to do later? 2018

NodeTree

{
  "export_version": "0.079",
  "framed_nodes": {},
  "groups": {},
  "nodes": {
    "A Number": {
      "bl_idname": "SvNumberNode",
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        -334.58795166015625,
        -367.5118103027344
      ],
      "params": {
        "float_": 0.0,
        "int_": 9,
        "selected_mode": "int"
      },
      "width": 140.0
    },
    "A Number.001": {
      "bl_idname": "SvNumberNode",
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        -300.5088806152344,
        -220.95509338378906
      ],
      "params": {
        "float_": 0.0,
        "int_": 40,
        "selected_mode": "int"
      },
      "width": 140.0
    },
    "Assign Materials List": {
      "bl_idname": "SvAssignMaterialListNode",
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        610.7916870117188,
        96.184814453125
      ],
      "materials": [
        "M0",
        "M1",
        "M2",
        "M3"
      ],
      "params": {},
      "width": 200.0
    },
    "Inset faces": {
      "bl_idname": "SvInsetFaces",
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
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        115.28933715820312
      ],
      "params": {
        "depth": 0.08999999612569809,
        "inset_type": "region",
        "thickness": 0.03999999910593033
      },
      "width": 140.0
    },
    "List Input": {
      "bl_idname": "SvListInputNode",
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        -503.9411926269531,
        -174.15679931640625
      ],
      "params": {
        "int_": 10,
        "int_list": [
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      },
      "width": 140.0
    },
    "Plane MK2": {
      "bl_idname": "SvPlaneNodeMK2",
      "color": [
        0.0,
        0.5,
        0.5
      ],
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        -445.6921691894531,
        146.77545166015625
      ],
      "params": {
        "center": 1,
        "normalize": 1,
        "numx": 40,
        "numy": 40
      },
      "use_custom_color": true,
      "width": 140.0
    },
    "Scripted Node Lite": {
      "bl_idname": "SvScriptNodeLite",
      "color": [
        0.0,
        0.800000011920929,
        0.949999988079071
      ],
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        -68.32210540771484,
        -150.6959686279297
      ],
      "params": {
        "inject_params": 0,
        "injected_state": 0,
        "int_list": [
          0,
          0,
          0,
          40,
          0,
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          2,
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        ],
        "script_name": "turtle_random_walk.py",
        "script_str": "\"\"\"\nin   in_verts  v d=[] n=0\nin   in_faces  s d=[] n=0\nin   in_start_face_idx s d=0 n=2\nin   in_steps s d=40 n=2\nin   in_select_mask s d=[1,1,1] n=1\nin   in_paint_mask s d=[1,1,2] n=1\nin   in_seed s d=9 n=2\nout  out_face_mask   s\nout  out_face_data s\n\"\"\"\n\nimport random\n\nfrom sverchok.data_structure import zip_long_repeat\nfrom sverchok.utils.sv_bmesh_utils import bmesh_from_pydata\nfrom sverchok.utils.logging import debug, info\nfrom sverchok.utils.turtle import Turtle\n\nif in_select_mask is None:\n    in_select_mask = [[]]\nif in_paint_mask is None:\n    in_paint_mask = [[]]\n\nout_face_mask = []\nout_face_data = []\nobjects = zip_long_repeat(in_verts, in_faces, in_start_face_idx, in_steps,\n            in_select_mask, in_paint_mask, in_seed)\nfor verts, faces, start_face, steps, select_mask, paint_mask, seed in objects:\n    info(seed)\n    if isinstance(seed, (list, tuple)):\n        seed = seed[0]\n    random.seed(seed)\n    if isinstance(start_face, (list, tuple)):\n        if not start_face:\n            start_face = random.choice(range(len(faces)))\n        else:\n            start_face = start_face[0]\n    if isinstance(steps, (list, tuple)):\n        steps = steps[0]\n    \n    bm = bmesh_from_pydata(verts, [], faces, normal_update=True)\n    bm.verts.ensure_lookup_table()\n    bm.faces.ensure_lookup_table()\n    turtle = Turtle(bm)\n    \n    # When manually assigning the current_face, remember\n    # to assign current_loop correspondingly!\n    turtle.current_face = bm.faces[start_face]\n    turtle.current_loop = turtle.current_face.loops[0]\n    \n    if select_mask:\n        turtle.start_selecting(Turtle.MASK, select_mask)\n    else:\n        turtle.start_selecting()\n    if paint_mask:\n        turtle.start_painting(paint_mask)\n        \n    for i in range(steps):\n        steps = int( random.uniform(4, 12) )\n        for j in range(steps):\n            for k in range(len(turtle.current_face.edges)):\n                bound = turtle.is_looking_at_boundary\n                next_face = turtle.get_next_face(count=2)\n                if bound or next_face.select:\n                    r = random.uniform(0, 1)\n                    if r > 0.5:\n                        turtle.turn_next()\n                    else:\n                        turtle.turn_prev()\n                else:\n                    break\n            turtle.step()\n        rot = int( random.uniform(-3, 3) )\n        if rot > 0:\n            turtle.turn_next(rot)\n        else:\n            turtle.turn_next(- rot)\n        \n    new_face_mask = turtle.get_selection_mask()\n    new_face_data = turtle.get_painting_data()\n    bm.free()\n    out_face_mask.append(new_face_mask)\n    out_face_data.append(new_face_data)\n"
      },
      "snlite_ui": [],
      "use_custom_color": true,
      "width": 140.0
    },
    "Viewer BMesh": {
      "bl_idname": "SvBmeshViewerNodeV28",
      "color": [
        1.0,
        0.30000001192092896,
        0.0
      ],
      "height": 100.0,
      "hide": false,
      "label": "",
      "location": [
        395.14337158203125,
        102.3606185913086
      ],
      "params": {},
      "use_custom_color": true,
      "width": 140.0
    }
  },
  "update_lists": [
    [
      "Plane MK2",
      0,
      "Scripted Node Lite",
      0
    ],
    [
      "Plane MK2",
      2,
      "Scripted Node Lite",
      1
    ],
    [
      "A Number.001",
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      "Scripted Node Lite",
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    ],
    [
      "List Input",
      0,
      "Scripted Node Lite",
      5
    ],
    [
      "A Number",
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      "Scripted Node Lite",
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    ],
    [
      "Plane MK2",
      0,
      "Inset faces",
      0
    ],
    [
      "Plane MK2",
      2,
      "Inset faces",
      2
    ],
    [
      "Scripted Node Lite",
      1,
      "Inset faces",
      3
    ],
    [
      "Scripted Node Lite",
      0,
      "Inset faces",
      4
    ],
    [
      "Inset faces",
      0,
      "Viewer BMesh",
      0
    ],
    [
      "Inset faces",
      2,
      "Viewer BMesh",
      2
    ],
    [
      "Inset faces",
      3,
      "Viewer BMesh",
      3
    ],
    [
      "Viewer BMesh",
      0,
      "Assign Materials List",
      0
    ]
  ]
}