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vtkScalarBarActor Class Reference

#include <vtkScalarBarActor.h>

Inheritance diagram for vtkScalarBarActor:

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Collaboration diagram for vtkScalarBarActor:

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List of all members.

Detailed Description

Create a scalar bar with labels.

vtkScalarBarActor creates a scalar bar with annotation text. A scalar bar is a legend that indicates to the viewer the correspondence between color value and data value. The legend consists of a rectangular bar made of rectangular pieces each colored a constant value. Since vtkScalarBarActor is a subclass of vtkActor2D, it is drawn in the image plane (i.e., in the renderer's viewport) on top of the 3D graphics window.

To use vtkScalarBarActor you must associate a vtkScalarsToColors (or subclass) with it. The lookup table defines the colors and the range of scalar values used to map scalar data. Typically, the number of colors shown in the scalar bar is not equal to the number of colors in the lookup table, in which case sampling of the lookup table is performed.

Other optional capabilities include specifying the fraction of the viewport size (both x and y directions) which will control the size of the scalar bar and the number of annotation labels. The actual position of the scalar bar on the screen is controlled by using the vtkActor2D::SetPosition() method (by default the scalar bar is centered in the viewport). Other features include the ability to orient the scalar bar horizontally of vertically and controlling the format (printf style) with which to print the labels on the scalar bar. Also, the vtkScalarBarActor's property is applied to the scalar bar and annotation (including layer, and compositing operator).

Set the text property/attributes of the title and the labels through the vtkTextProperty objects associated to this actor.

Warning:
If a vtkLogLookupTable is specified as the lookup table to use, then the labels are created using a logarithmic scale.
See also:
vtkActor2D vtkTextProperty vtkTextMapper vtkPolyDataMapper2D
Tests:
vtkScalarBarActor (Tests)

Definition at line 72 of file vtkScalarBarActor.h.
int RenderOpaqueGeometry (vtkViewport *viewport)
int RenderTranslucentGeometry (vtkViewport *)
int RenderOverlay (vtkViewport *viewport)
static vtkScalarBarActorNew ()

Public Types

typedef vtkActor2D Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
void ShallowCopy (vtkProp *prop)
virtual void ReleaseGraphicsResources (vtkWindow *)
virtual void SetLookupTable (vtkScalarsToColors *)
virtual vtkScalarsToColorsGetLookupTable ()
virtual void SetMaximumNumberOfColors (int)
virtual int GetMaximumNumberOfColors ()
virtual void SetNumberOfLabels (int)
virtual int GetNumberOfLabels ()
virtual void SetOrientation (int)
virtual int GetOrientation ()
void SetOrientationToHorizontal ()
void SetOrientationToVertical ()
virtual void SetTitleTextProperty (vtkTextProperty *p)
virtual vtkTextPropertyGetTitleTextProperty ()
virtual void SetLabelTextProperty (vtkTextProperty *p)
virtual vtkTextPropertyGetLabelTextProperty ()
virtual void SetLabelFormat (const char *)
virtual char * GetLabelFormat ()
virtual void SetTitle (const char *)
virtual char * GetTitle ()

Static Public Member Functions

static int IsTypeOf (const char *type)
static vtkScalarBarActorSafeDownCast (vtkObject *o)

Protected Member Functions

 vtkScalarBarActor ()
 ~vtkScalarBarActor ()
virtual void AllocateAndSizeLabels (int *labelSize, int *size, vtkViewport *viewport, double *range)

Protected Attributes

vtkScalarsToColorsLookupTable
vtkTextPropertyTitleTextProperty
vtkTextPropertyLabelTextProperty
int MaximumNumberOfColors
int NumberOfLabels
int NumberOfLabelsBuilt
int Orientation
char * Title
char * LabelFormat
vtkTextMapper ** TextMappers


Member Typedef Documentation

typedef vtkActor2D vtkScalarBarActor::Superclass
 

Reimplemented from vtkActor2D.

Definition at line 75 of file vtkScalarBarActor.h.


Constructor & Destructor Documentation

vtkScalarBarActor::vtkScalarBarActor  )  [protected]
 

vtkScalarBarActor::~vtkScalarBarActor  )  [protected]
 


Member Function Documentation

virtual const char* vtkScalarBarActor::GetClassName  )  [virtual]
 

Reimplemented from vtkActor2D.

static int vtkScalarBarActor::IsTypeOf const char *  type  )  [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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkActor2D.

virtual int vtkScalarBarActor::IsA const char *  type  )  [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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkActor2D.

static vtkScalarBarActor* vtkScalarBarActor::SafeDownCast vtkObject o  )  [static]
 

Reimplemented from vtkActor2D.

void vtkScalarBarActor::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 vtkActor2D.

static vtkScalarBarActor* vtkScalarBarActor::New  )  [static]
 

Instantiate object with 64 maximum colors; 5 labels; %-#6.3g label format, no title, and vertical orientation. The initial scalar bar size is (0.05 x 0.8) of the viewport size.

Reimplemented from vtkActor2D.

int vtkScalarBarActor::RenderOpaqueGeometry vtkViewport viewport  )  [virtual]
 

Draw the scalar bar and annotation text to the screen.

Reimplemented from vtkActor2D.

int vtkScalarBarActor::RenderTranslucentGeometry vtkViewport  )  [inline, virtual]
 

Draw the scalar bar and annotation text to the screen.

Reimplemented from vtkActor2D.

Definition at line 86 of file vtkScalarBarActor.h.

int vtkScalarBarActor::RenderOverlay vtkViewport viewport  )  [virtual]
 

Draw the scalar bar and annotation text to the screen.

Reimplemented from vtkActor2D.

virtual void vtkScalarBarActor::ReleaseGraphicsResources vtkWindow  )  [virtual]
 

Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release.

Reimplemented from vtkActor2D.

virtual void vtkScalarBarActor::SetLookupTable vtkScalarsToColors  )  [virtual]
 

Set/Get the vtkLookupTable to use. The lookup table specifies the number of colors to use in the table (if not overridden), as well as the scalar range.

virtual vtkScalarsToColors* vtkScalarBarActor::GetLookupTable  )  [virtual]
 

Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release.

virtual void vtkScalarBarActor::SetMaximumNumberOfColors int   )  [virtual]
 

Set/Get the maximum number of scalar bar segments to show. This may differ from the number of colors in the lookup table, in which case the colors are samples from the lookup table.

virtual int vtkScalarBarActor::GetMaximumNumberOfColors  )  [virtual]
 

Set/Get the maximum number of scalar bar segments to show. This may differ from the number of colors in the lookup table, in which case the colors are samples from the lookup table.

virtual void vtkScalarBarActor::SetNumberOfLabels int   )  [virtual]
 

Set/Get the number of annotation labels to show.

virtual int vtkScalarBarActor::GetNumberOfLabels  )  [virtual]
 

Set/Get the number of annotation labels to show.

virtual void vtkScalarBarActor::SetOrientation int   )  [virtual]
 

Control the orientation of the scalar bar.

virtual int vtkScalarBarActor::GetOrientation  )  [virtual]
 

Control the orientation of the scalar bar.

void vtkScalarBarActor::SetOrientationToHorizontal  )  [inline]
 

Control the orientation of the scalar bar.

Definition at line 121 of file vtkScalarBarActor.h.

References VTK_ORIENT_HORIZONTAL.

void vtkScalarBarActor::SetOrientationToVertical  )  [inline]
 

Control the orientation of the scalar bar.

Definition at line 123 of file vtkScalarBarActor.h.

References VTK_ORIENT_VERTICAL.

virtual void vtkScalarBarActor::SetTitleTextProperty vtkTextProperty p  )  [virtual]
 

Set/Get the title text property.

virtual vtkTextProperty* vtkScalarBarActor::GetTitleTextProperty  )  [virtual]
 

Set/Get the title text property.

virtual void vtkScalarBarActor::SetLabelTextProperty vtkTextProperty p  )  [virtual]
 

Set/Get the labels text property.

virtual vtkTextProperty* vtkScalarBarActor::GetLabelTextProperty  )  [virtual]
 

Set/Get the labels text property.

virtual void vtkScalarBarActor::SetLabelFormat const char *   )  [virtual]
 

Set/Get the format with which to print the labels on the scalar bar.

virtual char* vtkScalarBarActor::GetLabelFormat  )  [virtual]
 

Set/Get the format with which to print the labels on the scalar bar.

virtual void vtkScalarBarActor::SetTitle const char *   )  [virtual]
 

Set/Get the title of the scalar bar actor,

virtual char* vtkScalarBarActor::GetTitle  )  [virtual]
 

Set/Get the title of the scalar bar actor,

void vtkScalarBarActor::ShallowCopy vtkProp prop  )  [virtual]
 

Shallow copy of a scalar bar actor. Overloads the virtual vtkProp method.

Reimplemented from vtkActor2D.

virtual void vtkScalarBarActor::AllocateAndSizeLabels int *  labelSize,
int *  size,
vtkViewport viewport,
double *  range
[protected, virtual]
 


Member Data Documentation

vtkScalarsToColors* vtkScalarBarActor::LookupTable [protected]
 

Definition at line 158 of file vtkScalarBarActor.h.

vtkTextProperty* vtkScalarBarActor::TitleTextProperty [protected]
 

Definition at line 159 of file vtkScalarBarActor.h.

vtkTextProperty* vtkScalarBarActor::LabelTextProperty [protected]
 

Definition at line 160 of file vtkScalarBarActor.h.

int vtkScalarBarActor::MaximumNumberOfColors [protected]
 

Definition at line 162 of file vtkScalarBarActor.h.

int vtkScalarBarActor::NumberOfLabels [protected]
 

Definition at line 163 of file vtkScalarBarActor.h.

int vtkScalarBarActor::NumberOfLabelsBuilt [protected]
 

Definition at line 164 of file vtkScalarBarActor.h.

int vtkScalarBarActor::Orientation [protected]
 

Definition at line 165 of file vtkScalarBarActor.h.

char* vtkScalarBarActor::Title [protected]
 

Definition at line 166 of file vtkScalarBarActor.h.

char* vtkScalarBarActor::LabelFormat [protected]
 

Definition at line 167 of file vtkScalarBarActor.h.

vtkTextMapper** vtkScalarBarActor::TextMappers [protected]
 

Definition at line 169 of file vtkScalarBarActor.h.


The documentation for this class was generated from the following file:
Generated on Tue Jan 22 00:15:20 2008 for VTK by  doxygen 1.4.3-20050530