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> GetSkewIntersection(LineD line, LineD other)
{
System.Nullable <PointD> ret = default(System.Nullable <PointD>);
double x = ((other.B - line.B) / (line.A - other.A));
double y = other.A * x + other.B;
ret = new PointD(x, y);
if (!line.IsOnLine(ret.Value))
{
ret = null;
}
else if (!other.IsOnLine(ret.Value))
{
ret = null;
}
return(ret);
}