Function gmsh_sys::gmshModelGeoAddSpline

pub unsafe extern "C" fn gmshModelGeoAddSpline(
    pointTags: *mut c_int, 
    pointTags_n: usize, 
    tag: c_int, 
    ierr: *mut c_int
) -> c_int

Add a spline (Catmull-Rom) curve going through the points pointTags. If tag is positive, set the tag explicitly; otherwise a new tag is selected automatically. Create a periodic curve if the first and last points are the same. Return the tag of the spline curve.