private void surfaceButton2_Click(object sender, RoutedEventArgs e)
{
bool error = false;
try
{
if (_points.Count > 1)
{
HapticShape rect = new HapticPolyline(_points);
rect.color(Helper.getBrush(_currentColor));
_grid.Children.Add(rect);
}
else
{
error = true;
surfaceButton1.Background = Brushes.Red;
}
}
catch (FormatException fe)
{
error = true;
surfaceButton1.Background = Brushes.Red;
}
if (!error)
this.Close();
}
private bool displayFunction(bool useInt)
{
String function = textBox1.Text;
List<Point> functionValues = new List<Point>();
try
{
var regex = new Regex(Regex.Escape("x"));
var max = double.MinValue;
var min = double.MaxValue;
for (int i = 0; i < XY_RANGE; i++)
{
var funct = regex.Replace(function, i.ToString(), 1);
NCalc.Expression expr = new NCalc.Expression(funct);
var y = 0.0;
if (useInt)
{
y = (int)expr.Evaluate();
}
else
{
y = (double)expr.Evaluate();
}
if (y < min)
min = y;
if (y > max)
max = y;
functionValues.Add(new Point(i, y));
}
button1.Background = Brushes.Green;
// Remove all
this.container.Children.RemoveRange(initialCount, this.container.Children.Count);
if (hapticObjects.Count != 0)
{
foreach (HapticShape obj in hapticObjects)
{
HaptiQsManager.Instance.removeObserver(obj);
}
}
// Scale values
double scaleFactor = this.Height / XY_RANGE;
for (int i = 0; i < functionValues.Count; i++)
{
functionValues[i] = new Point(functionValues[i].X * (this.Width / XY_RANGE), this.Height - functionValues[i].Y * scaleFactor + (min < 0 ? min * scaleFactor : 0));
}
HapticPolyline polyline = new HapticPolyline(functionValues);
polyline.color(Brushes.White);
this.container.Children.Add(polyline);
hapticObjects.Add(polyline);
// Create y-axis
if (line1 != null)
{
HaptiQsManager.Instance.removeObserver(line1);
}
line1 = new HapticLine(new Point(0, 0), new Point(0, this.Height));
line1.color(Brushes.Blue);
this.container.Children.Add(line1);
// x-axis
double mid = this.Height + (min < 0 ? min * scaleFactor : 0);
if (line != null)
{
HaptiQsManager.Instance.removeObserver(line);
}
line = new HapticLine(new Point(0, mid), new Point(this.Width, mid));
line.color(Brushes.Blue);
line.thickness(5);
this.container.Children.Add(line);
}
catch (ArgumentException ae)
{
Console.WriteLine("Argument exception - function not valid " + ae.Message);
button1.Background = Brushes.Red;
return false;
}
catch (InvalidCastException ice)
{
Console.WriteLine("Invalid Cast Exception - function not valid " + ice.Message);
button1.Background = Brushes.Red;
return false;
}
catch (EvaluationException ee)
{
Console.WriteLine("Evaluation Exception- function not valid " + ee.Message);
button1.Background = Brushes.Red;
return false;
}
catch (Exception e)
{
Console.WriteLine("Exception- function not valid " + e.Message);
button1.Background = Brushes.Red;
return false;
}
return true;
}