/// <summary>
/// Delaunay三角网整体边长平均值(全局)
/// </summary>
/// <param name="tin"></param>
/// <returns></returns>
private double GlobalMean(ITin tin)
{
double length = 0;
ITinAdvanced tinAdvanced = tin as ITinAdvanced;
int edgeCount = tinAdvanced.EdgeCount;
for (int i = 1; i <= edgeCount; i++)
{
if (tinAdvanced.GetEdge(i).IsInsideDataArea)
{
length = length + tinAdvanced.GetEdge(i).Length;
}
}
return(length / (double)tinAdvanced.DataEdgeCount);
}
/// <summary>
/// 整体边长标准差(全局)
/// </summary>
/// <param name="tin"></param>
/// <param name="globalMean"></param>
/// <returns></returns>
private double GlobalStDev(ITin tin, double globalMean)
{
double a = 0;
ITinAdvanced tinAdvanced = tin as ITinAdvanced;
int edgeCount = tinAdvanced.EdgeCount;
// int edgeCount = tinAdvanced.DataEdgeCount;
for (int i = 1; i <= edgeCount; i++)
{
if (tinAdvanced.GetEdge(i).IsInsideDataArea)
{
ITinEdge tinEdge = tinAdvanced.GetEdge(i);
a = a + (globalMean - tinEdge.Length) * (globalMean - tinEdge.Length);
}
}
return(System.Math.Sqrt(a / (double)tinAdvanced.DataEdgeCount));
}