{
  "schema": "spatial-lab.project/1",
  "id": "braided-atrium",
  "name": "Braided atrium",
  "parameters": {
    "radius": 11,
    "lobe": 3.2,
    "rise": 4.8,
    "width": 1.25,
    "thickness": 0.24,
    "twist": 360,
    "samples": 240,
    "levels": 3
  },
  "nodes": [
    {
      "id": "braid-path",
      "op": "curve",
      "params": {
        "xyz": [
          "(radius+lobe*cos(3*t))*cos(2*t)",
          "(radius+lobe*cos(3*t))*sin(2*t)",
          "rise*sin(3*t)"
        ],
        "domain": [
          0,
          "tau"
        ],
        "segments": "samples",
        "closed": true
      },
      "visible": false,
      "role": "route"
    },
    {
      "id": "braid-frames",
      "op": "frames",
      "inputs": {
        "path": "braid-path"
      },
      "params": {
        "twist_degrees": "twist"
      },
      "visible": false
    },
    {
      "id": "braid-section",
      "op": "sweep",
      "inputs": {
        "frames": "braid-frames"
      },
      "params": {
        "profile": [
          [
            "-width/2",
            "-thickness/2"
          ],
          [
            "width/2",
            "-thickness/2"
          ],
          [
            "width/2",
            "thickness/2"
          ],
          [
            "-width/2",
            "thickness/2"
          ]
        ]
      },
      "visible": false
    },
    {
      "id": "braided-galleries",
      "name": "Braided galleries",
      "op": "repeat",
      "inputs": {
        "source": "braid-section"
      },
      "params": {
        "count": "levels",
        "translate": [
          0,
          0,
          6.5
        ],
        "rotate": [
          0,
          0,
          37
        ],
        "scale": 0.87
      },
      "color": [
        0.37,
        0.56,
        0.68
      ],
      "role": "gallery"
    },
    {
      "id": "ring-path",
      "op": "curve",
      "params": {
        "xyz": [
          "(radius+lobe+2.6)*cos(t)",
          "(radius+lobe+2.6)*sin(t)",
          "-6+0.65*sin(4*t)"
        ],
        "segments": 144,
        "closed": true
      },
      "visible": false
    },
    {
      "id": "ring-frames",
      "op": "frames",
      "inputs": {
        "path": "ring-path"
      },
      "visible": false
    },
    {
      "id": "ring-section",
      "op": "sweep",
      "inputs": {
        "frames": "ring-frames"
      },
      "params": {
        "profile": [
          [
            -0.13,
            -0.11
          ],
          [
            0.13,
            -0.11
          ],
          [
            0.13,
            0.11
          ],
          [
            -0.13,
            0.11
          ]
        ]
      },
      "visible": false
    },
    {
      "id": "outer-rings",
      "name": "Contour rings",
      "op": "repeat",
      "inputs": {
        "source": "ring-section"
      },
      "params": {
        "count": 9,
        "translate": [
          0,
          0,
          2.8
        ],
        "rotate": [
          0,
          0,
          11
        ]
      },
      "color": [
        0.63,
        0.68,
        0.73
      ],
      "role": "structure"
    },
    {
      "id": "spine-path",
      "op": "curve",
      "params": {
        "xyz": [
          "(radius+lobe+2.6)*cos(t)",
          "(radius+lobe+2.6)*sin(t)",
          "-6+18*t/pi"
        ],
        "domain": [
          0,
          "1.35*pi"
        ],
        "segments": 112
      },
      "visible": false
    },
    {
      "id": "spine-frames",
      "op": "frames",
      "inputs": {
        "path": "spine-path"
      },
      "visible": false
    },
    {
      "id": "spine-section",
      "op": "sweep",
      "inputs": {
        "frames": "spine-frames"
      },
      "params": {
        "profile": [
          [
            -0.18,
            -0.18
          ],
          [
            0.18,
            -0.18
          ],
          [
            0.18,
            0.18
          ],
          [
            -0.18,
            0.18
          ]
        ]
      },
      "visible": false
    },
    {
      "id": "spiral-spines",
      "name": "Spiral spines",
      "op": "repeat",
      "inputs": {
        "source": "spine-section"
      },
      "params": {
        "count": 4,
        "rotate": [
          0,
          0,
          90
        ]
      },
      "color": [
        0.69,
        0.47,
        0.29
      ],
      "role": "structure"
    },
    {
      "id": "saddle-shell",
      "name": "Lower saddle",
      "op": "surface",
      "params": {
        "xyz": [
          "u",
          "v",
          "0.025*(u*u-v*v)-9"
        ],
        "u_domain": [
          -7,
          7
        ],
        "v_domain": [
          -7,
          7
        ],
        "u_segments": 28,
        "v_segments": 28,
        "thickness": 0.22
      },
      "color": [
        0.57,
        0.66,
        0.58
      ],
      "role": "shell"
    }
  ]
}