Class PdfType2Function

java.lang.Object

com.itextpdf.kernel.pdf.PdfObjectWrapper<PdfDictionary>

com.itextpdf.kernel.pdf.function.AbstractPdfFunction<PdfDictionary>

com.itextpdf.kernel.pdf.function.PdfType2Function

All Implemented Interfaces:

IPdfFunction

public class PdfType2Function
extends AbstractPdfFunction<PdfDictionary>

This class represents Pdf type 2 function that defines an exponential interpolation of one input value to n output values.

For more info see ISO 32000-1, section 7.10.3 "Type 2 (Exponential Interpolation) Functions".

Field Summary

Fields

Modifier and Type	Field	Description
private double[]	c0
private double[]	c1
private double	n

Constructor Summary

Constructors

Constructor	Description
PdfType2Function(double[] domain, double[] range, double[] c0, double[] c1, double n)
PdfType2Function(float[] domain, float[] range, float[] c0, float[] c1, double n)
PdfType2Function(PdfDictionary dict)	Instantiates a new PdfType2Function instance based on passed PdfDictionary instance.

Method Summary

Modifier and Type	Method	Description
double[]	calculate(double[] input)	Calculates one set of input components to one set of output components.
final double[]	getC0()	Gets values of C0 array.
final double[]	getC1()	Gets values of C1 array.
final double	getN()	Gets value of N field.
final int	getOutputSize()	Gets output size of function.
private static double[]	initializeCArray(PdfArray c, PdfArray otherC, PdfArray range, double defaultValue)
final void	setC0(double[] value)	Sets values of C0 array.
final void	setC1(double[] value)	Sets values of C1 array.
final void	setN(double value)	sets value of N field.

Methods inherited from class AbstractPdfFunction

calculateFromByteArray, calculateFromByteArray, checkCompatibilityWithColorSpace, clip, clipInput, clipOutput, convertFloatArrayToDoubleArray, getAsPdfObject, getDomain, getFunctionType, getInputSize, getRange, isWrappedObjectMustBeIndirect, normalize, setDomain, setRange

Methods inherited from class PdfObjectWrapper

ensureObjectIsAddedToDocument, ensureUnderlyingObjectHasIndirectReference, flush, getPdfObject, isFlushed, makeIndirect, makeIndirect, markObjectAsIndirect, setForbidRelease, setModified, setPdfObject, unsetForbidRelease

Methods inherited from class Object

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

Field Details

c0

private double[] c0

c1

private double[] c1

n

private double n

Constructor Details

PdfType2Function

public PdfType2Function(PdfDictionary dict)

Instantiates a new PdfType2Function instance based on passed PdfDictionary instance.

Parameters:

dict - the function dictionary

PdfType2Function

public PdfType2Function(double[] domain,
 double[] range,
 double[] c0,
 double[] c1,
 double n)

PdfType2Function

public PdfType2Function(float[] domain,
 float[] range,
 float[] c0,
 float[] c1,
 double n)

Method Details

calculate

public double[] calculate(double[] input)

Description copied from interface: IPdfFunction

Calculates one set of input components to one set of output components.

Parameters:

input - The input values size must contain IPdfFunction.getInputSize() items

Returns:

an array the size of IPdfFunction.getOutputSize() items containing the result

getOutputSize

public final int getOutputSize()

Gets output size of function.

If Range field is absent, the size of C0 array will be returned.

Specified by:

getOutputSize in interface IPdfFunction

Overrides:

getOutputSize in class AbstractPdfFunction<PdfDictionary>

Returns:

output size of function

getC0

public final double[] getC0()

Gets values of C0 array.

Returns:

the values of C0 array

setC0

public final void setC0(double[] value)

Sets values of C0 array.

Parameters:

value - the values of C0 array

getC1

public final double[] getC1()

Gets values of C1 array.

Returns:

the values of C1 array

setC1

public final void setC1(double[] value)

Sets values of C1 array.

Parameters:

value - the values of C1 array

getN

public final double getN()

Gets value of N field.

Returns:

the value of N field

setN

public final void setN(double value)

sets value of N field.

Parameters:

value - the value of N field

initializeCArray

private static double[] initializeCArray(PdfArray c,
 PdfArray otherC,
 PdfArray range,
 double defaultValue)