NAME

       SoGLColorIndexElement -

       The SoGLColorIndexElement class sets the current OpenGL color.

       This element is only used when the OpenGL canvas is in colorindex mode, ie where colors
       for individual pixels are fetched from a color lookup table ('CLUT'). The usual thing to
       do is to set up a canvas in RGBA truecolor mode.

SYNOPSIS

       #include <Inventor/elements/SoGLColorIndexElement.h>

       Inherits SoReplacedElement.

   Public Member Functions
       virtual void init (SoState *state)
       int32_t getNum (void) const
       int32_t get (const int index) const

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static int getClassStackIndex (void)
       static void * createInstance (void)
       static void initClass (void)
       static SbBool isColorIndexMode (SoState *state)
       static void set (SoState *const state, SoNode *const node, const int32_t numindices, const
           int32_t *const indices)
       static const
           SoGLColorIndexElement * getInstance (SoState *state)"
       static int32_t getDefault (void)

   Protected Member Functions
       virtual ~SoGLColorIndexElement ()

   Additional Inherited Members

Detailed Description

       The SoGLColorIndexElement class sets the current OpenGL color.

       This element is only used when the OpenGL canvas is in colorindex mode, ie where colors
       for individual pixels are fetched from a color lookup table ('CLUT'). The usual thing to
       do is to set up a canvas in RGBA truecolor mode.

       One common use for colorindex mode OpenGL canvases is to use one in the overlay planes
       (which are usually limited to only 2 or 4 available colors), if supported by the OpenGL
       hardware and / or driver.

       See Also:
           SoColorIndex

Constructor & Destructor Documentation

   SoGLColorIndexElement::~SoGLColorIndexElement () [protected],  [virtual]
       The destructor.

Member Function Documentation

   void * SoGLColorIndexElement::createInstance (void) [static]
       This API member is considered internal to the library, as it is not likely to be of
       interest to the application programmer.

   SbBool SoGLColorIndexElement::isColorIndexMode (SoState *state) [static]
       Returns TRUE if the current GL context is in color index mode.

   void SoGLColorIndexElement::init (SoState *state) [virtual]
       This function initializes the element type in the given SoState. It is called for the
       first element of each enabled element type in SoState objects.

       Reimplemented from SoReplacedElement.

   void SoGLColorIndexElement::set (SoState *conststate, SoNode *constnode, const
       int32_tnumindices, const int32_t *constindices) [static]
       Sets current color indices.

   const SoGLColorIndexElement * SoGLColorIndexElement::getInstance (SoState *state) [static]
       Returns the current element.

   int32_t SoGLColorIndexElement::getNum (void) const
       Returns number of color indices in element.

Author

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