Package org.apache.pdfbox.pdmodel.common.function

Class PDFunctionType3

java.lang.Object

org.apache.pdfbox.pdmodel.common.function.PDFunction

org.apache.pdfbox.pdmodel.common.function.PDFunctionType3

All Implemented Interfaces:

COSObjectable

public class PDFunctionType3
extends PDFunction

This class represents a Type 3 (stitching) function in a PDF document.

Author:

Ben Litchfield

Constructor Summary

Constructors

Constructor	Description
PDFunctionType3(COSBase functionStream)	Constructor.

Method Summary

Modifier and Type	Method	Description
float[]	eval(float[] input)	Evaluates the function at the given input.
COSArray	getBounds()	Returns all bounds values as COSArray.
COSArray	getEncode()	Returns all encode values as COSArray.
COSArray	getFunctions()	Returns all functions values as COSArray.
int	getFunctionType()	Returns the function type.

Methods inherited from class java.lang.Object

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

Methods inherited from class org.apache.pdfbox.pdmodel.common.function.PDFunction

clipToRange, clipToRange, create, eval, getCOSObject, getDomainForInput, getNumberOfInputParameters, getNumberOfOutputParameters, getPDStream, getRangeForOutput, getRangeValues, interpolate, setDomainValues, setRangeValues, toString

Constructor Detail

PDFunctionType3

public PDFunctionType3(COSBase functionStream)

Constructor.

Parameters:

functionStream - The function .

Method Detail

getFunctionType

public int getFunctionType()

Returns the function type. Possible values are: 0 - Sampled function 2 - Exponential interpolation function 3 - Stitching function 4 - PostScript calculator function

Specified by:

getFunctionType in class PDFunction

Returns:

the function type.

eval

public float[] eval(float[] input)
             throws java.io.IOException

Evaluates the function at the given input. ReturnValue = f(input)

Specified by:

eval in class PDFunction

Parameters:

input - The array of input values for the function. In many cases will be an array of a single value, but not always.

Returns:

The of outputs the function returns based on those inputs. In many cases will be an array of a single value, but not always.

Throws:

java.io.IOException - an IOExcpetion is thrown if something went wrong processing the function.

getFunctions

public COSArray getFunctions()

Returns all functions values as COSArray.

Returns:

the functions array.

getBounds

public COSArray getBounds()

Returns all bounds values as COSArray.

Returns:

the bounds array.

getEncode

public COSArray getEncode()

Returns all encode values as COSArray.

Returns:

the encode array.