SoColorIndex - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 2.5.0
Note : Coin

NAMESoColorIndex − The SoColorIndex class is used to specify color indices for subsequent shapes​.

SYNOPSIS
#include <Inventor/nodes/SoColorIndex​.h> Inherits SoNode​.

Public Member Functionsvirtual SoType getTypeId (void) const
SoColorIndex (void)
virtual void GLRender (SoGLRenderAction *action)

Static Public Member Functionsstatic SoType getClassTypeId (void)
static void initClass (void)

Public AttributesSoMFInt32 index

Protected Member Functionsvirtual const SoFieldData * getFieldData (void) const
virtual ~SoColorIndex ()

Static Protected Member Functionsstatic const SoFieldData ** getFieldDataPtr (void)

Additional Inherited Members

Detailed DescriptionThe SoColorIndex class is used to specify color indices for subsequent shapes​. This node should only be used in OpenGL color-index mode, and only when the current light model is set to SoLightModel::BASE_COLOR​. OpenGL colorindex mode is where the 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​. FILE FORMAT/DEFAULTS: ColorIndex { index 1 }

Constructor & Destructor Documentation

SoColorIndex::SoColorIndex (void)Constructor​. References index​.

SoColorIndex::~SoColorIndex () [protected], [virtual]Destructor​.

Member Function Documentation

SoType SoColorIndex::getTypeId (void) const [virtual]Returns the type identification of an object derived from a class inheriting SoBase​. This is used for run-time type checking and 'downward' casting​. Usage example: void foo(SoNode * node) { if (node->getTypeId() == SoFile::getClassTypeId()) { SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type } else if (node->getTypeId()​.isOfType(SoGroup::getClassTypeId())) { SoGroup * group = (SoGroup *)node; // safe downward cast, knows the type } }For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses​. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode​.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine​.h (for engine classes) and so on​. For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups​. Implements SoBase​.

const SoFieldData * SoColorIndex::getFieldData (void) const [protected], [virtual]Returns a pointer to the class-wide field data storage object for this instance​. If no fields are present, returns NULL​. Reimplemented from SoFieldContainer​.

void SoColorIndex::GLRender (SoGLRenderAction * action) [virtual]Action method for the SoGLRenderAction​. This is called during rendering traversals​. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method​. Reimplemented from SoNode​. References SoOverrideElement::getColorIndexOverride(), SoMField::getNum(), SoAction::getState(), index, SoField::isIgnored(), SoNode::isOverride(), SoGLColorIndexElement::set(), and SoOverrideElement::setColorIndexOverride()​.

Member Data Documentation

SoMFInt32 SoColorIndex::indexColor indices which can be used by shapes​. Referenced by GLRender(), and SoColorIndex()​.

AuthorGenerated automatically by Doxygen for Coin from the source code​.
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Johanes Gumabo
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