a combination of vtkColorTransferFunction and vtkLookupTable. More...

#include <vtkDiscretizableColorTransferFunction.h>

Inheritance diagram for vtkDiscretizableColorTransferFunction:

Collaboration diagram for vtkDiscretizableColorTransferFunction:

Public Types
typedef vtkColorTransferFunction	Superclass

Public Types inherited from vtkColorTransferFunction
typedef vtkScalarsToColors	Superclass

Public Types inherited from vtkScalarsToColors
enum	VectorModes { MAGNITUDE =0, COMPONENT =1, RGBCOLORS =2 }

typedef vtkObject	Superclass

Public Member Functions
virtual int	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

vtkDiscretizableColorTransferFunction *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)
	Print method for vtkColorTransferFunction. More...

int	IsOpaque ()
	Returns the negation of EnableOpacityMapping. More...

void	SetIndexedColor (unsigned int index, const double rgb[3])
	Add colors to use when IndexedLookup is true. More...

void	SetIndexedColor (unsigned int index, double r, double g, double b)

virtual void	GetIndexedColor (vtkIdType i, double rgba[4])
	Get the "indexed color" assigned to an index. More...

virtual void	Build ()
	Generate discretized lookup table, if applicable. More...

virtual unsigned char *	MapValue (double v)
	Map one value through the lookup table and return a color defined as a RGBA unsigned char tuple (4 bytes). More...

virtual void	GetColor (double v, double rgb[3])
	Map one value through the lookup table and return the color as an RGB array of doubles between 0 and 1. More...

virtual double	GetOpacity (double v)
	Return the opacity of a given scalar. More...

double *	GetRGBPoints ()
	Returns the (x, r, g, b) values as an array. More...

virtual void	SetAlpha (double alpha)
	Specify an additional opacity (alpha) value to blend with. More...

virtual int	UsingLogScale ()
	This should return 1 if the subclass is using log scale for mapping scalars to colors. More...

virtual vtkIdType	GetNumberOfAvailableColors ()
	Get the number of available colors for mapping to. More...

virtual vtkMTimeType	GetMTime ()
	Overridden to include the ScalarOpacityFunction's MTime. More...


void	SetNumberOfIndexedColors (unsigned int count)
	Set the number of indexed colors. More...

unsigned int	GetNumberOfIndexedColors ()
	Set the number of indexed colors. More...


virtual void	SetDiscretize (int)
	Set if the values are to be mapped after discretization. More...

virtual int	GetDiscretize ()
	Set if the values are to be mapped after discretization. More...

virtual void	DiscretizeOn ()
	Set if the values are to be mapped after discretization. More...

virtual void	DiscretizeOff ()
	Set if the values are to be mapped after discretization. More...


virtual void	SetUseLogScale (int useLogScale)
	Get/Set if log scale must be used while mapping scalars to colors. More...

virtual int	GetUseLogScale ()
	Get/Set if log scale must be used while mapping scalars to colors. More...


virtual void	SetNumberOfValues (vtkIdType)
	Set the number of values i.e. More...

virtual vtkIdType	GetNumberOfValues ()
	Set the number of values i.e. More...


virtual vtkUnsignedCharArray *	MapScalars (vtkDataArray *scalars, int colorMode, int component)
	Internal methods that map a data array into a 4-component, unsigned char RGBA array. More...

virtual vtkUnsignedCharArray *	MapScalars (vtkAbstractArray *scalars, int colorMode, int component)
	Internal methods that map a data array into a 4-component, unsigned char RGBA array. More...


virtual void	SetNanColor (double r, double g, double b)
	Set the color to use when a NaN (not a number) is encountered. More...

virtual void	SetNanColor (double rgb[3])
	Set the color to use when a NaN (not a number) is encountered. More...


virtual void	SetScalarOpacityFunction (vtkPiecewiseFunction *function)
	Set/get the opacity function to use. More...

virtual vtkPiecewiseFunction *	GetScalarOpacityFunction () const
	Set/get the opacity function to use. More...


virtual void	SetEnableOpacityMapping (bool)
	Enable/disable the usage of the scalar opacity function. More...

virtual bool	GetEnableOpacityMapping ()
	Enable/disable the usage of the scalar opacity function. More...

virtual void	EnableOpacityMappingOn ()
	Enable/disable the usage of the scalar opacity function. More...

virtual void	EnableOpacityMappingOff ()
	Enable/disable the usage of the scalar opacity function. More...

Public Member Functions inherited from vtkColorTransferFunction
vtkColorTransferFunction *	NewInstance () const

void	DeepCopy (vtkScalarsToColors *f)
	Copy the contents from another object. More...

void	ShallowCopy (vtkColorTransferFunction *f)

int	GetSize ()
	How many nodes define this function? More...

void	RemoveAllPoints ()
	Remove all points. More...

double *	GetColor (double x)
	Returns an RGB color for the specified scalar value. More...

int	AdjustRange (double range[2])
	Remove all points out of the new range, and make sure there is a point at each end of that range. More...

void	BuildFunctionFromTable (double x1, double x2, int size, double *table)
	Construct a color transfer function from a table. More...

double *	GetDataPointer ()
	Returns a pointer to an array of all node values in an interleaved array with the layout [X1, R1, G1, B1, X2, R2, G2, B2, ..., Xn, Rn, Gn, Bn] where n is the number of nodes defining the transfer function. More...

void	FillFromDataPointer (int n, double *ptr)
	Defines the nodes from an array ptr with the layout [X1, R1, G1, B1, X2, R2, G2, B2, ..., Xn, Rn, Gn, Bn] where n is the number of nodes. More...

virtual void	MapScalarsThroughTable2 (void input, unsigned char output, int inputDataType, int numberOfValues, int inputIncrement, int outputIncrement)
	Map a set of scalars through the lookup table. More...

int	EstimateMinNumberOfSamples (double const &x1, double const &x2)
	Estimates the minimum size of a table such that it would correctly sample this function. More...

int	AddRGBPoint (double x, double r, double g, double b)
	Add/Remove a point to/from the function defined in RGB or HSV Return the index of the point (0 based), or -1 on error. More...

int	AddRGBPoint (double x, double r, double g, double b, double midpoint, double sharpness)
	Add/Remove a point to/from the function defined in RGB or HSV Return the index of the point (0 based), or -1 on error. More...

int	AddHSVPoint (double x, double h, double s, double v)
	Add/Remove a point to/from the function defined in RGB or HSV Return the index of the point (0 based), or -1 on error. More...

int	AddHSVPoint (double x, double h, double s, double v, double midpoint, double sharpness)
	Add/Remove a point to/from the function defined in RGB or HSV Return the index of the point (0 based), or -1 on error. More...

int	RemovePoint (double x)
	Add/Remove a point to/from the function defined in RGB or HSV Return the index of the point (0 based), or -1 on error. More...

void	AddRGBSegment (double x1, double r1, double g1, double b1, double x2, double r2, double g2, double b2)
	Add two points to the function and remove all the points between them. More...

void	AddHSVSegment (double x1, double h1, double s1, double v1, double x2, double h2, double s2, double v2)
	Add two points to the function and remove all the points between them. More...

double	GetRedValue (double x)
	Get the color components individually. More...

double	GetGreenValue (double x)
	Get the color components individually. More...

double	GetBlueValue (double x)
	Get the color components individually. More...

int	GetNodeValue (int index, double val[6])
	For the node specified by index, set/get the location (X), R, G, and B values, midpoint, and sharpness values at the node. More...

int	SetNodeValue (int index, double val[6])
	For the node specified by index, set/get the location (X), R, G, and B values, midpoint, and sharpness values at the node. More...

virtual double *	GetRange ()
	Returns min and max position of all function points. More...

virtual void	GetRange (double &, double &)
	Returns min and max position of all function points. More...

virtual void	GetRange (double[2])
	Returns min and max position of all function points. More...

void	GetTable (double x1, double x2, int n, double *table)
	Fills in a table of n colors mapped from values mapped with even spacing between x1 and x2, inclusive. More...

void	GetTable (double x1, double x2, int n, float *table)
	Fills in a table of n colors mapped from values mapped with even spacing between x1 and x2, inclusive. More...

const unsigned char *	GetTable (double x1, double x2, int n)
	Fills in a table of n colors mapped from values mapped with even spacing between x1 and x2, inclusive. More...

virtual void	SetClamping (int)
	Sets/gets whether clamping is used. More...

virtual int	GetClamping ()
	Sets/gets whether clamping is used. More...

virtual void	ClampingOn ()
	Sets/gets whether clamping is used. More...

virtual void	ClampingOff ()
	Sets/gets whether clamping is used. More...

virtual void	SetColorSpace (int)
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

void	SetColorSpaceToRGB ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

void	SetColorSpaceToHSV ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

void	SetColorSpaceToLab ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

void	SetColorSpaceToDiverging ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

virtual int	GetColorSpace ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

virtual void	SetHSVWrap (int)
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

virtual int	GetHSVWrap ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

virtual void	HSVWrapOn ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

virtual void	HSVWrapOff ()
	Set/Get the color space used for interpolation: RGB, HSV, CIELAB, or Diverging. More...

virtual void	SetScale (int)
	Set the type of scale to use, linear or logarithmic. More...

void	SetScaleToLinear ()
	Set the type of scale to use, linear or logarithmic. More...

void	SetScaleToLog10 ()
	Set the type of scale to use, linear or logarithmic. More...

virtual int	GetScale ()
	Set the type of scale to use, linear or logarithmic. More...

virtual double *	GetNanColor ()
	Set the RGB color to use when a NaN (not a number) is encountered. More...

virtual void	GetNanColor (double &, double &, double &)
	Set the RGB color to use when a NaN (not a number) is encountered. More...

virtual void	GetNanColor (double[3])
	Set the RGB color to use when a NaN (not a number) is encountered. More...

virtual void	SetBelowRangeColor (double, double, double)
	Set the color to use when a value below the range is encountered. More...

virtual void	SetBelowRangeColor (double[3])
	Set the color to use when a value below the range is encountered. More...

virtual double *	GetBelowRangeColor ()
	Set the color to use when a value below the range is encountered. More...

virtual void	GetBelowRangeColor (double &, double &, double &)
	Set the color to use when a value below the range is encountered. More...

virtual void	GetBelowRangeColor (double[3])
	Set the color to use when a value below the range is encountered. More...

virtual void	SetUseBelowRangeColor (int)
	Set whether the below range color should be used. More...

virtual int	GetUseBelowRangeColor ()
	Set whether the below range color should be used. More...

virtual void	UseBelowRangeColorOn ()
	Set whether the below range color should be used. More...

virtual void	UseBelowRangeColorOff ()
	Set whether the below range color should be used. More...

virtual void	SetAboveRangeColor (double, double, double)
	Set the color to use when a value above the range is encountered. More...

virtual void	SetAboveRangeColor (double[3])
	Set the color to use when a value above the range is encountered. More...

virtual double *	GetAboveRangeColor ()
	Set the color to use when a value above the range is encountered. More...

virtual void	GetAboveRangeColor (double &, double &, double &)
	Set the color to use when a value above the range is encountered. More...

virtual void	GetAboveRangeColor (double[3])
	Set the color to use when a value above the range is encountered. More...

virtual void	SetUseAboveRangeColor (int)
	Set whether the below range color should be used. More...

virtual int	GetUseAboveRangeColor ()
	Set whether the below range color should be used. More...

virtual void	UseAboveRangeColorOn ()
	Set whether the below range color should be used. More...

virtual void	UseAboveRangeColorOff ()
	Set whether the below range color should be used. More...

virtual void	SetAllowDuplicateScalars (int)
	Toggle whether to allow duplicate scalar values in the color transfer function (off by default). More...

virtual int	GetAllowDuplicateScalars ()
	Toggle whether to allow duplicate scalar values in the color transfer function (off by default). More...

virtual void	AllowDuplicateScalarsOn ()
	Toggle whether to allow duplicate scalar values in the color transfer function (off by default). More...

virtual void	AllowDuplicateScalarsOff ()
	Toggle whether to allow duplicate scalar values in the color transfer function (off by default). More...

Public Member Functions inherited from vtkScalarsToColors
vtkScalarsToColors *	NewInstance () const

double *	GetColor (double v)
	Map one value through the lookup table and return the color as an RGB array of doubles between 0 and 1. More...

double	GetLuminance (double x)
	Map one value through the lookup table and return the luminance 0.3red + 0.59green + 0.11*blue as a double between 0 and 1. More...

void	MapVectorsThroughTable (void input, unsigned char output, int inputDataType, int numberOfValues, int inputIncrement, int outputFormat, int vectorComponent, int vectorSize)
	Map vectors through the lookup table. More...

void	MapVectorsThroughTable (void input, unsigned char output, int inputDataType, int numberOfValues, int inputIncrement, int outputFormat)

void	MapScalarsThroughTable (vtkDataArray scalars, unsigned char output, int outputFormat)
	Map a set of scalars through the lookup table in a single operation. More...

void	MapScalarsThroughTable (vtkDataArray scalars, unsigned char output)

void	MapScalarsThroughTable (void input, unsigned char output, int inputDataType, int numberOfValues, int inputIncrement, int outputFormat)

virtual vtkIdType	SetAnnotation (vtkVariant value, vtkStdString annotation)
	Add a new entry (or change an existing entry) to the list of annotated values. More...

virtual vtkIdType	SetAnnotation (vtkStdString value, vtkStdString annotation)
	This variant of SetAnnotation accepts the value as a string so ParaView can treat annotations as string vector arrays. More...

vtkIdType	GetNumberOfAnnotatedValues ()
	Return the annotated value at a particular index in the list of annotations. More...

vtkVariant	GetAnnotatedValue (vtkIdType idx)
	Return the annotated value at a particular index in the list of annotations. More...

vtkStdString	GetAnnotation (vtkIdType idx)
	Return the annotation at a particular index in the list of annotations. More...

virtual void	GetAnnotationColor (const vtkVariant &val, double rgba[4])
	Obtain the color associated with a particular annotated value (or NanColor if unmatched). More...

vtkIdType	GetAnnotatedValueIndex (vtkVariant val)
	Return the index of the given value in the list of annotated values (or -1 if not present). More...

vtkIdType	GetAnnotatedValueIndexInternal (vtkVariant &val)
	Look up an index into the array of annotations given a value. More...

virtual bool	RemoveAnnotation (vtkVariant value)
	Remove an existing entry from the list of annotated values. More...

virtual void	ResetAnnotations ()
	Remove all existing values and their annotations. More...

void	SetRange (double rng[2])
	Sets/Gets the range of scalars that will be mapped. More...

virtual double	GetAlpha ()
	Specify an additional opacity (alpha) value to blend with. More...

virtual void	SetVectorMode (int)
	Change mode that maps vectors by magnitude vs. More...

virtual int	GetVectorMode ()
	Change mode that maps vectors by magnitude vs. More...

void	SetVectorModeToMagnitude ()
	Change mode that maps vectors by magnitude vs. More...

void	SetVectorModeToComponent ()
	Change mode that maps vectors by magnitude vs. More...

void	SetVectorModeToRGBColors ()
	Change mode that maps vectors by magnitude vs. More...

virtual void	SetVectorComponent (int)
	If the mapper does not select which component of a vector to map to colors, you can specify it here. More...

virtual int	GetVectorComponent ()
	If the mapper does not select which component of a vector to map to colors, you can specify it here. More...

virtual void	SetVectorSize (int)
	When mapping vectors, consider only the number of components selected by VectorSize to be part of the vector, and ignore any other components. More...

virtual int	GetVectorSize ()
	When mapping vectors, consider only the number of components selected by VectorSize to be part of the vector, and ignore any other components. More...

virtual void	SetAnnotations (vtkAbstractArray values, vtkStringArray annotations)
	Set a list of discrete values, either as a categorical set of values (when IndexedLookup is true) or as a set of annotations to add to a scalar array (when IndexedLookup is false). More...

virtual vtkAbstractArray *	GetAnnotatedValues ()
	Set a list of discrete values, either as a categorical set of values (when IndexedLookup is true) or as a set of annotations to add to a scalar array (when IndexedLookup is false). More...

virtual vtkStringArray *	GetAnnotations ()
	Set a list of discrete values, either as a categorical set of values (when IndexedLookup is true) or as a set of annotations to add to a scalar array (when IndexedLookup is false). More...

virtual void	SetIndexedLookup (int)
	Set/get whether the lookup table is for categorical or ordinal data. More...

virtual int	GetIndexedLookup ()
	Set/get whether the lookup table is for categorical or ordinal data. More...

virtual void	IndexedLookupOn ()
	Set/get whether the lookup table is for categorical or ordinal data. More...

virtual void	IndexedLookupOff ()
	Set/get whether the lookup table is for categorical or ordinal data. More...

template<>
unsigned char	ColorToUChar (double t)
	Specializations of vtkScalarsToColors::ColorToUChar Converts from a color in a floating point type in range 0.0-1.0 to a uchar in range 0-255. More...

template<>
unsigned char	ColorToUChar (float t)
	Specializations of vtkScalarsToColors::ColorToUChar Converts from a color in a floating point type in range 0.0-1.0 to a uchar in range 0-255. More...

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

bool	GetDebug ()
	Get the value of the debug flag. More...

void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...

virtual void	Modified ()
	Update the modification time for this object. More...

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	HasObserver (const char *event)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

int	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

int	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not. More...

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...

virtual void	Delete ()
	Delete a VTK object. More...

virtual void	FastDelete ()
	Delete a reference to this object. More...

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream. More...

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object). More...

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object). More...

int	GetReferenceCount ()
	Return the current reference count of this object. More...

void	SetReferenceCount (int)
	Sets the reference count. More...

void	PrintRevisions (ostream &)
	Legacy. More...

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

Static Public Member Functions
static vtkDiscretizableColorTransferFunction *	New ()

static int	IsTypeOf (const char *type)

static vtkDiscretizableColorTransferFunction *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkColorTransferFunction
static vtkColorTransferFunction *	New ()

static int	IsTypeOf (const char *type)

static vtkColorTransferFunction *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkScalarsToColors
static int	IsTypeOf (const char *type)

static vtkScalarsToColors *	SafeDownCast (vtkObjectBase *o)

static vtkScalarsToColors *	New ()

template<typename T >
static unsigned char	ColorToUChar (T t)
	Converts a color from numeric type T to uchar. More...

template<typename T >
static void	ColorToUChar (T t, unsigned char *dest)
	Converts a color from numeric type T to uchar. More...

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkDiscretizableColorTransferFunction ()

	~vtkDiscretizableColorTransferFunction ()

void	MapDataArrayToOpacity (vtkDataArray scalars, int component, vtkUnsignedCharArray colors)

Protected Member Functions inherited from vtkColorTransferFunction
	vtkColorTransferFunction ()

	~vtkColorTransferFunction ()

virtual void	SetRange (double, double)
	Set the range of scalars being mapped. More...

void	SetRange (double rng[2])

void	SortAndUpdateRange ()
	Internal method to sort the vector and update the Range whenever a node is added, edited or removed It always calls Modified(). More...

bool	UpdateRange ()
	Returns true if the range has been changed. More...

void	MovePoint (double oldX, double newX)
	Moves point from oldX to newX. More...

double	FindMinimumXDistance ()
	Traverses the nodes to find the minimum distance. More...

Protected Member Functions inherited from vtkScalarsToColors
	vtkScalarsToColors ()

	~vtkScalarsToColors () override

void	MapColorsToColors (void input, unsigned char output, int inputDataType, int numberOfValues, int numberOfComponents, int vectorSize, int outputFormat)
	An internal method that assumes that the input already has the right colors, and only remaps the range to [0,255] and pads to the desired output format. More...

vtkUnsignedCharArray *	ConvertToRGBA (vtkDataArray *colors, int numComp, int numTuples)
	An internal method used to convert a color array to RGBA. More...

void	MapVectorsToMagnitude (void input, double output, int inputDataType, int numberOfValues, int numberOfComponents, int vectorSize)
	An internal method for converting vectors to magnitudes, used as a preliminary step before doing magnitude mapping. More...

virtual vtkIdType	CheckForAnnotatedValue (vtkVariant value)
	Allocate annotation arrays if needed, then return the index of the given value or -1 if not present. More...

virtual void	UpdateAnnotatedValueMap ()
	Update the map from annotated values to indices in the array of annotations. More...

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)
	These methods allow a command to exclusively grab all events. More...

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events. More...

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
int	Discretize
	Flag indicating whether transfer function is discretized. More...

int	UseLogScale
	Flag indicating whether log scaling is to be used. More...

vtkIdType	NumberOfValues
	Number of values to use in discretized color map. More...

vtkLookupTable *	LookupTable
	Internal lookup table used for some aspects of the color mapping. More...

vtkTimeStamp	BuildTime

bool	EnableOpacityMapping

vtkSmartPointer< vtkPiecewiseFunction >	ScalarOpacityFunction

Protected Attributes inherited from vtkColorTransferFunction
vtkColorTransferFunctionInternals *	Internal

int	Clamping
	Determines the function value outside of defined points Zero = always return 0.0 outside of defined points One = clamp to the lowest value below defined points and highest value above defined points. More...

int	ColorSpace
	The color space in which interpolation is performed. More...

int	HSVWrap
	Specify if HSV is wrap or not. More...

int	Scale
	The color interpolation scale (linear or logarithmic). More...

double	NanColor [3]
	The color to use for not-a-number. More...

double	BelowRangeColor [3]
	The below-range color. More...

int	UseBelowRangeColor
	Flag indicating whether below-range color should be used. More...

double	AboveRangeColor [3]
	The above-range color. More...

int	UseAboveRangeColor
	Flag indicating whether below-range color should be used. More...

double *	Function
	Temporary array to store data from the nodes. More...

double	Range [2]
	The min and max node locations. More...

unsigned char	UnsignedCharRGBAValue [4]
	Temporary storage for an evaluated color (0 to 255 RGBA A=255) More...

int	AllowDuplicateScalars
	If on, the same scalar value may have more than one node assigned to it. More...

vtkTimeStamp	BuildTime

unsigned char *	Table

int	TableSize
	Temporary storage for the size of the table. More...

Protected Attributes inherited from vtkScalarsToColors
vtkAbstractArray *	AnnotatedValues

vtkStringArray *	Annotations

vtkInternalAnnotatedValueMap *	AnnotatedValueMap

int	IndexedLookup

double	Alpha

int	VectorMode

int	VectorComponent

int	VectorSize

int	UseMagnitude

unsigned char	RGBABytes [4]

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

a combination of vtkColorTransferFunction and vtkLookupTable.

This is a cross between a vtkColorTransferFunction and a vtkLookupTable selectively combining the functionality of both. This class is a vtkColorTransferFunction allowing users to specify the RGB control points that control the color transfer function. At the same time, by setting Discretize to 1 (true), one can force the transfer function to only have NumberOfValues discrete colors.

When IndexedLookup is true, this class behaves differently. The annotated values are considered to the be only valid values for which entries in the color table should be returned. The colors for annotated values are those specified using AddIndexedColors. Typically, there must be at least as many indexed colors specified as the annotations. For backwards compatibility, if no indexed-colors are specified, the colors in the lookup Table are assigned to annotated values by taking the modulus of their index in the list of annotations. If a scalar value is not present in AnnotatedValues, then NanColor will be used.

NOTE: One must call Build() after making any changes to the points in the ColorTransferFunction to ensure that the discrete and non-discrete versions match up.

Tests:: vtkDiscretizableColorTransferFunction (Tests)

Definition at line 56 of file vtkDiscretizableColorTransferFunction.h.

Member Typedef Documentation

typedef vtkColorTransferFunction vtkDiscretizableColorTransferFunction::Superclass

Definition at line 60 of file vtkDiscretizableColorTransferFunction.h.

Constructor & Destructor Documentation

vtkDiscretizableColorTransferFunction::vtkDiscretizableColorTransferFunction ( )

protected

vtkDiscretizableColorTransferFunction::~vtkDiscretizableColorTransferFunction ( )

protected

Member Function Documentation

static vtkDiscretizableColorTransferFunction* vtkDiscretizableColorTransferFunction::New ( )

static

static int vtkDiscretizableColorTransferFunction::IsTypeOf ( const char * type )

static

virtual int vtkDiscretizableColorTransferFunction::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 vtkColorTransferFunction.

static vtkDiscretizableColorTransferFunction* vtkDiscretizableColorTransferFunction::SafeDownCast ( vtkObjectBase * o )

static

virtual vtkObjectBase* vtkDiscretizableColorTransferFunction::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkColorTransferFunction.

vtkDiscretizableColorTransferFunction* vtkDiscretizableColorTransferFunction::NewInstance ( ) const

void vtkDiscretizableColorTransferFunction::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

virtual

Print method for vtkColorTransferFunction.

Reimplemented from vtkColorTransferFunction.

int vtkDiscretizableColorTransferFunction::IsOpaque ( )

virtual

Returns the negation of EnableOpacityMapping.

Reimplemented from vtkScalarsToColors.

void vtkDiscretizableColorTransferFunction::SetIndexedColor	(	unsigned int	index,
		const double	rgb[3]
	)

inline

Add colors to use when IndexedLookup is true.

SetIndexedColor() will automatically call SetNumberOfIndexedColors(index+1) if the current number of indexed colors is not sufficient for the specified index and all will be initialized to the RGB values passed to this call.

Definition at line 75 of file vtkDiscretizableColorTransferFunction.h.

void vtkDiscretizableColorTransferFunction::SetIndexedColor	(	unsigned int	index,
		double	r,
		double	g,
		double	b
	)

virtual void vtkDiscretizableColorTransferFunction::GetIndexedColor	(	vtkIdType	i,
		double	rgba[4]
	)

virtual

Get the "indexed color" assigned to an index.

The index is used in IndexedLookup mode to assign colors to annotations (in the order the annotations were set). Subclasses must implement this and interpret how to treat the index. vtkLookupTable simply returns GetTableValue(index % this->GetNumberOfTableValues()). vtkColorTransferFunction returns the color assocated with node index % this->GetSize().

Note that implementations must set the opacity (alpha) component of the color, even if they do not provide opacity values in their colormaps. In that case, alpha = 1 should be used.

Reimplemented from vtkColorTransferFunction.

void vtkDiscretizableColorTransferFunction::SetNumberOfIndexedColors ( unsigned int count )

Set the number of indexed colors.

These are used when IndexedLookup is true. If no indexed colors are specified, for backwards compatibility, this class reverts to using the RGBPoints for colors.

unsigned int vtkDiscretizableColorTransferFunction::GetNumberOfIndexedColors ( )

Set the number of indexed colors.

These are used when IndexedLookup is true. If no indexed colors are specified, for backwards compatibility, this class reverts to using the RGBPoints for colors.

virtual void vtkDiscretizableColorTransferFunction::Build ( )

virtual

Generate discretized lookup table, if applicable.

This method must be called after changes to the ColorTransferFunction otherwise the discretized version will be inconsistent with the non-discretized one.

Reimplemented from vtkScalarsToColors.

virtual void vtkDiscretizableColorTransferFunction::SetDiscretize ( int )

virtual

Set if the values are to be mapped after discretization.

The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.

virtual int vtkDiscretizableColorTransferFunction::GetDiscretize ( )

virtual

Set if the values are to be mapped after discretization.

The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.

virtual void vtkDiscretizableColorTransferFunction::DiscretizeOn ( )

virtual

Set if the values are to be mapped after discretization.

The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.

virtual void vtkDiscretizableColorTransferFunction::DiscretizeOff ( )

virtual

Set if the values are to be mapped after discretization.

The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.

virtual void vtkDiscretizableColorTransferFunction::SetUseLogScale ( int useLogScale )

virtual

Get/Set if log scale must be used while mapping scalars to colors.

The default is 0.

virtual int vtkDiscretizableColorTransferFunction::GetUseLogScale ( )

virtual

Get/Set if log scale must be used while mapping scalars to colors.

The default is 0.

virtual void vtkDiscretizableColorTransferFunction::SetNumberOfValues ( vtkIdType )

virtual

Set the number of values i.e.

colors to be generated in the discrete lookup table. This has no effect if Discretize is off. The default is 256.

virtual vtkIdType vtkDiscretizableColorTransferFunction::GetNumberOfValues ( )

virtual

Set the number of values i.e.

colors to be generated in the discrete lookup table. This has no effect if Discretize is off. The default is 256.

virtual unsigned char* vtkDiscretizableColorTransferFunction::MapValue ( double v )

virtual

Map one value through the lookup table and return a color defined as a RGBA unsigned char tuple (4 bytes).

Reimplemented from vtkColorTransferFunction.

virtual void vtkDiscretizableColorTransferFunction::GetColor	(	double	v,
		double	rgb[3]
	)

virtual

Map one value through the lookup table and return the color as an RGB array of doubles between 0 and 1.

Reimplemented from vtkColorTransferFunction.

virtual double vtkDiscretizableColorTransferFunction::GetOpacity ( double v )

virtual

Return the opacity of a given scalar.

Reimplemented from vtkScalarsToColors.

virtual vtkUnsignedCharArray* vtkDiscretizableColorTransferFunction::MapScalars	(	vtkDataArray *	scalars,
		int	colorMode,
		int	component
	)

virtual

Internal methods that map a data array into a 4-component, unsigned char RGBA array.

The color mode determines the behavior of mapping. If VTK_COLOR_MODE_DEFAULT is set, then unsigned char data arrays are treated as colors (and converted to RGBA if necessary); otherwise, the data is mapped through this instance of ScalarsToColors. The offset is used for data arrays with more than one component; it indicates which component to use to do the blending. When the component argument is -1, then the this object uses its own selected technique to change a vector into a scalar to map.

When IndexedLookup (inherited from vtkScalarsToColors) is true, the scalar opacity function is not used regardless of EnableOpacityMapping.

Reimplemented from vtkScalarsToColors.

virtual vtkUnsignedCharArray* vtkDiscretizableColorTransferFunction::MapScalars	(	vtkAbstractArray *	scalars,
		int	colorMode,
		int	component
	)

virtual

Internal methods that map a data array into a 4-component, unsigned char RGBA array.

The color mode determines the behavior of mapping. If VTK_COLOR_MODE_DEFAULT is set, then unsigned char data arrays are treated as colors (and converted to RGBA if necessary); otherwise, the data is mapped through this instance of ScalarsToColors. The offset is used for data arrays with more than one component; it indicates which component to use to do the blending. When the component argument is -1, then the this object uses its own selected technique to change a vector into a scalar to map.

When IndexedLookup (inherited from vtkScalarsToColors) is true, the scalar opacity function is not used regardless of EnableOpacityMapping.

Reimplemented from vtkScalarsToColors.

double* vtkDiscretizableColorTransferFunction::GetRGBPoints ( )

Returns the (x, r, g, b) values as an array.

vtkColorTransferFunction::GetDataPointer(). Retained for backwards compatibility.

Deprecated:: Use GetDataPointer() instead.

virtual void vtkDiscretizableColorTransferFunction::SetAlpha ( double alpha )

virtual

Specify an additional opacity (alpha) value to blend with.

Values != 1 modify the resulting color consistent with the requested form of the output. This is typically used by an actor in order to blend its opacity. Overridden to pass the alpha to the internal vtkLookupTable.

Reimplemented from vtkScalarsToColors.