2011
Table Of Contents
- Contents
- Basic Customization
- Overview of Customization
- Organize Program and Support Files
- Customize a Publish to Web Template
- Define Custom Commands
- Record and Modify Action Macros
- Custom Linetypes
- Custom Hatch Patterns
- User Interface Customization
- Understand User Interface Customization
- Work with the Customize User Interface (CUI) Editor
- Create and Manage Customization Files
- Customize Commands
- Overview of Commands
- Create, Edit, and Reuse Commands
- Create Macros
- Overview of Macros
- Use Special Control Characters in Macros
- Pause for User Input in Macros
- Provide International Support in Macros
- Use Built-in Commands in Macros
- Repeat Commands in Macros
- Use Single Object Selection Mode in Macros
- Use Macros to Swap User Interface Elements
- Use Conditional Expressions in Macros
- Use AutoLISP in Macros
- Control the Display of Command Items
- Assign Search Tags
- Create Tooltips and Extended Help for Commands
- Create Status Line Help Messages
- Assign, Create, and Manage Images for Commands
- Customize User Interface Elements
- Load an AutoLISP File
- Customize Workspaces
- Transfer and Migrate Customization
- Customize User Interface (CUI) Editor FAQs
- DIESEL
- Slides and Command Scripts
- Introduction to Programming Interfaces
- Shapes and Shape Fonts
- Overview of Shape Files
- Create Shape Definition Files
- Shape Descriptions
- Vector Length and Direction Code
- Special Codes
- Use Special Codes
- Codes 0, 1, and 2: End of Shape and Draw Mode Control
- Codes 3 and 4: Size Control
- Codes 5 and 6: Location Save/Restore
- Code 7: Subshape
- Codes 8 and 9: X-Y Displacements
- Code 00A: Octant Arc
- Code 00B: Fractional Arc
- Codes 00C and 00D: Bulge-Specified Arcs
- Code 00E: Flag Vertical Text Command
- Text Font Descriptions
- Sample Files
- Big Font Descriptions
- Unicode Font Descriptions
- Superscripts and Subscripts in SHX Files
- Index
Text fonts (files containing shape definitions for each character) require specific
numbers corresponding to the value of each character in the ASCII code; other
shapes can be assigned any numbers.
defbytes The number of data bytes (specbytes) required to describe the shape,
including the terminating 0. The limit is 2,000 bytes per shape.
shapename The shape name. Shape names must be uppercase to be
recognized. Names with lowercase characters are ignored and are usually used
to label font shape definitions.
specbyte A shape specification byte. Each specification byte is a code that
defines either a vector length and direction or one of a number of special
codes. A specification byte can be expressed in the shape definition file as
either a decimal or hexadecimal value. This section uses both decimal and
hexadecimal specification byte values for its examples (as do many of the
shape definition files). If the first character of a specification byte is a 0 (zero),
the two characters that follow are interpreted as hexadecimal values.
Quick Reference
Commands
LOAD
Makes shapes available for use by the SHAPE command.
SHAPE
Inserts a shape from a shape file that has been loaded using LOAD.
Vector Length and Direction Code
A simple shape specification byte contains vector length and direction encoded
into one specification byte.
A simple shape specification byte contains vector length and direction encoded
into one specification byte (one specbyte field). Each vector length and
direction code is a string of three characters. The first character must be a 0,
which indicates to AutoCAD that the next two characters are interpreted as
hexadecimal values. The second character specifies the length of the vector
in units. Valid hexadecimal values range from 1 (one unit long) through F (15
units long). The third character specifies the direction of the vector. The
following figure illustrates the direction codes.
456 | Chapter 8 Shapes and Shape Fonts