NAME

       SoNormal -

       The SoNormal class is a node for providing normals to the state.

       Coin will automatically calculate normals for you if no SoNormal nodes are present in the
       scene graph, but explicitly setting normals is useful for at least two purposes: 1) a
       potential increase in performance, 2) you can calculate and use 'incorrect' normals to do
       various special effects.

SYNOPSIS

       #include <Inventor/nodes/SoNormal.h>

       Inherits SoNode.

   Public Member Functions
       virtual SoType getTypeId (void) const
           Returns the type identification of an object derived from a class inheriting SoBase.
           This is used for run-time type checking and 'downward' casting.
       SoNormal (void)
       virtual void doAction (SoAction *action)
       virtual void GLRender (SoGLRenderAction *action)
       virtual void callback (SoCallbackAction *action)
       virtual void pick (SoPickAction *action)
       virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

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

   Public Attributes
       SoMFVec3f vector

   Protected Member Functions
       virtual const SoFieldData * getFieldData (void) const
       virtual ~SoNormal ()

   Static Protected Member Functions
       static const SoFieldData ** getFieldDataPtr (void)

   Additional Inherited Members

Detailed Description

       The SoNormal class is a node for providing normals to the state.

       Coin will automatically calculate normals for you if no SoNormal nodes are present in the
       scene graph, but explicitly setting normals is useful for at least two purposes: 1) a
       potential increase in performance, 2) you can calculate and use 'incorrect' normals to do
       various special effects.

       FILE FORMAT/DEFAULTS:

       Normal {
           vector [  ]
       }

       See Also:
           SoNormalBinding

Constructor & Destructor Documentation

   SoNormal::SoNormal (void)
       Constructor.

   SoNormal::~SoNormal () [protected],  [virtual]
       Destructor.

Member Function Documentation

   SoType SoNormal::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
         }
       }

       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 * SoNormal::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 SoNormal::doAction (SoAction *action) [virtual]
       This function performs the typical operation of a node for any action.

       Reimplemented from SoNode.

   void SoNormal::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.

   void SoNormal::callback (SoCallbackAction *action) [virtual]
       Action method for SoCallbackAction.

       Simply updates the state according to how the node behaves for the render action, so the
       application programmer can use the SoCallbackAction for extracting information about the
       scene graph.

       Reimplemented from SoNode.

   void SoNormal::pick (SoPickAction *action) [virtual]
       Action method for SoPickAction.

       Does common processing for SoPickAction action instances.

       Reimplemented from SoNode.

   void SoNormal::getPrimitiveCount (SoGetPrimitiveCountAction *action) [virtual]
       Action method for the SoGetPrimitiveCountAction.

       Calculates the number of triangle, line segment and point primitives for the node and adds
       these to the counters of the action.

       Nodes influencing how geometry nodes calculates their primitive count also overrides this
       method to change the relevant state variables.

       Reimplemented from SoNode.

Member Data Documentation

   SoMFVec3f SoNormal::vector
       Sets a pool of normal vectors in the traversal state.

Author

       Generated automatically by Doxygen for Coin from the source code.