94 lines
3.1 KiB
C#
94 lines
3.1 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Shapes;
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namespace GraphingCalculator.Controls
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{
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/// <summary>
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/// Interaction logic for LimitWindow.xaml
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/// </summary>
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public partial class IntegralWindow : Window
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{
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#region Properties
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public string ExpressionString
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{
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get { return inputExpression.Text; }
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set { inputExpression.Text = value; }
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}
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#endregion
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#region Constructors
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public IntegralWindow()
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{
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InitializeComponent();
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ExpressionString = "";
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}
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public IntegralWindow(string expression)
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{
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InitializeComponent();
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ExpressionString = expression;
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}
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#endregion
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#region Other routines
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private void Result (string result, bool error = false)
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{
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outputResult.Text = result;
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if (error) outputResult.Foreground = Brushes.DarkRed;
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else outputResult.Foreground = Brushes.Black;
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}
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#endregion
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#region Button handlers
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private void buttonClose_Click(object sender, RoutedEventArgs e)
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{
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this.Close();
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}
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private void buttonCalculate_Click(object sender, RoutedEventArgs e)
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{
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double val_beg, val_end, integr_res;
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Expression beg, end, expr;
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beg = new Expression(inputIntervalBeg.Text);
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end = new Expression(inputIntervalEnd.Text);
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expr = new Expression(inputExpression.Text);
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// Try to evaluate interval ends
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try { val_beg = beg.Evaluate(); }
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catch { Result("Failed to evaluate interval start.", true); return; }
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try { val_end = end.Evaluate(); }
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catch { Result("Failed to evaluate interval end.", true); return; }
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// Try to calculate the integral
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try { integr_res = Integrator.Integrate(expr, val_beg, val_end, "x"); }
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catch (Exception ex)
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{
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Result("Failed to evaluate expression. Message: " + ex.Message, true);
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Log.LogEvent("Failed to integrate expression: {0}", expr.ExpressionString);
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Log.LogEvent("> Interval: [{0}, {1}] = [{2}, {3}]", beg.ExpressionString, end.ExpressionString, val_beg, val_end);
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Log.LogEvent("> Message: {0}", ex.Message);
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Log.LogEvent("> Stack trace: {0}", ex.StackTrace);
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return;
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}
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// Show result
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Result(Math.Round(integr_res, 14).ToString());
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Log.LogEvent("Integrated expression: {0}", expr.ExpressionString);
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Log.LogEvent("> Interval: [{0}, {1}] = [{2}, {3}]", beg.ExpressionString, end.ExpressionString, val_beg, val_end);
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Log.LogEvent("> Result: {0}", integr_res);
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}
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#endregion
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}
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}
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