BALL::VIEW::LightSource Class Reference
[Setup of the Stage, Camera and LightSources]

Light source is mainly used for Renderer classes (e.g. More...

#include <stage.h>

List of all members.

Public Types
enum	Types { AMBIENT = 0, POSITIONAL, DIRECTIONAL }
	Enumeration of different types of lights. More...
Public Member Functions
virtual void	dump (std::ostream &s=std::cout, Size depth=0) const
	Internal value dump.
Constructors and Destructors
	LightSource ()
	Constructor.
	LightSource (const LightSource &light_source)
	Copy Constructor.
virtual	~LightSource ()
	Destructor.
Accessors
const Vector3 &	getPosition () const
	Get position.
void	setPosition (const Vector3 &position)
	Set position.
const Vector3 &	getDirection () const
	Get the direction vector of the light.
void	setDirection (const Vector3 &direction)
	Set the direction vector of the light.
const Vector3 &	getAttenuation () const
	Get the attenuation parameters of the light.
void	setAttenuation (const Vector3 &attenuation)
	Set the attenuation parameters of the light.
const Angle &	getAngle () const
	Get the angle of the light cone.
void	setAngle (const Angle &angle)
	Set the angle of the light cone.
float	getIntensity () const
	Get the light intensity.
void	setIntensity (float intensity)
	Set the intensity.
const ColorRGBA &	getColor () const
	Get the color of the light.
void	setColor (const ColorRGBA &color)
	Set the color of the light.
Index	getType () const
	Get the type of the light.
void	setType (Types type)
	Set the type of the light.
void	setRelativeToCamera (bool state)
	If set to true, the LightSource will move with the Camera.
bool	isRelativeToCamera () const
	Test if a LightSource will move with the Camera.
LightSource &	operator= (const LightSource &light)
bool	operator< (const LightSource &light) const
	needed for MSVC, dont use it otherwise!
Predicates
bool	operator== (const LightSource &light_source) const
Protected Attributes
Vector3	position_
Vector3	direction_
Vector3	attenuation_
Vector3	r_position_
Vector3	r_direction_
Angle	angle_
float	intensity_
ColorRGBA	color_
Index	type_
bool	relative_

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Detailed Description

Light source is mainly used for Renderer classes (e.g.

OpenGL and POVRay). Currently we support ambient, positional and directional light sources. The Position and direction of lights can be stored twofold:

• Either with absolute room coordinates and a direction vector or \
• Relative to a Camera. In this case, the position and direction vector are stored as multiples of look right, look up and view vector.

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Member Enumeration Documentation

enum BALL::VIEW::LightSource::Types

Enumeration of different types of lights.

Enumerator:

AMBIENT	Ambient light doesn't come from any particular direction. All the objects in the scene will be lit up by the ambient light.
POSITIONAL	Diffuse light is created the light source and is reflected off the surface of any object in the scene. Any surface of an object that the light hits directly will be very bright, and areas the light barely gets to will be darker.

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Member Function Documentation

virtual void BALL::VIEW::LightSource::dump	(	std::ostream &	s = std::cout,
		Size	depth = 0
	)			const [virtual]

Internal value dump.

Dump the current state of this instance to the output ostream s with dumping depth depth.

Parameters:

	s	output stream
	depth	the dumping depth

const ColorRGBA& BALL::VIEW::LightSource::getColor

(

)

const

Get the color of the light.

The alpha channel of the color is ignored.

float BALL::VIEW::LightSource::getIntensity

(

)

const

Get the light intensity.

0 is the minumum, 1 is the maximum.

Index BALL::VIEW::LightSource::getType

(

)

const

Get the type of the light.

See also:

Types

void BALL::VIEW::LightSource::setColor

(

const ColorRGBA &

color

)

Set the color of the light.

The alpha channel of the color is ignored.

void BALL::VIEW::LightSource::setIntensity

(

float

intensity

)

Set the intensity.

0 is the minumum, 1 is the maximum.

void BALL::VIEW::LightSource::setType

(

Types

type

)

Set the type of the light.

See also:

Types