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2001/10/02
CHAPTER 4 HP-GL/2 - 27
• r specifies the radius of the circle. A positive value for r places the 0° reference point onto the positive x-
axis and a negative value for r places the 0° reference point onto the negative x-axis.
• The value for q1 is a clamped real number.
q1
qc
r
0° reference point
current
position
• q1 specifies the wedge starting point relative to the 0 degree reference point.
• When q1 is positive, the positive direction of the X axis relative to the current position is set at 0 degrees and
the start point is sought in the counterclockwise direction. The opposite occurs when q1 is negative: the
negative X axis is set at 0 degrees and the start point is sought by going clockwise.
• qc specifies the angle of the wedge in degrees.
• The value for qc is a clamped real number.
• Plotting proceeds counterclockwise when qc is positive and clockwise when negative.
• The value for qd must be an integer from -32,768 to +32,767.
• When qd is not specified, the chord angle is the default value ( 5 degrees )
10 '- Edge Wedge -
20 WIDTH "LPT1:", 255
30 LPRINT CHR$(27); "E";
40 LPRINT CHR$(27); "%0B";
50 LPRINT "IN;SP1;"
60 LPRINT "PA2000,5000;"
70 LPRINT "EW1250,90,180,5;"
80 LPRINT "EW1250,270,120;"
90 LPRINT "EW1250,30,60;"
100 LPRINT CHR$(27); "%0A";
110 LPRINT CHR$(27); "E";
120 END
<Sample 33>
RA - Fill rectangle absolute
RA X, Y[;]
X ; X coordinate of opposite corner for the rectangle
Y ; Y coordinate of opposite corner for the rectangle
• X and Y coordinates are absolute coordinates in current units.
• Fill the rectangle formed by the current position and the opposite corner specified by X and Y.
• After plotting, the cursor returns to its point of origin.
• Plotting is performed whether the pen is up or down.
10 ' - Fill Absolute Rectangle -
20 WIDTH "LPT1:", 255
30 LPRINT CHR$(27); "E";
40 LPRINT CHR$(27); "%0B";
50 LPRINT "IN;SP1;PA5000,4000;"
60 LPRINT "FT1;RA4250,3250;"
70 LPRINT "FT3,100;RA5750,3250;"
80 LPRINT "FT2;RA5750,4750;"