Brother HL- SERIES, Technical Reference Manual, Page: 287 / 392

Revision C 16/01/96
Chapter 8 "HP-GL2" 21
AT - Absolute Arc Three Point
AT X
1
, Y
1
, X
2
, Y
2
[, qd] [;]
X
1
; x-coordinate of intermediate point Y
2
; y-coordinate of intermediate point
X
2
; x-coordinate of end point y
2
; y-coordinate of end point
qd ; the chord angle used to draw the arc
•
All coordinates are absolute and in current units.
•
The command draws an arc from the current position, through the specified intermediate position and
finishing at the specified end position.
•
After completion of the command the current cursor position is at the end of the arc.
•
An arc can be drawn clockwise or anti-clockwise.
•
If the current scaling mode is not isotropic, the arc may be elliptical rather than circular.
•
The chord angle must be in the range 0.5° to 180°.
•
The default chord angle is 5°.
10 '--Absolute Arc Three Point--
20 WIDTH "LPT1:",255
30 LPRINT CHR$(27);"E";
40 LPRINT CHR$(27);"%0B";
50 LPRINT "IN;SP1;";
60 LPRINT "PA1000,100;PD2500,100;"
70 LPRINT "PU650,1150;PD1000,1150;"
80 LPRINT "PU650,450;PD1000,450;"
90 LPRINT "PU1000,100;PD1000,1500,2500,1500;"
100 LPRINT "AT3200,800,2500,1500;"
110 LPRINT "PU3200,900;PD;"
120 LPRINT "AT3300,800,3200,700;"
130 LPRINT "PU3300,800;PD3500,800;"
140 LPRINT CHR$(27);"%0A";
150 LPRINT CHR&(27);"E";
160 END
<Sample 28>