Structure to hold options for one LightSource. More...

#include <ObjectTypes/Light/LightNode.hh>

Public Member Functions
	LightSource ()
	Default Constructor.

void	position (Vec3d _pos)
	Set position for LightSource. More...

Vec3d	position () const
	Get the position of the LightSource. More...

bool	directional () const
	Check if the light source is a directional light source. More...

Vec3d	direction () const
	Get direction of the light source. More...

void	direction (Vec3d _pos)
	Set the direction of the light source. More...

void	enable ()
	enable LightSource

void	disable ()
	disable LightSource

bool	enabled () const
	Get light source status.

void	spotDirection (Vec3d _pos)
	Set spot direction. More...

Vec3d	spotDirection () const
	get spot direction More...

void	ambientColor (Vec4f _color)
	set Ambient color for LightSource

Vec4f	ambientColor () const
	get Ambient color for LightSource

void	diffuseColor (Vec4f _color)
	set Diffuse color for LightSource

Vec4f	diffuseColor () const
	get Diffuse color for LightSource

void	specularColor (Vec4f _color)
	set Specular color for LightSource

Vec4f	specularColor () const
	get Specular color for LightSource

void	setColor (const Vec4f &_ambient, const Vec4f &_diffuse, const Vec4f &_specular)

void	fixedPosition (bool _state)
	make LightSource fixed or moveable with ModelViewMatrix

bool	fixedPosition () const

void	spotExponent (float _exponent)

float	spotExponent () const

void	spotCutoff (float _cutoff)

float	spotCutoff () const

void	constantAttenuation (float _constantAttenuation)

float	constantAttenuation () const

void	linearAttenuation (float _linearAttenuation)

float	linearAttenuation () const

void	quadraticAttenuation (float _quadraticAttenuation)

float	quadraticAttenuation () const

void	brightness (const float _brightness)

float	brightness () const

float	radius () const
	Get light source radius. More...

void	radius (const float _radius)
	Set light source radius. More...

Protected Attributes
Vec4f	position_

Vec4f	realPosition_

bool	enabled_

bool	fixedPosition_

Vec4f	ambientColor_

Vec4f	diffuseColor_

Vec4f	specularColor_

Vec3d	spotDirection_

Vec3d	realSpotDirection_

Vec4f	initialPosition_

Vec3d	initialSpotDirection_

bool	initialPositionInit_

float	spotExponent_

float	spotCutoff_

float	constantAttenuation_

float	linearAttenuation_

float	quadraticAttenuation_

float	brightness_

float	radius_

Friends
class	LightNode
	Simple Name for PlaneNode.

Detailed Description

Structure to hold options for one LightSource.

Definition at line 91 of file LightNode.hh.

Member Function Documentation

Vec3d ACG::SceneGraph::LightSource::direction ( ) const

Get direction of the light source.

Get direction of light.

Definition at line 129 of file LightNode.cc.

void ACG::SceneGraph::LightSource::direction ( Vec3d _pos )

Set the direction of the light source.

This function creates a directional light source. The position is not used by OpenGL. Internally the positions homogeneous coordinate is set to 0.0.

Definition at line 123 of file LightNode.cc.

bool ACG::SceneGraph::LightSource::directional ( ) const

Check if the light source is a directional light source.

If this light Source is a directional light source the function will return true. Otherwise false as the light source has a position.

Definition at line 133 of file LightNode.cc.

void ACG::SceneGraph::LightSource::position ( Vec3d _pos )

Set position for LightSource.

This function sets the position of a light source. OpenGL handles a position for a light source if the homogeneous coordinate is 1.0. If it is 0.0 the light source will be directional. So a 1.0 is set in this function to get a positioned light source.

Definition at line 114 of file LightNode.cc.

Vec3d ACG::SceneGraph::LightSource::position ( ) const

Get the position of the LightSource.

Be careful with this function. Check if the light source is not directional with the directional() function

Definition at line 119 of file LightNode.cc.

float ACG::SceneGraph::LightSource::radius ( ) const

inline

Get light source radius.

The light radius is the size of the lightsource. In OpenGL rendering this value is ignored. You can use it for example in raytracers to implement soft shadows.

Definition at line 212 of file LightNode.hh.

void ACG::SceneGraph::LightSource::radius ( const float _radius )

inline

Set light source radius.

The light radius is the size of the lightsource. In OpenGL rendering this value is ignored. You can use it for example in raytracers to implement soft shadows.

Definition at line 219 of file LightNode.hh.

void ACG::SceneGraph::LightSource::spotDirection ( Vec3d _pos )

Set spot direction.

Todo:: Improve documentation

Definition at line 147 of file LightNode.cc.

Vec3d ACG::SceneGraph::LightSource::spotDirection ( ) const

get spot direction

Todo:: Improve documentation

Definition at line 150 of file LightNode.cc.

Member Data Documentation

float ACG::SceneGraph::LightSource::radius_

protected

When using ray tracing, light sources can have extent. We simplify to spherical light sources with radius radius_.

Definition at line 251 of file LightNode.hh.

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

ObjectTypes/Light/LightNode.hh
ObjectTypes/Light/LightNode.cc

Public Member Functions

Protected Attributes

Friends

Detailed Description

Member Function Documentation

Member Data Documentation