private void RenderFrame()
{
try
{
plotFrame.Render();
}
catch (Exception e)
{
DialogUtilities.ShowSpecificPlotError("Rendering Error", e, true, "The plot could not be drawn. Make sure your plots are valid.");
}
}
private async void FunctionPlot_Click(object sender, RoutedEventArgs e)
{
var dlg = new FunctionPlotDialog();
dlg.Owner = App.Current.MainWindow;
if (dlg.ShowDialog() == true)
{
string expression = dlg.expressionTextBox.Text;
Func <double, double?> f_unsafe;
try
{
f_unsafe = await CSharpScript.EvaluateAsync <Func <double, double?> >("x=>" + expression, ScriptOptions.Default.WithImports("System.Math"));
}
catch (CompilationErrorException error)
{
DialogUtilities.ShowSpecificPlotError("Compilation Error", error, false, "Make sure your expression is valid C#. Note that ternary operators that may return null are not supported by C# in this context. Returning double.NaN will work fine.");
return;
}
double?f_temp(double x)
{
try
{
double?y = f_unsafe(x);
if (y.HasValue && !double.IsFinite(y.Value))
{// Make sure it ain't infinity, negative infinity, NaN, etc
return(null);
}
return(f_unsafe(x));
}
catch (Exception e)
{
return(null);
}
}
Func <double, double?> f = x => f_temp(x);
PlotParameters plotParams = new PlotParameters()
{
data = f,
drawSettings = new DrawSettings()
{
type = PlotType.function,
label = "y = " + expression,
}
};
try
{
((App)App.Current).AddSeries(plotParams);
}
catch
{
DialogUtilities.ShowGenericPlotNotAddedError();
return;
}
}
}