更新时间：2021-06-24 16:28:13
封面
Title Page
Copyright and Credits
Practical Autodesk AutoCAD 2021 and AutoCAD LT 2021
About Packt
Why subscribe?
Contributors
About the authors
About the reviewer
Packt is searching for authors like you
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the color images
Conventions used
Get in touch
Reviews
An Introduction to AutoCAD
AutoCAD LT and AutoCAD for Macintosh
Understanding the user interface
The application button
The quick access toolbar
The info bar
The ribbon area
The file tabs
The ViewCube and navigation bar
The selection cursor
The command line/palette
The user coordinate system
The layout tabs
The status bar toggles
Navigating in AutoCAD
Selecting and panning
Zooming in and out
Making selections
A simple selection
The selection window
The crossing window
The "window lasso" selection
The "crossing lasso" selection
Setting units and limits
Setting units
Setting limits
Saving settings as a template
Saving a drawing file as DWG
Summary
Basic Drawing Tools
Understanding the coordinate system
Cartesian coordinates
Polar coordinates
Using the Line command
Making lines with direct distance entry
Making lines using absolute coordinates
Using polar coordinates
Using relative coordinates
Making a drawing without coordinate values
The status bar modes
Using Dynamic Input
Using ortho mode
Using polar tracking
Making a circle
Center radius and diameter
2-Point and 3-Point
Tan Tan Radius and Tan Tan Tan
Making an arc
Start Center End
Start End Radius
Center Start End
Making a rectangle
Making a rectangle using absolute coordinates
Making a rectangle using relative coordinates
Making a rectangle with Dynamic Input
Making a polygon
Inscribed and circumscribed polygons
Making polygons
The Move and Copy commands
The Rotate command
Simple Rotate
Rotate with Reference
The Fillet command
The Trim command
The Extend command
Learning about Modify Commands
Using Object Snaps
The Endpoint and Midpoint snaps
The Center snap
The Geometric Center snap
The Node snap
The Quadrant snap
The Intersection snap
The Extension snap
The Perpendicular snap
The Tangent snap
The Nearest snap
The Parallel snap
The Object Snap override
Object Snap tracking
Making an ellipse
