RA - Fill rectangle absolute ; RR - Fill rectangle relative ; RA X, Y[;] - Page 341

2001/10/02 

CHAPTER 9 HP-GL - 16 

RA - Fill rectangle absolute 

RA 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. 

• 

Fill in 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. 

• 

When there is no scaling, the coordinate values for X and Y are integer numbers. 

Current position

(X, Y)

Fill pattern specified by FT and PT

10 '*** RAEX *** 

20 LPRINT "IN;SP1;PA5000,4000;" 

30 LPRINT "PT.3;FT1;RA4250,3250;" 

40 LPRINT "FT3,100;RA5750,3250;" 

50 LPRINT "FT2;RA5750,4750;" 

60 LPRINT "FT4,100,45;RA4250,4750;" 

70 END 

<Sample 71> 

RR - Fill rectangle relative  

RR X, Y[;] 

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

• 

Coordinates are relative to the current position in user units or graphics units. 

• 

Fill in 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. 

• 

When there is no scaling, the coordinate values for X and Y are integer numbers. 

Current position

Fill pattern specified by FT and PT

Y increment

X increment

10 '*** PREX *** 

20 LPRINT "IN;SP1;PA5000,5000;" 

30 LPRINT "PT.3;FT1;RR500,500;" 

35 LPRINT "PR500,0;" 

40 LPRINT "FT3,70;RR500,500;" 

45 LPRINT "PR0,500;" 

50 LPRINT "FT2;RR500,500;" 

60 LPRINT "FT4,70,45;RR-500,500;" 

70 END 

<Sample 73>