NAME

       SoLightModel -

       The SoLightModel class is a node for specifying the model for geometry lighting.

       Use nodes of this type to set up how lighting should affect subsequent geometry in the
       scene.

SYNOPSIS

       #include <Inventor/nodes/SoLightModel.h>

       Inherits SoNode.

   Public Types
       enum Model { BASE_COLOR = SoLazyElement::BASE_COLOR, PHONG = SoLazyElement::PHONG }

   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.
       SoLightModel (void)
       virtual void doAction (SoAction *action)
       virtual void GLRender (SoGLRenderAction *action)
       virtual void callback (SoCallbackAction *action)

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

   Public Attributes
       SoSFEnum model

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

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

   Additional Inherited Members

Detailed Description

       The SoLightModel class is a node for specifying the model for geometry lighting.

       Use nodes of this type to set up how lighting should affect subsequent geometry in the
       scene.

       FILE FORMAT/DEFAULTS:

       LightModel {
           model PHONG
       }

Member Enumeration Documentation

   enum SoLightModel::Model
       Enumerates available light models.

       Enumerator

       BASE_COLOR
              Use the current diffuse material color for subsequent geometry, and do not let any
              lightsources influence the appearance of the rendering primitives.

       PHONG  Use Phong-style shading for the geometry.

Constructor & Destructor Documentation

   SoLightModel::SoLightModel (void)
       Constructor.

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

Member Function Documentation

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

       Reimplemented from SoNode.

   void SoLightModel::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 SoLightModel::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.

Member Data Documentation

   SoSFEnum SoLightModel::model
       Lightmodel to use. Defaults to SoLightModel::PHONG.

Author

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