Build and bump

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "svg-pan-zoom",
-  "version": "3.2.11",
+  "version": "3.3.0",
   "homepage": "https://github.com/ariutta/svg-pan-zoom",
   "authors": [
     "Andrea Leofreddi <a.leofreddi@itcharm.com>",

dist/svg-pan-zoom.js

@@ -1,4 +1,4 @@
-// svg-pan-zoom v3.2.11
+// svg-pan-zoom v3.3.0
 // https://github.com/ariutta/svg-pan-zoom
 (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
 var svgPanZoom = require('./svg-pan-zoom.js');
@@ -215,29 +215,20 @@ ShadowViewport.prototype.cacheViewBox = function() {
 
     this.options.svg.removeAttribute('viewBox')
   } else {
-    var bBox = this.viewport.getBBox();
-
-    // Cache viewbox sizes
-    this.viewBox.x = bBox.x;
-    this.viewBox.y = bBox.y;
-    this.viewBox.width = bBox.width
-    this.viewBox.height = bBox.height
+    this.simpleViewBoxCache()
   }
 }
 
 /**
  * Recalculate viewport sizes and update viewBox cache
  */
-ShadowViewport.prototype.recacheViewBox = function() {
-  var boundingClientRect = this.viewport.getBoundingClientRect()
-    , viewBoxWidth = boundingClientRect.width / this.getZoom()
-    , viewBoxHeight = boundingClientRect.height / this.getZoom()
-
-  // Cache viewbox
-  this.viewBox.x = 0
-  this.viewBox.y = 0
-  this.viewBox.width = viewBoxWidth
-  this.viewBox.height = viewBoxHeight
+ShadowViewport.prototype.simpleViewBoxCache = function() {
+  var bBox = this.viewport.getBBox()
+
+  this.viewBox.x = bBox.x
+  this.viewBox.y = bBox.y
+  this.viewBox.width = bBox.width
+  this.viewBox.height = bBox.height
 }
 
 /**
@@ -1009,7 +1000,7 @@ SvgPanZoom.prototype.center = function() {
  * Use when viewport contents change
  */
 SvgPanZoom.prototype.updateBBox = function() {
-  this.viewport.recacheViewBox()
+  this.viewport.simpleViewBoxCache()
 }
 
 /**