Brother HL-Series Technical Reference Manual page 341

Revision C 16/01/96
AA - Draw Absolute Arc
AA [ X, Y, qc [, qd ]] [;]
X ; Arc centre X coordinate
qc ; Arc angle in degrees
• X and Y coordinates are absolute coordinates in user units or graphics units.
• Starting from the current position, plots an arc centred on the absolute coordinates X, Y having the
specified arc angle and chord angle, with the radius being the distance between the current position and the
point X,Y.
• After plotting, the cursor position moves to the plot end point.
• Plotting is performed only when the pen is down.
• When the pen is up, plotting is not performed, but the cursor position moves to the plot end point.
• When scaling has been performed, the cursor is moved by absolute coordinates in user units.
• Also, when scaling has been performed, the values for X and Y are real numbers.
• When there is no scaling, the cursor is moved by absolute coordinates in graphics units.
• When there is no scaling, the coordinate values for X and Y are integer number.
• The value for pc is a clamped real number.
• When qc is positive, counterclockwise plotting from the current point is performed.
• When qc is negative, plotting is made clockwise from the current position.
• The value for qd is a clamped real number.
• When qd is not specified, the chord angle is the default value ( 5 degrees ).
10 '*** AAEX ***
20 LPRINT "IN;SP1;IP2650,1325,7650,6325;"
30 LPRINT "SC0,100,0,100;"
40 LPRINT "PA0,30;"
50 LPRINT "PD;PA0,45;AA0,50,180;PA0,70;"
60 LPRINT "AA0,100,90;PA45,100;AA50,100,180;PA70,100;"
70 LPRINT "AA100,100,90;PA100,55;AA100,50,180;PA100,30;"
80 LPRINT "AA100,0,90;PA100,55;AA100,50,180;PA70,100;"
90 LPRINT "AA100,0,90;PA55,0;AA50,0,180;PA30,0;AA0,0,90;"
100 LPRINT "PU;PA50,50,CI20;"
110 END
qd = Chord Angle
(X,Y)
Chapter 9 "HP-GL" 14
Y ; Arc centre Y coordinate
qd ; Chord angle in degrees
qc = Arc Angle