osg::Light Class Reference

Light state class which encapsulates OpenGL glLight() functionality. More...

Inheritance diagram for osg::Light:

[legend]List of all members.

Public Member Functions
	Light ()
	Light (const Light &light, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy.
	META_StateAttribute (osg, Light, LIGHT)
virtual int	compare (const StateAttribute &sa) const
	Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.
virtual unsigned int	getMember () const
	Return the member identifier within the attribute's class type.
virtual bool	getModeUsage (ModeUsage &usage) const
	Return the modes associated with this StateAttribute.
void	setLightNum (int num)
	Set which OpenGL light to operate on.
int	getLightNum () const
	Get which OpenGL light this osg::Light operates on.
void	setAmbient (const Vec4 &ambient)
	Set the ambient component of the light.
const Vec4 &	getAmbient () const
	Get the ambient component of the light.
void	setDiffuse (const Vec4 &diffuse)
	Set the diffuse component of the light.
const Vec4 &	getDiffuse () const
	Get the diffuse component of the light.
void	setSpecular (const Vec4 &specular)
	Set the specular component of the light.
const Vec4 &	getSpecular () const
	Get the specular component of the light.
void	setPosition (const Vec4 &position)
	Set the position of the light.
const Vec4 &	getPosition () const
	Get the position of the light.
void	setDirection (const Vec3 &direction)
	Set the direction of the light.
const Vec3 &	getDirection () const
	Get the direction of the light.
void	setConstantAttenuation (float constant_attenuation)
	Set the constant attenuation of the light.
float	getConstantAttenuation () const
	Get the constant attenuation of the light.
void	setLinearAttenuation (float linear_attenuation)
	Set the linear attenuation of the light.
float	getLinearAttenuation () const
	Get the linear attenuation of the light.
void	setQuadraticAttenuation (float quadratic_attenuation)
	Set the quadratic attenuation of the light.
float	getQuadraticAttenuation () const
	Get the quadratic attenuation of the light.
void	setSpotExponent (float spot_exponent)
	Set the spot exponent of the light.
float	getSpotExponent () const
	Get the spot exponent of the light.
void	setSpotCutoff (float spot_cutoff)
	Set the spot cutoff of the light.
float	getSpotCutoff () const
	Get the spot cutoff of the light.
void	captureLightState ()
	Capture the lighting settings of the current OpenGL state and store them in this object.
virtual void	apply (State &state) const
	Apply the light's state to the OpenGL state machine.
Protected Member Functions
virtual	~Light ()
void	init ()
	Initialize the light's settings with some decent defaults.
Protected Attributes
int	_lightnum
Vec4	_ambient
Vec4	_diffuse
Vec4	_specular
Vec4	_position
Vec3	_direction
float	_constant_attenuation
float	_linear_attenuation
float	_quadratic_attenuation
float	_spot_exponent
float	_spot_cutoff

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Detailed Description

Light state class which encapsulates OpenGL glLight() functionality.

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Constructor & Destructor Documentation

osg::Light::Light (   )

osg::Light::Light (  const Light &  light, const CopyOp &  copyop = CopyOp::SHALLOW_COPY )  [inline]

Copy constructor using CopyOp to manage deep vs shallow copy.

virtual osg::Light::~Light (   )  [protected, virtual]

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Member Function Documentation

virtual void osg::Light::apply (  State &  state  )  const [virtual]

Apply the light's state to the OpenGL state machine. Implements osg::StateAttribute.

void osg::Light::captureLightState (   )

Capture the lighting settings of the current OpenGL state and store them in this object.

virtual int osg::Light::compare (  const StateAttribute &  sa  )  const [inline, virtual]

Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. Implements osg::StateAttribute.

const Vec4& osg::Light::getAmbient (   )  const [inline]

Get the ambient component of the light.

float osg::Light::getConstantAttenuation (   )  const [inline]

Get the constant attenuation of the light.

const Vec4& osg::Light::getDiffuse (   )  const [inline]

Get the diffuse component of the light.

const Vec3& osg::Light::getDirection (   )  const [inline]

Get the direction of the light.

int osg::Light::getLightNum (   )  const [inline]

Get which OpenGL light this osg::Light operates on.

float osg::Light::getLinearAttenuation (   )  const [inline]

Get the linear attenuation of the light.

virtual unsigned int osg::Light::getMember (   )  const [inline, virtual]

Return the member identifier within the attribute's class type. Used for light number/clip plane number etc. Reimplemented from osg::StateAttribute.

virtual bool osg::Light::getModeUsage (  ModeUsage &  usage  )  const [inline, virtual]

Return the modes associated with this StateAttribute. Reimplemented from osg::StateAttribute.

const Vec4& osg::Light::getPosition (   )  const [inline]

Get the position of the light.

float osg::Light::getQuadraticAttenuation (   )  const [inline]

Get the quadratic attenuation of the light.

const Vec4& osg::Light::getSpecular (   )  const [inline]

Get the specular component of the light.

float osg::Light::getSpotCutoff (   )  const [inline]

Get the spot cutoff of the light.

float osg::Light::getSpotExponent (   )  const [inline]

Get the spot exponent of the light.

void osg::Light::init (   )  [protected]

Initialize the light's settings with some decent defaults.

osg::Light::META_StateAttribute (  osg  , Light  , LIGHT  )

void osg::Light::setAmbient (  const Vec4 &  ambient  )  [inline]

Set the ambient component of the light.

void osg::Light::setConstantAttenuation (  float  constant_attenuation  )  [inline]

Set the constant attenuation of the light.

void osg::Light::setDiffuse (  const Vec4 &  diffuse  )  [inline]

Set the diffuse component of the light.

void osg::Light::setDirection (  const Vec3 &  direction  )  [inline]

Set the direction of the light.

void osg::Light::setLightNum (  int  num  )  [inline]

Set which OpenGL light to operate on.

void osg::Light::setLinearAttenuation (  float  linear_attenuation  )  [inline]

Set the linear attenuation of the light.

void osg::Light::setPosition (  const Vec4 &  position  )  [inline]

Set the position of the light.

void osg::Light::setQuadraticAttenuation (  float  quadratic_attenuation  )  [inline]

Set the quadratic attenuation of the light.

void osg::Light::setSpecular (  const Vec4 &  specular  )  [inline]

Set the specular component of the light.

void osg::Light::setSpotCutoff (  float  spot_cutoff  )  [inline]

Set the spot cutoff of the light.

void osg::Light::setSpotExponent (  float  spot_exponent  )  [inline]

Set the spot exponent of the light.

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Member Data Documentation

Vec4 osg::Light::_ambient [protected]

float osg::Light::_constant_attenuation [protected]

Vec4 osg::Light::_diffuse [protected]

Vec3 osg::Light::_direction [protected]

int osg::Light::_lightnum [protected]

float osg::Light::_linear_attenuation [protected]

Vec4 osg::Light::_position [protected]

float osg::Light::_quadratic_attenuation [protected]

Vec4 osg::Light::_specular [protected]

float osg::Light::_spot_cutoff [protected]

float osg::Light::_spot_exponent [protected]

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The documentation for this class was generated from the following file:

• Light

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