Class MultiPointForm

java.lang.Object
uk.ac.starlink.ttools.plot2.layer.MultiPointForm
All Implemented Interfaces:
ModePlotter.Form, ShapeForm
Direct Known Subclasses:
CartesianMultiPointForm, SkyMultiPointForm

public abstract class MultiPointForm extends Object implements ShapeForm
ShapeForm implementation that draws shapes based on a single main position, and a number of additional positions supplied as extra coordinates. The extra coordinates required (defining one or more non-central data positions) are defined by a supplied MultiPointCoordSet and those coordinates are then plotted by a corresponding MultiPointShape.
Since:
18 Feb 2013
Author:
Mark Taylor
  • Field Details

    • AUTOSCALE_PIXELS

      public static final int AUTOSCALE_PIXELS
      Size of longest/characteristic shape in pixels when autoscaled.
      See Also:
  • Constructor Details

    • MultiPointForm

      public MultiPointForm(String name, Icon icon, String description, MultiPointCoordSet extraCoordSet, MultiPointConfigKey shapeKey, ConfigKey<Double> scaleKey, ConfigKey<?>[] otherKeys)
      Constructor.
      Parameters:
      name - shapeform name
      icon - shapeform icon
      description - XML description
      extraCoordSet - defines the extra positional coordinates used to plot multipoint shapes
      shapeKey - config key for the shape; provides option to vary the shape, but any shape specified by it must be expecting data corresponding to the extraCoordSet parameter
      scaleKey - config key for scaling graphical display, or null if no scaling is available
      otherKeys - additional config keys
  • Method Details

    • createReader

      protected abstract MultiPointReader createReader(ConfigMap config)
      Returns an object that can read shapes for use by this form.
      Parameters:
      config - configuration options
      Returns:
      reader
    • getBasicPositionCount

      public int getBasicPositionCount()
      Description copied from interface: ShapeForm
      Returns the number of basic data positions per tuple used by this form.
      Specified by:
      getBasicPositionCount in interface ShapeForm
      Returns:
      number of basic sets of positional coordinates
    • getFormName

      public String getFormName()
      Description copied from interface: ModePlotter.Form
      Returns the user-directed name for this form.
      Specified by:
      getFormName in interface ModePlotter.Form
      Returns:
      form name
    • getFormIcon

      public Icon getFormIcon()
      Description copied from interface: ModePlotter.Form
      Returns an icon to identify this form in the GUI.
      Specified by:
      getFormIcon in interface ModePlotter.Form
      Returns:
      form icon
    • getFormDescription

      public String getFormDescription()
      Description copied from interface: ShapeForm
      Returns a description of this mode as an XML string. The return value should be one or more <p> elements.
      Specified by:
      getFormDescription in interface ShapeForm
      Returns:
      XML description of form
    • getExtraCoords

      public Coord[] getExtraCoords()
      Description copied from interface: ShapeForm
      Returns data coordinates additional to the basic position which are required to plot a point.
      Specified by:
      getExtraCoords in interface ShapeForm
      Returns:
      additional plot coordinates
    • getExtraPositionCount

      public int getExtraPositionCount()
      Description copied from interface: ShapeForm
      Returns the number of extra coordinates that can be interpreted as positions.
      Specified by:
      getExtraPositionCount in interface ShapeForm
      Returns:
      number of positional extra coordinates
    • adjustGeom

      public DataGeom adjustGeom(DataGeom geom, DataSpec dataSpec, ShapeStyle style)
      Description copied from interface: ShapeForm
      Provides a DataGeom to be used by the layer this form makes, given a DataGeom that characterises the plotting environment. The output should be similar to the input, for instance implementing the same plotType-specific DataGeom subtype.

      In most cases the supplied DataGeom instance can be returned unchanged, but instances with special requirements may want to adjust how the data is interpreted.

      Specified by:
      adjustGeom in interface ShapeForm
      Parameters:
      geom - context geom
      dataSpec - data specification with which the geom will be used
      style - style with which the geom will be used
      Returns:
      geom to use for data interpretation, the same or similar to the input
    • getConfigKeys

      public ConfigKey<?>[] getConfigKeys()
      Description copied from interface: ShapeForm
      Returns style configuration keys specific to this form. These keys will be used in the config map supplied to ShapeForm.createOutliner(uk.ac.starlink.ttools.plot2.config.ConfigMap).
      Specified by:
      getConfigKeys in interface ShapeForm
      Returns:
      config keys
    • createOutliner

      public Outliner createOutliner(ConfigMap config)
      Description copied from interface: ShapeForm
      Returns an object which will do the work of drawing shapes when supplied with the appropriate style information and data. The significant keys in the supplied config map are those given by ShapeForm.getConfigKeys().
      Specified by:
      createOutliner in interface ShapeForm
      Parameters:
      config - configuration map from which values for this form's config keys will be extracted
      Returns:
      new outliner object
    • getDefaultScalingDescription

      public static String getDefaultScalingDescription(String shapename)
      Returns XML text suitable for inclusion in a MultiPointForm description explaining how the scaling of marker sizes is controlled.
      Parameters:
      shapename - human-readable name of the shape being plotted by this form
      Returns:
      description text <p> element
    • createThicknessKey

      public static ConfigKey<Integer> createThicknessKey(MultiPointConfigKey shapeKey)
      Creates a config key for line thickness to be used with MultiPointShapes.
      Parameters:
      shapeKey - configured shape to which this relates
      Returns:
      key for line thickness
    • getExtrasCoordIndex

      public static int getExtrasCoordIndex(DataGeom geom)
      Returns the column index in a tuple sequence at which the extra (multi-point) coordinates start.
      Parameters:
      geom - data position geometry
      Returns:
      first non-central position coordinate index (others follow contiguously)