How to use

removeNode

method

in

org.jhotdraw.draw.BezierFigure

/**
 * Joins two segments into one if the given Point2D.Double hits a node
 * of the polyline.
 * @return true if the two segments were joined.
 *
 * @param join a Point at a node on the bezier path
 * @param tolerance a tolerance, tolerance should take into account
 * the line width, plus 2 divided by the zoom factor. 
 */
public boolean joinSegments(Point2D.Double join, double tolerance) {
  int i = findSegment(join, tolerance);
  if (i != -1 && i > 1) {
    removeNode(i);
    return true;
  }
  return false;
}

  @Override
  public void undo() throws CannotUndoException {
    super.undo();
    willChange();
    removeNode(index);
    changed();
  }
});

@Override
public void redo() throws CannotRedoException {
  super.redo();
  view.removeFromSelection(f);
  f.willChange();
  f.removeNode(index);
  f.changed();
  view.addToSelection(f);
}

@Override
public void redo() throws CannotRedoException {
  super.redo();
  view.removeFromSelection(f);
  f.willChange();
  f.removeNode(index);
  f.changed();
  view.addToSelection(f);
}

@Override
public void updateFigure(final OverlayView view, final BezierFigure figure) {
  super.updateFigure(view, figure);
  assert view.getData() instanceof GeneralPathOverlay;
  final GeneralPathOverlay gpo = (GeneralPathOverlay) view.getData();
  final GeneralPathRegionOfInterest gpr = gpo.getRegionOfInterest();
  final PathIterator pi = gpr.getGeneralPath().getPathIterator(null);
  final int nCount = figure.getNodeCount();
  int i = 0;
  final double[] pos = new double[6];
  while (!pi.isDone()) {
    pi.currentSegment(pos);
    final Node n = new Node(pos[0], pos[1]);
    if (i < nCount) figure.getNode(i).setTo(n);
    else figure.addNode(n);
    pi.next();
    i++;
  }
  while (i < figure.getNodeCount())
    figure.removeNode(i);
}

@Override
public void updateFigure(final OverlayView view, final BezierFigure figure) {
  super.updateFigure(view, figure);
  final PolygonOverlay polygonOverlay = downcastOverlay(view.getData());
  final PolygonRegionOfInterest roi = polygonOverlay.getRegionOfInterest();
  final int vertexCount = roi.getVertexCount();
  while (figure.getNodeCount() > vertexCount) {
    figure.removeNode(vertexCount);
  }
  for (int i = 0; i < vertexCount; i++) {
    final RealLocalizable vertex = roi.getVertex(i);
    final double x = vertex.getDoublePosition(0);
    final double y = vertex.getDoublePosition(1);
    if (figure.getNodeCount() == i) {
      figure.addNode(new Node(x, y));
    }
    else {
      final Node node = figure.getNode(i);
      node.mask = 0;
      Arrays.fill(node.x, x);
      Arrays.fill(node.y, y);
    }
  }
}

Rectangle invalidatedArea = getDrawingArea();
f.willChange();
final BezierPath.Node removedNode = f.removeNode(index);
f.changed();
fireHandleRequestRemove(invalidatedArea);

Rectangle invalidatedArea = getDrawingArea();
f.willChange();
final BezierPath.Node removedNode = f.removeNode(index);
f.changed();
fireHandleRequestRemove(invalidatedArea);