This method returns the zoom level of the CytoscapeWindow. A value of 1.0 typically renders the graph with an ample margin. A call to fitContent produces a zoom level of about 1.5.
此方法返回的CytoscapeWindow的缩放级别。典型值为1.0渲染图与充足的保证金。一个呼叫fitContent产生约1.5缩放级别。
用法----------Usage----------
getZoom(obj)
参数----------Arguments----------
参数:obj
a CytoscapeWindowClass object.
CytoscapeWindowClass对象。