Homelite 2400C, HL-P2500 AA Draw absolute arc, Arc centre X coordinate, Qc Arc angle in degrees

10/10/03

AA - Draw absolute arc
AA [ X, Y, qc [, qd ]] [;]
X ; Arc centre X coordinate	Y ; Arc centre Y coordinate
qc ; Arc angle in degrees	qd ; Chord angle in degrees

•Coordinates are absolute coordinates in current units.

•Starting from the current position, this command 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 execution of the command the cursor position is at the opposite end of the arc from the point at which plotting started.

•Plotting takes place only when the pen is down.

• If the command is invoked with the pen up, plotting is not performed, but the cursor position moves to what would have been the plot end point.

qc = Arc Angle

qd = Chord Angle

(X,Y)

•The value for qc is a clamped real number.

•When qc is positive, plotting is counterclockwise.

•When qc is negative, plotting is clockwise.

•The value for qd is a clamped real number in the range 0.5° to 180°. The default value is 5°.

10 '-- Draw Absolute Arc --

20 WIDTH "LPT1:",255

30 LPRINT CHR$(27);"E";

40 LPRINT CHR$(27);"%0B";

50 LPRINT "IN;SP1;IP1000,1000,6000,6000;"

60 LPRINT "SC0,100,0,100;"

70 LPRINT "PA0,30;"

80 LPRINT "PD;PA0,45;AA0,50,180;PA0,70;"

90 LPRINT "AA0,100,900;PA100,55;AA100,50,180;PA100,30;"

100 LPRINT "AA100,100,90;PA45,100;AA50,100,180;PA80,100;"

110 LPRINT "AA100,0,90;PA55,0;AA50,0,180;PA30,0;AA0,0,90;"

120 LPRINT "PU;PA50,50,CI20;"

130 LPRINT CHR$(27); "%0A";

140 LPRINT CHR$(27); "E";

150END

<Sample 26>

CHAPTER 4 HP-GL/2 - 20