org.sunflow.core.gi
Class FakeGIEngine

java.lang.Object
  org.sunflow.core.gi.FakeGIEngine

All Implemented Interfaces:

GIEngine

public class FakeGIEngine
extends java.lang.Object
implements GIEngine

This is a quick way to get a bit of ambient lighting into your scene with hardly any overhead. It's based on the formula found here:

Constructor Summary

FakeGIEngine()

Method Summary

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.
boolean	init(Options options, Scene scene) Initialize the engine.

Methods inherited from class java.lang.Object

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

Constructor Detail

FakeGIEngine

public FakeGIEngine()

Method Detail

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

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

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