com.bbn.openmap.omGraphics.geom
Class PolylineGeometry

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

All Implemented Interfaces:

OMGeometry, OMGraphicConstants, java.io.Serializable

public abstract class PolylineGeometry
extends PolygonGeometry
implements java.io.Serializable, OMGeometry

Graphic object that represents a polygon.

All of the OMGraphics are moving to having their internal representation as java.awt.Shape objects. Unfortunately, this has the side effect of slowing OMPolys down, because the way that the projection classes handle transformations cause more objects to be allocated and more loops to be run through. So, by default, the OMPoly does NOT use Shape objects internally, to keep layers that throw down many, many polys running quickly. If you want to do some spatial analysis on an OMPoly, call setDoShapes(true) on it, then generate(Projection), and then call getShapes() to get the java.awt.Shape objects for the poly. You can then run the different Shape spatial analysis methods on the Shape objects.

NOTES:

• See the RESTRICTIONS on Lat/Lon polygons/polylines. Not following the guidelines listed may result in ambiguous/undefined shapes! Similar assumptions apply to the other vector graphics that we define: circles, ellipses, rects, lines.
• LatLon OMPolys store latlon coordinates internally in radian format for efficiency in projecting. Subclasses should follow this model.
• Holes in the poly are not supported. If you want holes, use multiple PolyGeometrys in a OMGeometryList.

TODO:

• Polar filled-polygon correction for Cylindrical projections (like OMCircle).

See Also:

Serialized Form

Nested Class Summary

static class	PolylineGeometry.LL
static class	PolylineGeometry.Offset
static class	PolylineGeometry.XY

Field Summary

Fields inherited from class com.bbn.openmap.omGraphics.geom.PolygonGeometry

doShapes, isPolygon, xpoints, ypoints

Fields inherited from class com.bbn.openmap.omGraphics.geom.BasicGeometry

attributes, lineType, needToRegenerate, shape, visible

Fields inherited from interface com.bbn.openmap.omGraphics.OMGraphicConstants

ADD_GRAPHIC_MASK, APP_OBJECT, 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, INDEX, INFOLINE, LABEL, LINETYPE_GREATCIRCLE, LINETYPE_RHUMB, LINETYPE_STRAIGHT, LINETYPE_UNKNOWN, LOWER_GRAPHIC_MASK, LOWER_TO_BOTTOM_GRAPHIC_MASK, NO_ROTATE, OMGRAPHIC_ELT, OMGRAPHIC_TYPE_ATTR, 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, UPDATED

Constructor Summary

PolylineGeometry()

Method Summary

float

distance(double x, double y) Return the shortest distance from the graphic to an XY-point.

Methods inherited from class com.bbn.openmap.omGraphics.geom.PolygonGeometry

createShape, getDoShapes, getIsPolygon, getShape, setDoShapes, setIsPolygon

Methods inherited from class com.bbn.openmap.omGraphics.geom.BasicGeometry

_distance, appendShapeEdge, appendShapeEdge, appendShapeEdge, appendShapeEdge, clearAttributes, contains, createAttributeMap, createBoxShape, createShape, createShape, describeShapeDetail, describeShapeDetail, deselect, distanceToEdge, distanceToEdge, draw, draw, fill, fill, generate, getAppObject, getAttribute, getAttributes, getDescription, getLineType, getNeedToRegenerate, getRenderType, isRenderable, isRenderable, isVisible, putAttribute, regenerate, removeAttribute, render, restore, select, setAppObject, setAttributes, setLineType, setNeedToRegenerate, setShape, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.bbn.openmap.omGraphics.OMGeometry

clearAttributes, contains, deselect, distanceToEdge, draw, draw, fill, fill, generate, getAppObject, getAttribute, getAttributes, getDescription, getLineType, getNeedToRegenerate, getRenderType, getShape, isRenderable, isRenderable, isVisible, putAttribute, regenerate, removeAttribute, render, restore, select, setAppObject, setAttributes, setLineType, setNeedToRegenerate, setShape, setVisible

Constructor Detail

PolylineGeometry

public PolylineGeometry()

Method Detail

distance

public float distance(double x,
                      double y)

Return the shortest distance from the graphic to an XY-point. This works if generate() has been successful.

Specified by:

distance in interface OMGeometry

Overrides:

distance in class PolygonGeometry

Parameters:

x - horizontal pixel location.

y - vertical pixel location.

Returns:

the distance of the object to the location given.