CHAPTER 9 HP-GL - 6
3. COMMANDS
3.1. Initialization and Default Setting Instructions
DF - Default set instruction
DF[;]
Returns the graphics mode to the default conditions.
The following are the default settings.
Function Equivalent
Instruction
Condition
Plot mode PA; Absolute plotting
Relative character direction DR 1,0; Horizontal
Line type LT; Solid line
Line pattern length LT; 4% of distance from P1 to P2
Window IW; Set at limits of printable area
according to paper size
Relative character size SR; Width=0.75% of |P2x - P1x|
Height=1.5% of |P2y - P1y|
Symbol mode SM; Off
Tick length TL; X-axis: 0.5% of |P2y - P1y|
Y-axis: 0.5% of |P2x - P1x|
Standard character set CS 0; Character set 0
Alternate character set CA 0; Character set 0
Character set SS; Standard character set selected
Character slant SL 0; 0 degrees
Scaling SC; Off
Label terminator DT chr$(3) chr$(3)
Chord angle ----- 5 degrees
Fill type FT; Bi-directional fill, type 1
Fill distance FT; 1% of distance from P1 to P2
Fill slant FT; 0 degrees
Pen Thickness PT; Set at 0.3 mm
NOTE: The location of the scaling points(P1, P2) remains constant.
IN - Initialize set instruction
IN[;]
Returns the graphics mode to the following initial conditions;
Function Equivalent
Instruction
Condition
Plot mode PA; Absolute
Relative character direction DR 1,0; Horizontal
Line type LT; Solid line
Line pattern length LT; 4% of distance from P1 to P2
Window IW; Set at limits of printable
area according to paper size
Relative character size SR; Width=0.75% of |P2x-P1X|
Height=1.5% of |P2y-P1y |
Symbol mode SM; Off
Tick length TL; X-axis: 0.5% of |P2y-P1y |
Y-axis: 0.5% of |P2x-P1x|
Standard character set CS 0; Character set 0
Alternate character set CA 0; Character set 0
Character set SS; Standard character set
selected
Character slant SL 0; 0 degrees
Scaling SC ; Off
Label terminator DT chr$(3) chr$(3)
Chord angle ----- 5 degrees
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