{
  "params": {
    "size": {
      "type": "range",
      "min": 0.4,
      "max": 1.4,
      "step": 0.05,
      "default": 0.8,
      "label": "Size",
      "describe": "Diameter in metres. 0.4 is a small clump, 1.4 a big old one taller than a fence rail."
    },
    "density": {
      "type": "range",
      "min": 0.3,
      "max": 1,
      "step": 0.05,
      "default": 0.65,
      "label": "Density",
      "describe": "How many twigs: 0.3 is airy and see-through, 1 is a thick tangled ball."
    },
    "colour": {
      "type": "choice",
      "options": [
        "dry",
        "bleached",
        "rusty"
      ],
      "default": "dry",
      "label": "Colour",
      "describe": "dry (straw tan), bleached (sun-whitened grey), rusty (reddish autumn thistle)."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 60,
      "step": 1,
      "default": 9,
      "label": "Seed",
      "describe": "Reshapes every twig. Same seed always builds the same tumbleweed."
    }
  },
  "presets": {
    "desert drifter": {
      "size": 0.7,
      "colour": "dry",
      "density": 0.55
    },
    "giant tumbleweed": {
      "size": 1.4,
      "density": 0.9,
      "seed": 23
    },
    "bleached bones": {
      "colour": "bleached",
      "density": 0.4,
      "seed": 31
    }
  },
  "night": null
}