/// <summary>
/// Constructor that uses a List of Points and an optional List of Point-Indices
/// </summary>
/// <param name="points">The Polygon-Defining Points</param>
/// <param name="indices">Optional List of Point-Indices</param>
public PolygonData(List <Point> points, List <int> indices = null)
{
// Create and add PolygonPoints for this Polygon Object
mPoints = new List <PolygonPoint>(points.Select(p => new PolygonPoint(p)));
// If no Indices were specified, add them manually
if (indices == null)
{
for (int i = 0; i < mPoints.Count; i++)
{
mPoints[i].Index = i;
}
}
// If there were Indices specified, use them to set the PolygonPoint's Index Property
else
{
for (int i = 0; i < mPoints.Count; i++)
{
mPoints[i].Index = indices[i];
}
}
// Add Edges between the Points (to be able to navigate along the Polygon easily later)
var cnt = mPoints.Count;
for (int i = 0; i < cnt; i++)
{
var lastIdx = (i + cnt - 1) % cnt;
var edge = new PolygonEdge(mPoints[lastIdx], mPoints[i]);
mPoints[lastIdx].EdgeTwo = edge;
mPoints[i].EdgeOne = edge;
}
}
/// <summary>
/// Constructor taking an Edge and a Helper
/// </summary>
/// <param name="edge">The Edge of the StatusHelperElement</param>
/// <param name="point">The Helper for the Edge of the StatusHelperElement</param>
internal StatusHelperElement(PolygonEdge edge, PolygonPoint point)
{
this.Edge = edge;
this.Helper = point;
}
/// <summary>
/// Removes all StatusHelperElements with a specific Edge
/// </summary>
/// <param name="edge"></param>
internal void Remove(PolygonEdge edge)
{
this.EdgesHelpers.RemoveAll(she => she.Edge == edge);
}