de.grogra.ray2.tracing
Class PathTracer

java.lang.Object
  de.grogra.ray2.tracing.ProcessorBase
      de.grogra.ray2.tracing.RayProcessorBase
          de.grogra.ray2.tracing.PathTracer

All Implemented Interfaces:

RayProcessor, java.lang.Cloneable

Direct Known Subclasses:

BiDirectionalProcessor, LineTracer

public class PathTracer
extends RayProcessorBase

This class implements a physically correct path tracer. The computation is done using the formulas for bidirectional path tracing in Eric Veach's PhD thesis "Robust Monte Carlo Methods for Light Transport Simulation". However note that the implemented path tracer is a standard path tracer which creates random paths starting at the eye and directly connects each created vertex with all lights in the scene. So in the terminology of bidirectional path tracing, only light subpaths consisting of a single light vertex are considered (or zero light vertices in case of a ray which hits a light surface).

Author:

Ole Kniemeyer

Nested Class Summary

Nested classes/interfaces inherited from class de.grogra.ray2.tracing.RayProcessorBase

RayProcessorBase.Locals

Field Summary

static java.lang.String

BRIGHTNESS

Fields inherited from class de.grogra.ray2.tracing.RayProcessorBase

enteredSolids, RECURSION_DEPTH, renderer, scene, sumColor

Constructor Summary

PathTracer()

Method Summary

protected void	appendStatisticsImpl(java.lang.StringBuffer stats)
void	initialize(PixelwiseRenderer renderer, Scene scene) With this method the processor is initialized with the scene and other information of a PixelwiseRenderer.
protected void	initLocals()
protected void	mergeStatistics(ProcessorBase src)

Methods inherited from class de.grogra.ray2.tracing.RayProcessorBase

dup, getColorFromRay, getIOR, getLightProcessor, initializeBeforeTracing, record, record, setLightProcessor, setRecursionDepth, unrecord

Methods inherited from class de.grogra.ray2.tracing.ProcessorBase

appendStatistics, clone

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.grogra.ray2.tracing.RayProcessor

appendStatistics

Field Detail

BRIGHTNESS

public static final java.lang.String BRIGHTNESS

See Also:

Constant Field Values

Constructor Detail

PathTracer

public PathTracer()

Method Detail

appendStatisticsImpl

protected void appendStatisticsImpl(java.lang.StringBuffer stats)

Specified by:

appendStatisticsImpl in class ProcessorBase

initialize

public void initialize(PixelwiseRenderer renderer,
                       Scene scene)

Description copied from interface: RayProcessor

With this method the processor is initialized with the scene and other information of a PixelwiseRenderer.

Specified by:

initialize in interface RayProcessor

Overrides:

initialize in class RayProcessorBase

Parameters:

renderer - the renderer which provides the needed information

scene - the scene which is rendered

initLocals

protected void initLocals()

Overrides:

initLocals in class RayProcessorBase

mergeStatistics

protected void mergeStatistics(ProcessorBase src)

Overrides:

mergeStatistics in class RayProcessorBase