b.vl

Scene {
  Param {
    text: "rbig"
    min: 1
    max: 20
    id: rbigParam
  }

  property var rbig: rbigParam.value
  property var step: 15
  property var zmax: 30

  Spheres {
    color: [1,1,0]
    radius: 0.35
    positions: f()
    
    function f() {
      var arr = [];
      console.log(111);
      for (var i=0; i<360; i+=step) {
        var x = rbig*Math.cos( i/57.7 );
        var y = rbig*Math.sin( i/57.7 );
        var z = i*zmax/360;
        arr.push(x);
        arr.push(y);
        arr.push(z);
      }
      console.log(arr);
      return arr;
    }
    
  }
}