vtkPointPicker Class Reference

#include <vtkPointPicker.h>

Inheritance diagram for vtkPointPicker:

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Collaboration diagram for vtkPointPicker:

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List of all members.

Detailed Description

select a point by shooting a ray into a graphics window

vtkPointPicker is used to select a point by shooting a ray into a graphics window and intersecting with actor's defining geometry - specifically its points. Beside returning coordinates, actor, and mapper, vtkPointPicker returns the id of the point projecting closest onto the ray (within the specified tolerance). Ties are broken (i.e., multiple points all projecting within the tolerance along the pick ray) by choosing the point closest to the ray.

See also:: vtkPicker vtkCellPicker.

Tests:: vtkPointPicker (Tests)

Definition at line 40 of file vtkPointPicker.h.


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

virtual vtkIdType	GetPointId ()
Static Public Member Functions
static vtkPointPicker *	New ()
static int	IsTypeOf (const char *type)
static vtkPointPicker *	SafeDownCast (vtkObject *o)
Protected Member Functions
	vtkPointPicker ()
	~vtkPointPicker ()
double	IntersectWithLine (double p1[3], double p2[3], double tol, vtkAssemblyPath path, vtkProp3D p, vtkAbstractMapper3D *m)
void	Initialize ()
Protected Attributes
vtkIdType	PointId

Member Typedef Documentation

typedef vtkPicker vtkPointPicker::Superclass

Reimplemented from vtkPicker.

Definition at line 44 of file vtkPointPicker.h.

Constructor & Destructor Documentation

vtkPointPicker::vtkPointPicker ( ) [protected]

vtkPointPicker::~vtkPointPicker ( ) [inline, protected]

Definition at line 54 of file vtkPointPicker.h.

Member Function Documentation

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

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkPicker.

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

Reimplemented from vtkPicker.

static int vtkPointPicker::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 vtkPicker.

virtual int vtkPointPicker::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 vtkPicker.

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

Reimplemented from vtkPicker.

void vtkPointPicker::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 vtkPicker.

virtual vtkIdType vtkPointPicker::GetPointId ( ) [virtual]

Get the id of the picked point. If PointId = -1, nothing was picked.

double vtkPointPicker::IntersectWithLine	(	double	p1[3],
		double	p2[3],
		double	tol,
		vtkAssemblyPath *	path,
		vtkProp3D *	p,
		vtkAbstractMapper3D *	m
	)			`[protected, virtual]`