de.grogra.imp3d.objects
Class LightDistribution

java.lang.Object
  de.grogra.persistence.ShareableBase
      de.grogra.imp3d.objects.LightDistribution

All Implemented Interfaces:

Manageable, Shareable

Direct Known Subclasses:

LightDistributionResource

public class LightDistribution
extends ShareableBase

Author:

Dietger van Antwerpen This object holds a discretized 2D light distribution over unit hemisphere It is used for computing the cumulative probability distribution for importance sampling The object uses the following mapping from 2D (u,v) coordinates in the discetized unit square [0,1]^2 to spherical coordinates (theta,phi) theta = u * PI phi = v * 2 * PI - PI

Nested Class Summary

static class

LightDistribution.Type

Field Summary

static LightDistribution.Type	$TYPE
static SCOType.Field	height$FIELD
static SCOType.Field	licdf$FIELD
static SCOType.Field	lipdf$FIELD
static SCOType.Field	width$FIELD

Constructor Summary

LightDistribution()

LightDistribution(double[][] lipdf)

Method Summary

static Vector2f	cartesian2map(Vector3f direction)
double	getDensityAt(Vector3f direction)
double[][]	getDistribution()
int	getHeight()
double[]	getLinearCDF()
ManageableType	getManageableType()
double	getPower()
int	getWidth()
static Vector3f	map2cartesian(float r1, float r2)
static void	map2cartesian(Tuple3f out, float r1, float r2)
double	map2direction(Vector3f outDirection, Tuple2d inPoint)
void	setDistribution(double[][] lipdf)
void	setDistributionEx(double[][] lipdf)
void	setPower(double power)

Methods inherited from class de.grogra.persistence.ShareableBase

addReference, appendReferencesTo, fieldModified, getProvider, getStamp, initProvider, manageableReadResolve, manageableWriteReplace, removeReference

Methods inherited from class java.lang.Object

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

Field Detail

$TYPE

public static final LightDistribution.Type $TYPE

height$FIELD

public static final SCOType.Field height$FIELD

licdf$FIELD

public static final SCOType.Field licdf$FIELD

lipdf$FIELD

public static final SCOType.Field lipdf$FIELD

width$FIELD

public static final SCOType.Field width$FIELD

Constructor Detail

LightDistribution

public LightDistribution()

LightDistribution

public LightDistribution(double[][] lipdf)

Method Detail

cartesian2map

public static Vector2f cartesian2map(Vector3f direction)

getDensityAt

public double getDensityAt(Vector3f direction)

getDistribution

public double[][] getDistribution()

getHeight

public int getHeight()

getLinearCDF

public double[] getLinearCDF()

getManageableType

public ManageableType getManageableType()

getPower

public double getPower()

getWidth

public int getWidth()

map2cartesian

public static Vector3f map2cartesian(float r1,
                                     float r2)

map2cartesian

public static void map2cartesian(Tuple3f out,
                                 float r1,
                                 float r2)

map2direction

public double map2direction(Vector3f outDirection,
                            Tuple2d inPoint)

setDistribution

public void setDistribution(double[][] lipdf)

setDistributionEx

public void setDistributionEx(double[][] lipdf)

setPower

public void setPower(double power)