Display control of AutoCAD Graphics 01

For a more complex graphic, when you look at an entire graphic, you can't view and manipulate its local details, and when you display a detail on the screen and you don't see other parts, AutoCAD provides zoom (zoom), pan (PAN), view (view), A series of graphical display control commands, such as Aerial view and Viewports (viewport) commands, can be used to zoom in, zoom out, or move the graphic display on the screen at any time, or to display graphics from different angles and different parts. AutoCAD also provides redraw (repaint) and Regen (rebuild) commands to refresh the screen and regenerate the graphics.

Note that the actions mentioned here, such as zooming, narrowing, or moving, simply control the display of the graphic on the screen, and the graph itself does not change.

3.3.1 Instance 3 View graphics

Step 1 Opens the graphics file "Db_samp." DWG "

(1) Run AutoCAD 2002 system, open AutoCAD provided sample file "Db_samp." DWG, which is saved in the "Sample" subfolder of the AutoCAD home folder, as the result is shown in Figure 3-21.

Step 2 View graphics using the zoom and pan commands

(1) The plan is a floor plan of a building. To view the details of the diagram, first use the Zoom realtime (real-time scaling) to control. Select the icon button on the Standard toolbar, when the cursor changes to a shape. If the user hold down the left mouse button to move vertically, then as the mouse moved away from the increase in the graphics will automatically enlarge; Conversely, if the user hold down the left mouse button vertically downward movement, as the mouse moved away from the increase in the distance, graphics will continue to shrink automatically. Now enlarge the graphic so that you can see the room number on the screen, as shown in Figure 3-22.

(2) To view other parts of the graphic under the same display scale, you can use the Pan (PAN) tool. Press ENTER or ESC to terminate the Live Zoom command first. Then select the Icon button on the Standard toolbar, where the cursor changes to a shape, and then you can hold down the left mouse button and drag in any direction on the screen, and the graphics on the screen move along, allowing you to use the user to view any part of the graphic. As shown in Figure 3-23.

(3) below, use the "Zoom" command to display the entire graphic again. Press ENTER or ESC to terminate the translation command, and then enter at the command line: