可以直接浏览igs文档，打开即可观看，可以直接打开igs文档-igs can directly browse files can be opened to watch, and can directly open files igs

该源码能够对2D图形进行放大、缩小、旋转、还原等功能，并能够读取浏览图片。希望能够对大家有所帮助，谢谢！-The source of 2D graphics can zoom, rotation, reduction and other functions, and can read the browse pictures. I hope you can help, thank you!