How to use

org.jhotdraw.geom.BezierPath

constructor

/**
 * Creates an empty BezierFigure, for example without any
 * <code>BezierPath.Node</code>s.
 * The BezierFigure will not draw anything, unless at least two nodes
 * are added to it.
 *
 * @param isClosed Specifies whether the <code>BezierPath</code> shall
 * be closed.
 */
public BezierFigure(boolean isClosed) {
  path = new BezierPath();
  set(PATH_CLOSED, isClosed);
  //path.setClosed(isClosed);
}

public static BezierPath toBezierPath(final PathIterator iterator) {
  final BezierPath path = new BezierPath();
  final double[] segment = new double[6];
  for (; !iterator.isDone(); iterator.next()) {
    final int type = iterator.currentSegment(segment);
    switch (type) {
      case PathIterator.SEG_MOVETO:
        path.moveTo(segment[0], segment[1]);
        break;
      case PathIterator.SEG_LINETO:
        path.lineTo(segment[0], segment[1]);
        break;
      case PathIterator.SEG_QUADTO:
        path.quadTo(segment[0], segment[1], segment[2], segment[3]);
        break;
      case PathIterator.SEG_CUBICTO:
        path.curveTo(segment[0], segment[1], segment[2], segment[3],
          segment[4], segment[5]);
        break;
      case PathIterator.SEG_CLOSE:
        path.setClosed(true);
        break;
    }
  }
  return path;
}

public static void main(final String[] args) {
  BezierPath path1 = new BezierPath();
  path1.moveTo(0, 0);
  path1.lineTo(100, 0);
  path1.lineTo(100, 100);
  path1.lineTo(0, 0);
  final GeneralPath path2 = new GeneralPath();
  path2.moveTo(0, 0);
  path2.lineTo(100, 0);
  path2.lineTo(100, 100);
  path2.closePath();
  // path1 = toBezierPath(path2.getPathIterator(new AffineTransform()));
  final BezierPath path3 = new BezierPath();
  path3.moveTo(0, 100);
  path3.lineTo(100, 0);
  path3.lineTo(100, 100);
  path3.lineTo(0, 100);
  path1 = subtract(path1, path3);
  show(path1.toGeneralPath());
}

case PathIterator.SEG_MOVETO:
  if (bezierPath != null) add(bezierPath, false);
  bezierPath = new BezierPath();
  bezierPath.moveTo(segment[0], segment[1]);
  break;

case PathIterator.SEG_MOVETO:
  if (bezierPath != null) add(bezierPath, false);
  bezierPath = new BezierPath();
  bezierPath.moveTo(segment[0], segment[1]);
  break;

BezierPath fittedPath = new BezierPath();

/** Creates new form BezierDemo */
public BezierDemo() {
  initComponents();
  canvas = new Canvas();
  canvas.setOpaque(true);
  canvas.setBackground(Color.WHITE);
  canvas.addMouseListener(handler);
  canvas.addMouseMotionListener(handler);
  add(canvas, BorderLayout.CENTER);
  Point2D.Double[] d = { //  Digitized points 
  };
  BezierPath digi = new BezierPath();
  digi.addPolyline(Arrays.asList(d));
  Example ex = new Example();
  examples.add(ex);
  ex.digitized = digi;
  ex.error = 2d;
}

createdFigure.willChange();
BezierPath figurePath = createdFigure.getBezierPath();
BezierPath digitizedPath = new BezierPath();
for (int i = nodeCountBeforeDrag - 1, n = figurePath.size(); i < n; i++) {
  digitizedPath.add(figurePath.get(nodeCountBeforeDrag - 1));

@Override
public Shape createStrokedShape(Shape s) {
  BezierPath bp = new BezierPath();
  Path2D.Double left = new Path2D.Double();
  Path2D.Double right = new Path2D.Double();

  paths.add(path);
path = new BezierPath();
  paths.add(path);
path = new BezierPath();

  paths.add(path);
path = new BezierPath();
  paths.add(path);
path = new BezierPath();

@Override
public Shape createStrokedShape(Shape s) {
  BezierPath bp = new BezierPath();
  Path2D.Double left = new Path2D.Double();
  Path2D.Double right = new Path2D.Double();

BezierPath tempPath = new BezierPath();
Node t1, t2;
tempPath.add(t1 = new Node());

public BezierPath getBezierPath() {
  Rectangle2D.Double r = (Rectangle2D.Double) rectangle.clone();
  BezierPath triangle = new BezierPath();
  switch (get(ORIENTATION)) {
    case NORTH :

double relativeLen = 0d;
Node v1, v2;
BezierPath tempPath = new BezierPath();
Node t1, t2;
tempPath.add(t1 = new Node());