Class LabColor

  • All Implemented Interfaces:
    java.io.Serializable

    public class LabColor
    extends java.awt.color.ColorSpace
    A ColorSpace for Lab color
    See Also:
    Serialized Form
    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) float[] black  
      (package private) static java.awt.color.ColorSpace cie  
      (package private) float[] range  
      (package private) float[] white  
      • Fields inherited from class java.awt.color.ColorSpace

        CS_CIEXYZ, CS_GRAY, CS_LINEAR_RGB, CS_PYCC, CS_sRGB, TYPE_2CLR, TYPE_3CLR, TYPE_4CLR, TYPE_5CLR, TYPE_6CLR, TYPE_7CLR, TYPE_8CLR, TYPE_9CLR, TYPE_ACLR, TYPE_BCLR, TYPE_CCLR, TYPE_CMY, TYPE_CMYK, TYPE_DCLR, TYPE_ECLR, TYPE_FCLR, TYPE_GRAY, TYPE_HLS, TYPE_HSV, TYPE_Lab, TYPE_Luv, TYPE_RGB, TYPE_XYZ, TYPE_YCbCr, TYPE_Yxy
    • Constructor Summary

      Constructors 
      Constructor Description
      LabColor​(PDFObject obj)
      Create a new Lab color space object, given the description in a PDF dictionary.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      float[] fromCIEXYZ​(float[] colorvalue)
      convert from CIEXYZ to Lab.
      float[] fromRGB​(float[] rgbvalue)
      convert from RGB to Lab.
      int getNumComponents()
      get the number of components for this color space (3)
      int getType()
      get the type of this colorspace (TYPE_Lab)
      float stage2​(float s1)
      Stage 2 of the conversion algorithm.
      float[] toCIEXYZ​(float[] colorvalue)
      convert from Lab to CIEXYZ.
      float[] toRGB​(float[] comp)
      convert from Lab to RGB
      • Methods inherited from class java.awt.color.ColorSpace

        getInstance, getMaxValue, getMinValue, getName, isCS_sRGB
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • white

        float[] white
      • black

        float[] black
      • range

        float[] range
      • cie

        static java.awt.color.ColorSpace cie
    • Constructor Detail

      • LabColor

        public LabColor​(PDFObject obj)
                 throws java.io.IOException
        Create a new Lab color space object, given the description in a PDF dictionary.
        Parameters:
        obj - a dictionary that contains an Array of 3 Numbers for "WhitePoint" and "BlackPoint", and an array of 4 Numbers for "Range".
        Throws:
        java.io.IOException
    • Method Detail

      • getNumComponents

        public int getNumComponents()
        get the number of components for this color space (3)
        Overrides:
        getNumComponents in class java.awt.color.ColorSpace
      • stage2

        public final float stage2​(float s1)
        Stage 2 of the conversion algorithm. Pulled out because it gets invoked for each component
      • toRGB

        public float[] toRGB​(float[] comp)
        convert from Lab to RGB
        Specified by:
        toRGB in class java.awt.color.ColorSpace
        Parameters:
        comp - the Lab values (0-1)
        Returns:
        the RGB values (0-1)
      • fromRGB

        public float[] fromRGB​(float[] rgbvalue)
        convert from RGB to Lab. NOT IMPLEMENTED
        Specified by:
        fromRGB in class java.awt.color.ColorSpace
      • fromCIEXYZ

        public float[] fromCIEXYZ​(float[] colorvalue)
        convert from CIEXYZ to Lab. NOT IMPLEMENTED
        Specified by:
        fromCIEXYZ in class java.awt.color.ColorSpace
      • getType

        public int getType()
        get the type of this colorspace (TYPE_Lab)
        Overrides:
        getType in class java.awt.color.ColorSpace
      • toCIEXYZ

        public float[] toCIEXYZ​(float[] colorvalue)
        convert from Lab to CIEXYZ. NOT IMPLEMENTED
        Specified by:
        toCIEXYZ in class java.awt.color.ColorSpace