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CIGAL Reference Manual, Chapter 1 (Topics): internals

Internals -- Internal Variables

The following is a brief summary of the internal variables CIGAL uses to control various aspects of its operation. These variables are described in chapter 4 of the CIGAL User's Manual (see AFLAGS(4)).

In this table, the TYPE entry indicates the data type for each variable: Number (N), Character String (S), String List (SL), Array (A), Matrix (M), Image (I), Vector (V), Vector List (VL), Pointer (P)

NAME	TYPE	MEANING
====	====	=======
aflags	N	Flag controlling arithmetic options
barleng	N	Default length of SKETCH calibration bar
bitmask	N	not used
boxval
calbar	N	not used
calfact
camera	N	Camera select for image processor digitizer
cgain	N	Image processor camera gain
chkkey
cmdlin	S	DOS arguments to CIGAL when the program was started
coffset	N	Image processor camera offset
com1
com2
cpuspeed	N	CPU processing speed in MHz (approx.)
ctrap	S	Command string to be executed upon <Control>-C
cursor	N	Flag controlling cursor options
cursval	N	not used
cursx	N	Current X postition of cursor
cursy	N	Current Y postition of cursor
dac0	N	Value of 1st D/A converter if present
dac1	N	Value of 2nd D/A converter if present
datadir	S	Template for names of numbered file variables
debug	N	Flag controlling debugging options
drawkeys	S
editor	S	Name of file editor to use with ED command
emembase
ememsize
flags	N	Flag controlling runtime options
fmenu	SL	Srings defining Function keys and mouse buttons
freestack	N	Amount of free stack remaining
getx	N	Get new X postition of cursor
gety	N	Get new Y postition of cursor
gflags	N	Flag controlling graphics options
gplane	N	Current graphics memory plane
gunit
hdrtxt	S	Text stored in header block of file variables
helpfile	S	Name of CIGAL help file (includes error messages)
ibase	N	Default base for numerical input (usually 10)
iflags	N	Flag controlling image processor options
iplane	N	Current image processor memory plane
keybd	N	Get a character from the keyboard
lastvec	N	Highest vector number created in VECS
lcolor	N	Line color value for drawing vectors
lpat	N	Line pattern value for drawing vectors (not used)
lwidth	N	Line width value for drawing vectors (has bugs)
margsize	N	Width of graphics screen including menu margin
menufile	S
menuflag	N	Flag controlling which screen menu is active
nargs	N	Number of arguments for current macro program
nmenus
nvecs	N	Number of active vectors in VECS
nvdata
obase	N	Number base for TYPE output (usually 10)
outlun	N	Unit number for standard output (1 = CRT screen)
path	S	List of directories to search for macros and menus
penwidth	N	How many drawn lines per vector line (usually 1)
prompt	S	Current command prompt message
prpage	N	Number of pages per printer page
quitstr	S	Command string to be executed when quitting CIGAL
sflags	N	Flag controlling SKETCH options
simage	P
stack	A	LONG array for direct access to internal stack
state	N	Flag indicating current execution state
sysdir	S	Name of CIGAL system directory
tablet	N	Flag controlling digitizing tablet options
unit	N	Current active device
vdata	P
vdatfil	S
version	N	Current CIGAL version number
vec0
vecfil	S	Name of temporary file used for VECS
vecs	P	Pointer to a file vector list (VL) containing the list of active display vectors
vimage	P	Pointer to matrix or image variable in which to draw active graphics vectors
vmode	N	Current video mode
vpage
vplane	N	Current video plane
vwindow
xmarg	N	Width of graphics menu margin
zimage	P	Pointer to matrix or image variable in which to draw depth map (Z-values) of active graphics vectors
zvalue	N	Default Z value for creating vectors

See Also:
CIGAL Home, CIGAL Manual, Topics List, Manual Help

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