Package uk.ac.starlink.ttools.plot2.paper

Class PaperTypeSelector

java.lang.Object
uk.ac.starlink.ttools.plot2.paper.PaperTypeSelector
public abstract class PaperTypeSelector extends Object
Provides interface and logic for determining what PaperType (rendering machinery) to use to render a given selection of plot layers to a given output medium. A PlotType provides an instance of this class.
Since:
14 Feb 2013
Author:
Mark Taylor

  • Field Details

    • SELECTOR_2D

      public static PaperTypeSelector SELECTOR_2D
      Default selector for 2d output.

    • SELECTOR_3D

      public static PaperTypeSelector SELECTOR_3D
      Default selector for 3d output.

  • Constructor Details

    • PaperTypeSelector

      public PaperTypeSelector()

  • Method Details

    • getVectorPaperType

      public abstract PaperType getVectorPaperType(LayerOpt[] opts)
      Supplies a PaperType appropriate for rendering to a vector (non-pixellated) output medium.
      Parameters:
      opts - layer options
      Returns:
      paper type

    • getPixelPaperType

      public abstract PaperType getPixelPaperType(LayerOpt[] opts, Compositor compositor)
      Supplies a PaperType appropriate for rendering to a bitmap (pixellated) output medium.
      Parameters:
      opts - layer options
      compositor - compositor for combining colours (relevant only if some transparency is present)
      Returns:
      paper type

    • createSingleSelector

      public static PaperTypeSelector createSingleSelector(PaperType ptype)
      Returns a selector which always returns a fixed paper type. This is only useful for debugging.
      Parameters:
      ptype - fixed paper type
      Returns:
      selector

    • getOpts

      public static LayerOpt[] getOpts(PlotLayer[] layers)
      Returns an array of layer options corresponding to an array of layers.
      Parameters:
      layers - layers
      Returns:
      layer options, same length as layers array