README.md

config.json format

{
  "window": {
    "x": 1, 
    "y": 1, 
    "width": 1, 
    "height": 1
  
  },
  "targets": [
    {
      "type": "linear",
      "actor": "arcball"
    },
    {
      "type": "helper",
      "actor": "arcball-reset"
    }
  ]
}