SoLightModel(3)

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
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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