/// <summary>
/// Swaps the left point variance with right and vice versa
/// </summary>
/// <param name="original">point to find the opposite for</param>
/// <returns>opposite point</returns>
public static SplinePointVariance OppositeLR(this SplinePointVariance original)
{
if (original == SplinePointVariance.PointLeft)
{
return(SplinePointVariance.PointRight);
}
if (original == SplinePointVariance.PreLeft)
{
return(SplinePointVariance.PreRight);
}
if (original == SplinePointVariance.PostLeft)
{
return(SplinePointVariance.PostRight);
}
if (original == SplinePointVariance.PointRight)
{
return(SplinePointVariance.PointLeft);
}
if (original == SplinePointVariance.PreRight)
{
return(SplinePointVariance.PreLeft);
}
if (original == SplinePointVariance.PostRight)
{
return(SplinePointVariance.PostLeft);
}
return(original);
}
/// <summary>
/// Convert a point to the post variance, returns same point if it cannot be converted
/// </summary>
/// <param name="from">point to convert</param>
/// <returns>post variance version</returns>
public static SplinePointVariance ToPost(this SplinePointVariance from)
{
if (from == SplinePointVariance.PointLeft || from == SplinePointVariance.PreLeft)
{
return(SplinePointVariance.PostLeft);
}
if (from == SplinePointVariance.PointRight || from == SplinePointVariance.PreRight)
{
return(SplinePointVariance.PostRight);
}
if (from == SplinePointVariance.Point || from == SplinePointVariance.Pre)
{
return(SplinePointVariance.Post);
}
return(from);
}
/// <summary>
/// Is a point a pre point
/// </summary>
/// <param name="from">point to check</param>
/// <returns>true if the point is a pre variant</returns>
public static bool isPre(this SplinePointVariance from)
{
return(from == SplinePointVariance.Pre ||
from == SplinePointVariance.PreLeft ||
from == SplinePointVariance.PreRight);
}
/// <summary>
/// Is a point a post point
/// </summary>
/// <param name="from">point to check</param>
/// <returns>true if the point is a post variant</returns>
public static bool isPost(this SplinePointVariance from)
{
return(from == SplinePointVariance.Post ||
from == SplinePointVariance.PostLeft ||
from == SplinePointVariance.PostRight);
}
