#lines
#by Craig Kloeden <craig@raru.adelaide.edu.au>
#lines made of line segments to show depth

-10	-3	0	0
-10	-3	0	1
-9	-3	0	1
-8	-3	0	1
-7	-3	0	1
-6	-3	0	1
-5	-3	0	1
-4	-3	0	1
-3	-3	0	1
-2	-3	0	1
-1	-3	0	1
0	-3	0	1
1	-3	0	1
2	-3	0	1
3	-3	0	1
4	-3	0	1
5	-3	0	1
6	-3	0	1
7	-3	0	1
8	-3	0	1
9	-3	0	1
10	-3	0	1
-10	-2	0	0
-10	-2	0	2
-9	-2	0	2
-8	-2	0	2
-7	-2	0	2
-6	-2	0	2
-5	-2	0	2
-4	-2	0	2
-3	-2	0	2
-2	-2	0	2
-1	-2	0	2
0	-2	0	2
1	-2	0	2
2	-2	0	2
3	-2	0	2
4	-2	0	2
5	-2	0	2
6	-2	0	2
7	-2	0	2
8	-2	0	2
9	-2	0	2
10	-2	0	2
-10	-1	0	0
-10	-1	0	3
-9	-1	0	3
-8	-1	0	3
-7	-1	0	3
-6	-1	0	3
-5	-1	0	3
-4	-1	0	3
-3	-1	0	3
-2	-1	0	3
-1	-1	0	3
0	-1	0	3
1	-1	0	3
2	-1	0	3
3	-1	0	3
4	-1	0	3
5	-1	0	3
6	-1	0	3
7	-1	0	3
8	-1	0	3
9	-1	0	3
10	-1	0	3
-10	0	0	0
-10	0	0	4
-9	0	0	4
-8	0	0	4
-7	0	0	4
-6	0	0	4
-5	0	0	4
-4	0	0	4
-3	0	0	4
-2	0	0	4
-1	0	0	4
0	0	0	4
1	0	0	4
2	0	0	4
3	0	0	4
4	0	0	4
5	0	0	4
6	0	0	4
7	0	0	4
8	0	0	4
9	0	0	4
10	0	0	4
-10	1	0	0
-10	1	0	5
-9	1	0	5
-8	1	0	5
-7	1	0	5
-6	1	0	5
-5	1	0	5
-4	1	0	5
-3	1	0	5
-2	1	0	5
-1	1	0	5
0	1	0	5
1	1	0	5
2	1	0	5
3	1	0	5
4	1	0	5
5	1	0	5
6	1	0	5
7	1	0	5
8	1	0	5
9	1	0	5
10	1	0	5
-10	2	0	0
-10	2	0	6
-9	2	0	6
-8	2	0	6
-7	2	0	6
-6	2	0	6
-5	2	0	6
-4	2	0	6
-3	2	0	6
-2	2	0	6
-1	2	0	6
0	2	0	6
1	2	0	6
2	2	0	6
3	2	0	6
4	2	0	6
5	2	0	6
6	2	0	6
7	2	0	6
8	2	0	6
9	2	0	6
10	2	0	6
-10	3	0	0
-10	3	0	7
-9	3	0	7
-8	3	0	7
-7	3	0	7
-6	3	0	7
-5	3	0	7
-4	3	0	7
-3	3	0	7
-2	3	0	7
-1	3	0	7
0	3	0	7
1	3	0	7
2	3	0	7
3	3	0	7
4	3	0	7
5	3	0	7
6	3	0	7
7	3	0	7
8	3	0	7
9	3	0	7
10	3	0	7