ADAPTING THE HP-GL/2 COORDINATE SYSTEM TO MATCH THE PCL
SYSTEM IN PORTRAIT ORIENTATION
This example will draw a few lines in both PCL and HP-
GL/2 modes to demonstrate that the coordinate systems
are lined up correctly (the end points of the lines
intersect).
LEGEND: Ec = [Ctrl] [P] Esc] in DOS EDIT
EcE Resets the printer.
Ec&l2A Sets the page size to
letter.
Ec&l0O Specifies portrait
orientation.
Ec&l0E Sets top margin to 0
Ec*p0x0Y Moves to position (0,0).
Ec*c5760x7920Y Sets picture frame to 8"
x 11" (size of the
logical page).
Ec*c0T Sets picture frame anchor
point to current PCL
cursor position (0,0).
Ec%1B Enters HP-GL/2 mode with
the HP-GL/2 pen at the
PCL cursor position.
IN;SP1; Initializes HP-GL/2
command values and
selects pen number 1
(black). The IN command
moves the pen position
from the anchor point to
the HP-GL/2 origin, the
lower-left corner of the
PCL picture frame.
SC0,3.3867,0,-3.3867,2; Sets-up a user scale with
a user-unit equal to
1/300 inch. Scale command
type 2, the scale is the
ratio of plotter
units/user-units (1016
plotter units-per-
inch/300 dots-per-inch =
3.3867). The minus 2 Y-
value changes the HP-GL/2
Y direction to match that
of the PCL coordinate
system.
IR0,100,0,100; Places P1 (point 0,0) at
the top of the PCL
picture frame.
PU0,0; Lifts the pen and moves
to (0,0) (Upper left
corner since HP-GL/2
coordinate system now
matches PCL coordinate
system). Every subsequent
pen move can be specified
using the same coordinate
numbers in either mode.
The following commands
demonstrate that the
grids are synchronized.
PU300,300;PD600,600; Lifts the pen and moves
it to (300,300); then
draws a line to
(600,600). This draws a
line at a 45 angle down
from the starting point.
Ec%1A Enters the PCL mode with
HP-GL/2's pen position
being inherited as PCL's
current active position,
(CAP=(600,600)).
Ec*c300a4b0P Draws a horizontal line
(rule) that is 30 PCL
units wide by 4 PCL
units. (Note that the
cursor position after a
rule is printed is at the
beginning of the rule, in
this case, (600,600)).
Ec%1BPU;PR300,0;PD;PR0,500; Enters HP-GL/2 mode
(inheriting PCL's CAP)
and lift the pen; moves
to a point 300 user-units
(dots) to the right;
places the pen down and
prints a line 500 user-
units down.
Ec%1A Enters the PCL mode with
the CAP at the current HP-
GL/2 pen position.
EcE Resets the printer to end
the job and eject a page.
Copyright Hewlett-Packard Co. 1993
The information contained herein is subject to change
without notice.
Hewlett-Packard shall not be liable for incidental or
consequential damages in connection with the use of this
material.