How to use

toGeneralPath

method

in

org.jhotdraw.geom.BezierPath

/**
 * Recomputes the BezierPath, if it is invalid.
 */
public void validatePath() {
  if (generalPath == null) {
    generalPath = toGeneralPath();
  }
}

@Override
public Shape toShape(final BezierFigure figure) {
  return figure.getBezierPath().toGeneralPath();
}

@Override
public Shape toShape(final LineFigure figure) {
  return figure.getBezierPath().toGeneralPath();
}

@Override
public Shape toShape(final BezierFigure figure) {
  return figure.getBezierPath().toGeneralPath();
}

public static void addToRegionOfInterest(final BezierPath path,
  final GeneralPathRegionOfInterest roi)
{
  addToRegionOfInterest(path.toGeneralPath().getPathIterator(null), roi);
}

@SuppressWarnings("unused")
private static void show(final PathIterator iterator) {
  show(toBezierPath(iterator).toGeneralPath());
}

public static BezierPath op(final BezierPath path1, final BezierPath path2,
  final OP op)
{
  final Area area1 = new Area(path1.toGeneralPath());
  final Area area2 = new Area(path2.toGeneralPath());
  switch (op) {
    case ADD:
      area1.add(area2);
      break;
    case XOR:
      area1.exclusiveOr(area2);
      break;
    case INTERSECT:
      area1.intersect(area2);
      break;
    case SUBTRACT:
      area1.subtract(area2);
      break;
  }
  return toBezierPath(area1.getPathIterator(new AffineTransform()));
}

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());
}