RR - Fill rectangle relative ; WG - Fill wedge ; RR X, Y[;] - Page 184

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 0º 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 0º 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. 



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 ).