Class PaletteEntryForRange

  • All Implemented Interfaces:
    PaletteEntry

    public class PaletteEntryForRange
    extends Object
    implements PaletteEntry
    Provides a palette entry for colors associated with a range of values. The return value will be interpolated between the minimum and maximum value for this entry.

    In keeping with the conventions of many Geographic Information Systems (GIS) and art applications, this instance "covered" values in the range v0 ≤ f < v1. Thus, a value that exactly matches the upper bound of the range is not considered "covered".

    • Constructor Detail

      • PaletteEntryForRange

        public PaletteEntryForRange​(float v0,
                                    float v1,
                                    Color color0,
                                    Color color1)
        Constructs a palette entry for the range of values v0 ≤ f < v1. The return color value will be interpolated between the two specified colors.
        Parameters:
        v0 - the lower bounds (inclusive) of the covered range of values
        v1 - the upper bounds (non-inclusive) of the covered range of value
        color0 - the color assigned to value v0
        color1 - the color assigned to value v1
      • PaletteEntryForRange

        public PaletteEntryForRange​(float v0,
                                    float v1,
                                    Color color)
        Constructs a palette entry for the range of values v0 ≤ f < v1. A single color will be returned for all values in range
        Parameters:
        v0 - the lower bounds (inclusive) of the covered range of values
        v1 - the upper bounds (non-inclusive) of the covered range of value
        color - the color assigned to value v0
    • Method Detail

      • isCovered

        public boolean isCovered​(float f)
        Description copied from interface: PaletteEntry
        Indicates whether the indicated floating-point value is within the range covered by this palette entry and can be assigned a valid color by the implementation.
        Specified by:
        isCovered in interface PaletteEntry
        Parameters:
        f - a valid floating point value, or a NaN.
        Returns:
        true if the entry can assign a color to the entry; otherwise, false.
      • getARGB

        public int getARGB​(float f)
        Description copied from interface: PaletteEntry
        Gets the integer ARGB color assignment associated with the input value. If the input value is not within the covered range of this instance, the return value is undefined (though the value zero is often used).
        Specified by:
        getARGB in interface PaletteEntry
        Parameters:
        f - valid floating point value, or a NaN.
        Returns:
        an integer value
      • getColor

        public Color getColor​(float f)
        Description copied from interface: PaletteEntry
        Gets the color assignment associated with the input value. If the input value is not within the covered range of this instance, the return value is undefined (though a null return is often used).
        Specified by:
        getColor in interface PaletteEntry
        Parameters:
        f - a valid floating point value, or a NaN.
        Returns:
        a valid color instance or, potentially, a null if the floating point input is not within the covered range.
      • coversSingleEntry

        public boolean coversSingleEntry()
        Description copied from interface: PaletteEntry
        Indicates that the entry covers exactly one unique value (including, potentially, Float.NaN).
        Specified by:
        coversSingleEntry in interface PaletteEntry
        Returns:
        true if the entry covers exactly one unique value
      • getLowerBound

        public float getLowerBound()
        Description copied from interface: PaletteEntry
        Gets the lower-bound value for the palette entry
        Specified by:
        getLowerBound in interface PaletteEntry
        Returns:
        if defined, a valid floating point value; otherwise, a null.
      • getUpperBound

        public float getUpperBound()
        Description copied from interface: PaletteEntry
        Gets the upper-bound value for the palette entry
        Specified by:
        getUpperBound in interface PaletteEntry
        Returns:
        if defined, a valid floating point value; otherwise, a null.