static void VerifyIntegrals()
{
string integrand = "x*x";
double startValue = -1;
double endValue = 1;
int iterationsNumber = 1000;
string parameterName = "x";
Integral.IntegralInputParameters inputParameters = new IntegralInputParameters
{
IntegrandExpression = integrand,
StartValue = startValue,
EndValue = endValue,
IterationsNumber = iterationsNumber,
ParameterName = parameterName
};
Integral.Integral integral = Integral.Integral.GetIntegral(CalculationType.LeftRectangle, inputParameters);
double resultLeftRectangle = integral.Calculate();
double resultLeftRectangleAsync = integral.CalculateAsync();
integral = Integral.Integral.GetIntegral(CalculationType.RightRectangle, inputParameters);
double resultRightRectangle = integral.Calculate();
double resultRightRectangleAsync = integral.CalculateAsync();
integral = Integral.Integral.GetIntegral(CalculationType.AverageRectangle, inputParameters);
double resultAverageRectangle = integral.Calculate();
double resultAverageRectangleAsync = integral.CalculateAsync();
integral = Integral.Integral.GetIntegral(CalculationType.Trapezium, inputParameters);
double resultTrapezium = integral.Calculate();
double resultTrapeziumAsync = integral.CalculateAsync();
integral = Integral.Integral.GetIntegral(CalculationType.Simpson, inputParameters);
double resultSimpson = integral.Calculate();
double resultSimpsonAsync = integral.CalculateAsync();
Console.WriteLine($"Left rectangle: {resultLeftRectangle}");
Console.WriteLine($"Left rectangle async: {resultLeftRectangleAsync}");
Console.WriteLine($"Right rectangle: {resultRightRectangle}");
Console.WriteLine($"Right rectangle async: {resultRightRectangleAsync}");
Console.WriteLine($"Average rectangle: {resultAverageRectangle}");
Console.WriteLine($"Average rectangle async: {resultAverageRectangleAsync}");
Console.WriteLine($"Trapezium: {resultTrapezium}");
Console.WriteLine($"Trapezium async: {resultTrapeziumAsync}");
Console.WriteLine($"Simpson: {resultSimpson}");
Console.WriteLine($"Simpson async: {resultSimpsonAsync}");
Console.ReadKey();
}
private void buttonCalculate_Click(object sender, EventArgs e)
{
if (double.TryParse(textBoxA.Text, out double a) && double.TryParse(textBoxB.Text, out a) &&
double.Parse(textBoxA.Text) < double.Parse(textBoxB.Text) && comboBoxMethods.SelectedIndex > -1)
{
List <string> sections = listBox1.Items.Cast <string>().ToList();
List <double> times = new List <double>();
List <double> parallelTimes = null;
if (checkBoxParallelMode.Checked)
{
parallelTimes = new List <double>();
}
CalculationType currentMethod;
switch (comboBoxMethods.SelectedIndex)
{
case 0: currentMethod = CalculationType.AverageRectangle; break;
case 1: currentMethod = CalculationType.Trapezium; break;
case 2: currentMethod = CalculationType.Simpson; break;
default: MessageBox.Show("Метод не был выбран!"); return;
}
IntegralInputParameters inputParameters = new IntegralInputParameters
{
IntegrandExpression = textBoxFunction.Text,
StartValue = int.Parse(textBoxA.Text),
EndValue = int.Parse(textBoxB.Text),
ParameterName = "x"
};
Integral currentIntegral = Integral.GetIntegral(currentMethod, inputParameters);
double result = 0.0;
Stopwatch stopwatch = new Stopwatch();
foreach (string section in sections)
{
currentIntegral.IterationsNumber = Convert.ToInt32(section);
stopwatch.Reset();
stopwatch.Start();
result = currentIntegral.Calculate();
stopwatch.Stop();
times.Add(stopwatch.ElapsedMilliseconds / 1000.0);
if (checkBoxParallelMode.Checked)
{
stopwatch.Reset();
stopwatch.Start();
currentIntegral.CalculateAsync();
stopwatch.Stop();
parallelTimes.Add(stopwatch.ElapsedMilliseconds / 1000.0);
}
}
labelResult.Text = $"Результат: {result.ToString()}";
this.chartResult.Series.Clear();
this.chartResult.Titles.Clear();
this.chartResult.Titles.Add("Зависимость времени выполнения от количества разбиений.");
Series series = this.chartResult.Series.Add("Время выполнения");
series.ChartType = SeriesChartType.Line;
for (int i = 0; i < times.Count; i++)
{
series.Points.AddXY(sections[i], times[i]);
}
if (checkBoxParallelMode.Checked)
{
Series parallelSeries = this.chartResult.Series.Add("Параллельный вариант");
parallelSeries.ChartType = SeriesChartType.Line;
for (int i = 0; i < parallelTimes.Count; i++)
{
parallelSeries.Points.AddXY(sections[i], parallelTimes[i]);
}
}
}
else
{
MessageBox.Show("Параметры A и B заданы не корректно!");
}
}
