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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. More...
#include <Inventor/elements/SoGLColorIndexElement.h>
Public Member Functions | |
| virtual void | init (SoState *state) |
| int32_t | getNum (void) const |
| int32_t | get (const int index) const |
Public Member Functions inherited from SoReplacedElement | |
| virtual SbBool | matches (const SoElement *element) const |
| virtual SoElement * | copyMatchInfo () const |
| uint32_t | getNodeId () const |
| virtual void | print (FILE *file) const |
Public Member Functions inherited from SoElement | |
| const SoType | getTypeId (void) const |
| int | getStackIndex (void) const |
| virtual void | push (SoState *state) |
| virtual void | pop (SoState *state, const SoElement *prevTopElement) |
| void | setDepth (const int depth) |
| int | getDepth (void) const |
| virtual | ~SoElement () |
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) |
Static Public Member Functions inherited from SoReplacedElement | |
| static SoType | getClassTypeId (void) |
| static int | getClassStackIndex (void) |
| static void | initClass (void) |
Static Public Member Functions inherited from SoElement | |
| static void | initClass (void) |
| static SoType | getClassTypeId (void) |
| static int | getClassStackIndex (void) |
| static void | initElements (void) |
| static int | getNumStackIndices (void) |
| static SoType | getIdFromStackIndex (const int stackIndex) |
Protected Member Functions | |
| virtual | ~SoGLColorIndexElement () |
Protected Member Functions inherited from SoReplacedElement | |
| virtual | ~SoReplacedElement () |
Protected Member Functions inherited from SoElement | |
| SoElement (void) | |
| void | capture (SoState *const state) const |
| virtual void | captureThis (SoState *state) const |
| void | setTypeId (const SoType typeId) |
| void | setStackIndex (const int index) |
| SoElement * | getNextInStack (void) const |
| SoElement * | getNextFree (void) const |
Additional Inherited Members | |
Static Protected Member Functions inherited from SoReplacedElement | |
| static SoElement * | getElement (SoState *const state, const int stackIndex, SoNode *const node) |
Static Protected Member Functions inherited from SoElement | |
| static SoElement * | getElement (SoState *const state, const int stackIndex) |
| static const SoElement * | getConstElement (SoState *const state, const int stackIndex) |
| static int | createStackIndex (const SoType id) |
Protected Attributes inherited from SoReplacedElement | |
| uint32_t | nodeId |
Protected Attributes inherited from SoElement | |
| SoType | typeId |
| int | stackIndex |
| int | depth |
Static Protected Attributes inherited from SoElement | |
| static int | classStackIndex |
| static SoTypeList * | stackToType |
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.
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protectedvirtual |
The destructor.
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static |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
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static |
Returns TRUE if the current GL context is in color index mode.
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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.
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static |
Sets current color indices.
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static |
Returns the current element.
| int32_t SoGLColorIndexElement::getNum | ( | void | ) | const |
Returns number of color indices in element.
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