org.apache.commons.math.analysis.interpolation
Class MicrosphereInterpolatingFunction

java.lang.Object
  org.apache.commons.math.analysis.interpolation.MicrosphereInterpolatingFunction

All Implemented Interfaces:

MultivariateRealFunction

public class MicrosphereInterpolatingFunction
extends Object
implements MultivariateRealFunction

Interpolating function that implements the Microsphere Projection.

Version:

$Revision: 990655 $ $Date: 2010-08-29 23:49:40 +0200 (dim. 29 août 2010) $

Constructor Summary

MicrosphereInterpolatingFunction(double[][] xval, double[] yval, int brightnessExponent, int microsphereElements, UnitSphereRandomVectorGenerator rand)

Method Summary

double

value(double[] point) Compute the value for the function at the given point.

Methods inherited from class java.lang.Object

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

Constructor Detail

MicrosphereInterpolatingFunction

public MicrosphereInterpolatingFunction(double[][] xval,
                                        double[] yval,
                                        int brightnessExponent,
                                        int microsphereElements,
                                        UnitSphereRandomVectorGenerator rand)
                                 throws DimensionMismatchException,
                                        NoDataException

Parameters:

xval - the arguments for the interpolation points. xval[i][0] is the first component of interpolation point i, xval[i][1] is the second component, and so on until xval[i][d-1], the last component of that interpolation point (where dimension is thus the dimension of the sampled space).

yval - the values for the interpolation points

brightnessExponent - Brightness dimming factor.

microsphereElements - Number of surface elements of the microsphere.

rand - Unit vector generator for creating the microsphere.

Throws:

DimensionMismatchException - if the lengths of yval and xval (equal to n, the number of interpolation points) do not match, or the the arrays xval[0] ... xval[n], have lengths different from dimension.

NoDataException - if there are no data (xval null or zero length)

Method Detail

value

public double value(double[] point)

Description copied from interface: MultivariateRealFunction

Compute the value for the function at the given point.

Specified by:

value in interface MultivariateRealFunction

Parameters:

point - Interpolation point.

Returns:

the interpolated value.