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. 0
Johanes Gumabo
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