2011
Table Of Contents
- Contents
- Get Information
- The User Interface
- Start and Save Drawings
- Control the Drawing Views
- Organize Drawings and Layouts
- Create and Modify Objects
- Control the Properties of Objects
- Use Precision Tools
- Use Coordinates and Coordinate Systems (UCS)
- Use Dynamic Input
- Snap to Locations on Objects (Object Snaps)
- Restrict Cursor Movement
- Combine or Offset Points and Coordinates
- Specify Distances
- Extract Geometric Information from Objects
- Use a Calculator
- Draw Geometric Objects
- Change Existing Objects
- Select Objects
- Correct Mistakes
- Erase Objects
- Cut, Copy, and Paste with the Clipboard
- Modify Objects
- Modify Complex Objects
- Add Constraints to Geometry
- Define and Reference Blocks
- Work with 3D Models
- Create 3D Models
- Overview of 3D Modeling
- Create Solids and Surfaces from Lines and Curves
- Create Solids
- Create Surfaces
- Create Meshes
- Create Wireframe Models
- Add 3D Thickness to Objects
- Modify 3D Models
- Create Sections and 2D Drawings from 3D Models
- Create 3D Models
- Annotate Drawings
- Work with Annotations
- Hatches, Fills, and Wipeouts
- Notes and Labels
- Tables
- Dimensions and Tolerances
- Understand Basic Concepts of Dimensioning
- Use Dimension Styles
- Set the Scale for Dimensions
- Create Dimensions
- Modify Existing Dimensions
- Add Geometric Tolerances
- Plot and Publish Drawings
- Specify Settings for Plotting
- Save Plot Settings as Named Page Setups
- Reuse Named Page Setups
- Specify Page Setup Settings
- Select a Printer or Plotter for a Layout
- Select a Paper Size for a Layout
- Determine the Drawing Orientation of a Layout
- Set the Plot Area of a Layout
- Adjust the Plot Offset of a Layout
- Set the Plot Scale for a Layout
- Set the Lineweight Scale for a Layout
- Select a Plot Style Table for a Layout
- Set Shaded Viewport and Plot Options for a Layout
- Print or Plot Drawings
- Overview of Plotting
- Use a Page Setup to Specify Plot Settings
- Select a Printer or Plotter
- Specify the Area to Plot
- Set Paper Size
- Position the Drawing on the Paper
- Control How Objects Are Plotted
- Preview a Plot
- Plot Files to Other Formats
- Specify Settings for Plotting
- Share Data Between Files
- Reference Other Drawing Files
- Work with Data in Other Formats
- Collaborate with Others
- Render Drawings
- Draw 2D Isometric Views
- Add Lighting to Your Model
- Materials and Textures
- Render 3D Objects for Realism
- Glossary
- Index
Quick Reference
UNITS
Controls coordinate and angle display formats and precision.
Understand the User Coordinate System (UCS)
You can relocate and rotate the user coordinate system for convenient
coordinate entry, grid display, grid snap, Ortho mode, and other drawing
tools.
Understand the World and User Coordinate Systems
There are two coordinate systems: a fixed system called the world coordinate
system (WCS) and a movable system called the user coordinate system (UCS).
By default, these two systems are coincident in a new drawing.
Normally in 2D views, the WCS X axis is horizontal and the Y axis is vertical.
The WCS origin is where the X and Y axes intersect (0,0). All objects in a drawing
file are defined by their WCS coordinates. However, it is usually more
convenient to create and edit objects based on the movable UCS.
Work with the User Coordinate System
Virtually all coordinate entry as well as many other tools and operations
reference the current UCS. 2D tools and operations that depend on the location
and orientation of the UCS include the following:
■ Absolute and relative coordinate entry
■ Absolute reference angles
■ Definition of horizontal and vertical for Ortho mode, polar tracking, object
snap tracking, grid display, and grid snap
■ Orientation of horizontal and vertical dimensions
■ Orientation of text objects
■ View rotation using the PLAN command
Moving or rotating the UCS can make it easier to work on particular areas of
a drawing.
210 | Chapter 16 Use Precision Tools