Package uk.ac.starlink.ttools.plot

Class ShaderTweaker

  • All Implemented Interfaces:
    ColorTweaker, DataColorTweaker
    public class ShaderTweaker
extends java.lang.Object
implements DataColorTweaker
    DataColorTweaker implementation which uses an array of Shader objects.
    Since:
    5 Jun 2007
    Author:
    Mark Taylor

    • Constructor Summary

      Constructors 
      Constructor Description
      ShaderTweaker​(int ioff, Shader[] shaders, double[][] ranges, boolean[] logFlags, boolean[] flipFlags)
      Constructor.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static ShaderTweaker createTweaker​(int ioff, PlotState state)
      Returns a new tweaker suitable for a given plot.
      int getNcoord()
      Returns the size of coordinate array which should be submitted to DataColorTweaker.setCoords(double[]).
      boolean setCoords​(double[] coords)
      This implementation returns true unless the scaler results in a NaN for any of the coordinates.
      void tweakColor​(float[] rgba)
      Adjusts in place an array representing the sRGB components of a colour.
      java.awt.Color tweakColor​(java.awt.Color orig)
      Returns a tweaked version of the submitted colour.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ShaderTweaker

        public ShaderTweaker​(int ioff,
                     Shader[] shaders,
                     double[][] ranges,
                     boolean[] logFlags,
                     boolean[] flipFlags)
        Constructor.
        Parameters:
        ioff - offset into supplied coordinate arrays at which auxiliary data starts
        shaders - array of shaders, one for each aux axis
        ranges - array of (low,high) range bounds, one for each aux axis
        logFlags - array of logarithmic scaling flags, one for each aux axis
        flipFlags - array of axis inversion flags, one for each aux axis

    • Method Detail

      • setCoords

        public boolean setCoords​(double[] coords)
        This implementation returns true unless the scaler results in a NaN for any of the coordinates.
        Specified by:
        setCoords in interface DataColorTweaker
        Parameters:
        coords - full coordinate array
        Returns:
        true iff this object has been set to a usable state

      • tweakColor

        public void tweakColor​(float[] rgba)
        Description copied from interface: ColorTweaker
        Adjusts in place an array representing the sRGB components of a colour. Each element is in the range 0..1 on both input and output.
        Specified by:
        tweakColor in interface ColorTweaker
        Parameters:
        rgba - red, green, blue, alpha array

      • tweakColor

        public java.awt.Color tweakColor​(java.awt.Color orig)
        Description copied from interface: ColorTweaker
        Returns a tweaked version of the submitted colour.
        Specified by:
        tweakColor in interface ColorTweaker
        Parameters:
        orig - input colour
        Returns:
        tweaked colour

      • createTweaker

        public static ShaderTweaker createTweaker​(int ioff,
                                          PlotState state)
        Returns a new tweaker suitable for a given plot. Iff no colour tweaking will be performed (that is, if such an object would do no work) then null will be returned.
        Parameters:
        ioff - offset into supplied coordinate arrays at which auxiliary data starts
        state - describes the plot for which this object will be used
        Returns:
        new tweaker, or null