protected PDDictionaryFunction(int functionType) 
{
        function = new COSDictionary();
        function.setInt( "FunctionType", functionType );
}

Constructor to create a new blank function, should only be called by subclasses.

Parameters:

functionType - An integer describing the function type, only 0,2,3,4 are defined by the PDF sepc.

 public PDDictionaryFunction(COSDictionary functionDictionary) 
{
        function = functionDictionary;
}

Constructor.

Parameters:

functionDictionary - The prepopulated function dictionary.

 public COSDictionary getCOSDictionary() 
{
        return function;
}

Get the underlying cos dictionary.

 public COSBase getCOSObject() 
{
        return function;
}

{@inheritDoc}

 public PDRange getDomainForInput(int n) 
{
        COSArray rangeArray = getRangeArray( "Domain", n );
        return new PDRange( rangeArray, n );
}

{@inheritDoc}

 public int getNumberOfInputParameters() 
{
        COSArray array = getRangeArray( "Domain", 0 );
        return array.size() / 2;
}

{@inheritDoc}

 public int getNumberOfOutputParameters() 
{
        COSArray array = getRangeArray( "Range", 0 );
        return array.size() / 2;
}

{@inheritDoc}

 protected COSArray getRangeArray(String fieldName,
    int n) 
{
        COSArray rangeArray = (COSArray)function.getDictionaryObject( COSName.getPDFName( "Range" ) );
        if( rangeArray == null )
        {
            rangeArray = new COSArray();
            function.setItem( fieldName, rangeArray );
            while( rangeArray.size() <  n*2 )
            {
                rangeArray.add( new COSFloat( 0 ) );
                rangeArray.add( new COSFloat( 0 ) );
            }
        }
        return rangeArray;
}

 public PDRange getRangeForOutput(int n) 
{
        COSArray rangeArray = getRangeArray( "Range", n );
        return new PDRange( rangeArray, n );
}

{@inheritDoc}

 public  void setDomainForInput(PDRange range,
    int n) 
{
        COSArray rangeArray = getRangeArray("Domain", n );
        rangeArray.set( n*2, new COSFloat( range.getMin() ) );
        rangeArray.set( n*2+1, new COSFloat( range.getMax() ) );
}

{@inheritDoc}

 public  void setRangeForOutput(PDRange range,
    int n) 
{
        COSArray rangeArray = getRangeArray("Range", n );
        rangeArray.set( n*2, new COSFloat( range.getMin() ) );
        rangeArray.set( n*2+1, new COSFloat( range.getMax() ) );
}

{@inheritDoc}