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NAME

       SoAnnotation -

       The SoAnnotation node draws all its child geometry on top of other
       geometry.

       This group-type node uses delayed rendering in combination with Z-
       buffer disabling to let its children transparently render their
       geometry on top of the other geometry in the scene.

SYNOPSIS

       #include <Inventor/nodes/SoAnnotation.h>

       Inherits SoSeparator.

   Public Member Functions
       SoAnnotation (void)
       virtual void GLRender (SoGLRenderAction *action)
       virtual void GLRenderBelowPath (SoGLRenderAction *action)
       virtual void GLRenderInPath (SoGLRenderAction *action)
       virtual void GLRenderOffPath (SoGLRenderAction *action)

   Static Public Member Functions
       static void initClass (void)

   Protected Member Functions
       virtual ~SoAnnotation ()

Detailed Description

       The SoAnnotation node draws all its child geometry on top of other
       geometry.

       This group-type node uses delayed rendering in combination with Z-
       buffer disabling to let its children transparently render their
       geometry on top of the other geometry in the scene.

       Since the Z-buffer needs to be disabled, the childrens’ geometry will
       not be rendered back-to-front sorted, but rather in the order they are
       present in the scenegraph.

       FILE FORMAT/DEFAULTS:

           Annotation {
               renderCaching AUTO
               boundingBoxCaching AUTO
               renderCulling AUTO
               pickCulling AUTO
           }

Constructor & Destructor Documentation

   SoAnnotation::SoAnnotation (void) Constructor.
   SoAnnotation::~SoAnnotation () [protected, virtual] Destructor.

Member Function Documentation

   void SoAnnotation::initClass (void) [static] Sets up initialization for
       data common to all instances of this class, like submitting necessary
       information to the Coin type system.
       Reimplemented from SoSeparator.

   void SoAnnotation::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 SoSeparator.

   void SoAnnotation::GLRenderBelowPath (SoGLRenderAction * action) [virtual]
       SGI Open Inventor v2.1 obsoleted support for
       SoGLRenderAction::addMethod(). Instead, GLRender() might be called
       directly, and to optimize traversal, the SoSeparator node calls
       GLRenderBelowPath whenever the path code is BELOW_PATH or NO_PATH (path
       code is guaranteed not to change). To be compatible with SGI’s Inventor
       (and thereby also TGS’) we have chosen to follow their implementation
       in this respect.
       SoSeparator::GLRenderBelowPath() do not traverse its children using
       SoChildList::traverse(), but calls GLRenderBelowPath() directly for all
       its children.

       Reimplemented from SoSeparator.

   void SoAnnotation::GLRenderInPath (SoGLRenderAction * action) [virtual]
       Implements the SoAction::IN_PATH traversal method for the rendering
       action.
       Reimplemented from SoSeparator.

   void SoAnnotation::GLRenderOffPath (SoGLRenderAction * action) [virtual]
       Implements the SoAction::OFF_PATH traversal method for the rendering
       action.
       Reimplemented from SoSeparator.

Author

       Generated automatically by Doxygen for Coin from the source code.