org.sunflow.image
Class SpectralCurve

java.lang.Object
  org.sunflow.image.SpectralCurve

Direct Known Subclasses:

BlackbodySpectrum, ChromaticitySpectrum, ConstantSpectralCurve, IrregularSpectralCurve, RegularSpectralCurve

public abstract class SpectralCurve
extends java.lang.Object

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

Constructor Summary

SpectralCurve()

Method Summary

abstract float	sample(float lambda) This function determines the actual spectral curve data.
XYZColor	toXYZ() Convert this curve to a tristimulus CIE XYZ color by integrating against the CIE color matching functions.

Methods inherited from class java.lang.Object

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

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 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