Emitter Class Reference

An interface for Emitter. More...

#include <emitter.h>

Inheritance diagram for Emitter:

Public Member Functions
	LM_INTERFACE_CLASS (Emitter, GeneralizedBSDF, 4)
	LM_DISABLE_COPY_AND_MOVE (Emitter)
	LM_INTERFACE_F (0, SamplePosition, void(const Vec2 &u, SurfaceGeometry &geom))
	Sample a position on the light. More...
	LM_INTERFACE_F (1, EvaluatePositionPDF, Float(const SurfaceGeometry &geom, bool evalDelta))
	Evaluate positional PDF. More...
	LM_INTERFACE_F (2, EvaluatePosition, SPD(const SurfaceGeometry &geom, bool evalDelta))
	Evaluate the positional component of the emitted quantity. More...
	LM_INTERFACE_F (3, RasterPosition, bool(const Vec3 &wo, const SurfaceGeometry &geom, Vec2 &rasterPos))
	Compute raster position from the direction and the position. More...
Public Member Functions inherited from GeneralizedBSDF
	LM_INTERFACE_CLASS (GeneralizedBSDF, Asset, 4)
	LM_DISABLE_COPY_AND_MOVE (GeneralizedBSDF)
	LM_INTERFACE_F (0, Type, int())
	Generalized BSDF type. More...
	LM_INTERFACE_F (1, SampleDirection, void(const Vec2 &u, Float uComp, int queryType, const SurfaceGeometry &geom, const Vec3 &wi, Vec3 &wo))
	Sample outgoing vector. More...
	LM_INTERFACE_F (2, EvaluateDirectionPDF, Float(const SurfaceGeometry &geom, int queryType, const Vec3 &wi, const Vec3 &wo, bool evalDelta))
	Evaluate PDF with the direction. More...
	LM_INTERFACE_F (3, EvaluateDirection, SPD(const SurfaceGeometry &geom, int types, const Vec3 &wi, const Vec3 &wo, TransportDirection transDir, bool evalDelta))
	Evaluate generalized BSDF. More...
Public Member Functions inherited from Asset
	LM_INTERFACE_CLASS (Asset, Clonable, 2)
	LM_DISABLE_COPY_AND_MOVE (Asset)
	LM_INTERFACE_F (0, Load, bool(const PropertyNode *prop, Assets *assets, const Primitive *primitive))
	Load an asset from a property node. More...
	LM_INTERFACE_F (1, PostLoad, bool(const Scene *scene))
	Post processing of the asset. More...
Public Member Functions inherited from Clonable
	LM_INTERFACE_CLASS (Clonable, Component, 1)
	LM_DISABLE_COPY_AND_MOVE (Clonable)
	LM_INTERFACE_F (0, Clone, void(Clonable *o))
	Clone the instalce. More...
Public Member Functions inherited from SIMDAlignedType
void *	operator new (std::size_t size) throw (std::bad_alloc)
void	operator delete (void *p)

Detailed Description

An interface for Emitter.

Member Function Documentation

Emitter::LM_INTERFACE_F	(	0	,
		SamplePosition	,
		void(const Vec2 &u, SurfaceGeometry &geom)
	)

Sample a position on the light.

Parameters

u	Uniform random numbers in [0,1]^2.
geom	Surface geometry at the sampled position.

Emitter::LM_INTERFACE_F	(	1	,
		EvaluatePositionPDF	,
		Float(const SurfaceGeometry &geom, bool evalDelta)
	)

Evaluate positional PDF.

Parameters

geom	Surface geometry.

Returns

Evaluated PDF.

Emitter::LM_INTERFACE_F	(	2	,
		EvaluatePosition	,
		SPD(const SurfaceGeometry &geom, bool evalDelta)
	)

Evaluate the positional component of the emitted quantity.

Parameters

geom	Surface geometry.

Returns

Positional component of the emitted quantity.

Emitter::LM_INTERFACE_F	(	3	,
		RasterPosition	,
		bool(const Vec3 &wo, const SurfaceGeometry &geom, Vec2 &rasterPos)
	)

Compute raster position from the direction and the position.

The function calculates the raster position from the outgoing ray. Returns false if calculated raster position is the outside of [0, 1]^2.

Parameters

wo	Outgoing direction from the point on the emitter.
geom	Surface geometry infromation around the point on the emitter.
rasterPos	Computed raster position.