void GetAB(int k, out double begin, out double end, out int direct)
{
double i1, i2, L, T, w;
BPD curBPD = BPDList.ElementAt(k);
if (k == 0)
{
i2 = (BPDList.ElementAt(k + 1).H - curBPD.H) / (BPDList.ElementAt(k + 1).PK - curBPD.PK);
i1 = -i2;
}
else if (k == BPDList.Count - 1)
{
i1 = (curBPD.H - BPDList.ElementAt(k - 1).H) / (curBPD.PK - BPDList.ElementAt(k - 1).PK);
i2 = -i1;
}
else
{
i1 = (curBPD.H - BPDList.ElementAt(k - 1).H) / (curBPD.PK - BPDList.ElementAt(k - 1).PK);
i2 = (BPDList.ElementAt(k + 1).H - curBPD.H) / (BPDList.ElementAt(k + 1).PK - curBPD.PK);
}
w = i2 - i1;
L = curBPD.R * Math.Abs(w);
T = curBPD.R * Math.Abs(w) * 0.5;
begin = curBPD.PK - T;
end = curBPD.PK + T;
direct = w < 0 ? -1 : 1;
}
public double GetBG(double pk)
{
double res = 0;
if (pk < BPDList.First().PK || pk > BPDList.Last().PK)
{
throw new ArgumentOutOfRangeException("里程不在设计范围内");
}
else if (BPDList.Exists(x => x.PK == pk))
{
res = BPDList.Find(x => x.PK == pk).H;
}
else
{
BPD[] tmp = BPDList.ToArray();
List <BPD> tmpBPDList = tmp.ToList();
BPD pt = new BPD {
PK = pk
};
tmpBPDList.Add(pt);
tmpBPDList.Sort((x, y) => x.PK.CompareTo(y.PK));
int kk = tmpBPDList.IndexOf(pt);
double CC = (BPDList.ElementAt(kk).H - BPDList.ElementAt(kk - 1).H) / (BPDList.ElementAt(kk).PK - BPDList.ElementAt(kk - 1).PK);
double y0 = (pk - BPDList.ElementAt(kk - 1).PK) * CC + BPDList.ElementAt(kk - 1).H;
double dy = 0;
GetAB(kk - 1, out double beginA, out double endA, out int dirA);
GetAB(kk, out double beginB, out double endB, out int dirB);
if (pk <= endA)
{
dy = (endA - pk) * (endA - pk) / BPDList.ElementAt(kk - 1).R * 0.5 * dirA;
}
else if (pk >= beginB)
{
dy = (pk - beginB) * (pk - beginB) / BPDList.ElementAt(kk).R * 0.5 * dirB;
}
else
{
dy = 0;
}
res = y0 + dy;
}
return(res);
}
/// <summary>
/// 竖曲线
/// </summary>
/// <param name="name">竖曲线名称</param>
/// <param name="inputs">输入资源</param>
public SQX(string name, byte[] inputs)
{
Name = name;
BPDList = new List <BPD>();
var ff = inputs;
Decoder d = Encoding.UTF8.GetDecoder();
int charSize = d.GetCharCount(ff, 0, ff.Length);
char[] chs = new char[charSize];
d.GetChars(ff, 0, ff.Length, chs, 0);
string s = new string(chs);
var ss = s.Split('\n');
foreach (string item in ss)
{
BPD pt = new BPD();
try
{
string line = item.TrimEnd('\r');
var xx = Regex.Split(line, @"\s+");
pt.PK = double.Parse(xx[0]);
pt.H = double.Parse(xx[1]);
if (xx.Length == 3)
{
pt.R = double.Parse(xx[2]);
}
else
{
pt.R = -1;
}
BPDList.Add(pt);
}
catch (Exception)
{
throw;
}
}
BPDList.Sort((x, y) => x.PK.CompareTo(y.PK));
}