{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "format",
    "version",
    "brush",
    "size"
  ],
  "properties": {
    "format": {
      "const": "flipline-brush"
    },
    "version": {
      "const": 1
    },
    "brush": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "kind",
        "opacity",
        "flow",
        "spacing",
        "texture",
        "pressure",
        "seed"
      ],
      "properties": {
        "kind": {
          "enum": [
            "ink",
            "pencil",
            "marker",
            "wash",
            "airbrush"
          ]
        },
        "opacity": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "flow": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "spacing": {
          "type": "number",
          "minimum": 0.08,
          "maximum": 1
        },
        "texture": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "pressure": {
          "type": "boolean"
        },
        "seed": {
          "type": "integer",
          "minimum": 0,
          "maximum": 4294967295
        }
      }
    },
    "size": {
      "type": "number",
      "minimum": 1,
      "maximum": 100
    }
  }
}