{
  "id": "feedback_tunnel",
  "name": "Feedback Tunnel",
  "description": "A hypnotic tunnel created by feeding a transformed, blurred frame back into itself over a noise seed.",
  "tags": ["feedback", "generative", "tunnel", "abstract", "noise"],
  "difficulty": "beginner",
  "td_version_min": "2022",
  "nodes": [
    {
      "name": "noise1",
      "type": "noiseTOP",
      "parameters": { "period": 3, "monochrome": 1 },
      "comment": "Seed texture that feeds the loop"
    },
    { "name": "feedback1", "type": "feedbackTOP", "comment": "Holds the previous frame" },
    {
      "name": "comp1",
      "type": "compositeTOP",
      "comment": "Combines the seed with the fed-back frame (default Over)"
    },
    {
      "name": "transform1",
      "type": "transformTOP",
      "parameters": { "sx": 1.03, "sy": 1.03, "rotate": 1.5 },
      "comment": "Zoom + rotate each frame to create the tunnel motion"
    },
    { "name": "blur1", "type": "blurTOP", "parameters": { "size": 2 } },
    {
      "name": "level1",
      "type": "levelTOP",
      "parameters": { "brightness1": 0.96 },
      "comment": "Decay / feedback gain"
    },
    { "name": "out1", "type": "nullTOP", "comment": "Output of the system" }
  ],
  "connections": [
    { "from": "noise1", "to": "feedback1" },
    { "from": "noise1", "to": "comp1", "to_input": 0 },
    { "from": "feedback1", "to": "comp1", "to_input": 1 },
    { "from": "comp1", "to": "transform1" },
    { "from": "transform1", "to": "blur1" },
    { "from": "blur1", "to": "level1" },
    { "from": "level1", "to": "out1" }
  ],
  "parameters": [
    {
      "name": "feedback_target",
      "node": "feedback1",
      "param": "top",
      "value": "level1",
      "description": "feedbackTOP samples the loop output (level1). Value resolves to the created node path."
    },
    {
      "name": "feedback_gain",
      "node": "level1",
      "param": "brightness1",
      "value": 0.96,
      "min": 0,
      "max": 1,
      "label": "Feedback Gain"
    },
    {
      "name": "zoom",
      "node": "transform1",
      "param": "sx",
      "value": 1.03,
      "min": 1,
      "max": 1.2,
      "label": "Tunnel Zoom"
    }
  ],
  "preview_description": "An endless rotating tunnel of evolving colored noise that folds into its own center."
}