Function rgmsh::interface::geo::add_line

pub unsafe extern "C" fn add_line(
    startTag: i32, 
    endTag: i32, 
    tag: i32, 
    ierr: *mut i32
) -> i32

Add a straight line segment between the two points with tags startTag and endTag. If tag is positive, set the tag explicitly; otherwise a new tag is selected automatically. Return the tag of the line.