/// <summary>
/// Добавить элемент в буфер
/// </summary>
/// <param name="Element">Добавляемый элемент</param>
public void Append(Slice Element)
{
if (slim.TryEnterWriteLock(555))
{
try
{
if (Element.slice != null)
{
CalculateIndexes();
array[last] = Element;
array[last].index = last;
}
}
finally
{
slim.ExitWriteLock();
}
}
}
/// <summary>
/// получить среднее значение параметра на этапе
/// </summary>
/// <param name="slice"></param>
/// <param name="index"></param>
/// <returns></returns>
private float GetMiddle(Slice[] slice, int index)
{
try
{
if (slice != null && index > -1)
{
double mean = 0.0f;
for (int i = 1; i < slice.Length; i++)
{
if (slice[i].slice != null && slice[i - 1].slice != null)
{
if (index <= slice[i].slice.Length && index <= slice[i - 1].slice.Length)
{
double p = (slice[i].slice[index] + slice[i - 1].slice[index]) / 2.0f;
double t = (double)(slice[i]._date.Ticks - slice[i - 1]._date.Ticks);
if (double.IsNaN(p) == false && double.IsNaN(t) == false)
{
mean += p * t;
}
}
}
}
double startTime = slice[0]._date.Ticks;
double finishTime = slice[slice.Length - 1]._date.Ticks;
double result = mean / (finishTime - startTime);
return (float)result;
}
}
catch { }
return float.NaN;
}
/// <summary>
/// максимальное значение
/// </summary>
/// <param name="slices"></param>
/// <param name="index"></param>
/// <returns></returns>
private float FindMin(Slice[] slices, int index)
{
try
{
float min = float.MaxValue;
foreach (Slice slice in slices)
{
if (slice.slice != null)
{
if (index > -1 && index <= slice.slice.Length)
{
if (slice.slice[index] < min)
{
min = slice.slice[index];
}
}
}
}
return min;
}
catch { }
return float.NaN;
}
/// <summary>
/// Минимальное значение
/// </summary>
/// <param name="slices"></param>
/// <param name="index"></param>
/// <returns></returns>
private float FindMax(Slice[] slices, int index)
{
try
{
float max = float.MinValue;
foreach (Slice slice in slices)
{
if (slice.slice != null)
{
if (index > -1 && index <= slice.slice.Length)
{
if (slice.slice[index] > max)
{
max = slice.slice[index];
}
}
}
}
return max;
}
catch { }
return float.NaN;
}
/// <summary>
/// Получить параметры за указанный период времени с конца массива
/// </summary>
/// <param name="start">Время начало выборки данных</param>
/// <param name="finish">Время конца выборки данных</param>
/// <param name="p1, p2, p3, p4, p5">Номера параметров от 0 до №-1</param>
/// <returns>Список данных из указанного диапазона</returns>
public Slice[] FindFromEnd(DateTime start, DateTime finish, int p1, int p2, int p3, int p4, int p5)
{
if (slim.TryEnterReadLock(300))
{
try
{
int[] Prms = { p1, p2, p3, p4, p5 };
if (last >= 0)
{
if (array[last]._date < start) return null;
if (array[first]._date > finish) return null;
int ind1 = -1;
{
int ind = last;
for (int j = 0; j < c_size; j++)
{
if (array[ind]._date > finish)
{
if (ind == first) break;
ind = ind - 1;
if (ind < 0) ind = size - 1;
}
else
{
ind1 = ind;
break;
}
}
}
if (ind1 != -1)
{
List<Slice> result = new List<Slice>(5);
if (result != null)
{
int ind = ind1;
for (int j = 0; j < c_size; j++)
{
if (array[ind]._date < start)
{
break;
}
// добавить элемент к result
if (array[ind].slice != null)
{
Slice buff = new Slice(5);
buff._date = array[ind]._date;
for (int jPrms = 0; jPrms < Prms.Length; jPrms++)
{
if (Prms[jPrms] >= 0)
{
buff.slice[jPrms] = array[ind].slice[Prms[jPrms]];
}
else
{
buff.slice[jPrms] = float.NaN;
}
}
result.Add(buff);
// result.Add(array[ind]);
}
if (ind == first) break;
ind = ind - 1;
if (ind < 0) ind = size - 1;
}
}
result.Reverse();
return result.ToArray();
}
}
}
finally
{
slim.ExitReadLock();
}
}
return null;
}
