (const Vector2 &) const
	Compute the normal of the field.
bool	Inside (const Vector2 &) const
	Check if a point is inside or outside.
double	K () const
	Computes the Lipschitz constant of the construction tree.
Box2	GetBox () const
	Get the bounding box of the construction tree.
bool	SphereTrace (const Ray2 &, const double &, const double &, const double &, double &, int &, const double &=0.001) const
	Find the first intersection between a ray and the object.
bool	Intersect (const Ray2 &, Vector2 &) const
	Intersection with the construction tree, using sphere tracing.
virtual int	Memory () const
	Computes the memory used by the construction tree.
int	Nodes () const
	Returns the number of nodes in the tree.
SDFNode2 *	Root () const
	Returns the root of the tree.

Static Public Member Functions
static void	ResetCalls ()
	Reset the call property of the tree.
static int	Calls ()
	Returns the number of calls to Value().

Protected Attributes
SDFNode2 *	root = nullptr
	Root node.

Static Protected Attributes
static int	calls = 0
	Number of call to SDFTree::Value(). <FONT COLOR="AA2222"><B>Warning</B></FONT> this will not give the correct number when used in a multi-threaded context (for example when raytracing the tree).

Detailed Description

Signed distance field construction tree.

Constructor & Destructor Documentation

SDFTree2()

SDFTree2::SDFTree2 ( SDFNode2 * r )

explicit

Constructor.

Parameters

r	Root node.

Member Function Documentation

Gradient()

Vector2 SDFTree2::Gradient ( const Vector2 & p ) const

virtual

Compute the gradient of the field.

Parameters

p

Point.

Reimplemented from AnalyticScalarField2.

Inside()

bool SDFTree2::Inside

(

const Vector2 &

p

)

const

Check if a point is inside or outside.

Parameters

p

Point.

Normal()

Vector2 SDFTree2::Normal

(

const Vector2 &

p

)

const

Compute the normal of the field.

Parameters

p

Point.

SphereTrace()

bool SDFTree2::SphereTrace	(	const Ray2 &	ray,
		const double &	k,
		const double &	a,
		const double &	b,
		double &	t,
		int &	s,
		const double &	epsilon = 0.001 ) const

Find the first intersection between a ray and the object.

Parameters

ray	The ray
k	Lipschitz constant.
a,b	Searching interval.
t	Returned intersection depth.
s	Returned step count.
epsilon	Minimum stepping distance.

Value()

double SDFTree2::Value ( const Vector2 & p ) const

virtual

Computes the signed distance to the surface.

Parameters

p

Point.

Reimplemented from AnalyticScalarField2.