public static string GenerateCurvedPath(this LinkModel link)
{
var sX = link.GetMiddleSourceX();
var sY = link.GetMiddleSourceY();
double tX, tY;
if (link.IsAttached)
{
tX = link.GetMiddleTargetX();
tY = link.GetMiddleTargetY();
}
else
{
tX = link.OnGoingPosition !.X;
tY = link.OnGoingPosition.Y;
}
var cX = (sX + tX) / 2;
var cY = (sY + tY) / 2;
var curvePointA = GetCurvePoint(sX, sY, cX, cY, link.SourcePort.Alignment);
var curvePointB = GetCurvePoint(tX, tY, cX, cY, link.TargetPort?.Alignment);
return(FormattableString.Invariant($"M {sX} {sY} C {curvePointA}, {curvePointB}, {tX} {tY}"));
}
public static string CalculateAngleForTargetArrow(this LinkModel link)
{
var sX = link.GetMiddleSourceX();
var sY = link.GetMiddleSourceY();
double tX, tY;
if (link.IsAttached)
{
tX = link.GetMiddleTargetX();
tY = link.GetMiddleTargetY();
}
else
{
tX = link.OnGoingPosition !.X;
tY = link.OnGoingPosition.Y;
}
var angle = 90 + Math.Atan2(tY - sY, tX - sX) * 180 / Math.PI;
return(angle.ToString(CultureInfo.InvariantCulture));
}
public static string GenerateCurvedPath(this LinkModel link)
{
var sX = link.GetMiddleSourceX();
var sY = link.GetMiddleSourceY();
double tX, tY;
if (link.IsAttached)
{
tX = link.GetMiddleTargetX();
tY = link.GetMiddleTargetY();
}
else
{
tX = link.OnGoingPosition !.X;
tY = link.OnGoingPosition.Y;
}
return($"M {sX.ToInvariantString()} {sY.ToInvariantString()} " +
$"C {((sX + tX) / 2).ToInvariantString()} {sY.ToInvariantString()}," +
$" {((sX + tX) / 2).ToInvariantString()} {tY.ToInvariantString()}," +
$" {tX.ToInvariantString()} {tY.ToInvariantString()}");
}
