3.4. The polygon Group; The polygon Group ; EA - Edge rectangle absolute - Page 364

CHAPTER 9 HP-GL - 13 

10 '*** CIEX1 *** 
20 LPRINT "IN;SP1;IP2650,1325,7650,6325;" 
30 LPRINT "SC-100,100,-100,100;" 
40 LPRINT "PA-60,50;CI40,45;" 
50 LPRINT "PA60,50;CI40,30;" 
60 LPRINT "PA-60,-50;CI40,15;" 
70 LPRINT "PA60,-50;CI40,5;" 
80 END 
 
<Sample 65> 
 
10 '*** CIEX2 *** 
20 LPRINT "IN;SP1;IP2650,1325,8650,7325;" 
30 LPRINT "SC0,170,0,170;" 
40 LPRINT "PA100,100;LT;CI10,5;LT0;CI-20,5;LT1;CI30,5;" 
50 LPRINT "LT2;CI-40,5;LT3;CI50,5;LT4;CI-
60,5;LT5;CI70,5;LT6;CI80,5;" 
60 END 
 
<Sample 66> 
 
10 '*** CIEX3 *** 
20 LPRINT "IN;SP1;IP2650,1325,7650,6325;" 
30 LPRINT "SC-1000,1000,-1000,1000;" 
40 LPRINT "PA-800,800;" 
50 GOSUB 130 
60 LPRINT "PA200,800;" 
70 GOSUB 130 
80 LPRINT "PA-800,-200;" 
90 GOSUB 130 
100 LPRINT"PA200,-200;" 
110 GOSUB 130 
120 END 
130 LPRINT "CI70;PR600,0;CI70;PR-300,-300;CI250;" 
140 LPRINT "PR-300,-300;CI70;PR600,0;CI70;" 
150 RETURN 
 
<Sample 67> 

3.4.

The polygon Group 

Instruction Function 
EA 

Edge Absolute Rectangle 

ER 

Edge Relative Rectangle 

EW Edge 

Wedge 

RA 

Fill Absolute Rectangle 

RR 

Fill Relative Rectangle 

WG Fill 

Wedge 

EA - Edge rectangle absolute 

EA X, Y[;] 

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



X and Y coordinates are absolute coordinates in user units or graphics units. 



Plots the rectangle formed by the current position and the opposite angle 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. 



When scaling has been performed, the rectangle is plotted in user units. 



Also, when scaling has been performed, the values for X and Y are real numbers. 



When there is no scaling, the rectangle is plotted in graphics units.