class SG_EXPORT osg::Light

Light state class which encapsulates OpenGL glLight() functionality

Inheritance:

Public Methods

Light()

META_StateAttribute(Light, (Type)(LIGHT_0+_lightnum))

virtual int compare(const StateAttribute& sa) const

return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs

inline void on()

Turn the light on.

inline void off()

Turn the light off.

virtual void apply(State& state) const

Apply the light's state to the OpenGL state machine.

inline void setAmbient( const Vec4& ambient )

Set the ambient component of the light.

inline const Vec4& getAmbient() const

Get the ambient component of the light.

inline void setDiffuse( const Vec4& diffuse )

Set the diffuse component of the light.

inline const Vec4& getDiffuse() const

Get the diffuse component of the light.

inline void setSpecular( const Vec4& specular )

Set the specular component of the light.

inline const Vec4& getSpecular() const

Get the specular component of the light.

inline void setPosition( const Vec4& position )

Set the position of the light.

inline const Vec4& getPosition() const

Get the position of the light.

inline void setDirection( const Vec3& direction )

Set the direction of the light.

inline const Vec3& getDirection() const

Get the direction of the light.

inline void setConstantAttenuation( const float constant_attenuation )

Set the constant attenuation of the light.

inline const float getConstantAttenuation() const

Get the constant attenuation of the light.

inline void setLinearAttenuation( const float linear_attenuation )

Set the linear attenuation of the light.

inline const float getLinearAttenuation() const

Get the linear attenuation of the light.

inline void setQuadraticAttenuation( const float quadratic_attenuation )

Set the quadratic attenuation of the light.

inline const float getQuadraticAttenuation() const

Get the quadratic attenuation of the light.

inline void setSpotExponent( const float spot_exponent )

Set the spot exponent of the light.

inline const float getSpotExponent() const

Get the spot exponent of the light.

inline void setSpotCutoff( const float spot_cutoff )

Set the spot cutoff of the light.

inline const 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

Protected Fields

int _lightnum

bool _on

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

static int _currentLightNum

Protected Methods

virtual ~Light()

void init()

Initialize the light's settings with some decent defaults.

Inherited from StateAttribute:

Public Methods

virtual Object* clone() const

virtual bool isSameKindAs(const Object* obj) const

virtual const char* className() const

virtual const Type getType() const

bool operator < (const StateAttribute& rhs) const

bool operator == (const StateAttribute& rhs) const

bool operator != (const StateAttribute& rhs) const

virtual void setStateSetModes(StateSet&, const GLModeValue) const

virtual void compile(State&) const

Public Members

typedef GLenum GLMode

typedef unsigned int GLModeValue

typedef unsigned int OverrideValue

enum Values

typedef unsigned int Type

enum Types

Inherited from Object:

Inherited from Referenced:

Public Methods

inline Referenced& operator = (Referenced&)

inline void ref() const

inline void unref() const

inline const int referenceCount() const

Protected Fields

mutable int _refCount

Documentation

Light state class which encapsulates OpenGL glLight() functionality

Light()

META_StateAttribute(Light, (Type)(LIGHT_0+_lightnum))

virtual int compare(const StateAttribute& sa) const

return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs

inline void on()

Turn the light on. Calling this method doesn't directly affect OpenGL's lighting mode.

inline void off()

Turn the light off. Calling this method doesn't directly affect OpenGL's lighting mode.

virtual void apply(State& state) const

Apply the light's state to the OpenGL state machine.

inline void setAmbient( const Vec4& ambient )

Set the ambient component of the light.

inline const Vec4& getAmbient() const

Get the ambient component of the light.

inline void setDiffuse( const Vec4& diffuse )

Set the diffuse component of the light.

inline const Vec4& getDiffuse() const

Get the diffuse component of the light.

inline void setSpecular( const Vec4& specular )

Set the specular component of the light.

inline const Vec4& getSpecular() const

Get the specular component of the light.

inline void setPosition( const Vec4& position )

Set the position of the light.

inline const Vec4& getPosition() const

Get the position of the light.

inline void setDirection( const Vec3& direction )

Set the direction of the light.

inline const Vec3& getDirection() const

Get the direction of the light.

inline void setConstantAttenuation( const float constant_attenuation )

Set the constant attenuation of the light.

inline const float getConstantAttenuation() const

Get the constant attenuation of the light.

inline void setLinearAttenuation( const float linear_attenuation )

Set the linear attenuation of the light.

inline const float getLinearAttenuation() const

Get the linear attenuation of the light.

inline void setQuadraticAttenuation( const float quadratic_attenuation )

Set the quadratic attenuation of the light.

inline const float getQuadraticAttenuation() const

Get the quadratic attenuation of the light.

inline void setSpotExponent( const float spot_exponent )

Set the spot exponent of the light.

inline const float getSpotExponent() const

Get the spot exponent of the light.

inline void setSpotCutoff( const float spot_cutoff )

Set the spot cutoff of the light.

inline const 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 ~Light()

void init()

Initialize the light's settings with some decent defaults.

int _lightnum

bool _on

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

static int _currentLightNum

This class has no child classes.

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