#include <pointLight.h>

Inheritance diagram for Ray::PointLight:

Public Member Functions
std::string	name (void) const

Util::Point3D	getAmbient (Util::Ray3D ray, const class RayShapeIntersectionInfo &iInfo, const Material &material) const

Util::Point3D	getDiffuse (Util::Ray3D ray, const class RayShapeIntersectionInfo &iInfo, const Material &material) const

Util::Point3D	getSpecular (Util::Ray3D ray, const class RayShapeIntersectionInfo &iInfo, const Material &material) const

bool	isInShadow (const class RayShapeIntersectionInfo &iInfo, const class Shape &shape, unsigned int tIdx) const

Util::Point3D	transparency (const class RayShapeIntersectionInfo &iInfo, const class Shape &shape, Util::Point3D cLimit, unsigned int samples, unsigned int tIdx) const

void	drawOpenGL (int index, GLSLProgram *glslProgram) const

Public Member Functions inherited from Ray::Light
virtual	~Light (void)

Static Public Member Functions
static std::string	Directive (void)

Protected Attributes
Util::Point3D	_location

double	_constAtten

double	_linearAtten

double	_quadAtten

Protected Attributes inherited from Ray::Light
Util::Point3D	_ambient

Util::Point3D	_diffuse

Util::Point3D	_specular

Private Member Functions
void	_write (std::ostream &stream) const

void	_read (std::istream &stream)

Detailed Description

This class describes a point-light light-source. This light has a fixed position and the light attenuates as function of the distance from the light-source.

Member Function Documentation

◆ _read()

void PointLight::_read ( std::istream & stream )

privatevirtual

This method reads the Light from the stream (excluding the starting directive)

Implements Ray::Light.

Reimplemented in Ray::SphereLight.

◆ _write()

void PointLight::_write ( std::ostream & stream ) const

privatevirtual

This method writes the Light into the stream (including the starting directive)

Implements Ray::Light.

Reimplemented in Ray::SphereLight.

◆ Directive()

static std::string Ray::PointLight::Directive ( void )

inlinestatic

This static method returns the directive describing the Light.

◆ drawOpenGL()

void PointLight::drawOpenGL	(	int	index,
		GLSLProgram *	glslProgram
	)		const

virtual

This method calls the necessary OpenGL commands to render the light. The index argument specifices the index of the light that is to be drawn.

Implements Ray::Light.

◆ getAmbient()

Point3D PointLight::getAmbient	(	Util::Ray3D	ray,
		const class RayShapeIntersectionInfo &	iInfo,
		const Material &	material
	)		const

virtual

This method returns the ambient contribution of the light source to the specified hit location.

Implements Ray::Light.

◆ getDiffuse()

Point3D PointLight::getDiffuse	(	Util::Ray3D	ray,
		const class RayShapeIntersectionInfo &	iInfo,
		const Material &	material
	)		const

virtual

This method returns the diffuse contribution of the light source to the specified hit location.

Implements Ray::Light.

◆ getSpecular()

Point3D PointLight::getSpecular	(	Util::Ray3D	ray,
		const class RayShapeIntersectionInfo &	iInfo,
		const Material &	material
	)		const

virtual

This method returns the specular contribution of the light source to the specified hit location.

Implements Ray::Light.

◆ isInShadow()

bool PointLight::isInShadow	(	const class RayShapeIntersectionInfo &	iInfo,
		const class Shape &	shape,
		unsigned int	tIdx
	)		const

virtual

This method tests if the intersection point represented by iInfo is in shadow from the light source. The returned value is either 0 if the the intersection point is not in shadow or 1 if it is.

Implements Ray::Light.

◆ name()

std::string Ray::PointLight::name ( void ) const

inlinevirtual

This method returns the name of the shape

Implements Ray::Light.

Reimplemented in Ray::SphereLight.

◆ transparency()

Point3D PointLight::transparency	(	const class RayShapeIntersectionInfo &	iInfo,
		const class Shape &	shape,
		Util::Point3D	cLimit,
		unsigned int	samples,
		unsigned int	tIdx
	)		const

virtual

This method tests if the intersection point represented by iInfo is in partial shadow from the light source. A ray is cast from the hit location to the light source, and the transparency values are accumulated. If the light source is an area light source, multiple rays area cast to (uniformly randomly chosen positions on the area light sources and the transparency is set to the average of the transparency values over the samples. If the transparency value falls below cLimit, the testing terminates.

Implements Ray::Light.

Reimplemented in Ray::SphereLight.

Member Data Documentation

◆ _constAtten

double Ray::PointLight::_constAtten

protected

The constant term of the attenuation equation

◆ _linearAtten

double Ray::PointLight::_linearAtten

protected

The linear term of the attenuation equation

◆ _location

Util::Point3D Ray::PointLight::_location

protected

The position of the spot-light

◆ _quadAtten

double Ray::PointLight::_quadAtten

protected

The quadratic term of the attenuation equation

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

Assignments/Ray/pointLight.h
Assignments/Ray/pointLight.cpp
Assignments/Ray/pointLight.todo.cpp

Public Member Functions

Static Public Member Functions

Protected Attributes

Private Member Functions

Detailed Description

Member Function Documentation

◆ _read()

◆ _write()

◆ Directive()

◆ drawOpenGL()

◆ getAmbient()

◆ getDiffuse()

◆ getSpecular()

◆ isInShadow()

◆ name()

◆ transparency()

Member Data Documentation

◆ _constAtten

◆ _linearAtten

◆ _location

◆ _quadAtten