DR - Relative direction ; DR [ run, rise ] [;] ; CP - Character plot - Page 348

2001/10/02 

CHAPTER 9 HP-GL - 23 

DR - Relative direction 

DR [ run, rise ] [;] 

run : X direction component 

rise : Y direction component 

• 

A percentage of the distance in the X and Y directions between P1 and P2 is used as the units

• 

Specifies the character plot direction. 

• 

Values for the run and rise are clamped real numbers. 

• 

The instruction is ignored when values for both run and rise are 0. 

• 

When the parameter field is omitted,  the default value (horizontal direction) is used. 

θ

run=70%

rise = 60%

(70,0)

(0,60)

(0, 100)

(0, 100)

(100, 100)

CP - Character plot 

CP X,Y [;] 

X ; the number of text spaces the pen position is moved. 

Y ; the number of text lines the pen position is moved. 

• 

Moves the cursor the specified number of characters. 

• 

Values for X and Y are clamped real numbers. 

• 

When the parameter field is omitted,  the cursor is not moved along the X-axis but it is moved 1 character in 
the negative direction along the Y-axis (identical to executing CP 0, -1;). 

X increment

Y increment

Current position

10 '*** CPEX *** 

20 LPRINT "DF;SP1;PA1000,3000;PDPR3000,0;PU;PR-3000,0;" 

30 LPRINT "CP5,.55;LBABOVE THE LINE";CHR$(3);"PA2000,3000;" 

40 LPRINT "XT;CP0,-1.15;LBBELOW THE LINE";CHR$(13);CHR$(10);"AND 

WITH A NEAT";CHR$(3) 

50 LPRINT "CP;LBMARGIN";CHR$(3) 

60 END 

<Sample 85> 

SI - Set absolute character size 

SI [ width, height ] [;] 

width

 : the width in centimeters of printed characters 

height

 : the height in centimeters of printed characters 

• 

Specifies the size of characters to be plotted. 

• 

Values for 

width

 and 

height

 are clamped real numbers. 

• 

When the parameter field is omitted,  the default values are used (

width

: 0.1879 cm, 

height

: 0.2690 cm).