NAME
SoVRMLDirectionalLight -
The SoVRMLDirectionalLight class is a node type for specifying
directional light sources
The detailed class documentation is taken verbatim from the VRML97
standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium,
and is used by permission of the Consortium:
SYNOPSIS
#include <Inventor/VRMLnodes/SoVRMLDirectionalLight.h>
Inherits SoVRMLLight.
Public Member Functions
SoVRMLDirectionalLight (void)
virtual void GLRender (SoGLRenderAction *action)
Static Public Member Functions
static void initClass (void)
Public Attributes
SoSFVec3f direction
Protected Member Functions
virtual ~SoVRMLDirectionalLight ()
Detailed Description
The SoVRMLDirectionalLight class is a node type for specifying
directional light sources
The detailed class documentation is taken verbatim from the VRML97
standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium,
and is used by permission of the Consortium:
DirectionalLight {
exposedField SFFloat ambientIntensity 0 # [0,1]
exposedField SFColor color 1 1 1 # [0,1]
exposedField SFVec3f direction 0 0 -1 # (-inf,inf)
exposedField SFFloat intensity 1 # [0,1]
exposedField SFBool on TRUE
}
.fi
The DirectionalLight node defines a directional light source that illuminates along rays parallel to a given 3-dimensional vector. A description of the ambientIntensity, color, intensity, and on fields is in 4.6.6, Light sources (<http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.6>).
The direction field specifies the direction vector of the illumination emanating from the light source in the local coordinate system. Light is emitted along parallel rays from an infinite distance away. A directional light source illuminates only the objects in its enclosing parent group. The light may illuminate everything within this coordinate system, including all children and descendants of its parent group. The accumulated transformations of the parent nodes affect the light. DirectionalLight nodes do not attenuate with distance. A precise description of VRML’s lighting equations is contained in 4.14, Lighting model (<http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.14>).
Constructor & Destructor Documentation
SoVRMLDirectionalLight::SoVRMLDirectionalLight (void) Constructor.
SoVRMLDirectionalLight::~SoVRMLDirectionalLight () [protected, virtual]
Destructor.
Member Function Documentation
void SoVRMLDirectionalLight::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 SoVRMLLight.
void SoVRMLDirectionalLight::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 SoVRMLLight.
Member Data Documentation
SoSFVec3f SoVRMLDirectionalLight::direction The light direction.
Author
Generated automatically by Doxygen for Coin from the source code.