Special elements of the AutoCAD interface.
Grips
The Grips are small squares that appear at defining points of the selected objects (Fig.3.18). The objects you must select without first calling editing commands.
Unlike edit objects using the Properties palette (Ргорегtiеs), with grips you can modify only the geometric properties of objects. Handles can be used to quickly perform the most common editing operations like cropping, reproduction, translation, rotation, scaling and mirrored objects.
We must distinguish: in unselected grips (the grips that appear when you select objects); the grips under the cursor — grips, which is under the imposed on it the cursor; the selected grips — grips that were selected by clicking the left mouse button. Each of these states grips has its own color, configurable in the setup window (Options).
To provide the ability to edit objects using grips, you need to enable this mode. By default it is already enabled, however, if the need arose, from the tools menu (Tools) select settings (Options). In the opened dialog box go to the Selection tab and in the area of the Grips to set the check box to Include a grips.
Grips appear on all selected objects, regardless of how (one or group), they were chosen. In blocks grips appears only at the point of insertion. However, if the above tab, Select the install check box for Grips within blocks, they will appear on all the objects contained within the block.
To perform an editing operation using grips, you need to choose one of them. To do this, click with the left mouse button inside the Grips. After that the grips becomes selected, or a base, and it will be the base point of the edit. The color of the selected Grips will change. If you need to select multiple Grips, you should hold down the Shift key, click the left mouse button first, and then all the other Grips.
Fig. 3.18 Display the grips on the rectangle and circle
Context menu
This is a very convenient element of the interface. The main advantage of using the context menu is that it is always at hand. This is truly a universal way to access many of the commands and their parameters.
When you call the context menu in the graphics area of the screen when not handled any team, the first item in it is the repetition of the previous command.
The set of commands of the context menu depends on many parameters.
First, from the challenge zone. It can be a graphic area of the screen area occupied by the icons, command line, or special area of a screen that displays the Properties palette (Properties) window or the control Center (ADC). A set of context menu commands in all zones except zone graphic, different, but constant, it does not change during execution of certain operations.
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The command set of the graphics area is constantly changing and depends on the processed commands in the process which invoked the context menu. In addition, when calling the context menu in the graphics area, press and hold the Shift key, and AutoCAD will display the command set object snaps.
Call any context menu by right-clicking the mouse in the appropriate area of the screen.
The input parameters (options) commands using the context menu.
When performing any operation creating or editing objects shortcut menu can be accessed only in the case if in the command line after the command name in square brackets presents the set of available options or when the dynamic input field in dynamic tooltips displayed a small arrow pointing down.
The display of coordinate values
At the bottom of the screen is the status bar. In its left corner is displayed the current coordinates. They change as you move the crosshair with the mouse within the working area. AutoCAD allows you to use a three coordinate display format.
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In AutoCAD it is possible to set the polar (POLAR) and orthogonal (ORTHO) modes, in which the system forcibly draws construction lines at various user-defined angles. The orthogonal mode is a special case of the polar one; when it is installed, the lines are directed along the coordinate axes at an angle of 0, 90, 180, or 270°. Setting this mode also affects the editing of the drawing, since objects can only be moved parallel to the coordinate axes (vertically or horizontally). Polar and orthogonal modes cannot be set at the same time. Orthogonal mode only affects the points that are indicated by the mouse on the screen. If the coordinates of the point are entered from the keyboard, they get a higher priority.
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