Function gmsh_sys::gmshModelOccAddDisk

pub unsafe extern "C" fn gmshModelOccAddDisk(
    xc: f64, 
    yc: f64, 
    zc: f64, 
    rx: f64, 
    ry: f64, 
    tag: c_int, 
    ierr: *mut c_int
) -> c_int

Add a disk with center (xc, yc, zc) and radius rx along the x-axis and ry along the y-axis. If tag is positive, set the tag explicitly; otherwise a new tag is selected automatically. Return the tag of the disk.