de.grogra.imp3d.spectral

Class SpectralCurve

java.lang.Object

de.grogra.persistence.ShareableBase

de.grogra.imp3d.spectral.SpectralCurve

All Implemented Interfaces:

Manageable, Shareable

Direct Known Subclasses:

BlackbodySpectralCurve, ConstantSpectralCurve, IrregularSpectralCurve, RegularSpectralCurve, RGBSpectralCurve

public abstract class SpectralCurve
extends ShareableBase

This class is an abstract interface to sampled or analytic spectral data.

Field Summary

Fields

Modifier and Type	Field and Description
static Node.NType	$TYPE

Constructor Summary

Constructors

Constructor and Description
SpectralCurve()

Method Summary

Methods

Modifier and Type	Method and Description
abstract float	sample(float lambda) This function determines the actual spectral curve data.
org.sunflow.image.XYZColor	toXYZ() Convert this curve to a tristimulus CIE XYZ color by integrating against the CIE color matching functions.
static org.sunflow.image.XYZColor	toXYZ(float lambda, float amplitude)

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

Methods inherited from interface de.grogra.persistence.Manageable

getManageableType

Field Detail

$TYPE

public static final Node.NType $TYPE

Constructor Detail

SpectralCurve

public SpectralCurve()

Method Detail

sample

public abstract float sample(float lambda)

This function determines the actual spectral curve data. Note that the lambda parameter is assumed to be in nanometers.

Parameters:

lambda - wavelength to sample in nanometers

Returns:

the value of the spectral curve at this point

toXYZ

public final org.sunflow.image.XYZColor toXYZ()

Convert this curve to a tristimulus CIE XYZ color by integrating against the CIE color matching functions.

Returns:

XYZColor that represents this spectra

toXYZ

public static final org.sunflow.image.XYZColor toXYZ(float lambda,
                               float amplitude)