Module org.sejda.sambox
Package org.sejda.sambox.pdmodel.common.function

Class PDFunctionTypeIdentity

java.lang.Object
org.sejda.sambox.pdmodel.common.function.PDFunction
org.sejda.sambox.pdmodel.common.function.PDFunctionTypeIdentity
All Implemented Interfaces:
COSObjectable
public class PDFunctionTypeIdentity extends PDFunction
The identity function.
Author:
Tilman Hausherr

  • Constructor Details

    • PDFunctionTypeIdentity

      public PDFunctionTypeIdentity(COSBase function)

  • Method Details

    • getFunctionType

      public int getFunctionType()
      Description copied from class: PDFunction
      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)
      Description copied from class: PDFunction
      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.

    • getRangeValues

      protected COSArray getRangeValues()
      Description copied from class: PDFunction
      Returns all ranges for the output values as COSArray . Required for type 0 and type 4 functions
      Overrides:
      getRangeValues in class PDFunction
      Returns:
      the ranges array.

    • toString

      public String toString()
      Description copied from class: PDFunction
      Overrides:
      toString in class PDFunction