treat a volume as if it were an implicit function More...

#include <vtkImplicitVolume.h>

Inheritance diagram for vtkImplicitVolume:

Collaboration diagram for vtkImplicitVolume:

Public Types
typedef vtkImplicitFunction	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkImplicitVolume *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
unsigned long	GetMTime ()
void	EvaluateGradient (double x[3], double n[3])

double	EvaluateFunction (double x[3])
double	EvaluateFunction (double x, double y, double z)

virtual void	SetVolume (vtkImageData *)
virtual vtkImageData *	GetVolume ()

virtual void	SetOutValue (double)
virtual double	GetOutValue ()

virtual void	SetOutGradient (double, double, double)
virtual void	SetOutGradient (double[3])
virtual double *	GetOutGradient ()
virtual void	GetOutGradient (double &, double &, double &)
virtual void	GetOutGradient (double[3])
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkImplicitVolume *	SafeDownCast (vtkObjectBase *o)
static vtkImplicitVolume *	New ()
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkImplicitVolume ()
	~vtkImplicitVolume ()
Protected Attributes
vtkImageData *	Volume
double	OutValue
double	OutGradient [3]
vtkIdList *	PointIds

Detailed Description

treat a volume as if it were an implicit function

vtkImplicitVolume treats a volume (e.g., structured point dataset) as if it were an implicit function. This means it computes a function value and gradient. vtkImplicitVolume is a concrete implementation of vtkImplicitFunction.

vtkImplicitDataSet computes the function (at the point x) by performing cell interpolation. That is, it finds the cell containing x, and then uses the cell's interpolation functions to compute an interpolated scalar value at x. (A similar approach is used to find the gradient, if requested.) Points outside of the dataset are assigned the value of the ivar OutValue, and the gradient value OutGradient.

Warning:: The input volume data is only updated when GetMTime() is called. Works for 3D structured points datasets, 0D-2D datasets won't work properly.

See also:: vtkImplicitFunction vtkImplicitDataSet vtkClipPolyData vtkCutter vtkImplicitWindowFunction

Definition at line 48 of file vtkImplicitVolume.h.

Member Typedef Documentation

typedef vtkImplicitFunction vtkImplicitVolume::Superclass

Reimplemented from vtkImplicitFunction.

Definition at line 51 of file vtkImplicitVolume.h.

Constructor & Destructor Documentation

vtkImplicitVolume::vtkImplicitVolume ( ) [protected]

vtkImplicitVolume::~vtkImplicitVolume ( ) [protected]

Member Function Documentation

static int vtkImplicitVolume::IsTypeOf ( const char * name ) [static]

Return 1 if this class type 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 vtkImplicitFunction.

virtual int vtkImplicitVolume::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 vtkImplicitFunction.

static vtkImplicitVolume* vtkImplicitVolume::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkImplicitFunction.

virtual vtkObjectBase* vtkImplicitVolume::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkImplicitFunction.

vtkImplicitVolume* vtkImplicitVolume::NewInstance ( ) const

Reimplemented from vtkImplicitFunction.

void vtkImplicitVolume::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 vtkImplicitFunction.

static vtkImplicitVolume* vtkImplicitVolume::New ( ) [static]

Construct an vtkImplicitVolume with no initial volume; the OutValue set to a large negative number; and the OutGradient set to (0,0,1).

Reimplemented from vtkObject.

unsigned long vtkImplicitVolume::GetMTime ( ) [virtual]

Returns the mtime also considering the volume. This also calls Update on the volume, and it therefore must be called before the function is evaluated.

Reimplemented from vtkImplicitFunction.

double vtkImplicitVolume::EvaluateFunction ( double x[3] ) [virtual]

Evaluate the ImplicitVolume. This returns the interpolated scalar value at x[3].

Implements vtkImplicitFunction.

double vtkImplicitVolume::EvaluateFunction	(	double	x,
		double	y,
		double	z
	)		`[inline]`

Evaluate the ImplicitVolume. This returns the interpolated scalar value at x[3].

Reimplemented from vtkImplicitFunction.

Definition at line 67 of file vtkImplicitVolume.h.

void vtkImplicitVolume::EvaluateGradient	(	double	x[3],
		double	n[3]
	)		`[virtual]`

Evaluate ImplicitVolume gradient.

Implements vtkImplicitFunction.

virtual void vtkImplicitVolume::SetVolume ( vtkImageData * ) [virtual]

Specify the volume for the implicit function.

virtual vtkImageData* vtkImplicitVolume::GetVolume ( ) [virtual]

Specify the volume for the implicit function.

virtual void vtkImplicitVolume::SetOutValue ( double ) [virtual]

Set the function value to use for points outside of the dataset.

virtual double vtkImplicitVolume::GetOutValue ( ) [virtual]

Set the function value to use for points outside of the dataset.

virtual void vtkImplicitVolume::SetOutGradient	(	double	,
		double	,
		double
	)		`[virtual]`