org.sunflow.core.gi
Class FakeGIEngine

java.lang.Object
  extended by 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