public FlatShape4D ToFlatShape()
{
IList <Point3D> points1 = (IList <Point3D>) new List <Point3D>();
foreach (List <Vector4D> vector4DList in (IEnumerable <Polyline4D>) this.ilist_0)
{
foreach (Vector4D vector4D in vector4DList)
{
points1.Add(vector4D.ToPoint3D());
Matrix4D?nullable = PolylineShape4D.smethod_0(points1);
if (nullable.HasValue)
{
Matrix4D transpose = nullable.Value.GetTranspose();
Point3D point3D = points1[0];
return(this.method_0(Transformation4D.Translation((Vector3D)point3D) * nullable.Value, transpose * Transformation4D.Translation(-point3D.X, -point3D.Y, -point3D.Z)));
}
}
}
if (points1.Count == 0)
{
return(new FlatShape4D(ShapeTool.NullShape, this.IsFilled));
}
HashSet <Point3D> point3DSet = new HashSet <Point3D>((IEnumerable <Point3D>)points1);
if (point3DSet.Count == 1)
{
Point3D point3D = points1[0];
return(this.method_0(Transformation4D.Translation((Vector3D)point3D), Transformation4D.Translation(-point3D.X, -point3D.Y, -point3D.Z)));
}
IList <Point3D> points2 = (IList <Point3D>) new List <Point3D>((IEnumerable <Point3D>)point3DSet);
Vector3D v = points2[1] - points2[0];
v.Normalize();
if (Vector3D.DotProduct(Vector3D.ZAxis, v) != 0.0)
{
Point3D point3D1 = points2[0];
Point3D point3D2 = points2[0];
if (point3D1.X != point3D2.X)
{
points2.Add(new Point3D(point3D2.X, point3D2.Y, point3D1.Z));
}
else
{
if (point3D1.Y == point3D2.Y)
{
return(this.method_0(Transformation4D.Translation((Vector3D)point3D1) * Transformation4D.RotateX(System.Math.PI / 2.0), Transformation4D.RotateX(-1.0 * System.Math.PI / 2.0) * Transformation4D.Translation(-point3D1.X, -point3D1.Y, -point3D1.Z)));
}
points2.Add(new Point3D(point3D2.X, point3D2.Y, point3D1.Z));
}
Matrix4D?nullable = PolylineShape4D.smethod_0(points2);
if (!nullable.HasValue)
{
return(new FlatShape4D(ShapeTool.NullShape, this.IsFilled));
}
Matrix4D transpose = nullable.Value.GetTranspose();
Point3D point3D3 = points2[0];
return(this.method_0(Transformation4D.Translation((Vector3D)point3D3) * nullable.Value, transpose * Transformation4D.Translation(-point3D3.X, -point3D3.Y, -point3D3.Z)));
}
Point3D point3D4 = points2[0];
return(this.method_0(Transformation4D.Translation((Vector3D)point3D4), Transformation4D.Translation(-point3D4.X, -point3D4.Y, -point3D4.Z)));
}