/// <summary>
/// Event for draw polygon button.
/// Gets all root points in treelistview and creates a
/// polygon if more than 2 points, a line if exactly
/// 2 points, and nothing if there is 1 or less.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnDrawPolygon_Click(object sender, EventArgs e)
{
List <PointItem> list = new List <PointItem>();
object item;
foreach (var o in treeListView1.Objects)
{
if (o is PointItem)
{
list.Add((PointItem)o);
}
}
if (list.Count > 1)
{
if (list.Count == 2)
{
item = new LineItem(list, 1);
((LineItem)item).DrawOnMap(map, polygons, markers);
}
else
{
item = new PolygonItem(list, 1);
((PolygonItem)item).DrawOnMap(map, polygons, markers);
}
treeListView1.AddObject(item);
CenterMapToPoint(map.Position);
treeListView1.RemoveObjects(list);
}
}
/// <summary>
/// Resizes the flight line to the given polygon (usually parent).
/// Find if trigger points are over polygon. If they are then the
/// previous trigger and next trigger will be kept. Removes any
/// that are not over polygon or not next to one that is over polygon.
/// </summary>
/// <param name="p"></param>
public void ResizeToPoly(PolygonItem p)
{
bool mem1 = false;
bool mem2 = true;
List <int> indexesToRemove = new List <int>();
for (int i = Triggers.Count - 1; i > -1; i--)
{
if (Triggers[i].IsOverPolygon(p))
{
mem2 = mem1;
mem1 = true;
}
else
{
if (!mem1 && !mem2)
{
Triggers.RemoveAt(i + 1);
}
mem2 = mem1;
mem1 = false;
}
}
if (!mem1 && !mem2)
{
Triggers.RemoveAt(0);
}
if (Triggers.Count != 0)
{
Line.PointItems[0] = Triggers[0].Point;
Line.PointItems[1] = Triggers.Last().Point;
Line.CreateGMapPolygon();
}
RefreshChildren();
}
public bool IsOverPolygon(PolygonItem p)
{
return(p.Poly.IsInside(Point.Coords));
}