private static System.Nullable <PointD> GetBothVerticalIntersection(LineD line, LineD other)
{
System.Nullable <PointD> ret = null;
if (line.X.X == other.X.X)
{
if (line.X.Y.IsBetween(other.X.Y, other.Y.Y))
{
ret = line.X;
}
else if (line.Y.Y.IsBetween(other.X.Y, other.Y.Y))
{
ret = line.Y;
}
else
{
ret = null;
}
}
else
{
ret = null;
}
return(ret);
}
private static System.Nullable <PointD> GetVerticalIntersection(LineD vertical, LineD other)
{
System.Nullable <PointD> ret = default(System.Nullable <PointD>);
double y = other.A * vertical.X.X + other.B;
ret = new PointD(vertical.X.X, y);
if (!vertical.IsOnLine(ret.Value))
{
ret = null;
}
else if (!other.IsOnLine(ret.Value))
{
ret = null;
}
return(ret);
}
private static System.Nullable <PointD> GetHorizontalIntersection(LineD horizontal, LineD other)
{
System.Nullable <PointD> ret = null;
ret = GetSkewIntersection(horizontal, other);
return(ret);
}