Package org.sunflow.core.gi

Class IrradianceCacheGIEngine

java.lang.Object

org.sunflow.core.gi.IrradianceCacheGIEngine

All Implemented Interfaces:

GIEngine

public class IrradianceCacheGIEngine
extends java.lang.Object
implements GIEngine

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	IrradianceCacheGIEngine.Node
private static class	IrradianceCacheGIEngine.Sample

Field Summary

Fields

Modifier and Type	Field	Description
private GlobalPhotonMapInterface	globalPhotonMap
private float	invTolerance
private float	maxSpacing
private float	minSpacing
private IrradianceCacheGIEngine.Node	root
private java.util.concurrent.locks.ReentrantReadWriteLock	rwl
private int	samples
private float	tolerance

Constructor Summary

Constructors

Constructor	Description
IrradianceCacheGIEngine()

Method Summary

Modifier and Type	Method	Description
Color	getGlobalRadiance(ShadingState state)	This is an optional method for engines that contain a secondary illumination engine which can return an approximation of the global radiance in the scene (like a photon map).
Color	getIrradiance(ShadingState state, Color diffuseReflectance)	Return the incomming irradiance due to indirect diffuse illumination at the specified surface point.
private Color	getIrradiance(Point3 p, Vector3 n)
boolean	init(Options options, Scene scene)	Initialize the engine.
private void	insert(Point3 p, Vector3 n, float r0, Color irr)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

samples

private int samples

tolerance

private float tolerance

invTolerance

private float invTolerance

minSpacing

private float minSpacing

maxSpacing

private float maxSpacing

root

private IrradianceCacheGIEngine.Node root

rwl

private java.util.concurrent.locks.ReentrantReadWriteLock rwl

globalPhotonMap

private GlobalPhotonMapInterface globalPhotonMap

Constructor Detail

IrradianceCacheGIEngine

public IrradianceCacheGIEngine()

Method Detail

init

public boolean init(Options options,
                    Scene scene)

Description copied from interface: GIEngine

Initialize the engine. This is called before rendering begins.

Specified by:

init in interface GIEngine

Returns:

true if the init phase succeeded, false otherwise

getGlobalRadiance

public Color getGlobalRadiance(ShadingState state)

Description copied from interface: GIEngine

This is an optional method for engines that contain a secondary illumination engine which can return an approximation of the global radiance in the scene (like a photon map). Engines can safely return Color.BLACK if they can't or don't wish to support this.

Specified by:

getGlobalRadiance in interface GIEngine

Parameters:

state - shading state

Returns:

color approximating global radiance

getIrradiance

public Color getIrradiance(ShadingState state,
                           Color diffuseReflectance)

Description copied from interface: GIEngine

Return the incomming irradiance due to indirect diffuse illumination at the specified surface point.

Specified by:

getIrradiance in interface GIEngine

Parameters:

state - current render state describing the point to be computed

diffuseReflectance - diffuse albedo of the point being shaded, this can be used for importance tracking

Returns:

irradiance from indirect diffuse illumination at the specified point

insert

private void insert(Point3 p,
                    Vector3 n,
                    float r0,
                    Color irr)

getIrradiance

private Color getIrradiance(Point3 p,
                            Vector3 n)