1  function printscreenScene() {
 2         var image = new Image();//创建img对象
 3         viewer.render();//重新渲染界面
 4         image = viewer.scene.canvas.toDataURL("image/png");
 5         $("#printscreenScene_save").find("img").attr("src", image);//添加img标签元素
 6         $("#printscreenScene_save img").show().addClass("show");
 7         saveFile(image, 111);//调用打印图件函数
 8     }
 9 
10     //打印图件
11     var saveFile = function (data, filename) {
12         var save_link = document.createElementNS(‘http://www.w3.org/1999/xhtml‘, ‘a‘);
13         save_link.href = data;
14         save_link.download = filename;
15 
16         var event = document.createEvent(‘MouseEvents‘);
17         event.initMouseEvent(‘click‘, true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
18         save_link.dispatchEvent(event);
19     };