private void SetCodeString(GraphFunction value)
{
if (selectedFunction != null)
selectedFunction.Code = CodeDocument.Text;
CodeDocument.Text = value.Code;
}
private void RemoveFunction(GraphFunction function)
{
Functions.Remove(function);
if (function.PlotSeries != null)
PlotModel.Series.Remove(function.PlotSeries);
if (function.DerivedSeries != null)
PlotModel.Series.Remove(function.DerivedSeries);
if (function.IntegralSeries != null)
PlotModel.Series.Remove(function.IntegralSeries);
PlotModel.InvalidatePlot(true);
}
private void InitFunctionSeries(GraphFunction function)
{
if (function.PlotSeries == null)
{
function.PlotSeries = new LineSeries();
function.PlotSeries.Color = GetNextColor();
PlotModel.Series.Add(function.PlotSeries);
function.Color = new SolidColorBrush(oxy.ConverterExtensions.ToColor(function.PlotSeries.ActualColor));
}
if (function.DerivedSeries == null)
{
function.DerivedSeries = new LineSeries();
function.DerivedSeries.Color = function.PlotSeries.ActualColor;
function.DerivedSeries.LineStyle = LineStyle.Dash;
PlotModel.Series.Add(function.DerivedSeries);
}
if (function.IntegralSeries == null)
{
function.IntegralSeries = new AreaSeries();
function.IntegralSeries.Color = function.PlotSeries.ActualColor;
PlotModel.Series.Add(function.IntegralSeries);
}
}
private void applyFunction(GraphFunction func)
{
suppressOutput = true;
SchemeMathWrapper.VerifyIsProcedure(func.Code);
suppressOutput = false;
InitFunctionSeries(func);
var xydata = SchemeMathWrapper.CalcPlotData(func.Code, XMin, XMax, func.Step);
var xydatapoints = xydata.Select((xy) => new DataPoint(xy.Item1, xy.Item2));
func.PlotSeries.Points.Clear();
func.PlotSeries.Points.AddRange(xydatapoints);
func.PlotSeries.Title = func.Name;
if (func.ShowDerivative)
{
var dxydata = SchemeMathWrapper.CalcDerivedPlotData(func.Code, XMin, XMax, func.Step);
var dxydatapoints = dxydata.Select((xy) => new DataPoint(xy.Item1, xy.Item2));
func.DerivedSeries.Points.Clear();
func.DerivedSeries.Points.AddRange(dxydatapoints);
func.DerivedSeries.Title = "'" + func.Name;
}
if (func.ShowIntegral)
{
IEnumerable<System.Tuple<double, double>> coords;
if (func.IsLeftIntegral)
coords = SchemeMathWrapper.CalcLeftIntegralCoords(func.Code, func.IntegralMin,
func.IntegralMax, func.IntegralRes);
else if (func.IsMiddleIntegral)
coords = SchemeMathWrapper.CalcMidpointIntegralCoords(func.Code, func.IntegralMin,
func.IntegralMax, func.IntegralRes);
else if (func.IsRightIntegral)
coords = SchemeMathWrapper.CalcRightIntegralCoords(func.Code, func.IntegralMin,
func.IntegralMax, func.IntegralRes);
else
throw new ArgumentException("Integral mode not selected!");
var deltaX = SchemeMathWrapper.CalcDeltaX(func.IntegralMin,
func.IntegralMax, func.IntegralRes);
func.IntegralSeries.Points.Clear();
func.IntegralSeries.Points2.Clear();
foreach (var coord in coords)
{
func.IntegralSeries.Points.Add(new DataPoint(coord.Item1, coord.Item2));
func.IntegralSeries.Points.Add(new DataPoint(coord.Item1 + deltaX, coord.Item2));
}
var bottomLineSeries = new LineSeries();
func.IntegralSeries.Points2.Add(new DataPoint(func.IntegralMin, 0));
func.IntegralSeries.Points2.Add(new DataPoint(func.IntegralMax, 0));
var area = SchemeMathWrapper.CalcDefiniteIntegral(func.IntegralMin,
func.IntegralMax, func.IntegralRes, coords);
func.IntegralSeries.Title = "''" + func.Name + "(A: " + area.ToString("G5") + ")";
}
SetFunctionVisibility(func);
}
private void AddFunction()
{
var func = new GraphFunction();
func.Samples = SchemeMathWrapper.StepToSamples(XMin, XMax, func.Step);
func.PropertyChanged += function_propertyChanged;
Functions.Add(func);
}
private static void SetFunctionVisibility(GraphFunction function)
{
function.PlotSeries.IsVisible = function.IsEnabled;
function.DerivedSeries.IsVisible = function.IsEnabled && function.ShowDerivative;
function.IntegralSeries.IsVisible = function.IsEnabled && function.ShowIntegral;
}