#include <vtkLookupTable.h>
Inheritance diagram for vtkLookupTable:
Public Methods | |
virtual const char * | GetClassName () |
virtual int | IsA (const char *type) |
void | PrintSelf (ostream &os, vtkIndent indent) |
int | Allocate (int sz=256, int ext=256) |
virtual void | Build () |
virtual void | SetNumberOfColors (int) |
virtual int | GetNumberOfColors () |
void | SetTableRange (float r[2]) |
virtual void | SetTableRange (float min, float max) |
virtual float * | GetTableRange () |
virtual void | GetTableRange (float data[2]) |
virtual void | SetHueRange (float, float) |
void | SetHueRange (float[2]) |
virtual float * | GetHueRange () |
virtual void | GetHueRange (float data[2]) |
virtual void | SetSaturationRange (float, float) |
void | SetSaturationRange (float[2]) |
virtual float * | GetSaturationRange () |
virtual void | GetSaturationRange (float data[2]) |
virtual void | SetValueRange (float, float) |
void | SetValueRange (float[2]) |
virtual float * | GetValueRange () |
virtual void | GetValueRange (float data[2]) |
virtual void | SetAlphaRange (float, float) |
void | SetAlphaRange (float[2]) |
virtual float * | GetAlphaRange () |
virtual void | GetAlphaRange (float data[2]) |
unsigned char * | MapValue (float v) |
void | MapScalarsThroughTable2 (void *input, unsigned char *output, int inputDataType, int numberOfValues, int inputIncrement, int outputIncrement) |
float * | GetColor (float x) |
void | GetColor (float x, float rgb[3]) |
float | GetOpacity (float v) |
void | SetNumberOfTableValues (int number) |
void | SetTableValue (int indx, float rgba[4]) |
void | SetTableValue (int indx, float r, float g, float b, float a=1.0) |
float * | GetTableValue (int id) |
void | GetTableValue (int id, float rgba[4]) |
unsigned char * | GetPointer (const int id) |
unsigned char * | WritePointer (const int id, const int number) |
float * | GetRange () |
void | SetRange (float min, float max) |
void | SetRange (float rng[2]) |
Static Public Methods | |
vtkLookupTable * | New () |
int | IsTypeOf (const char *type) |
vtkLookupTable * | SafeDownCast (vtkObject *o) |
Protected Methods | |
vtkLookupTable (int sze=256, int ext=256) | |
~vtkLookupTable () | |
vtkLookupTable (const vtkLookupTable &) | |
void | operator= (const vtkLookupTable &) |
Protected Attributes | |
int | NumberOfColors |
vtkUnsignedCharArray * | Table |
float | TableRange [2] |
float | HueRange [2] |
float | SaturationRange [2] |
float | ValueRange [2] |
float | AlphaRange [2] |
vtkTimeStamp | InsertTime |
vtkTimeStamp | BuildTime |
float | RGBA [4] |
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 is designed as a base class for derivation by other classes. The Build(), MapValue(), MapValues(), and SetTableRange() methods are virtual and may require overloading in subclasses.
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Allocate a color table of specified size. |
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Generate lookup table from hue, saturation, value, alpha min/max values. Table is built from linear ramp of each value. Reimplemented from vtkScalarsToColors. Reimplemented in vtkWindowLevelLookupTable. |
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Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkScalarsToColors. Reimplemented in vtkLogLookupTable. |
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Map one value through the lookup table and return the color as an RGB array of floats between 0 and 1. Implements vtkScalarsToColors. |
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Map one value through the lookup table and return the color as an RGB array of floats between 0 and 1. Reimplemented from vtkScalarsToColors. |
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Map one value through the lookup table and return the alpha value (the opacity) as a float between 0 and 1. |
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Get pointer to color table data. Format is array of unsigned char r-g-b-a-r-g-b-a... |
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Sets/Gets the range of scalars which will be mapped. Implements vtkScalarsToColors. |
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Return a rgba color value for the given index into the lookup table. Color components are expressed as [0,1] float values. |
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Return a rgba color value for the given index into the lookup table. Color components are expressed as [0,1] float values. |
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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. Reimplemented in vtkLogLookupTable. |
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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 vtkScalarsToColors. Reimplemented in vtkLogLookupTable. |
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map a set of scalars through the lookup table Implements vtkScalarsToColors. Reimplemented in vtkLogLookupTable. |
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Map one value through the lookup table. Implements vtkScalarsToColors. Reimplemented in vtkLogLookupTable. |
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Construct with range=(0,1); and hsv ranges set up for rainbow color table (from red to blue). Reimplemented from vtkObject. Reimplemented in vtkLogLookupTable. |
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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 vtkObject. Reimplemented in vtkLogLookupTable. |
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Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkScalarsToColors. Reimplemented in vtkLogLookupTable. |
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Set the range in alpha (using automatic generation). Alpha ranges from (0,1). |
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Set the range in hue (using automatic generation). Hue ranges between (0,1). |
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Set the number of colors in the lookup table. Use this method before building the lookup table. Use SetNumberOfTableValues() to change the table size after the lookup table has been built. |
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Specify the number of values (i.e., colors) in the lookup table. This method simply allocates memory and prepares the table for use with SetTableValue(). It differs from Build() method in that the allocated memory is not initialized according to HSVA ramps. |
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Set the range in saturation (using automatic generation). Saturation ranges between (0,1). |
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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. Reimplemented in vtkLogLookupTable. |
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Directly load color into lookup table. Use [0,1] float values for color component specification. |
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Directly load color into lookup table. Use [0,1] float values for color component specification. Make sure that you've either used the Build() method or used SetNumberOfTableValues() prior to using this method. |
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Set the range in value (using automatic generation). Value ranges between (0,1). |
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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. |