Trong trao đổi cho quảng cáo biểu ngữ, người ta có thể đặt truyện tranh của họ trên các máy chủ của họ và tận dụng lợi thế của các chức năng tự động của họ và mã rằng Trong hộp thoại Từ điển, bạn cũng có thể thêm hoặc xóa từ từ một từ điển. | taking control of the AUTOCAD display 213 Understanding Regeneration and Redrawing AutoCAD uses two commands for refreshing your drawing display Regen drawing regeneration and Redraw. Each command serves a particular purpose although it may not be clear to a new user. To better understand the difference between Regen and Redraw it helps to know that AutoCAD stores drawing data in two ways In a database of highly accurate coordinate information that is part of the properties of objects in your drawing In a simplified database used just for the display of the objects in your drawing As you draw AutoCAD starts to build an accurate core database of objects and their properties. At the same time it creates a simpler database that it uses just to display the drawing quickly. AutoCAD uses this second database to allow quick manipulation of the display of your drawing. For the purposes of this discussion I ll call this simplified database the virtual display because it s like a computer model of the overall display of your drawing. This virtual display is in turn used as the basis for what is shown in the drawing area. When you issue a Redraw command you re telling AutoCAD to reread this virtual display data and display that information in the drawing area. A Regen command on the other hand tells AutoCAD to rebuild the virtual display based on information from the core drawing database. You may notice that the Pan Realtime and Zoom Realtime commands don t work beyond a certain area in the display. When you reach a point where these commands seem to stop working you ve come to the limits of the virtual display data. To go beyond these limits AutoCAD must rebuild the virtual display data from the core data in other words it must regenerate the drawing. You can usually do this by zooming out to the extents of the drawing. Sometimes when you zoom in to a drawing arcs and circles may appear to be faceted instead of smooth curves. This faceting is the result of AutoCAD s virtual
