PhotonData Struct Reference

Stores the direction and power of a photon as "payload" of a generic kd-tree node (see kdtree.h) More...

#include <photon.h>

Public Member Functions
	PhotonData ()
	Dummy constructor.
	PhotonData (const Vector3f &dir, const Color3f &power)
	Initialize a photon with the specified direction of propagation and power.
Vector3f	getDirection () const
Color3f	getPower () const
	Convert the photon power from RGBE to floating point.

Public Attributes
uint8_t	rgbe [4]
	Photon power stored in Greg Ward's RGBE format.
uint8_t	theta
	Discretized photon direction (theta component)
uint8_t	phi
	Discretized photon direction (phi component)

Static Protected Member Functions
static bool	initialize ()
	Initialize the precomputed lookup tables.

Static Protected Attributes
Precomputed lookup tables
static float	m_cosTheta [256]
static float	m_sinTheta [256]
static float	m_cosPhi [256]
static float	m_sinPhi [256]
static float	m_expTable [256]
static bool	m_precompTableReady = PhotonData::initialize()

Detailed Description

Stores the direction and power of a photon as "payload" of a generic kd-tree node (see kdtree.h)

Definition at line 28 of file photon.h.

Member Function Documentation

getDirection()

Vector3f PhotonData::getDirection ( ) const

inline

Convert the stored photon direction from quantized spherical coordinates to a Vector3f value. Uses precomputation similar to that of Henrik Wann Jensen's implementation.

Definition at line 44 of file photon.h.

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

• photon.h
• photon.cpp