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Language Pcl LJ1885

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.
     
     


file: /Techref/language/pcl/lj1885.asc, 3KB, , updated: 1993/11/15 16:14, local time: 2017/12/15 06:27,
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