Graphics
4014 Emulation
In
4014 Mode
the
terminal
emulates
the
functions
of
a Tektronix 4014
terminal
equipped
with
the
Enhanced
Graphics Module option. 4014 Mode adds
the
following
features
to
the
terminal.
Refer to
the
manual
for
the
Tektronix 4014 for additional information on 4014 operations.
SCALED
4014
MODE
(SCL
4014).
In
4014 mode
the
screen resolution is extended to 4096 by
4096 addressable points (4096 X 3120 displayable).
Two
binary
bits
ofprecision
are
added to
the
address space. Points
are
addressed
as
0.25, 0.5, 0.75, 1.0, etc.
The
two
binary
bits
are
specified by
an
((extra byte," allowing 4010 graphics, which use only
the
integer
addresses of
the
4014, to
appear
full-sized on'the 4014-modedisplay.
The
address space is divided by 8 to
fit
the
entire
picture
on
the
512 by 390' screen. Graphics
drawn
in
this
mode
have
the
same
appearance on
the
screen
as
graphics
drawn
in
scaled mode.
Patterned
Vectors.
Whereas
the
4010 draws only solid vectors,
the
4014
has
five
line
types--solid, dotted, short-dash, long-dash,
and
dot-dash. Escape sequencesfor
these
line
types
are
accepted
in
SCL 4014 mode. These sequences
retain
their
HP
functional definitions
in
SCALED (4010) mode.
The
following commands select
the
line
type
for vector drawing:
Ec
I for
normal
vectors or
alphanumeric
data
Ec
a for dotted
line
vectors
Ec
b for dot-dashed vectors
Ec c for short-dashed vectors
Ec
d for long-dashed vectors
ThesequencesEc
<h
through
!>andEc
<p
through
t>canalsobeusedtoselectlinetypes.
The
terminal
accepts
the
line
type
specified by
the
sequence
but
ignores
the
4014 line-width
definition (defocused
and
write-thru
vectors
are
not supported on
the
HP
terminal.)
Variable
Character
Sizes.
The
terminal
ignores 4014 commandsfor
changing
character
size.
Thus
the
sequences
Ec
8,
Ec
9,
Ec
:
and
Ec
;
are
not
executed
in
4014 Mode (these commands
retain
their
HP
meanings
in
scaled mode.)
UNSCALED
4014 (UNS4014).The
same
vector-drawingcapabilitiesavailable
in
Scaled4014
mode apply
in
this
mode,
but
no scaling is performed.The 512 by 390 screendisplays a window
on
the
4096 by 3120 surface (the window is 1/64
the
total
image). As
in
unscaled mode,
the
relocatable origin is used to specify
the
window's lower left corner.
Alphanumeric
characters
are
directed to
alpha
memory,
as
they
are
in
unscaled mode.
INCREMENTAL
POINT
PLOT.
Sending
the
terminal
an
RS control
character
sets in-
cremental
point plot operation. Commands for
pen
up (SP)(i.e.,
an
ASCII ((SPACE") or
pen
down (P) control vector
drawing
in
this
mode. The
terminal
draws
a single dot
as
the
graphics
beam moves
in
one-point increments according to
the
following directional commands: D -
North; E -
Northeast;
A - East; I - Southeast; H -South; J - Southwest; B -West; F - Northwest.
POINT PLOT. An
FS
control code selects point plot mode operation.
As
HP
4010 line
type
11,
only
the
last
point of a vector is drawn.
SPECIAL
POINT
PLOT
MODE.
The
terminal
displays vectors
drawn
in
this
mode,
but
does
not
vary
the
intensity
of
the
graphics beam.
D-52
To Next Page
Loading...
