protected virtual void PositionEndLabel(Dot.Utility.Media.Diagram.Shapes.DiagramShape lab, bool atEnd, PointF a, PointF b, PointF c)
{
if ((!atEnd && this.FromLabelCentered) || (atEnd && this.ToLabelCentered))
{
if (base.IsApprox(a.X, b.X))
{
if (a.Y < b.Y)
{
lab.SetSpotLocation(0x20, a);
}
else
{
lab.SetSpotLocation(0x80, a);
}
}
else if (base.IsApprox(a.Y, b.Y))
{
if (a.X < b.X)
{
lab.SetSpotLocation(0x100, a);
}
else
{
lab.SetSpotLocation(0x40, a);
}
}
else if (a.X < b.X)
{
if (a.Y < b.Y)
{
lab.SetSpotLocation(2, a);
}
else
{
lab.SetSpotLocation(0x10, a);
}
}
else if (a.Y < b.Y)
{
lab.SetSpotLocation(8, a);
}
else
{
lab.SetSpotLocation(4, a);
}
}
else if (a.X < b.X)
{
if (b.Y <= c.Y)
{
lab.SetSpotLocation(0x10, a);
}
else
{
lab.SetSpotLocation(2, a);
}
}
else if (a.X > b.X)
{
if (b.Y <= c.Y)
{
lab.SetSpotLocation(8, a);
}
else
{
lab.SetSpotLocation(4, a);
}
}
else if (a.Y < b.Y)
{
if (b.X <= c.X)
{
lab.SetSpotLocation(4, a);
}
else
{
lab.SetSpotLocation(2, a);
}
}
else if (a.Y > b.Y)
{
if (b.X <= c.X)
{
lab.SetSpotLocation(8, a);
}
else
{
lab.SetSpotLocation(0x10, a);
}
}
else if (b.X <= c.X)
{
if (b.Y <= c.Y)
{
lab.SetSpotLocation(0x10, b);
}
else
{
lab.SetSpotLocation(2, b);
}
}
else if (b.Y <= c.Y)
{
lab.SetSpotLocation(8, b);
}
else
{
lab.SetSpotLocation(4, b);
}
}