/**
* Will insert a point in the polygon after given point
*
* @param a
* @param b
* @param p
*/
public void insertPointAfter(PolygonPoint a, PolygonPoint newPoint) {
// Validate that
int index = _points.indexOf(a);
if (index != -1) {
newPoint.setNext(a.getNext());
newPoint.setPrevious(a);
a.getNext().setPrevious(newPoint);
a.setNext(newPoint);
_points.add(index + 1, newPoint);
} else {
throw new RuntimeException(
"Tried to insert a point into a Polygon after a point not belonging to the Polygon");
}
}
public void addPoints(List<PolygonPoint> list) {
PolygonPoint first;
for (PolygonPoint p : list) {
p.setPrevious(_last);
if (_last != null) {
p.setNext(_last.getNext());
_last.setNext(p);
}
_last = p;
_points.add(p);
}
first = (PolygonPoint) _points.get(0);
_last.setNext(first);
first.setPrevious(_last);
}
public void removePoint(PolygonPoint p) {
PolygonPoint next, prev;
next = p.getNext();
prev = p.getPrevious();
prev.setNext(next);
next.setPrevious(prev);
_points.remove(p);
}
/**
* To create a polygon we need atleast 3 separate points
*
* @param p1
* @param p2
* @param p3
*/
public Polygon(PolygonPoint p1, PolygonPoint p2, PolygonPoint p3) {
p1._next = p2;
p2._next = p3;
p3._next = p1;
p1._previous = p3;
p2._previous = p1;
p3._previous = p2;
_points.add(p1);
_points.add(p2);
_points.add(p3);
}
/**
* Will add a point after the last point added
*
* @param p
*/
public void addPoint(PolygonPoint p) {
p.setPrevious(_last);
p.setNext(_last.getNext());
_last.setNext(p);
_points.add(p);
}
