Class FunctionType2

java.lang.Object
com.sun.pdfview.function.PDFFunction
com.sun.pdfview.function.FunctionType2

public class FunctionType2 extends PDFFunction
A type 2 function is an exponential interpolation function, which maps from one input value to n output values using a simple exponential formula.
  • Field Details

    • c0

      private float[] c0
      the function's value at zero for the n outputs
    • c1

      private float[] c1
      the function's value at one for the n outputs
    • n

      private float n
      the exponent
  • Constructor Details

    • FunctionType2

      public FunctionType2()
      Creates a new instance of FunctionType2
  • Method Details

    • parse

      protected void parse(PDFObject obj) throws IOException
      Read the zeros, ones and exponent
      Specified by:
      parse in class PDFFunction
      Throws:
      IOException
    • doFunction

      protected void doFunction(float[] inputs, int inputOffset, float[] outputs, int outputOffset)
      Calculate the function value for the input. For each output (j), the function value is: C0(j) + x^N * (C1(j) - C0(j))
      Specified by:
      doFunction in class PDFFunction
      Parameters:
      inputs - guaranteed to be at least as big as getNumInputs() and all values within range
      inputOffset - the offset into the inputs array to read from
      outputs - guaranteed to be at least as big as getNumOutputs(), but not yet clipped to domain
      outputOffset - the offset into the output array to write to
    • getN

      public float getN()
      Get the exponent
    • setN

      protected void setN(float n)
      Set the exponent
    • getC0

      public float getC0(int index)
      Get the values at zero
    • setC0

      protected void setC0(float[] c0)
      Set the values at zero
    • getC1

      public float getC1(int index)
      Get the values at one
    • setC1

      protected void setC1(float[] c1)
      Set the values at one