Function invoke

src/WebGL/webglInputEvents.js:133–141

(callbacksChain, args)

  }

  function invoke(callbacksChain, args) {
    var i, stopPropagation;
    for (i = 0; i < callbacksChain.length; i += 1) {
      stopPropagation = callbacksChain[i].apply(undefined, args);
      if (stopPropagation) {
        return true;
      }
    }
  }

  function startListen(root) {
    var pos = {