Specifications

Revision C 16/01/96

Chapter 9 "HP-GL" 19

2.4. 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.

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

urrent position

(X, Y)

10 '*** EAEX ***

20 LPRINT "IN;SP1;PA7000,4000;"

30 LPRINT "PT.3;FT1;RA6000,3000;"

40 LPRINT "SP3,;EA6000,3000;"

50 LPRINT "SP4;FT3,100;RA8000,3000;"

60 LPRINT "SP3,;EA8000,3000;"

70 LPRINT "SP5;PT.3;FT2;RA8000,5000;"

80 LPRINT "SP3;EA8000,5000;"

90 LPRINT "SP6;FT4,100,45;RA6000,5000;"

100 LPRINT "SP3;EA6000,5000;PG"

110 END