Function gmsh_sys::gmshModelMeshGetNodesForPhysicalGroup

pub unsafe extern "C" fn gmshModelMeshGetNodesForPhysicalGroup(
    dim: c_int, 
    tag: c_int, 
    nodeTags: *mut *mut usize, 
    nodeTags_n: *mut usize, 
    coord: *mut *mut f64, 
    coord_n: *mut usize, 
    ierr: *mut c_int
)

Get the nodes from all the elements belonging to the physical group of dimension dim and tag tag. nodeTags contains the node tags; coord is a vector of length 3 times the length of nodeTags that contains the x, y, z coordinates of the nodes, concatenated: [n1x, n1y, n1z, n2x, ...].