/// <summary>
/// Add a spline (Catmull-Rom) going through points sampling the curves in
/// `curveTags'. The density of sampling points on each curve is governed by
/// `numIntervals'. If `tag' is positive, set the tag explicitly; otherwise a
/// new tag is selected automatically. Return the tag of the spline.
/// </summary>
public static int AddCompoundSpline(int[] curveTags, int numIntervals = 5, int tag = -1)
{
var index = Gmsh_Warp.GmshModelGeoAddCompoundSpline(curveTags, curveTags.LongLength, numIntervals, tag, ref Gmsh._staticreff);
Gmsh.CheckException(MethodBase.GetCurrentMethod().MethodHandle);
return(index);
}