Module raytracer
Package org.sunflow.image

Class IrregularSpectralCurve

java.lang.Object
org.sunflow.image.SpectralCurve
org.sunflow.image.IrregularSpectralCurve
All Implemented Interfaces:
Serializable
public class IrregularSpectralCurve extends SpectralCurve
This class allows spectral curves to be defined from irregularly sampled data. Note that the wavelength array is assumed to be sorted low to high. Any values beyond the defined range will simply be extended to infinity from the end points. Points inside the valid range will be linearly interpolated between the two nearest samples. No explicit error checking is performed, but this class will run into ArrayIndexOutOfBoundsExceptions if the array lengths don't match.
See Also:

  • Constructor Details

    • IrregularSpectralCurve

      public IrregularSpectralCurve(float[] wavelengths, float[] amplitudes)
      Define an irregular spectral curve from the provided (sorted) wavelengths and amplitude data. The wavelength array is assumed to contain values in nanometers. Array lengths must match.
      Parameters:
      wavelengths - sampled wavelengths in nm
      amplitudes - amplitude of the curve at the sampled points

  • Method Details

    • sample

      public float sample(float lambda)
      Description copied from class: SpectralCurve
      This function determines the actual spectral curve data. Note that the lambda parameter is assumed to be in nanometers.
      Specified by:
      sample in class SpectralCurve
      Parameters:
      lambda - wavelength to sample in nanometers
      Returns:
      the value of the spectral curve at this point