public bool addFunction(NewFunction windowToShow)
{
String[] parameters = new String[4];
Polynomial newFunction = new Polynomial();
if ((bool)windowToShow.ShowDialog())
{
newFunction.name = windowToShow.nameFunction;
newFunction.function = windowToShow.newFunction;
newFunction.drawingColor = windowToShow.color;
newFunction.xMin = windowToShow.xMin;
newFunction.xMax = windowToShow.xMax;
newFunction.yMin = windowToShow.yMin;
newFunction.yMax = windowToShow.yMax;
if (windowToShow.parameterA.IsEnabled)
parameters[0] = windowToShow.parameterA.Text;
else
parameters[0] = "-";
if (windowToShow.parameterB.IsEnabled)
parameters[1] = windowToShow.parameterB.Text;
else
parameters[1] = "-";
if (windowToShow.parameterC.IsEnabled)
parameters[2] = windowToShow.parameterC.Text;
else
parameters[2] = "-";
if (windowToShow.parameterN.IsEnabled)
parameters[3] = windowToShow.parameterN.Text;
else
parameters[3] = "-";
newFunction.plot.Points = calculatePointCollection(newFunction, parameters);
if (newFunction.plot.Points.Count != 0)
{
functions.Add(newFunction);
return true;
}
else
{
MessageBox.Show("Could not calculate the function", "New Function", MessageBoxButton.OK, MessageBoxImage.Exclamation);
return false;
}
}
return false;
}
public PointCollection calculatePointCollection(Polynomial function,String[] parameters)
{
Parser parser = new Parser();
if (parameters[0] != "-")
parser.AddVariable("a",Double.Parse(parameters[0]));
if (parameters[1] != "-")
parser.AddVariable("b", Double.Parse(parameters[1]));
if (parameters[2] != "-")
parser.AddVariable("c", Double.Parse(parameters[2]));
if (parameters[3] != "-")
parser.AddVariable("n", Double.Parse(parameters[3]));
PointCollection pathPoints = new PointCollection();
Point point=new Point();
double functionWidth = (Math.Abs(function.xMin) + function.xMax);
double distance=functionWidth/500;
point.X = function.xMin;
while (point.X <= function.xMin + functionWidth)
{
parser.AddVariable("x",point.X);
try
{
point.Y = parser.SimplifyDouble(function.function);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "New Function", MessageBoxButton.OK, MessageBoxImage.Exclamation);
break;
}
if(point.Y>=function.yMin && point.Y<=function.yMax)
pathPoints.Add(point);
point.X += distance;
parser.RemoveVariable("x");
}
return pathPoints;
}
