IntelliTech Intellibar M412, Справочное руководство, Страница: 148 / 187

HP PCL Graphics Commands 9-35
Arc Relative (AR)
AR X
increment ,
Y
incrementent ,
sweep angle [, chord angle ;]
This command draws an arc using relative coordinates which starts at the current pen
location and pivots around the current center point.
Table 9-15 Arc Relative Command Parameters
Parameter Format Functional Range Default
X
increment,
Y
increment
currents units -2
30
to 2
30
- 1 None
sweep angle clamped real -32768 to 32767 None
chord angle clamped real 0.5
o
to 180
o
5
o
The AR command draws an arc starting at the current pen location using the current pen
up/down status, line type, and attributes. After drawing the arc, the pen location remains at
the end of the arc.
Absolute Arc Three Point (AT)
AT X
inter ,
Y
inter ,
X
end ,
Y
end
[, chord angle ;]
This command draws an arc segment using absolute coordinates from a starting point,
through an intermediate point, to an end point. Use the AT command when you know these
three points of arc.
Table 9-16 Absolute Arc Three Point Command Parameters
Parameter Format Functional Range Default
X
inter,
Y
inter
currents units -2
30
to 2
30
- 1 None
X
end,
Y
end
current units -32768 to 32767 None
chord angle clamped real 0.5
o
to 180
o
5
o
The AT command uses the current pen location and two specified points to calculate a
circle and draw the appropriate arc segment of its circumference. The arc starts at the
current pen location using the current pen, line type, line attributes, and pen up/down
status. You specify the intermediate and end points. After drawing the arc, the pen location
remains at the end of the arc.