Space frame structure

Hello all
I am modeling a space structure. I had this problem.
How can I add blue lines to the model?

2020-12-02_16-25-28
2020-12-02_16-29-49 cell path-1.gh (13.8 KB) space frame structure.3dm (66.2 KB)

Formian formula
() Formian scheme for configurations
similar to Fig 41: Mansard double layer
grid with binate on binate pattern and
some openings.
See Section 1.7 of Reference 1. (
)
L1=24; () Length in U1 direction ()
L2=24; () Length in U2 direction ()
D=2; () Depth of grid ()
m=8; () Frequency in
U1 direction, m must be even (
)
n=8; () Frequency in
U2 direction, n must be even (
)
T=rinid(m-1,n,2,2)|[1,1,1; 3,1,1]#
rinid(m,n-1,2,2)|[1,1,1; 1,3,1];
B=rinid(m,n+1,2,2)|[0,0,0; 2,0,0]#
rinid(m+1,n,2,2)|[0,0,0; 0,2,0];
W=rinid(m,n,2,2)|lamid(1,1)|[0,0,0; 1,1,1];
RN=lamid(m,n)|[m-4,n-4,0]#[m,n,0];
G=T#lux(RN)|(B#W);
Grid=bt(L1/(2m),L2/(2n),D)|G;
use &,vm(2),vt(2),vh(L1/2,-L2/6,3*L2,
L1/2,L2/2,0, L1/2,L2/2,1);
clear; draw Grid;