org.eclipse.gmf.runtime.draw2d.ui/src/org/eclipse/gmf/runtime/draw2d/ui/internal/routers/OrthogonalRouterUtilities.java - gmf-runtime/org.eclipse.gmf-runtime - Git at Google

 /******************************************************************************
  * Copyright (c) 2005, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *    IBM Corporation - initial API and implementation
  ****************************************************************************/

 package org.eclipse.gmf.runtime.draw2d.ui.internal.routers;

 import org.eclipse.draw2d.Connection;
 import org.eclipse.draw2d.ConnectionAnchor;
 import org.eclipse.draw2d.IFigure;
 import org.eclipse.draw2d.PositionConstants;
 import org.eclipse.draw2d.geometry.Point;
 import org.eclipse.draw2d.geometry.PointList;
 import org.eclipse.draw2d.geometry.PrecisionPoint;
 import org.eclipse.draw2d.geometry.Rectangle;
 import org.eclipse.gmf.runtime.draw2d.ui.figures.OrthogonalConnectionAnchor;
 import org.eclipse.gmf.runtime.draw2d.ui.geometry.LineSeg;


 /**
  * @author sshaw
  *
  */
 public class OrthogonalRouterUtilities {

 	/**
 	 * Calculates the center point that is aligned vertically or
 	 * horizontally with the given reference point.
 	 *
 	 * @param rect the <code>Rectangle</code> whose center point is used as
 	 * the location point to be adjusted versus the outside reference point.
 	 * @param ref the <code>Point</code> that is used as the reference to
 	 * readjust the center point of the given <code>Rectangle</code>
 	 * @return a <code>Point</code> that is adjusted horizontally or vertically
 	 * with respect to the given reference point.
 	 */
 	public static Point getAdjustedCenterPoint(
 		final Rectangle rect,
 		final Point ref) {
 		Point ptNewCenter = new Point(rect.getCenter());

 		if (ref.x < rect.getRight().x && ref.x > rect.getLeft().x) {
 			ptNewCenter.x = ref.x;
 		} else if (ref.y < rect.getBottom().y && ref.y > rect.getTop().y) {
 			ptNewCenter.y = ref.y;
 		}

 		return ptNewCenter;
 	}

 	/**
 	 * Resets both of the end points in the polyline to be close to the center point
 	 * of the figure.
 	 *
 	 * @param conn the <code>Connection</code> that is used to retrieve the ends and map the coordinates
 	 * of the end owners into absolute coordinates.
 	 * @param newLine the <code>PointList</code> whose end points are modified to be inside the end owners
 	 * bounding boxes.
 	 */
 	public static void resetEndPointsToCenter(
 		Connection conn,
 		PointList newLine) {

         Rectangle startRect = getBounds(conn.getSourceAnchor().getOwner());
         conn.getSourceAnchor().getOwner().translateToAbsolute(startRect);

 		Point ptStart = newLine.getPoint(1);
 		conn.translateToAbsolute(ptStart);
 		ptStart = getAdjustedCenterPoint(startRect, ptStart);
 		conn.translateToRelative(ptStart);
 		newLine.setPoint(ptStart, 0);

         Rectangle endRect = getBounds(conn.getTargetAnchor().getOwner());
         conn.getTargetAnchor().getOwner().translateToAbsolute(endRect);

 		Point ptEnd = newLine.getPoint(newLine.size() - 2);
 		conn.translateToAbsolute(ptEnd);
 		ptEnd = getAdjustedCenterPoint(endRect, ptEnd);
 		conn.translateToRelative(ptEnd);
 		newLine.setPoint(ptEnd, newLine.size() - 1);
 	}

 	/**
 	 * getEdgePoint
 	 * Utility method used to calculate the edge point of the source of target shape.
 	 *
 	 * @param conn Connection figure used to translate the point coordinates
 	 * @param anchor ConnectionAnchor to get the source / target bounds.
 	 * @param ptRef Point Reference point from which the edge point is calculated
 	 * @return Point that is on the edge of the Source / Target shape.
 	 */
 	private static Point getEdgePoint(
 		Connection conn,
 		ConnectionAnchor anchor,
 		Point ptRef) {
 		Rectangle rect = getBounds(anchor.getOwner());
 		anchor.getOwner().translateToAbsolute(rect);
 		conn.translateToRelative(rect);

         Point ptRef2 = new Point(ptRef);
         Point ptRef1 = getAdjustedCenterPoint(rect, ptRef2);

         Point ptAbsRef2 = new Point(ptRef2);
         conn.translateToAbsolute(ptAbsRef2);
         Point ptEdge = anchor.getLocation(ptAbsRef2);
 		conn.translateToRelative(ptEdge);

 		LineSeg lineSeg = new LineSeg(ptRef1, ptRef2);
 		Point ptProj = lineSeg.perpIntersect(ptEdge.x, ptEdge.y);

 		// account for possible rounding errors and ensure the
 		// resulting line is straight
 		if (Math.abs(ptProj.x - ptRef2.x) < Math.abs(ptProj.y - ptRef2.y))
 			ptProj.x = ptRef2.x;
 		else
 			ptProj.y = ptRef2.y;

 		return ptProj;
 	}

 	/**
 	 * Utility method used to calculate the orthongaol line segment that connects to the
 	 * given anchor location from a reference point.
 	 *
 	 * @param conn <code>Connection</code> figure used to translate the point coordinates
 	 * @param anchor the <code>ConnectionAnchor</code> to retrieve the location given a reference
 	 * point
 	 * @param ref the <code>Point</code> that is a reference from which the edge point is
 	 * calculated
 	 * @return <code>Point</code> that is on a legitimate connection location of the
 	 * <code>ConnectionAnchor</code> owner shape.
 	 */
 	public static LineSeg getOrthogonalLineSegToAnchorLoc(
 			Connection conn,
 			ConnectionAnchor anchor,
 			Point ref) {

 			assert anchor != null && anchor.getOwner() != null;

 			if (anchor instanceof OrthogonalConnectionAnchor) {
 				PrecisionPoint refAbs = new PrecisionPoint(ref);
 				conn.translateToAbsolute(refAbs);
 				PrecisionPoint anchorPoint = new PrecisionPoint(((OrthogonalConnectionAnchor)anchor).getOrthogonalLocation(refAbs));
 				conn.translateToRelative(anchorPoint);
 				return new LineSeg(anchorPoint, ref);
 			}

 			Point ptAbsRef = getEdgePoint(conn, anchor, ref);
 			conn.translateToAbsolute(ptAbsRef);
 			Point ptEdge = anchor.getLocation(ptAbsRef);
 			conn.translateToRelative(ptEdge);

 			LineSeg result = new LineSeg(ptEdge, ref);
 			if (!result.isHorizontal() && !result.isVertical()) {
 				if (Math.abs(result.getOrigin().x - result.getTerminus().x) <
 					Math.abs(result.getOrigin().y - result.getTerminus().y)) {
 					result.setTerminus(new Point(result.getOrigin().x, result.getTerminus().y));
 				}
 				else {
 					result.setTerminus(new Point(result.getTerminus().x, result.getOrigin().y));
 				}
 			}

 			return result;
 	}

     /**
      * Returns a copy of the bounds of this figure or if the figure is a
      * <code>Connection</code> the bounds of the pointlist will be returned.
      *
      * @param figure
      * @return a copy of the bounds
      */
     private static Rectangle getBounds(IFigure figure) {
         return figure instanceof Connection ? ((Connection) figure).getPoints()
             .getBounds().getCopy()
             : figure.getBounds().getCopy();
     }

 	/**
 	 * Returns true if the points form a rectilinear line.
 	 *
 	 * @param points polyline's points
 	 * @return
 	 */
 	public static boolean isRectilinear(PointList points) {
 		for (int i = 1; i < points.size(); i++) {
 			Point currentPt = points.getPoint(i);
 			Point previousPt = points.getPoint(i - 1);
 			if (currentPt.x != previousPt.x && currentPt.y != previousPt.y) {
 				return false;
 			}
 		}
 		return true;
 	}

 	/**
 	 * Polylines points are modified to form a rectilinear polyline (or connection in perspective).
 	 * Essentially extra points are added and list of points will form a rectilinear polyline.
 	 * The method has options for specifying orientation of start and end segments of a rectilinear
 	 * polyline
 	 *
 	 * @param points points list to be made rectilinear
 	 * @param offStartDirection orientation of the start segment
 	 * @param offEndDirection orientation of the end segment
 	 */
 	public static void transformToOrthogonalPointList(PointList points, int offStartDirection, int offEndDirection) {
 		if (points.size() > 1) {
 			PointList startPoints = new PointList(points.size());
 			PointList endPoints = new PointList(points.size());
 			boolean isOffSourceDirectionSet = offStartDirection == PositionConstants.HORIZONTAL || offStartDirection == PositionConstants.VERTICAL;
 			boolean isOffTargetDirectionSet = offEndDirection == PositionConstants.VERTICAL || offEndDirection == PositionConstants.HORIZONTAL;
 			if (!isOffSourceDirectionSet && !isOffTargetDirectionSet) {
 				/*
 				 * If there is no off start and off end direction passed in, determine
 				 * the off start direction.
 				 */
 				Point first = points.getPoint(0);
 				Point second = points.getPoint(1);
 				offStartDirection = Math.abs(first.x - second.x) < Math
 						.abs(first.y - second.y) ? PositionConstants.HORIZONTAL
 						: PositionConstants.VERTICAL;
 				isOffSourceDirectionSet = true;
 			}
 			startPoints.addPoint(points.removePoint(0));
 			endPoints.addPoint(points.removePoint(points.size() - 1));
 			while (points.size() != 0) {
 				if (isOffSourceDirectionSet) {
 					Point nextPt = points.removePoint(0);
 					Point lastStartPt = startPoints.getLastPoint();
 					if (nextPt.x != lastStartPt.x && nextPt.y != lastStartPt.y) {
 						/*
 						 * If segment is not rectilinear insert a point to make it
 						 * rectilinear
 						 */
 						if (offStartDirection == PositionConstants.VERTICAL) {
 							startPoints.addPoint(new Point(lastStartPt.x, nextPt.y));
 							offStartDirection = PositionConstants.HORIZONTAL;
 						} else {
 							startPoints.addPoint(new Point(nextPt.x, lastStartPt.y));
 							offStartDirection = PositionConstants.VERTICAL;
 						}
 					} else {
 						offStartDirection = nextPt.x == lastStartPt.x ? PositionConstants.VERTICAL
 								: PositionConstants.HORIZONTAL;
 					}
 					startPoints.addPoint(nextPt);
 				}
 				if (isOffTargetDirectionSet && points.size() != 0) {
 					Point nextPt = points.removePoint(points.size() - 1);
 					Point firstEndPt = endPoints.getFirstPoint();
 					if (nextPt.x != firstEndPt.x && nextPt.y != firstEndPt.y) {
 						/*
 						 * If segment is not rectilinear insert a point to make it
 						 * rectilinear
 						 */
 						if (offEndDirection == PositionConstants.VERTICAL) {
 							endPoints.insertPoint(new Point(firstEndPt.x, nextPt.y), 0);
 							offEndDirection = PositionConstants.HORIZONTAL;
 						} else {
 							endPoints.insertPoint(new Point(nextPt.x, firstEndPt.y), 0);
 							offEndDirection = PositionConstants.VERTICAL;
 						}
 					} else {
 						offEndDirection = nextPt.x == firstEndPt.x ? PositionConstants.VERTICAL
 								: PositionConstants.HORIZONTAL;
 					}
 					endPoints.insertPoint(nextPt, 0);
 				}
 			}
 			/*
 			 * Now we need to merge the two point lists such that the polyline formed by the
 			 * points is still rectilinear. Hence there is a chance that one more point needs
 			 * to be added.
 			 */
 			Point lastStartPt = startPoints.getLastPoint();
 			Point firstEndPt = endPoints.getFirstPoint();
 			if (lastStartPt.x != firstEndPt.x && lastStartPt.y != firstEndPt.y) {
 				/*
 				 * We need to add extra point. Now there is a dilemma: Should we
 				 * use off source orientation or off target? We'll use off
 				 * target orientation in 2 cases:
 				 * 1. Off source direction has not been set and off target direction was
 				 * 2. Off target direction is set, but the start points list has more points
 				 * than the end points list.
 				 * Otherwise off start direction will be used.
 				 */
 				if ((!isOffSourceDirectionSet && isOffTargetDirectionSet) || (isOffTargetDirectionSet && endPoints.size() < startPoints.size())) {
 					if (offEndDirection == PositionConstants.VERTICAL) {
 						startPoints.addPoint(new Point(firstEndPt.x, lastStartPt.y));
 					} else {
 						startPoints.addPoint(new Point(lastStartPt.x, firstEndPt.y));
 					}
 				}
 				else if (offStartDirection == PositionConstants.VERTICAL) {
 					startPoints.addPoint(new Point(lastStartPt.x, firstEndPt.y));
 				} else {
 					startPoints.addPoint(new Point(firstEndPt.x, lastStartPt.y));
 				}
 			}
 			points.addAll(startPoints);
 			points.addAll(endPoints);
 		}
 	}

 }
	/******************************************************************************
	* Copyright (c) 2005, 2007 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	****************************************************************************/

	package org.eclipse.gmf.runtime.draw2d.ui.internal.routers;

	import org.eclipse.draw2d.Connection;
	import org.eclipse.draw2d.ConnectionAnchor;
	import org.eclipse.draw2d.IFigure;
	import org.eclipse.draw2d.PositionConstants;
	import org.eclipse.draw2d.geometry.Point;
	import org.eclipse.draw2d.geometry.PointList;
	import org.eclipse.draw2d.geometry.PrecisionPoint;
	import org.eclipse.draw2d.geometry.Rectangle;
	import org.eclipse.gmf.runtime.draw2d.ui.figures.OrthogonalConnectionAnchor;
	import org.eclipse.gmf.runtime.draw2d.ui.geometry.LineSeg;


	/**
	* @author sshaw
	*
	*/
	public class OrthogonalRouterUtilities {

	/**
	* Calculates the center point that is aligned vertically or
	* horizontally with the given reference point.
	*
	* @param rect the <code>Rectangle</code> whose center point is used as
	* the location point to be adjusted versus the outside reference point.
	* @param ref the <code>Point</code> that is used as the reference to
	* readjust the center point of the given <code>Rectangle</code>
	* @return a <code>Point</code> that is adjusted horizontally or vertically
	* with respect to the given reference point.
	*/
	public static Point getAdjustedCenterPoint(
	final Rectangle rect,
	final Point ref) {
	Point ptNewCenter = new Point(rect.getCenter());

	if (ref.x < rect.getRight().x && ref.x > rect.getLeft().x) {
	ptNewCenter.x = ref.x;
	} else if (ref.y < rect.getBottom().y && ref.y > rect.getTop().y) {
	ptNewCenter.y = ref.y;
	}

	return ptNewCenter;
	}

	/**
	* Resets both of the end points in the polyline to be close to the center point
	* of the figure.
	*
	* @param conn the <code>Connection</code> that is used to retrieve the ends and map the coordinates
	* of the end owners into absolute coordinates.
	* @param newLine the <code>PointList</code> whose end points are modified to be inside the end owners
	* bounding boxes.
	*/
	public static void resetEndPointsToCenter(
	Connection conn,
	PointList newLine) {

	Rectangle startRect = getBounds(conn.getSourceAnchor().getOwner());
	conn.getSourceAnchor().getOwner().translateToAbsolute(startRect);

	Point ptStart = newLine.getPoint(1);
	conn.translateToAbsolute(ptStart);
	ptStart = getAdjustedCenterPoint(startRect, ptStart);
	conn.translateToRelative(ptStart);
	newLine.setPoint(ptStart, 0);

	Rectangle endRect = getBounds(conn.getTargetAnchor().getOwner());
	conn.getTargetAnchor().getOwner().translateToAbsolute(endRect);

	Point ptEnd = newLine.getPoint(newLine.size() - 2);
	conn.translateToAbsolute(ptEnd);
	ptEnd = getAdjustedCenterPoint(endRect, ptEnd);
	conn.translateToRelative(ptEnd);
	newLine.setPoint(ptEnd, newLine.size() - 1);
	}

	/**
	* getEdgePoint
	* Utility method used to calculate the edge point of the source of target shape.
	*
	* @param conn Connection figure used to translate the point coordinates
	* @param anchor ConnectionAnchor to get the source / target bounds.
	* @param ptRef Point Reference point from which the edge point is calculated
	* @return Point that is on the edge of the Source / Target shape.
	*/
	private static Point getEdgePoint(
	Connection conn,
	ConnectionAnchor anchor,
	Point ptRef) {
	Rectangle rect = getBounds(anchor.getOwner());
	anchor.getOwner().translateToAbsolute(rect);
	conn.translateToRelative(rect);

	Point ptRef2 = new Point(ptRef);
	Point ptRef1 = getAdjustedCenterPoint(rect, ptRef2);

	Point ptAbsRef2 = new Point(ptRef2);
	conn.translateToAbsolute(ptAbsRef2);
	Point ptEdge = anchor.getLocation(ptAbsRef2);
	conn.translateToRelative(ptEdge);

	LineSeg lineSeg = new LineSeg(ptRef1, ptRef2);
	Point ptProj = lineSeg.perpIntersect(ptEdge.x, ptEdge.y);

	// account for possible rounding errors and ensure the
	// resulting line is straight
	if (Math.abs(ptProj.x - ptRef2.x) < Math.abs(ptProj.y - ptRef2.y))
	ptProj.x = ptRef2.x;
	else
	ptProj.y = ptRef2.y;

	return ptProj;
	}

	/**
	* Utility method used to calculate the orthongaol line segment that connects to the
	* given anchor location from a reference point.
	*
	* @param conn <code>Connection</code> figure used to translate the point coordinates
	* @param anchor the <code>ConnectionAnchor</code> to retrieve the location given a reference
	* point
	* @param ref the <code>Point</code> that is a reference from which the edge point is
	* calculated
	* @return <code>Point</code> that is on a legitimate connection location of the
	* <code>ConnectionAnchor</code> owner shape.
	*/
	public static LineSeg getOrthogonalLineSegToAnchorLoc(
	Connection conn,
	ConnectionAnchor anchor,
	Point ref) {

	assert anchor != null && anchor.getOwner() != null;

	if (anchor instanceof OrthogonalConnectionAnchor) {
	PrecisionPoint refAbs = new PrecisionPoint(ref);
	conn.translateToAbsolute(refAbs);
	PrecisionPoint anchorPoint = new PrecisionPoint(((OrthogonalConnectionAnchor)anchor).getOrthogonalLocation(refAbs));
	conn.translateToRelative(anchorPoint);
	return new LineSeg(anchorPoint, ref);
	}

	Point ptAbsRef = getEdgePoint(conn, anchor, ref);
	conn.translateToAbsolute(ptAbsRef);
	Point ptEdge = anchor.getLocation(ptAbsRef);
	conn.translateToRelative(ptEdge);

	LineSeg result = new LineSeg(ptEdge, ref);
	if (!result.isHorizontal() && !result.isVertical()) {
	if (Math.abs(result.getOrigin().x - result.getTerminus().x) <
	Math.abs(result.getOrigin().y - result.getTerminus().y)) {
	result.setTerminus(new Point(result.getOrigin().x, result.getTerminus().y));
	}
	else {
	result.setTerminus(new Point(result.getTerminus().x, result.getOrigin().y));
	}
	}

	return result;
	}

	/**
	* Returns a copy of the bounds of this figure or if the figure is a
	* <code>Connection</code> the bounds of the pointlist will be returned.
	*
	* @param figure
	* @return a copy of the bounds
	*/
	private static Rectangle getBounds(IFigure figure) {
	return figure instanceof Connection ? ((Connection) figure).getPoints()
	.getBounds().getCopy()
	: figure.getBounds().getCopy();
	}

	/**
	* Returns true if the points form a rectilinear line.
	*
	* @param points polyline's points
	* @return
	*/
	public static boolean isRectilinear(PointList points) {
	for (int i = 1; i < points.size(); i++) {
	Point currentPt = points.getPoint(i);
	Point previousPt = points.getPoint(i - 1);
	if (currentPt.x != previousPt.x && currentPt.y != previousPt.y) {
	return false;
	}
	}
	return true;
	}

	/**
	* Polylines points are modified to form a rectilinear polyline (or connection in perspective).
	* Essentially extra points are added and list of points will form a rectilinear polyline.
	* The method has options for specifying orientation of start and end segments of a rectilinear
	* polyline
	*
	* @param points points list to be made rectilinear
	* @param offStartDirection orientation of the start segment
	* @param offEndDirection orientation of the end segment
	*/
	public static void transformToOrthogonalPointList(PointList points, int offStartDirection, int offEndDirection) {
	if (points.size() > 1) {
	PointList startPoints = new PointList(points.size());
	PointList endPoints = new PointList(points.size());
	boolean isOffSourceDirectionSet = offStartDirection == PositionConstants.HORIZONTAL \|\| offStartDirection == PositionConstants.VERTICAL;
	boolean isOffTargetDirectionSet = offEndDirection == PositionConstants.VERTICAL \|\| offEndDirection == PositionConstants.HORIZONTAL;
	if (!isOffSourceDirectionSet && !isOffTargetDirectionSet) {
	/*
	* If there is no off start and off end direction passed in, determine
	* the off start direction.
	*/
	Point first = points.getPoint(0);
	Point second = points.getPoint(1);
	offStartDirection = Math.abs(first.x - second.x) < Math
	.abs(first.y - second.y) ? PositionConstants.HORIZONTAL
	: PositionConstants.VERTICAL;
	isOffSourceDirectionSet = true;
	}
	startPoints.addPoint(points.removePoint(0));
	endPoints.addPoint(points.removePoint(points.size() - 1));
	while (points.size() != 0) {
	if (isOffSourceDirectionSet) {
	Point nextPt = points.removePoint(0);
	Point lastStartPt = startPoints.getLastPoint();
	if (nextPt.x != lastStartPt.x && nextPt.y != lastStartPt.y) {
	/*
	* If segment is not rectilinear insert a point to make it
	* rectilinear
	*/
	if (offStartDirection == PositionConstants.VERTICAL) {
	startPoints.addPoint(new Point(lastStartPt.x, nextPt.y));
	offStartDirection = PositionConstants.HORIZONTAL;
	} else {
	startPoints.addPoint(new Point(nextPt.x, lastStartPt.y));
	offStartDirection = PositionConstants.VERTICAL;
	}
	} else {
	offStartDirection = nextPt.x == lastStartPt.x ? PositionConstants.VERTICAL
	: PositionConstants.HORIZONTAL;
	}
	startPoints.addPoint(nextPt);
	}
	if (isOffTargetDirectionSet && points.size() != 0) {
	Point nextPt = points.removePoint(points.size() - 1);
	Point firstEndPt = endPoints.getFirstPoint();
	if (nextPt.x != firstEndPt.x && nextPt.y != firstEndPt.y) {
	/*
	* If segment is not rectilinear insert a point to make it
	* rectilinear
	*/
	if (offEndDirection == PositionConstants.VERTICAL) {
	endPoints.insertPoint(new Point(firstEndPt.x, nextPt.y), 0);
	offEndDirection = PositionConstants.HORIZONTAL;
	} else {
	endPoints.insertPoint(new Point(nextPt.x, firstEndPt.y), 0);
	offEndDirection = PositionConstants.VERTICAL;
	}
	} else {
	offEndDirection = nextPt.x == firstEndPt.x ? PositionConstants.VERTICAL
	: PositionConstants.HORIZONTAL;
	}
	endPoints.insertPoint(nextPt, 0);
	}
	}
	/*
	* Now we need to merge the two point lists such that the polyline formed by the
	* points is still rectilinear. Hence there is a chance that one more point needs
	* to be added.
	*/
	Point lastStartPt = startPoints.getLastPoint();
	Point firstEndPt = endPoints.getFirstPoint();
	if (lastStartPt.x != firstEndPt.x && lastStartPt.y != firstEndPt.y) {
	/*
	* We need to add extra point. Now there is a dilemma: Should we
	* use off source orientation or off target? We'll use off
	* target orientation in 2 cases:
	* 1. Off source direction has not been set and off target direction was
	* 2. Off target direction is set, but the start points list has more points
	* than the end points list.
	* Otherwise off start direction will be used.
	*/
	if ((!isOffSourceDirectionSet && isOffTargetDirectionSet) \|\| (isOffTargetDirectionSet && endPoints.size() < startPoints.size())) {
	if (offEndDirection == PositionConstants.VERTICAL) {
	startPoints.addPoint(new Point(firstEndPt.x, lastStartPt.y));
	} else {
	startPoints.addPoint(new Point(lastStartPt.x, firstEndPt.y));
	}
	}
	else if (offStartDirection == PositionConstants.VERTICAL) {
	startPoints.addPoint(new Point(lastStartPt.x, firstEndPt.y));
	} else {
	startPoints.addPoint(new Point(firstEndPt.x, lastStartPt.y));
	}
	}
	points.addAll(startPoints);
	points.addAll(endPoints);
	}
	}

	}