REFINE IN INTERIOR OF SQUARE
0.0 30.0 20.0 0.15 0.5 10 500
2 12 3 0
4 4 4
0 -1 -2
0.00  0.00
1.00  0.00
1.00  1.00
0.00  1.00
0.20  0.30
0.30  0.30
0.30  0.40
0.20  0.40
0.245 0.345
0.255 0.345
0.255 0.355
0.245 0.355
     1     2     3     4
     5     6     7     8
     9    10    11    12