public Polygon(PolygonRawData polygonRawData)
{
_closed = true;
float area = 0;
for (int i = 0; i < polygonRawData.Count; ++i)
{
Vector2 p1 = polygonRawData[i];
Vector2 p2 = polygonRawData[i + 1];
area += p1.x * p2.y - p2.x * p1.y;
}
if (area > 0)
{
polygonRawData.Reverse ();
}
//Debug.Log ("AREA " + area);
Edge2 prevEdge = null;
Point2 prevPt = null;
Point2 currentPt = null;
for (int i = 0; i < polygonRawData.Count - 1; ++i)
{
Vector2 rawPt = polygonRawData[i];
if (currentPt == null)
{
//currentPt = new Point2 (rawPt);
currentPt = new Point2 ();
currentPt.Set(
rawPt.x,
rawPt.y);
}
Point2 nextPt = new Point2 (polygonRawData[i + 1]);
if (i == polygonRawData.Count - 2 && polygonRawData.Count > 2)
{
nextPt = _points[0].GetPrevEdge ().GetPrevPoint2 ();
//nextPt = (Point2)_points[0].GetPrevEdge ().GetPrevPoint2 ().Clone();
//nextPt = new Point2();
nextPt.Set(
_points[0].GetPrevEdge ().GetPrevPoint2 ().GetX(),
_points[0].GetPrevEdge ().GetPrevPoint2 ().GetY());
}
if (prevEdge == null)
{
if (prevPt == null)
{
//prevPt = new Point2 (polygonRawData[i - 1]);
prevPt = new Point2 ();
prevPt.Set(
polygonRawData[i - 1].x,
polygonRawData[i - 1].y);
}
prevEdge = new Edge2 (prevPt, currentPt);
prevPt.SetNextEdge (prevEdge);
}
Edge2 nextEdge = new Edge2 (currentPt, nextPt);
// if (i == polygonRawData.Count - 1)
// {
// nextEdge = _points[0].GetPrevEdge ();
// }
currentPt.SetEdges (prevEdge, nextEdge);
_points.Add (currentPt);
_edges.Add (nextEdge);
if (i == polygonRawData.Count - 2 && polygonRawData.Count >= 2)
{
nextPt.SetPrevEdge (nextEdge);
_edges.Add (nextPt.GetNextEdge ());
_points.Add (nextPt);
}
prevEdge = nextEdge;
prevPt = currentPt;
currentPt = nextPt;
}
if (_edges.Count == 2 && _points.Count == 2)
{
_points[0].SetPrevEdge (null);
_points[1].SetNextEdge (null);
_edges.RemoveAt (1);
}
UpdateBounds ();
}
