RR - Fill rectangle relative ; WG - Fill wedge ; RR X, Y[;] - Page 176

2001/10/02 

CHAPTER 4 HP-GL/2 - 28 

90 LPRINT "FT4,100,45;RA4250,4750;" 

100 LPRINT CHR$(27); "%0A"; 

110 LPRINT CHR$(27); "E"; 

120 END 

<Sample 34> 

RR - Fill rectangle relative  

RR X, Y[;] 

X ; X coordinate of opposite corner for the rectangle 
Y ; Y coordinate of opposite corner for the rectangle 

• 

Coordinates relative to the current position 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 Relative Rectangle - 

20 WIDTH "LPT1:", 255 

30 LPRINT CHR$(27); "E"; 

40 LPRINT CHR$(27); "%0B"; 

50 LPRINT "IN;SP1;PA5000,4000;" 

60 LPRINT "FT1;RR750,750;" 

70 LPRINT "PR750,0;" 

80 LPRINT "FT3,100;RR750,750;" 

90 LPRINT "PR0,750;" 

100 LPRINT "FT2;RR750,750;" 

110 LPRINT "FT4,100,45;RR-750,750;" 

120 LPRINT CHR$(27); "%0A"; 

130 LPRINT CHR$(27); "E"; 

140 END  

<Sample 35> 

WG  - Fill wedge  

WG 

r

,

q1

,

qc

(,

qd

)[;] 

r

 ; Radius in current units 

q1

 ; Start point angle 

qc

 ; Arc angle 

qd

 ; Chord angle 

• 

Fill in a wedge centred on the current position with radius 

r

, start point angle 

q1

, arc angle 

qc

 and chord angle 

qd

. 

• 

After plotting, the cursor returns to its point of origin. 

• 

Plotting is performed whether the pen is up or down. 

• 

You should use this command with the type "isotropic".  Anisotropic type may make the wedge stretch. 

• 

r

 specifies the radius of circle.  A positive value places the 0° reference point onto the positive x-

axis and the negative value places it onto the negative x-axis. 

• 

The value for 

q1

 is a clamped real number. 

• 

q1

 specifies the wedge starting point related to the 0° 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 clo ckwise. 

• 

qc

 specifies the angle of the wedge. 

• 

The value for 

qc

 is a clamped real number. 

• 

Plotting proceeds counterclockwise when 

qc

 is positive and clockwise when negative. 

• 

The value for 

qd

 is a clamped real number. 

• 

When 

qd

 is not specified, the chord angle  is the default value ( 5 degrees ).