anchor.diff:  import 'package:chronosgl/chronosgl.dart';
   import 'package:chronosgl/chronosutil.dart';
   import 'dart:html' as HTML;
  +import 'dart:web_gl' as WEBGL;
   import 'dart:async';
   import 'dart:typed_data';
   
  
positive.code:       PoseSkeleton(skeleton, globalOffsetTransform, anim, posedSkeleton, 0.0);
        mdWire = LineEndPointsToMeshData("wire", chronosGL.gl,
            BonePosFromPosedSkeleton(skeleton, posedSkeleton));
        Node mesh = new Node(mdWire.name, mdWire, matWire)
          ..rotX(3.14 / 4);
        Node n = new Node.Container("wrapper", mesh);
        n.lookAt(new VM.Vector3(100.0, 0.0, 0.0));
        prgWire.add(n);
  
negative.code:       new StatsFps(HTML.document.getElementById("stats"), "blue", "gray");
    HTML.CanvasElement canvas = HTML.document.querySelector('#webgl-canvas');
    ChronosGL chronosGL = new ChronosGL(canvas);
    chronosGL.gl.enable(WEBGL.CULL_FACE);
    //UseElementIndexUint(chronosGL.gl);
    OrbitCamera orbit = new OrbitCamera(300.0);
    Perspective perspective = new Perspective(orbit);
  