private void MenuShowChart_Clicked(object sender, RoutedEventArgs e)
{
try
{
Func <double, double> fx = this.Fx.CompileDynamicMethod();
Func <double, double> gx = this.Gx.CompileDynamicMethod();
if (this.chartData.YTo == null || this.chartData.YFrom == null) //chart data y-values were not initialized
{
Parallel.Invoke(() =>
{
Extremum extremum = DiagramWindow.FuncFindMinMax(new Func <double, double>[] { fx, gx }, this.chartData.XFrom, this.chartData.XTo);
this.chartData.YFrom = -Math.Abs(1.5 * Math.Max(Math.Abs(extremum.Min), Math.Abs(extremum.Max)));
this.chartData.YTo = -chartData.YFrom;
});
}
DiagramWindow diagWnd = new DiagramWindow(chartData.XFrom, chartData.XTo, chartData.YFrom, chartData.YTo, chartData.Dx);
diagWnd.DrawGraph(new Func <double, double>[] { fx, gx }, this.chartData.XFrom, this.chartData.XTo);
diagWnd.Owner = this;
diagWnd.WindowStartupLocation = System.Windows.WindowStartupLocation.CenterScreen;
diagWnd.ShowDialog();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void MenuChartConfig_Clicked(object sender, RoutedEventArgs e)
{
double xFrom = this.chartData.XFrom;
double xTo = this.chartData.XTo;
Func <double, double> fx = this.Fx.CompileDynamicMethod();
Func <double, double> gx = this.Gx.CompileDynamicMethod();
Extremum extremum = DiagramWindow.FuncFindMinMax(new Func <double, double>[] { fx, gx }, xFrom, xTo);
double yFrom = this.chartData.YFrom ?? -Math.Abs(1.5 * Math.Max(Math.Abs(extremum.Min), Math.Abs(extremum.Max)));
double yTo = -yFrom;
ChartConfigWindow configWnd = new ChartConfigWindow(xFrom, xTo, yFrom, yTo, this.chartData.Dx, this.BindYToFx, this.BindYToGx);
configWnd.ChartConfigChanged += delegate(object o, ChartEventArgs eArgs)
{
this.chartData.XFrom = eArgs.From.X;
this.chartData.XTo = eArgs.To.X;
this.chartData.YFrom = eArgs.From.Y;
this.chartData.YTo = eArgs.To.Y;
this.chartData.Dx = eArgs.Dx;
this.BindYToFx = eArgs.BindToFx;
this.BindYToGx = eArgs.BindToGx;
if (this.BindYToFx && this.BindYToGx)
{
extremum = DiagramWindow.FuncFindMinMax(new Func <double, double>[] { fx, gx }, xFrom, xTo);
}
else if (this.BindYToFx)
{
extremum = DiagramWindow.FuncFindMinMax(new Func <double, double>[] { fx }, xFrom, xTo);
}
else if (this.BindYToGx)
{
extremum = DiagramWindow.FuncFindMinMax(new Func <double, double>[] { gx }, xFrom, xTo);
}
this.chartData.YFrom = -Math.Abs(1.5 * Math.Max(Math.Abs(extremum.Min), Math.Abs(extremum.Max)));
this.chartData.YTo = -this.chartData.YFrom;
};
configWnd.Owner = this;
configWnd.WindowStartupLocation = System.Windows.WindowStartupLocation.CenterOwner;
configWnd.Show();
}
private void MenuReport_Click(object sender, RoutedEventArgs e)
{
try
{
Func <double, double> fx = this.Fx.CompileDynamicMethod();
Func <double, double> gx = this.Gx.CompileDynamicMethod();
if (this.chartData.YTo == null || this.chartData.YFrom == null) //chart data y-values were not initialized
{
Parallel.Invoke(() =>
{
Extremum extremum = DiagramWindow.FuncFindMinMax(new Func <double, double>[] { fx, gx }, this.chartData.XFrom, this.chartData.XTo);
this.chartData.YFrom = -Math.Abs(1.5 * Math.Max(Math.Abs(extremum.Min), Math.Abs(extremum.Max)));
this.chartData.YTo = -chartData.YFrom;
});
}
DiagramWindow diagWnd = new DiagramWindow(chartData.XFrom, chartData.XTo, chartData.YFrom, chartData.YTo, chartData.Dx);
diagWnd.Owner = this;
RenderTargetBitmap rtb = diagWnd.DrawGraphToImage(new Func <double, double>[] { fx, gx }, width: 800, height: 800);
diagWnd.Close();
PngBitmapEncoder png = new PngBitmapEncoder();
png.Frames.Add(BitmapFrame.Create(rtb));
using (Stream stm = File.Create("diagram.png"))
{
png.Save(stm);
}
//generate pdf--------------------------------------------------------
PdfDocument doc = new PdfDocument();
doc.Info.Title = "RootFinder Report";
PdfPage page1 = doc.AddPage();
// Get an XGraphics object for drawing
XGraphics gfx = XGraphics.FromPdfPage(page1);
// Create a font
XFont font = new XFont("Times New Roman", 14, XFontStyle.Regular);
//generate a report---------------------------------------------------------------------------------------------------------------
StringBuilder report = new StringBuilder();
string task = "Finding roots of equations using dynamic expression tree generation and function interpolation\r\n" +
"\tUsed algorithms: Shunting-yard algorithm and Lagrange interpolation.\r\n\r\n";
report.Append(task);
report.AppendFormat("Search interval: {0}\r\n", lblSrcInterval.Content);
report.AppendFormat("Eps.: {0}\r\n", lblEps.Content);
report.AppendFormat("Interpolation error: {0}\r\n", lblInterpError.Content);
report.AppendFormat("Number of roots: {0}\r\n", lblRoots.Content);
report.AppendFormat("Power of Lagrange polynomial: {0}\r\n", lblLagPower.Content);
report.AppendFormat("Roots are shown on the page #2\r\n", lblInterpError.Content);
//generate a report---------------------------------------------------------------------------------------------------------------
XTextFormatter tf = new XTextFormatter(gfx);
XRect rect = new XRect(10, 10, page1.Width - 10, 150);
gfx.DrawRectangle(XBrushes.SeaShell, rect);
//tf.Alignment = ParagraphAlignment.Left;
tf.DrawString(report.ToString(), font, XBrushes.Black, rect, XStringFormats.TopLeft);
XImage img = XImage.FromFile("diagram.png");
gfx.DrawImage(img, (page1.Width - img.PixelWidth / 1.5) / 2.0, 250, img.PixelWidth / 1.5, img.PixelHeight / 1.5);
//page#2 - roots
const int stringsPerPage = 50;
int k = 0;
for (; k < this.roots.Count; k += stringsPerPage)
{
StringBuilder rootsStr = new StringBuilder();
if (k == 0)
{
rootsStr.AppendLine("Roots found:\r\n");
}
for (int i = 0; i < stringsPerPage && i + k < this.roots.Count; i++)
{
rootsStr.AppendLine(string.Format("{0}", this.roots[i + k]));
}
PdfPage page2 = doc.AddPage();
gfx = XGraphics.FromPdfPage(page2);
gfx.DrawRectangle(XBrushes.White, rect);
tf = new XTextFormatter(gfx);
rect = new XRect(10, 10, page2.Width - 10, page2.Height - 10);
tf.DrawString(rootsStr.ToString(), font, XBrushes.Black, rect, XStringFormats.TopLeft);
}
using (FileStream fStream = new FileStream("report.pdf", FileMode.Create))
{
doc.Save(fStream);
}
Process.Start("report.pdf");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
