vtkContextBufferId Class Reference

2D array of ids, used for picking. More...

#include <vtkContextBufferId.h>

Inheritance diagram for vtkContextBufferId:

Collaboration diagram for vtkContextBufferId:

List of all members.

Public Types
typedef vtkAbstractContextBufferId	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkContextBufferId *	NewInstance () const
virtual void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	Allocate ()
virtual bool	IsAllocated () const
virtual vtkIdType	GetPickedItem (int x, int y)
virtual void	SetValues (int srcXmin, int srcYmin)
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkContextBufferId *	SafeDownCast (vtkObjectBase *o)
static vtkContextBufferId *	New ()
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkContextBufferId ()
virtual	~vtkContextBufferId ()
int	GetValue (vtkIdType i)
void	SetValue (vtkIdType i, int value)
Protected Attributes
vtkIntArray *	IdArray

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Detailed Description

2D array of ids, used for picking.

An 2D array where each element is the id of an entity drawn at the given pixel.

Definition at line 32 of file vtkContextBufferId.h.

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Member Typedef Documentation

typedef vtkAbstractContextBufferId vtkContextBufferId::Superclass

Reimplemented from vtkAbstractContextBufferId.

Definition at line 35 of file vtkContextBufferId.h.

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Constructor & Destructor Documentation

vtkContextBufferId::vtkContextBufferId

(

)

[protected]

virtual vtkContextBufferId::~vtkContextBufferId

(

)

[protected, virtual]

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Member Function Documentation

static int vtkContextBufferId::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 vtkAbstractContextBufferId.

virtual int vtkContextBufferId::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 vtkAbstractContextBufferId.

static vtkContextBufferId* vtkContextBufferId::SafeDownCast

(

vtkObjectBase *

o

)

[static]

Reimplemented from vtkAbstractContextBufferId.

virtual vtkObjectBase* vtkContextBufferId::NewInstanceInternal

(

)

const [protected, virtual]

Reimplemented from vtkAbstractContextBufferId.

vtkContextBufferId* vtkContextBufferId::NewInstance

(

)

const

Reimplemented from vtkAbstractContextBufferId.

virtual void vtkContextBufferId::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 vtkAbstractContextBufferId.

static vtkContextBufferId* vtkContextBufferId::New

(

)

[static]

Creates a 2D Painter object.

Reimplemented from vtkObject.

virtual void vtkContextBufferId::Allocate

(

)

[virtual]

Allocate the memory for at least Width*Height elements.

Precondition:

positive_width: GetWidth()>0

positive_height: GetHeight()>0

Implements vtkAbstractContextBufferId.

virtual bool vtkContextBufferId::IsAllocated

(

)

const [virtual]

Tell if the buffer has been allocated.

Implements vtkAbstractContextBufferId.

virtual void vtkContextBufferId::SetValues	(	int	srcXmin,
		int	srcYmin
	)		[virtual]

Copy the contents of the current read buffer to the internal array starting at lower left corner of the framebuffer (srcXmin,srcYmin).

Precondition:

is_allocated: this->IsAllocated()

Implements vtkAbstractContextBufferId.

virtual vtkIdType vtkContextBufferId::GetPickedItem	(	int	x,
		int	y
	)		[virtual]

Return item under abscissa x and ordinate y. Abscissa go from left to right. Ordinate go from bottom to top. The return value is -1 if there is no item.

Precondition:

is_allocated: IsAllocated()

Postcondition:

valid_result: result>=-1

Implements vtkAbstractContextBufferId.

void vtkContextBufferId::SetValue	(	vtkIdType	i,
		int	value
	)		[protected]

Set the value at index `i'.

Precondition:

is_allocated: this->IsAllocated()

valid_i: i>=0 i<this->GetWidth()*this->GetHeight()

Postcondition:

is_set: this->GetValue(i)==value

int vtkContextBufferId::GetValue

(

vtkIdType

i

)

[protected]

Get the value at index `i'.

Precondition:

is_allocated: this->IsAllocated()

valid_i: i>=0 i<this->GetWidth()*this->GetHeight()

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Member Data Documentation

vtkIntArray* vtkContextBufferId::IdArray [protected]

Definition at line 78 of file vtkContextBufferId.h.

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

• dox/Rendering/Context2D/vtkContextBufferId.h