1605         // Assertion: Cubic curves closed by connecting their

  1605 

  1606         // endpoints form either one or two convex halves with

  1606         int numCrossings = rectCrossings(x, y, w, h);

  1607         // the closing line segment as an edge of both sides.

  1607         return !(numCrossings == 0 || numCrossings == Curve.RECT_INTERSECTS);

  1608         if (!(contains(x, y) &&

  1608     }

  1609               contains(x + w, y) &&

  1609 

  1610               contains(x + w, y + h) &&

  1610     private int rectCrossings(double x, double y, double w, double h) {

  1611               contains(x, y + h))) {

  1611         int crossings = 0;

  1612             return false;

  1612         if (!(getX1() == getX2() && getY1() == getY2())) {

  1613         }

  1613             crossings = Curve.rectCrossingsForLine(crossings,

  1614         // Either the rectangle is entirely inside one of the convex

  1614                                                    x, y,

  1615         // halves or it crosses from one to the other, in which case

  1615                                                    x+w, y+h,

  1616         // it must intersect the closing line segment.

  1616                                                    getX1(), getY1(),

  1617         Rectangle2D rect = new Rectangle2D.Double(x, y, w, h);

  1617                                                    getX2(), getY2());

  1618         return !rect.intersectsLine(getX1(), getY1(), getX2(), getY2());

  1618             if (crossings == Curve.RECT_INTERSECTS) {

  1619                 return crossings;

  1620             }

  1621         }

  1622         // we call this with the curve's direction reversed, because we wanted

  1623         // to call rectCrossingsForLine first, because it's cheaper.

  1624         return Curve.rectCrossingsForCubic(crossings,

  1625                                            x, y,

  1626                                            x+w, y+h,

  1627                                            getX2(), getY2(),

  1628                                            getCtrlX2(), getCtrlY2(),

  1629                                            getCtrlX1(), getCtrlY1(),

  1630                                            getX1(), getY1(), 0);