2012
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
- Work with the User Coordinate System (UCS)
- Enter Coordinates to Specify Points
- 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
- Create Objects
- Select and Modify Objects
- Select Objects
- Correct Mistakes
- Erase Objects
- Cut, Copy, and Paste with the Clipboard
- Modify 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 Drawings from 3D Models
- Create 3D Models
- Annotate Drawings
- Work with Annotations
- Overview of Annotations
- Scale Annotations
- Overview of Scaling Annotations
- Set Annotation Scale
- Create Annotative Objects
- Display Annotative Objects
- Add and Modify Scale Representations
- Set Orientation for 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
- Work with Annotations
- 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
- Publish Drawings
- 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
When you use the pointing device to locate a point, it's normally placed on
the XY plane. If the UCS is rotated so that the Z axis lies in a plane parallel to
the viewing plane—that is, if the XY plane is edge-on to the viewer—it may
be difficult to visualize where the point will be located. In this case, the point
will be located on a plane parallel to your viewing plane that also contains
the UCS origin point. For example, if the viewing direction is along the X axis,
coordinates specified with a pointing device will be located on the YZ plane,
which contains the UCS origin point.
Use the 3D UCS icon to help you visualize which plane these coordinates will
be projected on; the 3D UCS icon does not use a broken pencil icon.
Enter Coordinates to Specify Points
When a command prompts you for a point, you can use the pointing device
to specify a point, or you can enter a coordinate value at the command prompt.
Overview of Coordinate Entry
You can enter two-dimensional coordinates as either Cartesian (X,Y) or polar
coordinates. When dynamic input is on, you can enter coordinate values in
tooltips near the cursor.
Cartesian and Polar Coordinates
A Cartesian coordinate system has three axes, X, Y, and Z. When you enter
coordinate values, you indicate a point's distance (in units) and its direction
(+ or -) along the X, Y, and Z axes relative to the coordinate system origin
(0,0,0).
In 2D, you specify points on the XY plane, also called the work plane. The
work plane is similar to a flat sheet of grid paper. The X value of a Cartesian
coordinate specifies horizontal distance, and the Y value specifies vertical
distance. The origin point (0,0) indicates where the two axes intersect.
Polar coordinates use a distance and an angle to locate a point. With both
Cartesian and polar coordinates, you can enter absolute coordinates based on
the origin (0,0), or relative coordinates based on the last point specified.
Another method of entering a relative coordinate is by moving the cursor to
specify a direction and then entering a distance directly. This method is called
direct distance entry.
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