A vtkPlanesIntersection object is a vtkPlanes object that can compute whether the arbitrary convex region bounded by it's planes intersects an axis-aligned box. More...

#include <vtkPlanesIntersection.h>

Inheritance diagram for vtkPlanesIntersection:

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Collaboration diagram for vtkPlanesIntersection:

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Public Member Functions
virtual int	IsA (const char *type)

vtkPlanesIntersection *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

void	SetRegionVertices (vtkPoints *pts)

void	SetRegionVertices (double *v, int nvertices)

int	GetNumberOfRegionVertices ()

int	GetNumRegionVertices ()

int	GetRegionVertices (double *v, int nvertices)

int	IntersectsRegion (vtkPoints *R)

Public Member Functions inherited from vtkPlanes
vtkPlanes *	NewInstance () const

void	EvaluateGradient (double x[3], double n[3])

void	SetFrustumPlanes (double planes[24])

int	GetNumberOfPlanes ()

double	EvaluateFunction (double x[3])

double	EvaluateFunction (double x, double y, double z)

virtual void	SetPoints (vtkPoints *)

virtual vtkPoints *	GetPoints ()

void	SetNormals (vtkDataArray *normals)

virtual vtkDataArray *	GetNormals ()

void	SetBounds (const double bounds[6])

void	SetBounds (double xmin, double xmax, double ymin, double ymax, double zmin, double zmax)

vtkPlane *	GetPlane (int i)

void	GetPlane (int i, vtkPlane *plane)

Public Member Functions inherited from vtkImplicitFunction
vtkImplicitFunction *	NewInstance () const

unsigned long	GetMTime ()

double	FunctionValue (const double x[3])

double	FunctionValue (double x, double y, double z)

void	FunctionGradient (const double x[3], double g[3])

double *	FunctionGradient (const double x[3])

double *	FunctionGradient (double x, double y, double z)

virtual void	SetTransform (vtkAbstractTransform *)

virtual void	SetTransform (const double elements[16])

virtual vtkAbstractTransform *	GetTransform ()

double	EvaluateFunction (double x, double y, double z)

Public Member Functions inherited from vtkObject
vtkObject *	NewInstance () const

virtual void	DebugOn ()

virtual void	DebugOff ()

bool	GetDebug ()

void	SetDebug (bool debugFlag)

virtual void	Modified ()

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)

vtkCommand *	GetCommand (unsigned long tag)

void	RemoveObserver (vtkCommand *)

void	RemoveObservers (unsigned long event, vtkCommand *)

void	RemoveObservers (const char event, vtkCommand )

int	HasObserver (unsigned long event, vtkCommand *)

int	HasObserver (const char event, vtkCommand )

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	HasObserver (const char *event)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

int	InvokeEvent (unsigned long event, void *callData)

int	InvokeEvent (const char event, void callData)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const

virtual void	Delete ()

virtual void	FastDelete ()

void	Print (ostream &os)

virtual void	Register (vtkObjectBase *o)

virtual void	UnRegister (vtkObjectBase *o)

void	SetReferenceCount (int)

void	PrintRevisions (ostream &)

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

int	GetReferenceCount ()

Static Public Member Functions
static int	IsTypeOf (const char *type)

static vtkPlanesIntersection *	SafeDownCast (vtkObjectBase *o)

static vtkPlanesIntersection *	New ()

static int	PolygonIntersectsBBox (double bounds[6], vtkPoints *pts)

static vtkPlanesIntersection *	Convert3DCell (vtkCell *cell)

Static Public Member Functions inherited from vtkPlanes
static vtkPlanes *	New ()

static int	IsTypeOf (const char *type)

static vtkPlanes *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkImplicitFunction
static int	IsTypeOf (const char *type)

static vtkImplicitFunction *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static int	IsTypeOf (const char *type)

static vtkObject *	SafeDownCast (vtkObjectBase *o)

static vtkObject *	New ()

static void	BreakOnError ()

static void	SetGlobalWarningDisplay (int val)

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static int	IsTypeOf (const char *name)

static vtkObjectBase *	New ()

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkPlanesIntersection ()

	~vtkPlanesIntersection ()

Protected Member Functions inherited from vtkPlanes
	vtkPlanes ()

	~vtkPlanes ()

Protected Member Functions inherited from vtkImplicitFunction
	vtkImplicitFunction ()

	~vtkImplicitFunction ()

Protected Member Functions inherited from vtkObject
	vtkObject ()

virtual	~vtkObject ()

virtual void	RegisterInternal (vtkObjectBase *, int check)

virtual void	UnRegisterInternal (vtkObjectBase *, int check)

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)

void	InternalReleaseFocus ()

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Static Protected Member Functions
static void	ComputeNormal (double p1, double p2, double *p3, double normal[3])

static double	EvaluatePlaneEquation (double x, double p)

static void	PlaneEquation (double n, double x, double *p)

static int	GoodNormal (double *n)

static int	Invert3x3 (double M[3][3])

Additional Inherited Members
Public Types inherited from vtkPlanes
typedef vtkImplicitFunction	Superclass

Public Types inherited from vtkImplicitFunction
typedef vtkObject	Superclass

Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

Protected Attributes inherited from vtkPlanes
vtkPoints *	Points

vtkDataArray *	Normals

vtkPlane *	Plane

Protected Attributes inherited from vtkImplicitFunction
vtkAbstractTransform *	Transform

double	ReturnValue [3]

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

A vtkPlanesIntersection object is a vtkPlanes object that can compute whether the arbitrary convex region bounded by it's planes intersects an axis-aligned box.

A subclass of vtkPlanes, this class determines whether it intersects an axis aligned box. This is motivated by the need to intersect the axis aligned region of a spacial decomposition of volume data with various other regions. It uses the algorithm from Graphics Gems IV, page 81.

Caveat:: An instance of vtkPlanes can be redefined by changing the planes, but this subclass then will not know if the region vertices are up to date. (Region vertices can be specified in SetRegionVertices or computed by the subclass.) So Delete and recreate if you want to change the set of planes.

Tests:: vtkPlanesIntersection (Tests)

Definition at line 54 of file vtkPlanesIntersection.h.

Constructor & Destructor Documentation

vtkPlanesIntersection::vtkPlanesIntersection ( )

protected

vtkPlanesIntersection::~vtkPlanesIntersection ( )

protected

Member Function Documentation

static int vtkPlanesIntersection::IsTypeOf ( const char * type )

static

virtual int vtkPlanesIntersection::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkPlanes.

static vtkPlanesIntersection* vtkPlanesIntersection::SafeDownCast ( vtkObjectBase * o )

static

virtual vtkObjectBase* vtkPlanesIntersection::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkPlanes.

vtkPlanesIntersection* vtkPlanesIntersection::NewInstance ( ) const

void vtkPlanesIntersection::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

virtual

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkPlanes.

static vtkPlanesIntersection* vtkPlanesIntersection::New ( )

static

void vtkPlanesIntersection::SetRegionVertices ( vtkPoints * pts )

It helps if you know the vertices of the convex region. If you don't, we will calculate them. Region vertices are 3-tuples.

void vtkPlanesIntersection::SetRegionVertices	(	double *	v,
		int	nvertices
	)

int vtkPlanesIntersection::GetNumberOfRegionVertices ( )

int vtkPlanesIntersection::GetNumRegionVertices ( )

inline

Definition at line 70 of file vtkPlanesIntersection.h.

int vtkPlanesIntersection::GetRegionVertices	(	double *	v,
		int	nvertices
	)

int vtkPlanesIntersection::IntersectsRegion ( vtkPoints * R )

Return 1 if the axis aligned box defined by R intersects the region defined by the planes, or 0 otherwise.

static int vtkPlanesIntersection::PolygonIntersectsBBox	(	double	bounds[6],
		vtkPoints *	pts
	)

static

A convenience function provided by this class, returns 1 if the polygon defined in pts intersects the bounding box defined in bounds, 0 otherwise. The points must define a planar polygon.

static vtkPlanesIntersection* vtkPlanesIntersection::Convert3DCell ( vtkCell * cell )

static

Another convenience function provided by this class, returns the vtkPlanesIntersection object representing a 3D cell. The point IDs for each face must be given in counter-clockwise order from the outside of the cell.

static void vtkPlanesIntersection::ComputeNormal	(	double *	p1,
		double *	p2,
		double *	p3,
		double	normal[3]
	)

staticprotected

static double vtkPlanesIntersection::EvaluatePlaneEquation	(	double *	x,
		double *	p
	)

staticprotected

static void vtkPlanesIntersection::PlaneEquation	(	double *	n,
		double *	x,
		double *	p
	)

staticprotected

static int vtkPlanesIntersection::GoodNormal ( double * n )

staticprotected

static int vtkPlanesIntersection::Invert3x3 ( double M[3][3] )

staticprotected

The documentation for this class was generated from the following file:

dox/Common/DataModel/vtkPlanesIntersection.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation