Coordinate System 坐标系

Every object you draw is placed in either the World Coordinate System 世界坐标系 (WCS) or a User Coordinate System 用户坐标系 (UCS)

Data input is ultimately passed to the software in the form of Cartesian (x,y) or polar coordinates (distance, angle)

Cartesian Coordinate System

Determine points in space that are a specified distance from a set of perpendicular axes that intersect at the origin of the system

Polar Coordinates

A point in the coordinate system that is determined by a distance and an angle

Polar Angle

The default polar angle is measured counterclockwise from the zero angle position

The default zero angle is in the East compass direction

Absolute and Relative Coordinates

Absolute Coordinates: A point being from the origin point (0,0)

Relative Coordinates: A point being from any point other than origin point

Tool Palettes 工具窗口

The tool palettes are a set of overlapping panels

The palettes provide an efficient method for organizing, sharing, and placing area for tools that use regularly

Palettes can also contain custom tools provided by 3rd party developers

Status Bar

Coordinates Display

Display the x, y, z values or the distance and polar angle of the crosshairs position

Drafting Settings

Buttons that activate features to facilitate drawing construction

Model Space and Layout Settings

Display the drawing model or the drawing layout views

Annotation Settings

Annotation options for the display of annotative objects such as text and dimensions

Video demo

Panel

Toolbars are organized in panels within the ribbon tabs

Right-click in the ribbon and select Panels to turn On and Off

Panel Tools

Select the black arrow, panel will cascade to reveal additional tools

Select the thumbtack to keep these panels open to display all of the tools

Menu Browser

Use the Menu Browser to access all commands

Add or Remove Tabs

Right-click in the ribbon and select Tabs

Ribbon

The ribbon is a special tool palette associated with each workspace

The ribbon supports the heads-up design

Ribbon provides with more space in the drawing area and enables you to maintain access to the tools and controls you need

The ribbon is organized into a series of tabs 

         1. Tab          2. Panel          3. More tools

Each tab includes a different set of panels with related commands and controls

Some panels can be expanded to display more tools

Video demo

Special Keys

[Esc] - Cancel all actions

1st [Enter] - Confirm   2nd [Enter] - Terminate

[Spacebar] = [Enter ]

Press [Spacebar] or [Enter] when Command Line is empty - Repeats last command

[TAB] - Move from field to field

Workspace Switching

   

Located in the lower right corner on the Status Bar

3D Modeling

AutoCAD Classic

Common with ACAD 2002, ACAD 2004, ACAD 2005, ACAD 2006, ACAD 2007, ACAD 2008

2D Drafting & Annotation

Default Interface

1. Menu Browser 6. Drawing Area

2. Quick Access Toolbar 7. Crosshairs

3. Info Canter 8. Command Window

4. Title Bar 9. Status bar

5. Ribbon