CHAPTER 4 HP-GL/2 - 2
C
ONTENTS
1.
COMMAND LIST .................................................................................................................. 4
2.
INTRODUCTION .................................................................................................................. 6
3.
TERMINOLOGY ................................................................................................................... 7
3.1.
Picture Frame........................................................................................................................... 7
3.2.
Anchor Point ............................................................................................................................ 7
3.3.
Graphics Window ..................................................................................................................... 7
3.4.
Hard Clip Limits ........................................................................................................................ 7
3.5.
Soft Clip Limits ......................................................................................................................... 7
3.6.
Graphics Units ......................................................................................................................... 7
3.7.
User Units ................................................................................................................................ 7
3.8.
Current Units ............................................................................................................................ 7
3.9.
Pens ......................................................................................................................................... 7
3.10.
Absolute and Relative Plotting ................................................................................................. 8
3.11.
Fills ........................................................................................................................................... 8
4.
COMMAND SYNTAX ........................................................................................................... 9
4.1.
Mnemonic................................................................................................................................. 9
4.2.
Parameters............................................................................................................................... 9
4.3.
Separators ............................................................................................................................... 9
4.4.
Terminator ................................................................................................................................ 9
5.
THE HP-GL GRAPHICS WINDOW .................................................................................... 10
5.1.
Units ....................................................................................................................................... 10
5.2.
The Scaling Points P1 and P2 ............................................................................................... 10
5.3.
Scaling ................................................................................................................................... 10
5.4.
Transformation ....................................................................................................................... 10
6.
PREPARING TO PRINT GRAPHIC IMAGES .................................................................... 11
6.1.
Setting Up the Graphics Window ........................................................................................... 11
6.2.
Using Existing Image Plots .................................................................................................... 11
6.3.
Printing an Image ................................................................................................................... 11
6.4.
Entering HP-GL/2 Mode ......................................................................................................... 11
6.5.
Quitting HP-GL/2 Mode .......................................................................................................... 11
7.
COMMANDS ...................................................................................................................... 12
7.1.
Initialize Commands ............................................................................................................... 12
7.2.
Plot Area and Unit Setting Instructions .................................................................................. 14
7.3.
Pen Control and Plot Instructions .......................................................................................... 18
7.4.
The polygon group ................................................................................................................. 25