[ask] how to use an array of double in Java Processing

Processing Coding Questions
6

You’re right. However, I’ve noticed there are 6 2D arrays, named from param1 to param6. :nerd_face:

They can all easily become 1 unified 3D array instead: :flushed:

final double[][][] params = { // [6]x[6]x[]
  { // param1[14]
    { 1, 1, 1, 1, 0.792019601, 1, 1, -1, -1, -1, -1, -1, -0.792019601, -1 }, 
    { -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, 1 }, 
    { -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, 1 }, 
    { -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, 1 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558, 0.033558 }
  }, 

  { // param2[18]
    { 1, 1, 1, 1, 0.318464496, 1, 1, 1, 0.769380154, -1, -1, -1, -1, -0.087844649, -1, -1, -1, -1 }, 
    { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, 
    { -0.25701, -0.21729, -0.09348, -0.08653, 0.145652, 0.062454, -0.01667, 0.079085, 0.0012, -0.4499, -0.44327, -0.46571, -0.42028, -0.42201, -0.44852, -0.41926, -0.39713, -0.40579 }, 
    { -121085, -116608, -107282, -112798, -0.88837, -0.94401, -107663, -0.90106, -115809, -0.84784, -0.83931, -0.80587, -0.70346, -0.70533, -0.92365, -0.9593, -0.97531, -0.94895 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568, -0.86568 }
  }, 

  { // param3[19]
    { 1, 1, 1, 1, 0.456578608, 1, 1, 1, 1, -1, -0.187059758, -1, -1, -1, -1, -1, -1, -1, -0.26951885 }, 
    { 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, 
    { -1.25614, -1.19248, -0.994, -0.98286, -0.66881, -0.87087, -0.65989, -0.84223, -0.7936, -1.22893, -1.19252, -1.29349, -0.98669, -0.98892, -1.18328, -1.36766, -1.32095, -0.24681, 0.483479 }, 
    { 0.323382, 0.354186, 0.418358, 0.380401, 0.487666, 0.415735, 0.365585, 0.359688, 0.345772, 0.074203, -0.00114, 0.093422, 0.007426, -0.04313, 0.033755, 0.055782, 0.035636, -0.17976, -0.42344 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { -0.02824, -0.02825, -0.02826, -0.02827, -0.02828, -0.02829, -0.02830, -0.02831, -0.02832, -0.02833, -0.02834, -0.02835, -0.02836, -0.02837, -0.02838, -0.02839, -0.02840, -0.02841, -0.02842 }
  }, 

  { // param4[20]
    { 1, 1, 1, 1, 1, 1, 0.463702921, 1, 1, 1, -1, -1, -0.705748012, -1, -1, -1, -1, -1, -1, -0.75795491 }, 
    { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1 }, 
    { 1.017038, 1.046933, 0.902235, 0.736103, 0.860032, 0.736503, 0.724111, 0.655464, 0.67848, 0.713734, 1.140196, 1.150551, 1.115492, 1.14235, 1.18807, 1.222666, 1.209121, 0.924121, 0.126399, -0.54345 }, 
    { -0.37552, -0.41018, -0.42873, -0.4702, -0.46058, -0.45412, -0.49043, -0.37792, -0.39576, -0.40371, -0.06427, -0.05869, -0.03677, -0.11394, -0.1373, -0.14779, -0.13052, -0.01386, 0.167516, 0.318457 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { -0.24815, -0.24816, -0.24817, -0.24818, -0.24819, -0.24820, -0.24821, -0.24822, -0.24823, -0.24824, -0.24825, -0.24826, -0.24827, -0.24828, -0.24829, -0.24830, -0.24831, -0.24832, -0.24833, -0.24834 }
  }, 

  { // param5[16]
    { 1, 1, 1, 1, 1, 1, 0.883359223, 1, -1, -1, -1, -1, -0.883359223, -1, -1, -1 }, 
    { -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1 }, 
    { 0.121326, 0.140013, 0.049562, -0.05429, -0.04718, 0.02318, -0.09362, -0.06178, 0.403332, 0.425519, 0.363987, 0.382795, 0.394049, 0.43115, 0.31879, 0.34725 }, 
    { 1.162903, 1.107373, 1.07764, 1.011192, 0.96486, 1.026602, 0.969164, 0.978771, 0.900346, 0.785385, 0.929671, 0.679563, 0.646683, 0.83863, 0.872239, 0.8415 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { -0.98695, -0.98696, -0.98697, -0.98698, -0.98699, -0.98700, -0.98701, -0.98702, -0.98703, -0.98704, -0.98705, -0.98706, -0.98707, -0.98708, -0.98709, -0.98710 }
  }, 

  { // param6[16]
    { 1, 1, 1, 0.339561015, 1, 1, 1, 1, -1, -1, -1, -1, -0.339561015, -1, -1, -1 }, 
    { -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, -1 }, 
    { -0.20354, -0.19362, -0.2272, -0.15921, -0.20148, -0.15769, -0.12455, -0.13752, 0.110591, 0.144587, 0.050308, 0.079125, 0.096368, 0.153214, -0.01894, 0.024663 }, 
    { 0.168873, 0.173118, 0.18977, 0.240751, 0.131133, 0.113386, 0.105415, 0.118537, -0.19213, -0.24665, -0.17823, -0.29683, -0.31242, -0.2214, -0.20546, -0.22004 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { 0.03956, 0.03957, 0.03958, 0.03959, 0.03960, 0.03961, 0.03962, 0.03963, 0.03964, 0.03965, 0.03966, 0.03967, 0.03968, 0.03969, 0.03970, 0.03971 }
  }
};

This way, this statement: sf1 += (param1[0][i] * param1[1][i] * (param1[2][i] + param1[3][i]) * param1[4][i]) + param1[5][i];

Becomes: sf1 += (params[0][0][i] * params[0][1][i] * (params[0][2][i] + params[0][3][i]) * params[0][4][i]) + params[0][5][i];

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