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## com.bbn.openmap.omGraphics.geom
Class BasicGeometry

    java.lang.Object
      com.bbn.openmap.omGraphics.geom.BasicGeometry

All Implemented Interfaces:
  OMGeometry, OMGraphicConstants, java.io.Serializable

Direct Known Subclasses:
  OMGraphic, PolygonGeometry

public abstract class BasicGeometry
extends java.lang.Object
implements OMGeometry, java.io.Serializable, OMGraphicConstants

Base class implementation of OpenMap OMGeometry, the super class for all OMGraphics.

The geometry classes are intended to pull the object location data out of the OMGraphics. If you have a bunch of OMGraphics that are all rendered with common attributes, you can create a bunch of OMGeometry objects to plavce in a OMGeometryList that will render them all alike.

The BasicGeometry can hold attributes. Traditionally, there has been an appObject (Application Object) that could be set in the OMGeometry/OMGraphic to maintain a pointer for additional infomration about the shape. This has been modified so that an attribute Map can be maintained for the BasicGeometry to let it hold on to a bunch of organized attributes. To maintain backward compatibility, the setAppObject() and getAppObject() methods have been modified to manage a java.util.Map along with any Objects stored in the appObject. Using the setAppObject() and getAppObject() methods in conjunction with other attributes will cause that object to be stored in the attribute Map under the APP_OBJECT_KEY Map key.

See Also:
  `PolygonGeometry`, `PolylineGeometry`, `OMGeometryList`, `Projection`, Serialized Form

Field Summary
`protected static java.lang.String` | `APP_OBJECT_KEY`
`protected java.lang.Object` | `appObject` Space for an application to associate geometry with an application object.
`protected static java.lang.String` | `ATT_MAP_KEY`
`protected int` | `lineType` The lineType describes the way a line will be drawn between points.
`protected boolean` | `needToRegenerate` Flag to indicate that the object needs to be reprojected.
`protected java.awt.geom.GeneralPath` | `shape` The Java 2D containing the Shape of the Graphic.
`protected boolean` | `visible` A flag to render this geometry visible.

Fields inherited from interface com.bbn.openmap.omGraphics.OMGraphicConstants
`ADD_GRAPHIC_MASK, BASIC_STROKE, CHANGE_APPEARANCE, clear, DECIMAL_DEGREES, DECLUTTERTYPE_LINE, DECLUTTERTYPE_MOVE, DECLUTTERTYPE_NONE, DECLUTTERTYPE_SPACE, DEFAULT_ROTATIONANGLE, DELETE_GRAPHIC_MASK, DESELECT_GRAPHIC_MASK, DESELECTALL_GRAPHIC_MASK, GRAPHICTYPE_ARC, GRAPHICTYPE_BITMAP, GRAPHICTYPE_CIRCLE, GRAPHICTYPE_ELLIPSE, GRAPHICTYPE_GRAPHIC, GRAPHICTYPE_GRID, GRAPHICTYPE_LINE, GRAPHICTYPE_POINT, GRAPHICTYPE_POLY, GRAPHICTYPE_RASTER, GRAPHICTYPE_RECTANGLE, GRAPHICTYPE_TEXT, INFOLINE, LABEL, LINETYPE_GREATCIRCLE, LINETYPE_RHUMB, LINETYPE_STRAIGHT, LINETYPE_UNKNOWN, LOWER_GRAPHIC_MASK, LOWER_TO_BOTTOM_GRAPHIC_MASK, RADIANS, RAISE_GRAPHIC_MASK, RAISE_TO_TOP_GRAPHIC_MASK, REMOVABLE, RENDERTYPE_LATLON, RENDERTYPE_OFFSET, RENDERTYPE_UNKNOWN, RENDERTYPE_XY, SELECT_GRAPHIC_MASK, SORT_GRAPHICS_MASK, TOOLTIP, UPDATE_GRAPHIC_MASK`

Constructor Summary
`BasicGeometry()`

Method Summary
`protected float` | `_distance(int x, int y)` Return the shortest distance from the graphic to an XY-point.
`static java.awt.geom.GeneralPath` | `appendShapeEdge(java.awt.geom.GeneralPath toShape, java.awt.geom.GeneralPath addShape)` Convenience method to append the edge of a GeneralPath Shape to another GeneralPath Shape.
`static java.awt.geom.GeneralPath` | `appendShapeEdge(java.awt.geom.GeneralPath toShape, java.awt.geom.GeneralPath addShape, boolean lineTo)` Convenience method to append the edge of a GeneralPath Shape to another GeneralPath Shape.
`static java.awt.geom.GeneralPath` | `appendShapeEdge(java.awt.geom.GeneralPath toShape, int[] xpoints, int[] ypoints)` Convenience method to add the coordinates to the given GeneralPath.
`static java.awt.geom.GeneralPath` | `appendShapeEdge(java.awt.geom.GeneralPath toShape, int[] xpoints, int[] ypoints, int startIndex, int length)` Convenience method to add the coordinates to the given GeneralPath.
`protected boolean` | `checkAttributeMap()` Returns true if the appObject is a Map and if it's the attribute Map, false if the appObject is something different or null.
`protected boolean` | `checkAttributeMap(java.lang.Object obj)` Returns true of the Object is a Map and is pointing to itself in the Map under the ATT_MAP_KEY.
`void` | `clearAttributes()` Removes all of the objects stored in a Map stored in the appObject.
`boolean` | `contains(int x, int y)` Answsers the question whether or not the OMGeometry contains the given pixel point.
`protected java.util.Map` | `createAttributeMap()` Method to extend if you don't like Hashtables used for attribute table.
`static java.awt.geom.GeneralPath` | `createBoxShape(int x, int y, int width, int height)` Create a general path from a point plus a height and width;
`static java.awt.geom.GeneralPath` | `createShape(int[] xpoints, int[] ypoints, boolean isPolygon)` Create a Shape object given an array of x points and y points.
`static java.awt.geom.GeneralPath` | `createShape(int[] xpoints, int[] ypoints, int startIndex, int length, boolean isPolygon)` Create a Shape object given an array of x points and y points.
`static void` | `describeShapeDetail(java.awt.Shape shape)` Utility method that iterates over a Shape object and prints out the points.
`static void` | `describeShapeDetail(java.awt.Shape shape, double flattening)` Utility method that iterates over a Shape object and prints out the points.
`void` | `deselect()` Let the geometry object know it's deselected.
`float` | `distance(int x, int y)` Return the shortest distance from the graphic to an XY-point.
`float` | `distanceToEdge(int x, int y)` Return the shortest distance from the edge of a graphic to an XY-point.
`void` | `draw(java.awt.Graphics g)` Paint the graphic, as an outlined shape.
`void` | `fill(java.awt.Graphics g)` Paint the graphic, as a filled shape.
`abstract boolean` | `generate(Projection proj)` Prepare the geometry for rendering.
`java.lang.Object` | `getAppObject()` Gets the application's object pointer.
`protected java.lang.Object` | `getAppObject(boolean checkForObjOnMap)` Same as getAppObject, with the option of disabling the attribute Map management.
`java.lang.Object` | `getAttribute(java.lang.Object key)` Returns the object stored in a Map stored in the appObject.
`protected java.util.Map` | `getAttributeMap()` Returns a Map that is being used as an attribute holder.
`java.util.Map` | `getAttributes()` Returns the 'official' attribute Map, null if it hasn't been set.
`int` | `getLineType()` Return the line type.
`boolean` | `getNeedToRegenerate()` Return the regeneration status.
`abstract int` | `getRenderType()` Return the render type.
`java.awt.geom.GeneralPath` | `getShape()` Get the java.awt.Shape object that represents the projected graphic.
`boolean` | `isRenderable()`
`boolean` | `isVisible()` Get the visibility variable.
`void` | `putAttribute(java.lang.Object key, java.lang.Object value)` Adds a key-value pair to the attribute Map.
`boolean` | `regenerate(Projection proj)` Invoke this to regenerate a "dirty" graphic.
`java.lang.Object` | `removeAttribute(java.lang.Object key)` Removes the object stored in a Map stored in the appObject.
`protected void` | `replaceAppObjectWithAttributeMap()` A call used by the BasicGeometry to replace a current appication object with an Object Map while also adding that application object to the Map under the APP_OBJECT_KEY key value.
`void` | `select()` Let the geometry object know it's selected.
`void` | `setAppObject(java.lang.Object obj)` Holds an application specific object for later access.
`protected void` | `setAppObject(java.lang.Object obj, boolean checkToReplaceObjWithMap)` Same as setAppObject with the option for disabling the attribute Map management.
`void` | `setAttributes(java.util.Map atts)` Sets the 'official' attribute Map, moving any appObject that isn't currently the 'official' attribute Map into the map under the APP_OBJECT_KEY.
`void` | `setLineType(int value)` Set the line type for the graphic, which will affect how the lines will be drawn.
`void` | `setNeedToRegenerate(boolean value)` Sets the regenerate flag for the graphic.
`void` | `setShape(java.awt.geom.GeneralPath gp)` Set the java.awt.Shape object that represents the projected graphic.
`void` | `setVisible(boolean visible)` Set the visibility variable.

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

Field Detail

### lineType

    protected int lineType

  The lineType describes the way a line will be drawn between points. LINETYPE_STRAIGHT will mean the line is drawn straight between the pixels of the endpoints of the line, across the window. LINETYPE_GREATCIRCLE means the line will be drawn on the window representing the shortest line along the land. LINETYPE_RHUMB means a line will be drawn along a constant bearing between the two points.

### needToRegenerate

    protected boolean needToRegenerate

  Flag to indicate that the object needs to be reprojected.

### appObject

    protected java.lang.Object appObject

  Space for an application to associate geometry with an application object. This object can contain attribute information about the geometry.

  See Also:
    `setAppObject(java.lang.Object)`, `getAppObject()`

### visible

    protected boolean visible

  A flag to render this geometry visible.

### shape

    protected transient java.awt.geom.GeneralPath shape

  The Java 2D containing the Shape of the Graphic. There may be several paths appended to each other, in case the graphic wraps around the earth, and we need to show the other edge of the graphic on the other side of the earth.

### APP_OBJECT_KEY

    protected static final java.lang.String APP_OBJECT_KEY

See Also:
  Constant Field Values

### ATT_MAP_KEY

    protected static final java.lang.String ATT_MAP_KEY

See Also:
  Constant Field Values

Constructor Detail

### BasicGeometry

    public BasicGeometry()

Method Detail

### setLineType

    public void setLineType(int value)

  Set the line type for the graphic, which will affect how the lines will be drawn. See the definition of the lineType parameter. Accepts LINETYPE_RHUMB, LINETYPE_STRAIGHT and LINETYPE_GREATCIRCLE. Any weird values get set to LINETYPE_STRAIGHT.

  Specified by:
    `setLineType` in interface `OMGeometry`
  Parameters:
    `value` - the line type of the graphic.

### getLineType

    public int getLineType()

  Return the line type.

  Specified by:
    `getLineType` in interface `OMGeometry`
  Returns:
    the linetype - LINETYPE_RHUMB, LINETYPE_STRAIGHT, LINETYPE_GREATCIRCLE or LINETYPE_UNKNOWN.

### getRenderType

    public abstract int getRenderType()

  Return the render type.

  Specified by:
    `getRenderType` in interface `OMGeometry`
  Returns:
    the rendertype of the object - RENDERTYPE_LATLON, RENDERTYPE_XY, RENDERTYPE_OFFSET and RENDERTYPE_UNKNOWN.

### setNeedToRegenerate

    public void setNeedToRegenerate(boolean value)

  Sets the regenerate flag for the graphic. This flag is used to determine if extra work needs to be done to prepare the object for rendering.

  Specified by:
    `setNeedToRegenerate` in interface `OMGeometry`
  Parameters:
    `value` - boolean

### getNeedToRegenerate

    public boolean getNeedToRegenerate()

  Return the regeneration status.

  Specified by:
    `getNeedToRegenerate` in interface `OMGeometry`
  Returns:
    boolean

### setVisible

    public void setVisible(boolean visible)

  Set the visibility variable. NOTE:
  This is checked by the OMGeometryList when it iterates through its list for render and gesturing. It is not checked by the internal OMGeometry methods, although maybe it should be...

  Specified by:
    `setVisible` in interface `OMGeometry`
  Parameters:
    `visible` - boolean

### isVisible

    public boolean isVisible()

  Get the visibility variable.

  Specified by:
    `isVisible` in interface `OMGeometry`
  Returns:
    boolean

### select

    public void select()

  Let the geometry object know it's selected. No action mandated.

  Specified by:
    `select` in interface `OMGeometry`

### deselect

    public void deselect()

  Let the geometry object know it's deselected. No action mandated.

  Specified by:
    `deselect` in interface `OMGeometry`

### setAppObject

    public void setAppObject(java.lang.Object obj)

  Holds an application specific object for later access. This can be used to associate an application object with an OMGeometry for later retrieval. For instance, when the graphic is clicked on, the application gets the OMGeometry object back from the OMGeometryList, and can then get back to the application level object through this pointer.

  The BasicGeometry has been updated to use an attribute Object Map to hold multiple attributes. If no attributes have been added, then the appObject will just hold any object passed in here. If attributes have already been added, then calling this method will add the object to the Map under the APP_OBJECT_KEY key. getAppObject() will return the object set in this method.

  Specified by:
    `setAppObject` in interface `OMGeometry`
  Parameters:
    `obj` - Object

### setAppObject

    protected void setAppObject(java.lang.Object obj,
                                boolean checkToReplaceObjWithMap)

  Same as setAppObject with the option for disabling the attribute Map management.

  Parameters:
    `checkToReplaceObjWithMap` - if false, just sets obj to appObject.

### getAppObject

    public java.lang.Object getAppObject()

  Gets the application's object pointer. If an attribute Map object is being used, returns the object stored in that map under the APP_OBJECT_KEY key.

  Specified by:
    `getAppObject` in interface `OMGeometry`
  Returns:
    Object

### getAppObject

    protected java.lang.Object getAppObject(boolean checkForObjOnMap)

  Same as getAppObject, with the option of disabling the attribute Map management.

  Parameters:
    `checkForObjOnMap` - if false, just returns the appObject.

### replaceAppObjectWithAttributeMap

    protected void replaceAppObjectWithAttributeMap()

  A call used by the BasicGeometry to replace a current appication object with an Object Map while also adding that application object to the Map under the APP_OBJECT_KEY key value.

### checkAttributeMap

    protected boolean checkAttributeMap()

  Returns true if the appObject is a Map and if it's the attribute Map, false if the appObject is something different or null.

### checkAttributeMap

    protected boolean checkAttributeMap(java.lang.Object obj)

  Returns true of the Object is a Map and is pointing to itself in the Map under the ATT_MAP_KEY.

### getAttributeMap

    protected java.util.Map getAttributeMap()

  Returns a Map that is being used as an attribute holder. If a Map doesn't exist, one will be created. If the current appObject isn't the map, a Map will be created and the appObject will be added to it under the APP_OBJECT_KEY. Regardless, the attribute map will be returned from this method call.

### createAttributeMap

    protected java.util.Map createAttributeMap()

  Method to extend if you don't like Hashtables used for attribute table.

### putAttribute

    public void putAttribute(java.lang.Object key,
                             java.lang.Object value)

  Adds a key-value pair to the attribute Map. The Map will be created if it doesn't exist.

  Specified by:
    `putAttribute` in interface `OMGeometry`

### getAttribute

    public java.lang.Object getAttribute(java.lang.Object key)

  Returns the object stored in a Map stored in the appObject. If the appObject is a Map, the key will be passed to it even if the Map isn't considered to be the 'official' attribute Map.

  Specified by:
    `getAttribute` in interface `OMGeometry`

### removeAttribute

    public java.lang.Object removeAttribute(java.lang.Object key)

  Removes the object stored in a Map stored in the appObject. If the appObject is a Map, the key will be passed to it even if the Map isn't considered to be the 'official' attribute Map. Returns the removed value from the Map, or null if there wasn't a value for the given key.

  Specified by:
    `removeAttribute` in interface `OMGeometry`

### clearAttributes

    public void clearAttributes()

  Removes all of the objects stored in a Map stored in the appObject. If the appObject is a Map, the clear command will be passed to it even if the Map isn't considered to be the 'official' attribute Map.

  Specified by:
    `clearAttributes` in interface `OMGeometry`

### getAttributes

    public java.util.Map getAttributes()

  Returns the 'official' attribute Map, null if it hasn't been set.

  Specified by:
    `getAttributes` in interface `OMGeometry`

### setAttributes

    public void setAttributes(java.util.Map atts)

  Sets the 'official' attribute Map, moving any appObject that isn't currently the 'official' attribute Map into the map under the APP_OBJECT_KEY.

  Specified by:
    `setAttributes` in interface `OMGeometry`

### generate

    public abstract boolean generate(Projection proj)

  Prepare the geometry for rendering. This must be done before calling `render()`! If a vector graphic has lat-lon components, then we project these vertices into x-y space. For raster graphics we prepare in a different fashion.

  If the generate is unsuccessful, it's usually because of some oversight, (for instance if `proj` is null), and if debugging is enabled, a message may be output to the controlling terminal.

  Specified by:
    `generate` in interface `OMGeometry`
  Parameters:
    `proj` - Projection
  Returns:
    boolean true if successful, false if not.
  See Also:
    `regenerate(com.bbn.openmap.proj.Projection)`

### isRenderable

    public boolean isRenderable()

  Specified by:
    `isRenderable` in interface `OMGeometry`

### fill

    public void fill(java.awt.Graphics g)

  Paint the graphic, as a filled shape.

  This paints the graphic into the Graphics context. This is similar to `paint()` function of java.awt.Components. Note that if the graphic has not been generated or if it isn't visible, it will not be rendered.

  This method used to be abstract, but with the conversion of OMGeometrys to internally represent themselves as java.awt.Shape objects, it's a more generic method. If the OMGeometry hasn't been updated to use Shape objects, it should have its own render method.

  Specified by:
    `fill` in interface `OMGeometry`
  Parameters:
    `g` - Graphics2D context to render into.

### draw

    public void draw(java.awt.Graphics g)

  Paint the graphic, as an outlined shape.

  This paints the graphic into the Graphics context. This is similar to `paint()` function of java.awt.Components. Note that if the graphic has not been generated or if it isn't visible, it will not be rendered.

  This method used to be abstract, but with the conversion of OMGeometrys to internally represent themselves as java.awt.Shape objects, it's a more generic method. If the OMGeometry hasn't been updated to use Shape objects, it should have its own render method.

  Specified by:
    `draw` in interface `OMGeometry`
  Parameters:
    `g` - Graphics2D context to render into.

### distanceToEdge

    public float distanceToEdge(int x,
                                int y)

  Return the shortest distance from the edge of a graphic to an XY-point.

  Parameters:
    `x` - X coordinate of the point.
    `y` - Y coordinate of the point.
  Returns:
    float distance, in pixels, from graphic to the point. Returns Float.POSITIVE_INFINITY if the graphic isn't ready (ungenerated).

### distance

    public float distance(int x,
                          int y)

  Return the shortest distance from the graphic to an XY-point. Checks to see of the point is contained within the OMGraphic, which may, or may not be the right thing for clear OMGraphics or lines.

  This method used to be abstract, but with the conversion of OMGeometrys to internally represent themselves as java.awt.Shape objects, it's a more generic method. If the OMGeometry hasn't been updated to use Shape objects, it should have its own distance method.

  Calls _distance(x, y);

  Specified by:
    `distance` in interface `OMGeometry`
  Parameters:
    `x` - X coordinate of the point.
    `y` - Y coordinate of the point.
  Returns:
    float distance, in pixels, from graphic to the point. Returns Float.POSITIVE_INFINITY if the graphic isn't ready (ungenerated).

### _distance

    protected float _distance(int x,
                              int y)

  Return the shortest distance from the graphic to an XY-point. Checks to see of the point is contained within the OMGraphic, which may, or may not be the right thing for clear OMGraphics or lines.

  _distance was added so subclasses could make this call if their geometries/attributes require this action (when fill color doesn't matter).

  Parameters:
    `x` - X coordinate of the point.
    `y` - Y coordinate of the point.
  Returns:
    float distance, in pixels, from graphic to the point. Returns Float.POSITIVE_INFINITY if the graphic isn't ready (ungenerated).

### contains

    public boolean contains(int x,
                            int y)

  Answsers the question whether or not the OMGeometry contains the given pixel point.

  This method used to be abstract, but with the conversion of OMGeometrys to internally represent themselves as java.awt.Shape objects, it's a more generic method. If the OMGeometry hasn't been updated to use Shape objects, it should have its own contains method.

  This method duplicates a java.awt.Shape method, with some protection wrapped around it. If you have other queries for the internal Shape object, just ask for it and then ask it directly. This method is provided because it is the most useful, used when determining if a mouse event is occuring over an object on the map.

  Specified by:
    `contains` in interface `OMGeometry`
  Parameters:
    `x` - X pixel coordinate of the point.
    `y` - Y pixel coordinate of the point.
  Returns:
    getShape().contains(x, y), false if the OMGraphic hasn't been generated yet.

### regenerate

    public boolean regenerate(Projection proj)

  Invoke this to regenerate a "dirty" graphic. This method is a wrapper around the `generate()` method. It invokes `generate()` only if needToRegenerate() on the graphic returns true. To force a graphic to be generated, call `generate()` directly.

  Specified by:
    `regenerate` in interface `OMGeometry`
  Parameters:
    `proj` - the Projection
  Returns:
    true if generated, false if didn't do it (maybe a problem).
  See Also:
    `generate(com.bbn.openmap.proj.Projection)`

### getShape

    public java.awt.geom.GeneralPath getShape()

  Get the java.awt.Shape object that represents the projected graphic. The array will one Shape object even if the object wraps around the earth and needs to show up in more than one place on the map. In conditions like that, the Shape will have multiple parts.

  The java.awt.Shape object gives you the ability to do a little spatial analysis on the graphics.

  Specified by:
    `getShape` in interface `OMGeometry`
  Returns:
    java.awt.geom.GeneralPath (a java.awt.Shape object), or null if the graphic needs to be generated with the current map projection, or null if the OMGeometry hasn't been updated to use Shape objects for its internal representation.

### setShape

    public void setShape(java.awt.geom.GeneralPath gp)

  Set the java.awt.Shape object that represents the projected graphic. This Shape object should be internally generated, but this method is provided to clear out the object to save memory, or to allow a little customization if your requirements dictate.

  The java.awt.Shape object gives you the ability to do a little spatial analysis on the graphics.

  Specified by:
    `setShape` in interface `OMGeometry`
  Parameters:
    `gp` - java.awt.geom.GeneralPath, or null if the graphic needs to be generated with the current map projection or to clear out the object being held by the OMGeometry.

### createShape

    public static java.awt.geom.GeneralPath createShape(int[] xpoints,
                                                        int[] ypoints,
                                                        boolean isPolygon)

  Create a Shape object given an array of x points and y points. The x points a y points should be projected. This method is used by subclasses that get projected coordinates out of the projection classes, and they need to build a Shape object from those coordinates.

  Parameters:
    `xpoints` - projected x coordinates
    `ypoints` - projected y coordinates
    `isPolygon` - whether the points make up a polygon, or a polyline. If it's true, the Shape object returned is a Polygon. If false, the Shape returned is a GeneralPath object.
  Returns:
    The Shape object for the points.

### createShape

    public static java.awt.geom.GeneralPath createShape(int[] xpoints,
                                                        int[] ypoints,
                                                        int startIndex,
                                                        int length,
                                                        boolean isPolygon)

  Create a Shape object given an array of x points and y points. The x points a y points should be projected. This method is used by subclasses that get projected coordinates out of the projection classes, and they need to build a Shape object from those coordinates.

  Parameters:
    `xpoints` - projected x coordinates
    `ypoints` - projected y coordinates
    `startIndex` - the starting coordinate index in the array.
    `length` - the number of points to use from the array for the shape.
    `isPolygon` - whether the points make up a polygon, or a polyline. If it's true, the Shape object returned is a Polygon. If false, the Shape returned is a GeneralPath object.
  Returns:
    The Shape object for the points.

### describeShapeDetail

    public static void describeShapeDetail(java.awt.Shape shape)

  Utility method that iterates over a Shape object and prints out the points.

### describeShapeDetail

    public static void describeShapeDetail(java.awt.Shape shape,
                                           double flattening)

  Utility method that iterates over a Shape object and prints out the points. The flattening is used for a FlatteningPathIterator, controlling the scope of the path traversal.

### appendShapeEdge

    public static java.awt.geom.GeneralPath appendShapeEdge(java.awt.geom.GeneralPath toShape,
                                                            int[] xpoints,
                                                            int[] ypoints)

  Convenience method to add the coordinates to the given GeneralPath. You need to close the path yourself if you want it to be a polygon.

  Parameters:
    `toShape` - the GeneralPath Shape object to add the coordinates to.
    `xpoints` - horizontal pixel coordiantes.
    `ypoints` - vertical pixel coordiantes.
  Returns:
    toShape, with coordinates appended.

### appendShapeEdge

    public static java.awt.geom.GeneralPath appendShapeEdge(java.awt.geom.GeneralPath toShape,
                                                            int[] xpoints,
                                                            int[] ypoints,
                                                            int startIndex,
                                                            int length)

  Convenience method to add the coordinates to the given GeneralPath. You need to close the path yourself if you want it to be a polygon.

  Parameters:
    `toShape` - the GeneralPath Shape object to add the coordinates to.
    `xpoints` - horizontal pixel coordiantes.
    `ypoints` - vertical pixel coordiantes.
    `startIndex` - the index into pixel coordinate array to start reading from.
    `length` - the number of coordinates to add.
  Returns:
    toShape, with coordinates appended.

### appendShapeEdge

    public static java.awt.geom.GeneralPath appendShapeEdge(java.awt.geom.GeneralPath toShape,
                                                            java.awt.geom.GeneralPath addShape)

  Convenience method to append the edge of a GeneralPath Shape to another GeneralPath Shape. A PathIterator is used to figure out the points to use to add to the toShape. You need to close the path yourself if you want it to be a polygon. Assumes that the two paths should be connected.

  Parameters:
    `toShape` - the GeneralPath Shape object to add the edge to.
    `addShape` - the GeneralPath Shape to add to the toShape.
  Returns:
    toShape, with coordinates appended. Returns addShape if toShape was null.

### appendShapeEdge

    public static java.awt.geom.GeneralPath appendShapeEdge(java.awt.geom.GeneralPath toShape,
                                                            java.awt.geom.GeneralPath addShape,
                                                            boolean lineTo)

  Convenience method to append the edge of a GeneralPath Shape to another GeneralPath Shape. A PathIterator is used to figure out the points to use to add to the toShape. You need to close the path yourself if you want it to be a polygon.

  Parameters:
    `toShape` - the GeneralPath Shape object to add the edge to.
    `addShape` - the GeneralPath Shape to add to the toShape.
    `lineTo` - specify whether the first point of the appended path is connected to the original path. True to connect.
  Returns:
    toShape, with coordinates appended. Returns addShape if toShape was null.

### createBoxShape

    public static java.awt.geom.GeneralPath createBoxShape(int x,
                                                           int y,
                                                           int width,
                                                           int height)

  Create a general path from a point plus a height and width;

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