VTK
|
map scalar values into colors via a lookup table More...
#include <vtkLookupTable.h>
Public Types | |
typedef vtkScalarsToColors | Superclass |
![]() | |
enum | VectorModes { MAGNITUDE =0, COMPONENT =1, RGBCOLORS =2 } |
typedef vtkObject | Superclass |
![]() | |
typedef vtkObjectBase | Superclass |
Public Member Functions | |
virtual int | IsA (const char *type) |
vtkLookupTable * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) |
virtual int | IsOpaque () |
int | Allocate (int sz=256, int ext=256) |
virtual void | Build () |
virtual void | ForceBuild () |
unsigned char * | GetNanColorAsUnsignedChars () |
unsigned char * | MapValue (double v) |
void | GetColor (double x, double rgb[3]) |
double | GetOpacity (double v) |
virtual vtkIdType | GetIndex (double v) |
virtual void | SetTableValue (vtkIdType indx, double rgba[4]) |
double * | GetTableValue (vtkIdType id) |
void | GetTableValue (vtkIdType id, double rgba[4]) |
unsigned char * | WritePointer (const vtkIdType id, const int number) |
void | DeepCopy (vtkScalarsToColors *lut) |
virtual vtkIdType | GetNumberOfAvailableColors () |
virtual void | GetIndexedColor (vtkIdType idx, double rgba[4]) |
virtual void | SetRamp (int) |
void | SetRampToLinear () |
void | SetRampToSCurve () |
void | SetRampToSQRT () |
virtual int | GetRamp () |
void | SetScale (int scale) |
void | SetScaleToLinear () |
void | SetScaleToLog10 () |
virtual int | GetScale () |
void | SetTableRange (double r[2]) |
virtual void | SetTableRange (double min, double max) |
virtual double * | GetTableRange () |
virtual void | GetTableRange (double data[2]) |
virtual void | SetHueRange (double, double) |
void | SetHueRange (double[2]) |
virtual double * | GetHueRange () |
virtual void | GetHueRange (double &, double &) |
virtual void | GetHueRange (double[2]) |
virtual void | SetSaturationRange (double, double) |
void | SetSaturationRange (double[2]) |
virtual double * | GetSaturationRange () |
virtual void | GetSaturationRange (double &, double &) |
virtual void | GetSaturationRange (double[2]) |
virtual void | SetValueRange (double, double) |
void | SetValueRange (double[2]) |
virtual double * | GetValueRange () |
virtual void | GetValueRange (double &, double &) |
virtual void | GetValueRange (double[2]) |
virtual void | SetAlphaRange (double, double) |
void | SetAlphaRange (double[2]) |
virtual double * | GetAlphaRange () |
virtual void | GetAlphaRange (double &, double &) |
virtual void | GetAlphaRange (double[2]) |
virtual void | SetNanColor (double, double, double, double) |
virtual void | SetNanColor (double[4]) |
virtual double * | GetNanColor () |
virtual void | GetNanColor (double &, double &, double &, double &) |
virtual void | GetNanColor (double[4]) |
void | SetNumberOfTableValues (vtkIdType number) |
vtkIdType | GetNumberOfTableValues () |
virtual void | SetTableValue (vtkIdType indx, double r, double g, double b, double a=1.0) |
unsigned char * | GetPointer (const vtkIdType id) |
double * | GetRange () |
void | SetRange (double min, double max) |
void | SetRange (double rng[2]) |
virtual void | SetNumberOfColors (vtkIdType) |
virtual vtkIdType | GetNumberOfColors () |
void | SetTable (vtkUnsignedCharArray *) |
virtual vtkUnsignedCharArray * | GetTable () |
void | MapScalarsThroughTable2 (void *input, unsigned char *output, int inputDataType, int numberOfValues, int inputIncrement, int outputIncrement) |
virtual int | UsingLogScale () |
![]() | |
vtkScalarsToColors * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) |
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. Does no pointer checks. Returns -1 when val not present. 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]) |
double * | GetColor (double v) |
double | GetLuminance (double x) |
virtual void | SetAlpha (double alpha) |
virtual double | GetAlpha () |
virtual vtkUnsignedCharArray * | MapScalars (vtkDataArray *scalars, int colorMode, int component) |
virtual void | SetVectorMode (int) |
virtual int | GetVectorMode () |
void | SetVectorModeToMagnitude () |
void | SetVectorModeToComponent () |
void | SetVectorModeToRGBColors () |
virtual void | SetVectorComponent (int) |
virtual int | GetVectorComponent () |
virtual void | SetVectorSize (int) |
virtual int | GetVectorSize () |
void | MapVectorsThroughTable (void *input, unsigned char *output, int inputDataType, int numberOfValues, int inputIncrement, int outputFormat, int vectorComponent, int vectorSize) |
void | MapVectorsThroughTable (void *input, unsigned char *output, int inputDataType, int numberOfValues, int inputIncrement, int outputFormat) |
void | MapScalarsThroughTable (vtkDataArray *scalars, unsigned char *output, int outputFormat) |
void | MapScalarsThroughTable (vtkDataArray *scalars, unsigned char *output) |
void | MapScalarsThroughTable (void *input, unsigned char *output, int inputDataType, int numberOfValues, int inputIncrement, int outputFormat) |
virtual vtkUnsignedCharArray * | ConvertUnsignedCharToRGBA (vtkUnsignedCharArray *colors, int numComp, int numTuples) |
virtual void | SetAnnotations (vtkAbstractArray *values, vtkStringArray *annotations) |
virtual vtkAbstractArray * | GetAnnotatedValues () |
virtual vtkStringArray * | GetAnnotations () |
virtual void | SetIndexedLookup (int) |
virtual int | GetIndexedLookup () |
virtual void | IndexedLookupOn () |
virtual void | IndexedLookupOff () |
![]() | |
vtkObject * | NewInstance () const |
virtual void | DebugOn () |
virtual void | DebugOff () |
unsigned char | GetDebug () |
void | SetDebug (unsigned char debugFlag) |
virtual void | Modified () |
virtual unsigned long | GetMTime () |
unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
vtkCommand * | GetCommand (unsigned long tag) |
void | RemoveObserver (vtkCommand *) |
void | RemoveObservers (unsigned long event, vtkCommand *) |
void | RemoveObservers (const char *event, vtkCommand *) |
int | HasObserver (unsigned long event, vtkCommand *) |
int | HasObserver (const char *event, vtkCommand *) |
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) |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f) |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
int | InvokeEvent (unsigned long event, void *callData) |
int | InvokeEvent (const char *event, void *callData) |
int | InvokeEvent (unsigned long event) |
int | InvokeEvent (const char *event) |
![]() | |
const char * | GetClassName () const |
virtual void | Delete () |
virtual void | FastDelete () |
void | Print (ostream &os) |
virtual void | Register (vtkObjectBase *o) |
virtual void | UnRegister (vtkObjectBase *o) |
void | SetReferenceCount (int) |
void | PrintRevisions (ostream &) |
virtual void | PrintHeader (ostream &os, vtkIndent indent) |
virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
int | GetReferenceCount () |
Static Public Member Functions | |
static vtkLookupTable * | New () |
static int | IsTypeOf (const char *type) |
static vtkLookupTable * | SafeDownCast (vtkObjectBase *o) |
static void | GetLogRange (const double range[2], double log_range[2]) |
static double | ApplyLogScale (double v, const double range[2], const double log_range[2]) |
![]() | |
static int | IsTypeOf (const char *type) |
static vtkScalarsToColors * | SafeDownCast (vtkObjectBase *o) |
static vtkScalarsToColors * | New () |
![]() | |
static int | IsTypeOf (const char *type) |
static vtkObject * | SafeDownCast (vtkObjectBase *o) |
static vtkObject * | New () |
static void | BreakOnError () |
static void | SetGlobalWarningDisplay (int val) |
static void | GlobalWarningDisplayOn () |
static void | GlobalWarningDisplayOff () |
static int | GetGlobalWarningDisplay () |
![]() | |
static int | IsTypeOf (const char *name) |
static vtkObjectBase * | New () |
Protected Member Functions | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkLookupTable (int sze=256, int ext=256) | |
~vtkLookupTable () | |
![]() | |
vtkScalarsToColors () | |
~vtkScalarsToColors () | |
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... | |
void | MapColorsToColors (void *input, unsigned char *output, int inputDataType, int numberOfValues, int numberOfComponents, int vectorSize, int outputFormat) |
void | MapVectorsToMagnitude (void *input, double *output, int inputDataType, int numberOfValues, int numberOfComponents, int vectorSize) |
![]() | |
vtkObject () | |
virtual | ~vtkObject () |
virtual void | RegisterInternal (vtkObjectBase *, int check) |
virtual void | UnRegisterInternal (vtkObjectBase *, int check) |
void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=NULL) |
void | InternalReleaseFocus () |
![]() | |
vtkObjectBase () | |
virtual | ~vtkObjectBase () |
virtual void | CollectRevisions (ostream &) |
virtual void | ReportReferences (vtkGarbageCollector *) |
vtkObjectBase (const vtkObjectBase &) | |
void | operator= (const vtkObjectBase &) |
Protected Attributes | |
vtkIdType | NumberOfColors |
vtkUnsignedCharArray * | Table |
double | TableRange [2] |
double | HueRange [2] |
double | SaturationRange [2] |
double | ValueRange [2] |
double | AlphaRange [2] |
double | NanColor [4] |
int | Scale |
int | Ramp |
vtkTimeStamp | InsertTime |
vtkTimeStamp | BuildTime |
double | RGBA [4] |
unsigned char | NanColorChar [4] |
int | OpaqueFlag |
vtkTimeStamp | OpaqueFlagBuildTime |
![]() | |
vtkAbstractArray * | AnnotatedValues |
vtkStringArray * | Annotations |
vtkInternalAnnotatedValueMap * | AnnotatedValueMap |
int | IndexedLookup |
double | Alpha |
int | VectorMode |
int | VectorComponent |
int | VectorSize |
int | UseMagnitude |
![]() | |
unsigned char | Debug |
vtkTimeStamp | MTime |
vtkSubjectHelper * | SubjectHelper |
![]() | |
int | ReferenceCount |
vtkWeakPointerBase ** | WeakPointers |
map scalar values into colors via a lookup table
vtkLookupTable is an object that is used by mapper objects to map scalar values into rgba (red-green-blue-alpha transparency) color specification, or rgba into scalar values. The color table can be created by direct insertion of color values, or by specifying hue, saturation, value, and alpha range and generating a table.
This class behaves differently depending on how IndexedLookup is set. When true, vtkLookupTable enters a mode for representing categorical color maps. By setting IndexedLookup to true, you indicate that the annotated values are the only valid values for which entries in the color table should be returned. The colors in the lookup Table are assigned to annotated values by taking the modulus of their index in the list of annotations. IndexedLookup changes the behavior of GetIndex, which in turn changes the way MapScalarsThroughTable2 behaves; when IndexedLookup is true, MapScalarsThroughTable2 will search for scalar values in AnnotatedValues and use the resulting index to determine the color. If a scalar value is not present in AnnotatedValues, then NanColor will be used.
Definition at line 64 of file vtkLookupTable.h.
Definition at line 71 of file vtkLookupTable.h.
|
protected |
|
protected |
|
static |
Construct with range=[0,1]; and hsv ranges set up for rainbow color table (from red to blue).
|
static |
|
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 vtkScalarsToColors.
|
static |
|
protectedvirtual |
Reimplemented from vtkScalarsToColors.
vtkLookupTable* vtkLookupTable::NewInstance | ( | ) | const |
|
virtual |
|
virtual |
Return true if all of the values defining the mapping have an opacity equal to 1. Default implementation return true.
Reimplemented from vtkScalarsToColors.
int vtkLookupTable::Allocate | ( | int | sz = 256 , |
int | ext = 256 |
||
) |
Allocate a color table of specified size.
|
virtual |
Generate lookup table from hue, saturation, value, alpha min/max values. Table is built from linear ramp of each value.
Reimplemented from vtkScalarsToColors.
|
virtual |
Force the lookup table to regenerate from hue, saturation, value, and alpha min/max values. Table is built from a linear ramp of each value. ForceBuild() is useful if a lookup table has been defined manually (using SetTableValue) and then an application decides to rebuild the lookup table using the implicit process.
|
virtual |
Set the shape of the table ramp to either linear or S-curve. The default is S-curve, which tails off gradually at either end. The equation used for the S-curve is y = (sin((x - 1/2)*pi) + 1)/2, while the equation for the linear ramp is simply y = x. For an S-curve greyscale ramp, you should set NumberOfTableValues to 402 (which is 256*pi/2) to provide room for the tails of the ramp. The equation for the SQRT is y = sqrt(x).
|
inline |
Set the shape of the table ramp to either linear or S-curve. The default is S-curve, which tails off gradually at either end. The equation used for the S-curve is y = (sin((x - 1/2)*pi) + 1)/2, while the equation for the linear ramp is simply y = x. For an S-curve greyscale ramp, you should set NumberOfTableValues to 402 (which is 256*pi/2) to provide room for the tails of the ramp. The equation for the SQRT is y = sqrt(x).
Definition at line 101 of file vtkLookupTable.h.
|
inline |
Set the shape of the table ramp to either linear or S-curve. The default is S-curve, which tails off gradually at either end. The equation used for the S-curve is y = (sin((x - 1/2)*pi) + 1)/2, while the equation for the linear ramp is simply y = x. For an S-curve greyscale ramp, you should set NumberOfTableValues to 402 (which is 256*pi/2) to provide room for the tails of the ramp. The equation for the SQRT is y = sqrt(x).
Definition at line 102 of file vtkLookupTable.h.
|
inline |
Set the shape of the table ramp to either linear or S-curve. The default is S-curve, which tails off gradually at either end. The equation used for the S-curve is y = (sin((x - 1/2)*pi) + 1)/2, while the equation for the linear ramp is simply y = x. For an S-curve greyscale ramp, you should set NumberOfTableValues to 402 (which is 256*pi/2) to provide room for the tails of the ramp. The equation for the SQRT is y = sqrt(x).
Definition at line 103 of file vtkLookupTable.h.
|
virtual |
Set the shape of the table ramp to either linear or S-curve. The default is S-curve, which tails off gradually at either end. The equation used for the S-curve is y = (sin((x - 1/2)*pi) + 1)/2, while the equation for the linear ramp is simply y = x. For an S-curve greyscale ramp, you should set NumberOfTableValues to 402 (which is 256*pi/2) to provide room for the tails of the ramp. The equation for the SQRT is y = sqrt(x).
void vtkLookupTable::SetScale | ( | int | scale | ) |
Set the type of scale to use, linear or logarithmic. The default is linear. If the scale is logarithmic, then the TableRange must not cross the value zero.
|
inline |
Set the type of scale to use, linear or logarithmic. The default is linear. If the scale is logarithmic, then the TableRange must not cross the value zero.
Definition at line 112 of file vtkLookupTable.h.
|
inline |
Set the type of scale to use, linear or logarithmic. The default is linear. If the scale is logarithmic, then the TableRange must not cross the value zero.
Definition at line 113 of file vtkLookupTable.h.
|
virtual |
Set the type of scale to use, linear or logarithmic. The default is linear. If the scale is logarithmic, then the TableRange must not cross the value zero.
void vtkLookupTable::SetTableRange | ( | double | r[2] | ) |
Set/Get the minimum/maximum scalar values for scalar mapping. Scalar values less than minimum range value are clamped to minimum range value. Scalar values greater than maximum range value are clamped to maximum range value. The TableRange values are only used when IndexedLookup is false.
|
virtual |
Set/Get the minimum/maximum scalar values for scalar mapping. Scalar values less than minimum range value are clamped to minimum range value. Scalar values greater than maximum range value are clamped to maximum range value. The TableRange values are only used when IndexedLookup is false.
|
virtual |
Set/Get the minimum/maximum scalar values for scalar mapping. Scalar values less than minimum range value are clamped to minimum range value. Scalar values greater than maximum range value are clamped to maximum range value. The TableRange values are only used when IndexedLookup is false.
|
virtual |
Set/Get the minimum/maximum scalar values for scalar mapping. Scalar values less than minimum range value are clamped to minimum range value. Scalar values greater than maximum range value are clamped to maximum range value. The TableRange values are only used when IndexedLookup is false.
|
virtual |
Set the range in hue (using automatic generation). Hue ranges between [0,1].
void vtkLookupTable::SetHueRange | ( | double | [2] | ) |
Set the range in hue (using automatic generation). Hue ranges between [0,1].
|
virtual |
Set the range in hue (using automatic generation). Hue ranges between [0,1].
|
virtual |
Set the range in hue (using automatic generation). Hue ranges between [0,1].
|
virtual |
Set the range in hue (using automatic generation). Hue ranges between [0,1].
|
virtual |
Set the range in saturation (using automatic generation). Saturation ranges between [0,1].
void vtkLookupTable::SetSaturationRange | ( | double | [2] | ) |
Set the range in saturation (using automatic generation). Saturation ranges between [0,1].
|
virtual |
Set the range in saturation (using automatic generation). Saturation ranges between [0,1].
|
virtual |
Set the range in saturation (using automatic generation). Saturation ranges between [0,1].
|
virtual |
Set the range in saturation (using automatic generation). Saturation ranges between [0,1].
|
virtual |
Set the range in value (using automatic generation). Value ranges between [0,1].
void vtkLookupTable::SetValueRange | ( | double | [2] | ) |
Set the range in value (using automatic generation). Value ranges between [0,1].
|
virtual |
Set the range in value (using automatic generation). Value ranges between [0,1].
|
virtual |
Set the range in value (using automatic generation). Value ranges between [0,1].
|
virtual |
Set the range in value (using automatic generation). Value ranges between [0,1].
|
virtual |
Set the range in alpha (using automatic generation). Alpha ranges from [0,1].
void vtkLookupTable::SetAlphaRange | ( | double | [2] | ) |
Set the range in alpha (using automatic generation). Alpha ranges from [0,1].
|
virtual |
Set the range in alpha (using automatic generation). Alpha ranges from [0,1].
|
virtual |
Set the range in alpha (using automatic generation). Alpha ranges from [0,1].
|
virtual |
Set the range in alpha (using automatic generation). Alpha ranges from [0,1].
|
virtual |
Set the color to use when a NaN (not a number) is encountered. This is an RGBA 4-tuple color of doubles in the range [0,1].
|
virtual |
Set the color to use when a NaN (not a number) is encountered. This is an RGBA 4-tuple color of doubles in the range [0,1].
|
virtual |
Set the color to use when a NaN (not a number) is encountered. This is an RGBA 4-tuple color of doubles in the range [0,1].
|
virtual |
Set the color to use when a NaN (not a number) is encountered. This is an RGBA 4-tuple color of doubles in the range [0,1].
|
virtual |
Set the color to use when a NaN (not a number) is encountered. This is an RGBA 4-tuple color of doubles in the range [0,1].
unsigned char* vtkLookupTable::GetNanColorAsUnsignedChars | ( | ) |
Return the NanColor as a pointer to 4 unsigned chars. This will overwrite any data returned by previous calls to MapValue.
|
virtual |
Map one value through the lookup table.
Reimplemented from vtkScalarsToColors.
|
virtual |
Map one value through the lookup table and return the color as an RGB array of doubles between 0 and 1.
Reimplemented from vtkScalarsToColors.
|
virtual |
Map one value through the lookup table and return the alpha value (the opacity) as a double between 0 and 1.
Reimplemented from vtkScalarsToColors.
|
virtual |
Return the table index associated with a particular value. Do not use this function when IndexedLookup is true: in that case, the set of values v may take on is exactly the integers from 0 to GetNumberOfTableValues() - 1; and v serves directly as an index into TableValues.
void vtkLookupTable::SetNumberOfTableValues | ( | vtkIdType | number | ) |
Specify the number of values (i.e., colors) in the lookup table.
|
inline |
Specify the number of values (i.e., colors) in the lookup table.
Definition at line 188 of file vtkLookupTable.h.
|
virtual |
Directly load color into lookup table. Use [0,1] double values for color component specification. Make sure that you've either used the Build() method or used SetNumberOfTableValues() prior to using this method.
|
virtual |
Directly load color into lookup table. Use [0,1] double values for color component specification.
double* vtkLookupTable::GetTableValue | ( | vtkIdType | id | ) |
Return a rgba color value for the given index into the lookup table. Color components are expressed as [0,1] double values.
void vtkLookupTable::GetTableValue | ( | vtkIdType | id, |
double | rgba[4] | ||
) |
Return a rgba color value for the given index into the lookup table. Color components are expressed as [0,1] double values.
|
inline |
Get pointer to color table data. Format is array of unsigned char r-g-b-a-r-g-b-a...
Definition at line 215 of file vtkLookupTable.h.
|
inline |
Get pointer to data. Useful for direct writes into object. MaxId is bumped by number (and memory allocated if necessary). Id is the location you wish to write into; number is the number of rgba values to write.
Definition at line 319 of file vtkLookupTable.h.
|
inlinevirtual |
Sets/Gets the range of scalars which will be mapped. This is a duplicate of Get/SetTableRange.
Reimplemented from vtkScalarsToColors.
Definition at line 228 of file vtkLookupTable.h.
|
inlinevirtual |
Sets/Gets the range of scalars which will be mapped. This is a duplicate of Get/SetTableRange.
Reimplemented from vtkScalarsToColors.
Definition at line 229 of file vtkLookupTable.h.
|
inline |
Sets/Gets the range of scalars which will be mapped. This is a duplicate of Get/SetTableRange.
Definition at line 230 of file vtkLookupTable.h.
|
static |
Returns the log of range
in log_range
. There is a little more to this than simply taking the log10 of the two range values: we do conversion of negative ranges to positive ranges, and conversion of zero to a 'very small number'.
|
static |
Apply log to value, with appropriate constraints.
|
virtual |
Set the number of colors in the lookup table. Use SetNumberOfTableValues() instead, it can be used both before and after the table has been built whereas SetNumberOfColors() has no effect after the table has been built.
|
virtual |
Set the number of colors in the lookup table. Use SetNumberOfTableValues() instead, it can be used both before and after the table has been built whereas SetNumberOfColors() has no effect after the table has been built.
void vtkLookupTable::SetTable | ( | vtkUnsignedCharArray * | ) |
Set/Get the internal table array that is used to map the scalars to colors. The table array is an unsigned char array with 4 components representing RGBA.
|
virtual |
Set/Get the internal table array that is used to map the scalars to colors. The table array is an unsigned char array with 4 components representing RGBA.
|
virtual |
map a set of scalars through the lookup table
Reimplemented from vtkScalarsToColors.
|
virtual |
Copy the contents from another LookupTable
Reimplemented from vtkScalarsToColors.
|
inlinevirtual |
This should return 1 is the subclass is using log scale for mapping scalars to colors. Returns 1 is scale == VTK_SCALE_LOG10.
Reimplemented from vtkScalarsToColors.
Definition at line 277 of file vtkLookupTable.h.
|
virtual |
Get the number of available colors for mapping to.
Reimplemented from vtkScalarsToColors.
|
virtual |
Return a color given an integer index. This is used to assign colors to annotations (given an offset into the list of annotations). If the table is empty or idx < 0, then NanColor is returned.
Reimplemented from vtkScalarsToColors.
|
protected |
Definition at line 295 of file vtkLookupTable.h.
|
protected |
Definition at line 296 of file vtkLookupTable.h.
|
protected |
Definition at line 297 of file vtkLookupTable.h.
|
protected |
Definition at line 298 of file vtkLookupTable.h.
|
protected |
Definition at line 299 of file vtkLookupTable.h.
|
protected |
Definition at line 300 of file vtkLookupTable.h.
|
protected |
Definition at line 301 of file vtkLookupTable.h.
|
protected |
Definition at line 302 of file vtkLookupTable.h.
|
protected |
Definition at line 303 of file vtkLookupTable.h.
|
protected |
Definition at line 304 of file vtkLookupTable.h.
|
protected |
Definition at line 305 of file vtkLookupTable.h.
|
protected |
Definition at line 306 of file vtkLookupTable.h.
|
protected |
Definition at line 307 of file vtkLookupTable.h.
|
protected |
Definition at line 308 of file vtkLookupTable.h.
|
protected |
Definition at line 310 of file vtkLookupTable.h.
|
protected |
Definition at line 311 of file vtkLookupTable.h.