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## com.bbn.openmap.layer
Class GraticuleLayer

    java.lang.Object
      java.awt.Component
          java.awt.Container
              javax.swing.JComponent
                  com.bbn.openmap.Layer
                      com.bbn.openmap.layer.OMGraphicHandlerLayer
                          com.bbn.openmap.layer.GraticuleLayer

All Implemented Interfaces:
  java.awt.event.ActionListener, java.beans.beancontext.BeanContextChild, java.beans.beancontext.BeanContextMembershipListener, java.util.EventListener, GestureResponsePolicy, java.awt.image.ImageObserver, java.awt.MenuContainer, ProjectionListener, ProjectionPainter, PropertyConsumer, java.io.Serializable

public class GraticuleLayer
extends OMGraphicHandlerLayer
implements java.awt.event.ActionListener

Layer that draws graticule lines. If the showRuler property is set to true, then longitude values are displayed on the bottom of the map, and latitude values are displayed on the left side. If the show1And5Lines property is true, then 5 degree lines are drawn when there are <= threshold ten degree latitude or longitude lines, and 1 degree lines are drawn when there are <= threshold five degree latitude or longitude degree lines.

The openmap.properties file can control the layer with the following settings: ``

       # Show lat / lon spacing labels
       graticule.showRuler=true
       graticule.show1And5Lines=true
       # Controls when the five degree lines and one degree lines kick in
       #- when there is less than the threshold of ten degree lat or lon
       #lines, five degree lines are drawn. The same relationship is there
       #for one to five degree lines.
       graticule.threshold=2
       # the color of 10 degree spacing lines (Hex ARGB)
       graticule.10DegreeColor=FF000000
       # the color of 5 degree spacing lines (Hex ARGB)
       graticule.5DegreeColor=C7009900
       # the color of 1 degree spacing lines (Hex ARGB)
       graticule.1DegreeColor=C7003300
       # the color of the equator (Hex ARGB)
       graticule.equatorColor=FFFF0000
       # the color of the international dateline (Hex ARGB)
       graticule.datelineColor=7F000099
       # the color of the special lines (Hex ARGB)
       graticule.specialLineColor=FF000000
       # the color of the labels (Hex ARGB)
       graticule.textColor=FF000000

In addition, you can get this layer to work with the OpenMap viewer by editing your openmap.properties file: `

       # layers
       openmap.layers=graticule ...
       # class
       graticule.class=com.bbn.openmap.layer.GraticuleLayer
       # name
       graticule.prettyName=Graticule

`

See Also:
  Serialized Form

Nested Class Summary

Nested classes inherited from class javax.swing.JComponent
`javax.swing.JComponent.AccessibleJComponent`

Nested classes inherited from class java.awt.Container
`java.awt.Container.AccessibleAWTContainer`

Nested classes inherited from class java.awt.Component
`java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy`

Field Summary
`protected java.awt.Color` | `belowOneDegreeColor`
`static java.lang.String` | `BelowOneDegreeColorProperty`
`protected boolean` | `boxy` Flag for lineType - true is LINETYPE_STRAIGHT, false is LINETYPE_GREATCIRCLE.
`protected java.awt.Color` | `dateLineColor`
`static java.lang.String` | `DateLineColorProperty`
`protected java.lang.String` | `defaultBelowOneDegreeColorString`
`protected java.lang.String` | `defaultDateLineColorString`
`protected java.lang.String` | `defaultEquatorColorString`
`protected java.lang.String` | `defaultFiveDegreeColorString`
`protected java.lang.String` | `defaultOneDegreeColorString`
`protected boolean` | `defaultShowBelowOneLines`
`protected boolean` | `defaultShowOneAndFiveLines`
`protected boolean` | `defaultShowRuler`
`protected java.lang.String` | `defaultSpecialLineColorString`
`protected java.lang.String` | `defaultTenDegreeColorString`
`protected java.lang.String` | `defaultTextColorString`
`protected int` | `defaultThreshold`
`protected java.awt.Color` | `equatorColor`
`static java.lang.String` | `EquatorColorProperty`
`protected java.awt.Color` | `fiveDegreeColor`
`static java.lang.String` | `FiveDegreeColorProperty`
`protected java.awt.Font` | `font`
`protected int` | `fontSize`
`static java.lang.String` | `FontSizeProperty`
`protected I18n` | `i18n`
`protected OMGraphicList` | `markerLines` The equator, dateline and meridian lines, premade.
`protected java.awt.Color` | `oneDegreeColor`
`static java.lang.String` | `OneDegreeColorProperty`
`protected javax.swing.Box` | `palette` The user interface palette for the DTED layer.
`protected javax.swing.JCheckBox` | `show15Button`
`protected javax.swing.JCheckBox` | `showBelow1Button`
`protected boolean` | `showBelowOneLines`
`static java.lang.String` | `ShowBelowOneProperty`
`protected boolean` | `showOneAndFiveLines`
`static java.lang.String` | `ShowOneAndFiveProperty`
`protected boolean` | `showRuler`
`protected javax.swing.JCheckBox` | `showRulerButton`
`static java.lang.String` | `ShowRulerProperty`
`protected java.awt.Color` | `specialLineColor`
`static java.lang.String` | `SpecialLineColorProperty`
`protected java.awt.Color` | `tenDegreeColor`
`static java.lang.String` | `TenDegreeColorProperty`
`protected OMGraphicList` | `tenDegreeLines` The ten degree latitude and longitude lines, premade.
`protected java.awt.Color` | `textColor`
`static java.lang.String` | `TextColorProperty`
`protected int` | `threshold` Threshold is the total number of ten lines on the screen before the five lines appear, and the total number of five lines on the screen before the one lines appear.
`static java.lang.String` | `ThresholdProperty`

Fields inherited from class com.bbn.openmap.layer.OMGraphicHandlerLayer
`consumeEvents, ConsumeEventsProperty, filter, interruptable, InterruptableProperty, layerWorker, LAYERWORKER_LOCK, mouseEventInterpreter, mouseModeIDs, MouseModesProperty, projectionChangePolicy, ProjectionChangePolicyProperty, renderPolicy, RenderPolicyProperty, selectedList, TransparencyProperty`

Fields inherited from class com.bbn.openmap.Layer
`addAsBackground, AddAsBackgroundProperty, addToBeanContext, AddToBeanContextProperty, attributes, autoPalette, AutoPaletteProperty, beanContextChildSupport, DisplayPaletteCmd, DisplayPropertiesCmd, doHack, HidePaletteCmd, IDListeners, localHackList, lsListeners, maxScale, MaxScaleProperty, minScale, MinScaleProperty, paletteListener, PrettyNameProperty, propertyPrefix, RedrawCmd, removable, RemovableProperty, SWING_PACKAGE, windowSupport`

Fields inherited from class javax.swing.JComponent
`accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

Fields inherited from class java.awt.Component
`BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

Fields inherited from interface com.bbn.openmap.PropertyConsumer
`EditorProperty, initPropertiesProperty, LabelEditorProperty, ScopedEditorProperty`

Fields inherited from interface java.awt.image.ImageObserver
`ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

Constructor Summary
`GraticuleLayer()` Construct the GraticuleLayer.

Method Summary
`void` | `actionPerformed(java.awt.event.ActionEvent e)` Used just for the redraw button.
`protected OMGraphicList` | `constructGraticuleLines()` Create the graticule lines.
`protected OMGraphicList` | `constructGraticuleLines(float up, float down, float left, float right, int showWhichLines)` Construct the five degree and one degree graticule lines, depending on the showWhichLines setting.
`protected OMGraphicList` | `constructMarkerLines()` Constructs the Dateline and Prime Meridian lines.
`protected OMGraphicList` | `constructTenDegreeLines()` Create the ten degree lines.
`protected OMGraphicList` | `constructTensLabels(float up, float down, float left, float right, boolean doLats)` Constructs the labels for the tens lines.
`protected int` | `evaluateSpacing(float up, float down, float left, float right)` Figure out which graticule lines should be drawn based on the treshold set in the layer, and the coordinates of the screen.
`java.awt.Component` | `getGUI()` Creates the interface palette.
`java.util.Properties` | `getProperties(java.util.Properties properties)` The properties and prefix are managed and decoded here, for the standard uses of the GraticuleLayer.
`java.util.Properties` | `getPropertyInfo(java.util.Properties properties)` The properties and prefix are managed and decoded here, for the standard uses of the GraticuleLayer.
`boolean` | `getShowBelowOneLines()`
`boolean` | `getShowOneAndFiveLines()`
`boolean` | `getShowRuler()`
`OMGraphicList` | `prepare()` Creates the OMGraphic list with graticule lines.
`void` | `projectionChanged(ProjectionEvent e)` Invoked when the projection has changed or this Layer has been added to the MapBean.
`void` | `renderDataForProjection(Projection proj, java.awt.Graphics g)` Implementing the ProjectionPainter interface.
`protected void` | `setLineTypeAndProject(OMGraphicList list, int lineType)` Take a graphic list, and set all the items on the list to the line type specified, and project them into the current projection.
`void` | `setProperties(java.lang.String prefix, java.util.Properties properties)` The properties and prefix are managed and decoded here, for the standard uses of the GraticuleLayer.
`void` | `setShowBelowOneLines(boolean set)`
`void` | `setShowOneAndFiveLines(boolean set)`
`void` | `setShowRuler(boolean set)`

Methods inherited from class com.bbn.openmap.layer.OMGraphicHandlerLayer
`canSetList, copy, createLayerWorker, cut, deselect, doAction, doPrepare, filter, filter, filter, getConsumeEvents, getFilter, getInfoText, getItemsForMapMenu, getItemsForOMGraphicMenu, getLayerWorker, getList, getMapMouseListener, getMouseEventInterpreter, getMouseModeIDsForEvents, getProjectionChangePolicy, getRenderPolicy, getSelected, getToolTipTextFor, getTransparency, getTransparencyAdjustmentPanel, highlight, interrupt, isCancelled, isHighlightable, isInterruptable, isSelectable, isWorking, leftClick, mouseOver, paint, paste, receivesMapEvents, resetFiltering, select, setCancelled, setConsumeEvents, setFilter, setInterruptable, setLayerWorker, setList, setMouseEventInterpreter, setMouseModeIDsForEvents, setProjectionChangePolicy, setRenderPolicy, setTransparency, supportsSQL, unhighlight, workerComplete`

Methods inherited from class com.bbn.openmap.Layer
`addComponentListener, added, addInfoDisplayListener, addLayerStatusListener, addMouseListener, addVetoableChangeListener, childrenAdded, childrenRemoved, clearListeners, connectToBeanContext, createWindowSupport, finalize, findAndInit, findAndInit, findAndUndo, fireHideToolTip, firePaletteEvent, fireRequestBrowserContent, fireRequestBrowserContent, fireRequestCursor, fireRequestInfoLine, fireRequestInfoLine, fireRequestInfoLine, fireRequestMessage, fireRequestMessage, fireRequestToolTip, fireRequestToolTip, fireRequestURL, fireRequestURL, fireStatusUpdate, fireStatusUpdate, fireVetoableChange, getAddAsBackground, getAddToBeanContext, getAttribute, getBeanContext, getIcon, getMaxScale, getMinScale, getPackage, getPalette, getProjection, getPropertyPrefix, getWindowSupport, hasGUI, hidePalette, isAutoPalette, isProjectionOK, isRemovable, notifyHideHack, putAttribute, removeComponentListener, removeConfirmed, removed, removeInfoDisplayListener, removeLayerStatusListener, removeVetoableChangeListener, repaint, resetPalette, setAddAsBackground, setAddToBeanContext, setAutoPalette, setBeanContext, setIcon, setMaxScale, setMinScale, setName, setPaletteVisible, setProjection, setProjection, setProperties, setPropertyPrefix, setRemovable, setVisible, setWindowSupport, showPalette`

Methods inherited from class javax.swing.JComponent
`addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, unregisterKeyboardAction, update, updateUI`

Methods inherited from class java.awt.Container
`add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree`

Methods inherited from class java.awt.Component
`action, add, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle`

Methods inherited from class java.lang.Object
`clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.beans.beancontext.BeanContextChild
`addPropertyChangeListener, removePropertyChangeListener`

Field Detail

### i18n

    protected I18n i18n

### defaultShowRuler

    protected boolean defaultShowRuler

### defaultShowOneAndFiveLines

    protected boolean defaultShowOneAndFiveLines

### defaultShowBelowOneLines

    protected boolean defaultShowBelowOneLines

### defaultThreshold

    protected int defaultThreshold

### boxy

    protected boolean boxy

  Flag for lineType - true is LINETYPE_STRAIGHT, false is LINETYPE_GREATCIRCLE.

### threshold

    protected int threshold

  Threshold is the total number of ten lines on the screen before the five lines appear, and the total number of five lines on the screen before the one lines appear.

### tenDegreeLines

    protected OMGraphicList tenDegreeLines

  The ten degree latitude and longitude lines, premade.

### markerLines

    protected OMGraphicList markerLines

  The equator, dateline and meridian lines, premade.

### showOneAndFiveLines

    protected boolean showOneAndFiveLines

### showBelowOneLines

    protected boolean showBelowOneLines

### showRuler

    protected boolean showRuler

### font

    protected java.awt.Font font

### fontSize

    protected int fontSize

### tenDegreeColor

    protected java.awt.Color tenDegreeColor

### fiveDegreeColor

    protected java.awt.Color fiveDegreeColor

### oneDegreeColor

    protected java.awt.Color oneDegreeColor

### belowOneDegreeColor

    protected java.awt.Color belowOneDegreeColor

### equatorColor

    protected java.awt.Color equatorColor

### dateLineColor

    protected java.awt.Color dateLineColor

### specialLineColor

    protected java.awt.Color specialLineColor

### textColor

    protected java.awt.Color textColor

### defaultTenDegreeColorString

    protected java.lang.String defaultTenDegreeColorString

### defaultFiveDegreeColorString

    protected java.lang.String defaultFiveDegreeColorString

### defaultOneDegreeColorString

    protected java.lang.String defaultOneDegreeColorString

### defaultBelowOneDegreeColorString

    protected java.lang.String defaultBelowOneDegreeColorString

### defaultEquatorColorString

    protected java.lang.String defaultEquatorColorString

### defaultDateLineColorString

    protected java.lang.String defaultDateLineColorString

### defaultSpecialLineColorString

    protected java.lang.String defaultSpecialLineColorString

### defaultTextColorString

    protected java.lang.String defaultTextColorString

### TenDegreeColorProperty

    public static final java.lang.String TenDegreeColorProperty

See Also:
  Constant Field Values

### FiveDegreeColorProperty

    public static final java.lang.String FiveDegreeColorProperty

See Also:
  Constant Field Values

### OneDegreeColorProperty

    public static final java.lang.String OneDegreeColorProperty

See Also:
  Constant Field Values

### BelowOneDegreeColorProperty

    public static final java.lang.String BelowOneDegreeColorProperty

See Also:
  Constant Field Values

### EquatorColorProperty

    public static final java.lang.String EquatorColorProperty

See Also:
  Constant Field Values

### DateLineColorProperty

    public static final java.lang.String DateLineColorProperty

See Also:
  Constant Field Values

### SpecialLineColorProperty

    public static final java.lang.String SpecialLineColorProperty

See Also:
  Constant Field Values

### TextColorProperty

    public static final java.lang.String TextColorProperty

See Also:
  Constant Field Values

### ThresholdProperty

    public static final java.lang.String ThresholdProperty

See Also:
  Constant Field Values

### ShowRulerProperty

    public static final java.lang.String ShowRulerProperty

See Also:
  Constant Field Values

### ShowOneAndFiveProperty

    public static final java.lang.String ShowOneAndFiveProperty

See Also:
  Constant Field Values

### ShowBelowOneProperty

    public static final java.lang.String ShowBelowOneProperty

See Also:
  Constant Field Values

### FontSizeProperty

    public static final java.lang.String FontSizeProperty

See Also:
  Constant Field Values

### showRulerButton

    protected javax.swing.JCheckBox showRulerButton

### show15Button

    protected javax.swing.JCheckBox show15Button

### showBelow1Button

    protected javax.swing.JCheckBox showBelow1Button

### palette

    protected javax.swing.Box palette

  The user interface palette for the DTED layer.

Constructor Detail

### GraticuleLayer

    public GraticuleLayer()

  Construct the GraticuleLayer.

Method Detail

### setProperties

    public void setProperties(java.lang.String prefix,
                              java.util.Properties properties)

  The properties and prefix are managed and decoded here, for the standard uses of the GraticuleLayer.

  Specified by:
    `setProperties` in interface `PropertyConsumer`
  Overrides:
    `setProperties` in class `OMGraphicHandlerLayer`
  Parameters:
    `prefix` - string prefix used in the properties file for this layer.
    `properties` - the properties set in the properties file.

### setShowOneAndFiveLines

    public void setShowOneAndFiveLines(boolean set)

### setShowBelowOneLines

    public void setShowBelowOneLines(boolean set)

### getShowOneAndFiveLines

    public boolean getShowOneAndFiveLines()

### getShowBelowOneLines

    public boolean getShowBelowOneLines()

### setShowRuler

    public void setShowRuler(boolean set)

### getShowRuler

    public boolean getShowRuler()

### getProperties

    public java.util.Properties getProperties(java.util.Properties properties)

  The properties and prefix are managed and decoded here, for the standard uses of the GraticuleLayer.

  Specified by:
    `getProperties` in interface `PropertyConsumer`
  Overrides:
    `getProperties` in class `OMGraphicHandlerLayer`
  Parameters:
    `properties` - the properties set in the properties file.

### getPropertyInfo

    public java.util.Properties getPropertyInfo(java.util.Properties properties)

  The properties and prefix are managed and decoded here, for the standard uses of the GraticuleLayer.

  Specified by:
    `getPropertyInfo` in interface `PropertyConsumer`
  Overrides:
    `getPropertyInfo` in class `OMGraphicHandlerLayer`
  Parameters:
    `properties` - the properties set in the properties file.

### renderDataForProjection

    public void renderDataForProjection(Projection proj,
                                        java.awt.Graphics g)

  Implementing the ProjectionPainter interface.

  Specified by:
    `renderDataForProjection` in interface `ProjectionPainter`
  Overrides:
    `renderDataForProjection` in class `OMGraphicHandlerLayer`
  Parameters:
    `proj` - Projection of the map.
    `g` - java.awt.Graphics to draw into.

### projectionChanged

    public void projectionChanged(ProjectionEvent e)

  Invoked when the projection has changed or this Layer has been added to the MapBean.

  Perform some extra checks to see if reprojection of the graphics is really necessary.

  Specified by:
    `projectionChanged` in interface `ProjectionListener`
  Overrides:
    `projectionChanged` in class `OMGraphicHandlerLayer`
  Parameters:
    `e` - ProjectionEvent
  See Also:
    `ProjectionChangePolicy`, `StandardPCPolicy`, `ListResetPCPolicy`

### prepare

    public OMGraphicList prepare()

  Creates the OMGraphic list with graticule lines.

  Overrides:
    `prepare` in class `OMGraphicHandlerLayer`

### constructGraticuleLines

    protected OMGraphicList constructGraticuleLines()

  Create the graticule lines.

  NOTES:

  - Currently graticule lines are hardcoded to 10 degree intervals.
  - No thought has been given to clipping based on the view rectangle. For non-boxy projections performance may be degraded at very large scales. (But we make up for this by running the task in its own thread to support liveness).

  Returns:
    OMGraphicList new graphic list

### evaluateSpacing

    protected int evaluateSpacing(float up,
                                  float down,
                                  float left,
                                  float right)

  Figure out which graticule lines should be drawn based on the treshold set in the layer, and the coordinates of the screen. Method checks for crossing of the dateline, but still assumes that the up and down latitude coordinates are less than abs(+/-80). This is because the projection shouldn't give anything above 90 degrees, and we limit the lines to less than 80..

  Parameters:
    `up` - northern latitude corrdinate, in decimal degrees,
    `down` - southern latitude coordinate, in decimal degrees.
    `left` - western longitude coordinate, in decimal degrees,
    `right` - eastern longitude coordinate, in decimal degrees.
  Returns:
    which lines should be shown, either SHOW_TENS, SHOW_FIVES and SHOW_ONES.

### constructGraticuleLines

    protected OMGraphicList constructGraticuleLines(float up,
                                                    float down,
                                                    float left,
                                                    float right,
                                                    int showWhichLines)

  Construct the five degree and one degree graticule lines, depending on the showWhichLines setting. Assumes that the coordinates passed in do not cross the dateline, and that the up is not greater than 80 and that the south is not less than -80.

  Parameters:
    `up` - northern latitude corrdinate, in decimal degrees,
    `down` - southern latitude coordinate, in decimal degrees.
    `left` - western longitude coordinate, in decimal degrees,
    `right` - eastern longitude coordinate, in decimal degrees.
    `showWhichLines` - indicator for which level of lines should be included, either SHOW_FIVES or SHOW_ONES. SHOW_TENS could be there, too, but then we wouldn't do anything.

### constructTenDegreeLines

    protected OMGraphicList constructTenDegreeLines()

  Create the ten degree lines.

### constructTensLabels

    protected OMGraphicList constructTensLabels(float up,
                                                float down,
                                                float left,
                                                float right,
                                                boolean doLats)

  Constructs the labels for the tens lines. Called from within the constructGraticuleLines if the showRuler variable is true. Usually called only if the ones and fives lines are not being drawn.

  Parameters:
    `up` - northern latitude corrdinate, in decimal degrees,
    `down` - southern latitude coordinate, in decimal degrees.
    `left` - western longitude coordinate, in decimal degrees,
    `right` - eastern longitude coordinate, in decimal degrees.
    `doLats` - do the latitude labels if true.
  Returns:
    OMGraphicList of labels.

### constructMarkerLines

    protected OMGraphicList constructMarkerLines()

  Constructs the Dateline and Prime Meridian lines.

### setLineTypeAndProject

    protected void setLineTypeAndProject(OMGraphicList list,
                                         int lineType)

  Take a graphic list, and set all the items on the list to the line type specified, and project them into the current projection.

  Parameters:
    `list` - the list containing the lines to change.
    `lineType` - the line type to cahnge the lines to.

### getGUI

    public java.awt.Component getGUI()

  Creates the interface palette.

  Overrides:
    `getGUI` in class `Layer`
  Returns:
    java.awt.Component or null

### actionPerformed

    public void actionPerformed(java.awt.event.ActionEvent e)

  Used just for the redraw button.

  Specified by:
    `actionPerformed` in interface `java.awt.event.ActionListener`
  Overrides:
    `actionPerformed` in class `Layer`

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Copyright (C) BBNT Solutions LLC; See http://openmap.bbn.com/ for details