static public IList <XYZ> FlattenIntoPoints(this CurveLoop curveLoop, double height = 0, double tolerance = 0.0328)
{
IList <XYZ> points = new List <XYZ>();
foreach (Curve curve in curveLoop)
{
XYZ point0 = curve.GetEndPoint(0);
XYZ point1 = curve.GetEndPoint(1);
point0 = point0.Flatten(height);
point1 = point1.Flatten(height);
if (points.Where(p => p.IsAlmostEqualTo(point0, tolerance)).FirstOrDefault() == null)
{
points.Add(point0);
}
if (points.Where(p => p.IsAlmostEqualTo(point1, tolerance)).FirstOrDefault() == null)
{
points.Add(point1);
}
}
return(points);
}