PA - Plot absolute ; PR - Relative coordinate pen move ; PA [ X, Y [,...]] [;] - Page 167

2001/10/02 

CHAPTER 4 HP-GL/2 - 19 

PA - Plot absolute 

PA [ X, Y [,...]] [;] 

X ; X coordinate of the cursor movement destination 
Y ; Y coordinate of the cursor movement destination 

• 

Coordinates are absolute values in user or current units.

• 

Whether used with or without parameters the command establishes absolute plotting as the plotting mode.

• 

The command moves the cursor to the specified coordinates, drawing straight lines, only when the pen is 
down.

• 

In symbol mode PA draws the specified symbol at each point in the parameter list.

• 

In polygon mode the specified coordinate pairs are placed in the polygon buffer.

• 

If an odd number of coordinates are specified,  the final (unpaired) coordinate is ignored. 

10 ' -- Plot Absolute -- 

20 WIDTH "LPT1:",255 

30 LPRINT CHR$(27);"E"; 

40 LPRINT CHR$(27);"%0B"; 

50 LPRINT "IN;SP1;"; 

60 LPRINT "PA2000,6000;PD0,6000,2000,7500,2000,6000;PU2500,6000;"; 

70 LPRINT "PAPD4500,6000,2500,7500,2500,6000;PU10365,500;"; 

80 LPRINT CHR$(27);"%0A"; 

90 LPRINT CHR$(27);"E"; 

100 END 

<Sample 24> 

PR - Relative coordinate pen move 

PR [X, Y [,...]] [;] 

X ; X coordinate of the cursor movement destination 
Y ; Y coordinate of the cursor movement destination 

• 

Coordinates used are relative values in current units.

• 

Whether u sed with or without parameters the command establishes relative plotting as the plotting mode.

• 

The command moves the cursor to the specified coordinates, drawing straight lines, only when the pen is 
down.

• 

You can specify any number of coordinated pairs and plotting is performed in the order the coordinates are 
specified.

• 

In symbol mode PR draws the specified symbol at each point in the parameter list.

• 

In polygon mode the specified coordinate pairs are placed in the polygon buffer.

• 

If an odd number of coordinates are specified,  the final (unpaired) coordinate is ignored. 

10 ' - Plot Relative - 

20 WIDTH "LPT1:", 255 

20 LPRINT CHR$(27); "E"; 

30 LPRINT CHR$(27); "%0B"; 

40 LPRINT "IN;SP1;" 

50 LPRINT "PA5000,4500,;PDPR-2000,0,2000,2000,0,-2000;PU500,0;" 

60 LPRINT "PD2000,0,-2000,2000,0,-2000;PU;" 

70 LPRINT CHR$(27); "%0A"; 

80 LPRINT CHR$(27); "E"; 

90 END 

<Sample 25>