vtkHyperOctreeContourFilter Class Reference

#include <vtkHyperOctreeContourFilter.h>

Inheritance diagram for vtkHyperOctreeContourFilter:

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Collaboration diagram for vtkHyperOctreeContourFilter:

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List of all members.

Detailed Description

generate isosurfaces/isolines from scalar values

vtkContourFilter is a filter that takes as input any dataset and generates on output isosurfaces and/or isolines. The exact form of the output depends upon the dimensionality of the input data. Data consisting of 3D cells will generate isosurfaces, data consisting of 2D cells will generate isolines, and data with 1D or 0D cells will generate isopoints. Combinations of output type are possible if the input dimension is mixed.

To use this filter you must specify one or more contour values. You can either use the method SetValue() to specify each contour value, or use GenerateValues() to generate a series of evenly spaced contours. It is also possible to accelerate the operation of this filter (at the cost of extra memory) by using a vtkScalarTree. A scalar tree is used to quickly locate cells that contain a contour surface. This is especially effective if multiple contours are being extracted. If you want to use a scalar tree, invoke the method UseScalarTreeOn().

Warning:: For unstructured data or structured grids, normals and gradients are not computed. Use vtkPolyDataNormals to compute the surface normals.

See also:: vtkMarchingContourFilter vtkKitwareContourFilter vtkMarchingCubes vtkSliceCubes vtkDividingCubes vtkMarchingSquares vtkImageMarchingCubes

Tests:: vtkHyperOctreeContourFilter (Tests)

Definition at line 70 of file vtkHyperOctreeContourFilter.h.


Public Types
typedef vtkPolyDataAlgorithm	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
unsigned long	GetMTime ()
void	CreateDefaultLocator ()

void	SetValue (int i, double value)

double	GetValue (int i)

double *	GetValues ()

void	GetValues (double *contourValues)

void	SetNumberOfContours (int number)

int	GetNumberOfContours ()

void	GenerateValues (int numContours, double range[2])

void	GenerateValues (int numContours, double rangeStart, double rangeEnd)

void	SetLocator (vtkIncrementalPointLocator *locator)
virtual vtkIncrementalPointLocator *	GetLocator ()
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkHyperOctreeContourFilter *	SafeDownCast (vtkObject *o)
static vtkHyperOctreeContourFilter *	New ()
Protected Member Functions
	vtkHyperOctreeContourFilter ()
	~vtkHyperOctreeContourFilter ()
virtual int	RequestData (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
virtual int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )
virtual int	FillInputPortInformation (int port, vtkInformation *info)
void	ContourNode ()
double	ComputePointValue (int ptIndices[3])
void	ContourNode1D ()
Protected Attributes
vtkContourValues *	ContourValues
vtkIncrementalPointLocator *	Locator
vtkIdList *	CellPts
vtkHyperOctree *	Input
vtkPolyData *	Output
vtkCellArray *	NewVerts
vtkCellArray *	NewLines
vtkCellArray *	NewPolys
vtkCellData *	InCD
vtkPointData *	InPD
vtkCellData *	OutCD
vtkPointData *	OutPD
vtkOrderedTriangulator *	Triangulator
vtkHyperOctreeCursor *	Sibling
vtkDoubleArray *	CellScalars
vtkTetra *	Tetra
vtkDoubleArray *	TetScalars
vtkPolygon *	Polygon
vtkHyperOctreeCursor *	Cursor
vtkHyperOctreeCursor *	NeighborCursor
vtkIdType	CellTypeCounter [65536]
vtkIdType	TotalCounter
vtkIdType	TemplateCounter
vtkDataArray *	InScalars
vtkHyperOctreeContourPointsGrabber *	Grabber
vtkDoubleArray *	PointScalars
int	SortBy
int	Iter
vtkLine *	Line
double	LeftValue
double	LeftCoord
Friends
class	vtkHyperOctreeContourPointsGrabber

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkHyperOctreeContourFilter::Superclass

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 73 of file vtkHyperOctreeContourFilter.h.

Constructor & Destructor Documentation

vtkHyperOctreeContourFilter::vtkHyperOctreeContourFilter ( ) [protected]

vtkHyperOctreeContourFilter::~vtkHyperOctreeContourFilter ( ) [protected]

Member Function Documentation

virtual const char* vtkHyperOctreeContourFilter::GetClassName ( ) [virtual]

Reimplemented from vtkPolyDataAlgorithm.

static int vtkHyperOctreeContourFilter::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 vtkPolyDataAlgorithm.

virtual int vtkHyperOctreeContourFilter::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 vtkPolyDataAlgorithm.

static vtkHyperOctreeContourFilter* vtkHyperOctreeContourFilter::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkPolyDataAlgorithm.

void vtkHyperOctreeContourFilter::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 vtkPolyDataAlgorithm.

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

Construct object with initial range (0,1) and single contour value of 0.0.

Reimplemented from vtkPolyDataAlgorithm.

void vtkHyperOctreeContourFilter::SetValue	(	int	i,
		double	value
	)			`[inline]`

Methods to set / get contour values.

Set a particular contour value at contour number i. The index i ranges between 0<=i<NumberOfContours.

Definition at line 85 of file vtkHyperOctreeContourFilter.h.

double vtkHyperOctreeContourFilter::GetValue ( int i ) [inline]

Get the ith contour value.

Definition at line 93 of file vtkHyperOctreeContourFilter.h.

double* vtkHyperOctreeContourFilter::GetValues ( ) [inline]

Get a pointer to an array of contour values. There will be GetNumberOfContours() values in the list.

Definition at line 102 of file vtkHyperOctreeContourFilter.h.

void vtkHyperOctreeContourFilter::GetValues ( double * contourValues ) [inline]

Fill a supplied list with contour values. There will be GetNumberOfContours() values in the list. Make sure you allocate enough memory to hold the list.

Definition at line 112 of file vtkHyperOctreeContourFilter.h.

void vtkHyperOctreeContourFilter::SetNumberOfContours ( int number ) [inline]

Set the number of contours to place into the list. You only really need to use this method to reduce list size. The method SetValue() will automatically increase list size as needed.

Definition at line 122 of file vtkHyperOctreeContourFilter.h.

int vtkHyperOctreeContourFilter::GetNumberOfContours ( ) [inline]

Get the number of contours in the list of contour values.

Definition at line 130 of file vtkHyperOctreeContourFilter.h.

void vtkHyperOctreeContourFilter::GenerateValues	(	int	numContours,
		double	range[2]
	)			`[inline]`

Generate numContours equally spaced contour values between specified range. Contour values will include min/max range values.

Definition at line 139 of file vtkHyperOctreeContourFilter.h.

void vtkHyperOctreeContourFilter::GenerateValues	(	int	numContours,
		double	rangeStart,
		double	rangeEnd
	)			`[inline]`

Generate numContours equally spaced contour values between specified range. Contour values will include min/max range values.

Definition at line 148 of file vtkHyperOctreeContourFilter.h.

unsigned long vtkHyperOctreeContourFilter::GetMTime ( ) [virtual]

Modified GetMTime Because we delegate to vtkContourValues

Reimplemented from vtkObject.

void vtkHyperOctreeContourFilter::SetLocator ( vtkIncrementalPointLocator * locator )

Set / get a spatial locator for merging points. By default, an instance of vtkMergePoints is used.

virtual vtkIncrementalPointLocator* vtkHyperOctreeContourFilter::GetLocator ( ) [virtual]

Set / get a spatial locator for merging points. By default, an instance of vtkMergePoints is used.

void vtkHyperOctreeContourFilter::CreateDefaultLocator ( )

Create default locator. Used to create one when none is specified. The locator is used to merge coincident points.

virtual int vtkHyperOctreeContourFilter::RequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)			`[protected, virtual]`

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

virtual int vtkHyperOctreeContourFilter::RequestUpdateExtent	(	vtkInformation *	,
		vtkInformationVector **	,
		vtkInformationVector *
	)			`[protected, virtual]`

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

virtual int vtkHyperOctreeContourFilter::FillInputPortInformation	(	int	port,
		vtkInformation *	info
	)			`[protected, virtual]`

Fill the input port information objects for this algorithm. This is invoked by the first call to GetInputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkPolyDataAlgorithm.

void vtkHyperOctreeContourFilter::ContourNode ( ) [protected]

Do the recursive contour of the node pointed by Cursor.

double vtkHyperOctreeContourFilter::ComputePointValue ( int ptIndices[3] ) [protected]

(i,j,k) are point coordinates at last level

void vtkHyperOctreeContourFilter::ContourNode1D ( ) [protected]