estimate volume, area, shape index of triangle mesh More...

#include <vtkMassProperties.h>

Inheritance diagram for vtkMassProperties:

Collaboration diagram for vtkMassProperties:

Public Types
typedef vtkPolyDataAlgorithm	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkMassProperties *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
double	GetVolume ()
double	GetVolumeProjected ()
double	GetSurfaceArea ()
double	GetMinCellArea ()
double	GetMaxCellArea ()

double	GetVolumeX ()
double	GetVolumeY ()
double	GetVolumeZ ()

double	GetKx ()
double	GetKy ()
double	GetKz ()

double	GetNormalizedShapeIndex ()
Static Public Member Functions
static vtkMassProperties *	New ()
static int	IsTypeOf (const char *type)
static vtkMassProperties *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkMassProperties ()
	~vtkMassProperties ()
virtual int	RequestData (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
Protected Attributes
double	SurfaceArea
double	MinCellArea
double	MaxCellArea
double	Volume
double	VolumeProjected
double	VolumeX
double	VolumeY
double	VolumeZ
double	Kx
double	Ky
double	Kz
double	NormalizedShapeIndex

Detailed Description

estimate volume, area, shape index of triangle mesh

vtkMassProperties estimates the volume, the surface area, and the normalized shape index of a triangle mesh. The algorithm implemented here is based on the discrete form of the divergence theorem. The general assumption here is that the model is of closed surface. For more details see the following reference (Alyassin A.M. et al, "Evaluation of new algorithms for the interactive measurement of surface area and volume", Med Phys 21(6) 1994.).

Warning:: Currently only triangles are processed. Use vtkTriangleFilter to convert any strips or polygons to triangles.

See also:: vtkTriangleFilter

Tests:: vtkMassProperties (Tests)

Definition at line 44 of file vtkMassProperties.h.

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkMassProperties::Superclass

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 50 of file vtkMassProperties.h.

Constructor & Destructor Documentation

vtkMassProperties::vtkMassProperties ( ) [protected]

vtkMassProperties::~vtkMassProperties ( ) [protected]

Member Function Documentation

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

Constructs with initial values of zero.

Reimplemented from vtkPolyDataAlgorithm.

static int vtkMassProperties::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 vtkMassProperties::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 vtkMassProperties* vtkMassProperties::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkPolyDataAlgorithm.

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

Reimplemented from vtkPolyDataAlgorithm.

vtkMassProperties* vtkMassProperties::NewInstance ( ) const

Reimplemented from vtkPolyDataAlgorithm.

void vtkMassProperties::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.

double vtkMassProperties::GetVolume ( ) [inline]

Compute and return the volume.

Definition at line 54 of file vtkMassProperties.h.

double vtkMassProperties::GetVolumeProjected ( ) [inline]

Compute and return the projected volume. Typically you should compare this volume to the value returned by GetVolume if you get an error (GetVolume()-GetVolumeProjected())*10000 that is greater than GetVolume() this should identify a problem: * Either the polydata is not closed * Or the polydata contains triangle that are flipped

Definition at line 61 of file vtkMassProperties.h.

double vtkMassProperties::GetVolumeX ( ) [inline]

Compute and return the volume projected on to each axis aligned plane.

Definition at line 66 of file vtkMassProperties.h.

double vtkMassProperties::GetVolumeY ( ) [inline]

Compute and return the volume projected on to each axis aligned plane.

Definition at line 67 of file vtkMassProperties.h.

double vtkMassProperties::GetVolumeZ ( ) [inline]

Compute and return the volume projected on to each axis aligned plane.

Definition at line 68 of file vtkMassProperties.h.

double vtkMassProperties::GetKx ( ) [inline]

Compute and return the weighting factors for the maximum unit normal component (MUNC).

Definition at line 74 of file vtkMassProperties.h.

double vtkMassProperties::GetKy ( ) [inline]

Compute and return the weighting factors for the maximum unit normal component (MUNC).

Definition at line 75 of file vtkMassProperties.h.

double vtkMassProperties::GetKz ( ) [inline]

Compute and return the weighting factors for the maximum unit normal component (MUNC).

Definition at line 76 of file vtkMassProperties.h.

double vtkMassProperties::GetSurfaceArea ( ) [inline]

Compute and return the area.

Definition at line 80 of file vtkMassProperties.h.

double vtkMassProperties::GetMinCellArea ( ) [inline]

Compute and return the min cell area.

Definition at line 83 of file vtkMassProperties.h.

double vtkMassProperties::GetMaxCellArea ( ) [inline]

Compute and return the max cell area.

Definition at line 86 of file vtkMassProperties.h.

double vtkMassProperties::GetNormalizedShapeIndex ( ) [inline]

Compute and return the normalized shape index. This characterizes the deviation of the shape of an object from a sphere. A sphere's NSI is one. This number is always >= 1.0.

Definition at line 92 of file vtkMassProperties.h.

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