controlPoint[
                          0 0 0, 1 0 0, 2 0 0, 3 0 0,
                          0 1 0, 1 1 0, 2 1 0, 3 1 0, 
                          0 2 0, 1 2 0, 2 2 0, 3 2 0, 
                          0 3 0, 1 3 0, 2 3 0, 3 3 0]
  
                  weight [
                          1.000000, 1.000000, 1.000000,
                          1.000000, 1.000000, 1.000000,
                          1.000000, 1.000000, 1.000000,
                          2.000000, 1.000000, 1.000000,
                          1.000000, 1.000000, 1.000000, 1.000000,]
                   }