设备坐标和逻辑坐标（窗口、视口）

摘转一些关于设备坐标和逻辑坐标的文章以备日后查阅

 

http://hi.baidu.com/shi51314/blog/item/720a920ae2a33739b0351d6a.html

 

http://blog.csdn.net/pathuang68/archive/2009/05/27/4219657.aspx

 

http://blog.163.com/lgy-047/blog/static/61346565200910921340351/

 

http://www.yesky.com/20010509/173467.shtml

 

http://dev.yesky.com/121/2018121.shtml