Function gmsh_sys::gmshModelGeoAddEllipseArc

pub unsafe extern "C" fn gmshModelGeoAddEllipseArc(
    startTag: c_int, 
    centerTag: c_int, 
    majorTag: c_int, 
    endTag: c_int, 
    tag: c_int, 
    nx: f64, 
    ny: f64, 
    nz: f64, 
    ierr: *mut c_int
) -> c_int

Add an ellipse arc (strictly smaller than Pi) between the two points startTag and endTag, with center centerTag and major axis point majorTag. If tag is positive, set the tag explicitly; otherwise a new tag is selected automatically. If (nx, ny, nz) != (0,0,0), explicitly set the plane of the circle arc. Return the tag of the ellipse arc.