/// <summary>
/// find which line segment our x fits into
/// </summary>
/// <param name="x"></param>
/// <returns></returns>
public float GetOutput(float x)
{
var target = 0;
if (x < XPoints[0])
{
return(YPoints[0]);
}
if (x > XPoints.Last())
{
return(YPoints.Last());
}
for (var counter = 0; counter < XPoints.Length; counter++)
{
if (x < XPoints[counter])
{
target = counter;
break;
}
if (Math.Abs(x - XPoints[counter]) < Tolerance)
{
return(YPoints[counter]);
}
}
var a = YPoints[target] - YPoints[target - 1]; //y2-y1
var b = XPoints[target] - XPoints[target - 1]; //x2-x1
var m = a / b; //slope
var intercept = YPoints[target] - m * XPoints[target]; //b
return(m * x + intercept);
}
public virtual async void MenuSwipe(object sender, PanUpdatedEventArgs e)
{
double totalLeftX = 0;
double totalRightX = 0;
if (e.StatusType == GestureStatus.Running || e.StatusType == GestureStatus.Started)
{
XPoints.Add(e.TotalX);
totalLeftX = -1 * MasterStack.TranslationX / 1.5 + 100 + e.TotalX;
totalRightX = MasterStack.TranslationX / 1.5 + 100 + e.TotalX;
if (totalLeftX < -700 || totalRightX > 700 || e.TotalX.Equals(0))
{
return;
}
if (e.TotalX < 0)
{
MasterStack.IsVisible = true;
await MasterStack.LayoutTo(
new Rectangle(-1 * MasterStack.TranslationX / 1.5 + 100 + e.TotalX, 0, 600, 600), 250U,
Easing.SinOut);
XPoints.RemoveAll(x => x > 0);
IsMasterDisplayed = true;
}
else
{
MasterStack.IsVisible = true;
await MasterStack.LayoutTo(
new Rectangle(MasterStack.TranslationX / 2 + 100 + e.TotalX, 0, 600, 600), 250U,
Easing.SinOut);
XPoints.RemoveAll(x => x < 0);
IsMasterDisplayed = true;
}
return;
}
if (e.StatusType == GestureStatus.Completed)
{
if (IsMasterDisplayed)
{
MasterStack.IsVisible = true;
await MasterStack.LayoutTo(new Rectangle(100 - MasterStack.TranslationX, 0, 600, 600), 250U, Easing.SinOut);
XPoints.Clear();
IsMasterDisplayed = true;
}
else
{
MasterStack.IsVisible = false;
await MasterStack.LayoutTo(new Rectangle(MasterStack.TranslationX - 100, 0, 600, 600), 250U, Easing.SinOut);
XPoints.Clear();
IsMasterDisplayed = false;
}
}
}
private void CalculateMinPoints()
{
XMin = XPoints.Min();
YMin = YPoints.Min();
ZMin = ZPoints.Min();
}
private void CalculateMaxPoints()
{
XMax = XPoints.Max();
YMax = YPoints.Max();
ZMax = ZPoints.Max();
}
