NODE 734 — TERMINAL RELAY

{
  "type": "nurms",
  "control_mesh": [
    [
      0.211538,
      0.326923,
      0.519231,
      0.326923,
      0.75
    ],
    [
      0.173077,
      1.173077,
      0.173077,
      0.442308,
      0.173077
    ],
    [
      0.480769,
      0.173077,
      0.519231,
      0.75,
      0.307692
    ],
    [
      0.160256,
      0.083333,
      0.150641,
      0.22516,
      0.177617
    ],
    [
      0.080128,
      0.054487,
      0.068376,
      0.097845,
      0.137731
    ]
  ],
  "subdivisions": 1,
  "positions": [
    [
      0.0,
      0.0
    ],
    [
      0.25,
      0.0
    ],
    [
      0.5,
      0.0
    ],
    [
      0.75,
      0.0
    ],
    [
      1.0,
      0.0
    ],
    [
      0.0,
      0.25
    ],
    [
      0.25,
      0.25
    ],
    [
      0.5,
      0.25
    ],
    [
      0.75,
      0.25
    ],
    [
      1.0,
      0.25
    ],
    [
      0.0,
      0.5
    ],
    [
      0.25,
      0.5
    ],
    [
      0.5,
      0.5
    ],
    [
      0.75,
      0.5
    ]
  ],
  "note": "Subdivide the 5x5 control mesh N times using bilinear upsampling. After each level: original vertices stay in place, edge midpoints are averages of adjacent vertices, face centers are averages of 4 corners. Then sample heights at the given (u,v) positions using bilinear interpolation (or equivalently read the subdivided vertex at those coordinates). Map each height to a letter: int(height * 26) % 26 + 65 -> chr(). Concatenate to get the answer.",
  "hint": "NURMS subdivision cipher \u2014 difficulty 1. Control mesh: 5x5. Subdivision levels: 1. Word length: 14 characters. Apply Catmull-Clark subdivision repeatedly, sample heights at given (u,v), convert each height to A-Z via int(h*26)%26.",
  "answer_format": "comma-separated control point coordinates"
}