CHORD ANGLE EFFECTS ON CIRCLE SMOOTHNESS
When plotting circles you have two parameters that you
can set. The first is the radius of the circle, the
second is the chord angle. The chord angle default if 5
degrees, and the smaller the number the smoother the
curve. This example shows the differences in appearance
between chord angles on circles. For more information
see the PCL 5 Printer Language Technical Reference
Manual.
LEGEND: Ec = [Ctrl] [P] [Esc] in DOS EDIT
EcE Resets the printer.
Ec%0B Enters HP-GL/2 mode.
IN; Initializes HP-GL/2 mode.
SP1; Selects pen number 1
(black). Even though
there is no physical pen,
the SP command must be
used to enable printing.
SC-3000,3000,-2000,2000,1; Specifies a scaling mode,
making P1 equal to (-
3000,-2000) user units
and P2 equal to
(3000,2000) user units.
With isotropic scaling
specified.
PA-1700,2000;CI750,45; Specifies absolute
plotting and moves to (-
1700,2000), the center of
the circle, to be drawn.
Draws a circle with a
radius of 750 user-units
and a chord angle of 45
degrees.
PA300,2000;CI750,30; Specifies absolute
plotting and moves to
(300,2000) to draw
another circle. This
circle is drawn with a
radius of 750 user-units,
and a chord angle of 30
degrees.
PA-1700,-200;CI750,15; Specifies absolute
plotting and moves to (-
1700,-200) the center
point of a third circle.
This circle is drawn with
a radius of 750 user-
units, and a chord angle
of 15 degrees.
PA300,-200;ci750; Specifies absolute
plotting and moves to
(300,-200), the center of
the fourth circle. Draws
this circle with a radius
of 750 user-units and the
default chord angle of 5
degrees.
Ec%0A Enters PCL mode.
EcE Sends a reset to end the
job and eject the 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.
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