Module com.marginallyclever.robotoverlord

Package com.marginallyclever.ro3.apps.pathtracer

Class PathTracerHelper

java.lang.Object

com.marginallyclever.ro3.apps.pathtracer.PathTracerHelper

public class PathTracerHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
PathTracerHelper()

Method Summary

Modifier and Type	Method	Description
static javax.vecmath.Vector3d	getRandomCosineWeightedHemisphere(HaltonWithMemory halton, javax.vecmath.Vector3d normal)	Get a random direction on the hemisphere defined by the normal, with cosine-weighted distribution.
static javax.vecmath.Vector3d	getRandomUnitHemisphere(HaltonWithMemory halton, javax.vecmath.Vector3d normal)	Get a random direction on the hemisphere defined by the normal.
static javax.vecmath.Vector3d	getRandomUnitVector(HaltonWithMemory halton)

Methods inherited from class java.lang.Object

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

Constructor Details

PathTracerHelper

public PathTracerHelper()

Method Details

getRandomUnitVector

public static javax.vecmath.Vector3d getRandomUnitVector(HaltonWithMemory halton)

Returns:

a random vector on the unit sphere

getRandomCosineWeightedHemisphere

public static javax.vecmath.Vector3d getRandomCosineWeightedHemisphere(HaltonWithMemory halton,
 javax.vecmath.Vector3d normal)

Get a random direction on the hemisphere defined by the normal, with cosine-weighted distribution. This is used for diffuse reflection.

Parameters:

halton -

normal -

Returns:

getRandomUnitHemisphere

public static javax.vecmath.Vector3d getRandomUnitHemisphere(HaltonWithMemory halton,
 javax.vecmath.Vector3d normal)

Get a random direction on the hemisphere defined by the normal.

This is used for diffuse reflection.

Parameters:

normal - the normal of the surface at the hit point

Returns:

a random direction on the hemisphere defined by the normal