public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
var start = new StateGeometry(values[0], values[1], values[2]);
var end = new StateGeometry(values[3], values[4], values[5]);
var vec = start.CenterOf(end);
return new Thickness(vec.X, vec.Y, 0, 0);
}
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
var start = new StateGeometry(values[0], values[1], values[2]);
var end = new StateGeometry(values[3], values[4], values[5]);
//get side for states
var startvec = start.CenterOf(end);
var endvec = end.CenterOf(start);
return Math.Sqrt(Math.Pow(startvec.X - endvec.X, 2) + Math.Pow(startvec.Y - endvec.Y, 2));
}
/// <summary>
/// Gets the coordinates of the connection point of state when connected to the given state
/// </summary>
/// <param name="state">other state</param>
/// <returns></returns>
public Vector CenterOf(StateGeometry state)
{
double dx = state.CenterX - CenterX;
double dy = state.CenterY - CenterY;
if (dx >= 0 && dy <= dx && dy >= -dx) return new Vector(Location.X + Size.X, CenterY);//Right
if (dx <= 0 && dy <= -dx && dy >= dx) return new Vector(Location.X, CenterY);//Left
if (dy >= 0 && dx <= dy && dx >= -dy) return new Vector(CenterX, Location.Y + Size.Y);//Bottom
return new Vector(CenterX, Location.Y);//Top
}
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
var start = new StateGeometry(values[0], values[1], values[2]);
var end = new StateGeometry(values[3], values[4], values[5]);
var startvec = start.CenterOf(end);
var endvec = end.CenterOf(start);
//dy/dx = tan(t) => t = arcTan(dy/dx)
double t = Math.Atan2(
Math.Abs(startvec.Y - endvec.Y),
Math.Abs(startvec.X - endvec.X)) * 180 / Math.PI;
if (endvec.X <= startvec.X && endvec.Y >= startvec.Y) return 180 - t;
if (endvec.X >= startvec.X && endvec.Y <= startvec.Y) return -t;
if (endvec.X <= startvec.X && endvec.Y <= startvec.Y) return 180 + t;
return t;
}