Exercise 7: Graphics Input (Gin); Enabling Gin; Enabling The Keyboard - Tektronix 4106 Operator's Manual

GETTING ACQUAINTED
EXERCISE 7: GRAPHICS INPUT (GIN)
Graphics input (GIN) allows you to send graphics coordinates from the terminal to
the host computer. This exercise gives you a brief introduction to GIN and two of
the GIN features your application program may use: inking and rubberbanding .
(If you are doing this exercise out of sequence, do Exercise 1, do the steps of
Creating a Graphics Image in Exercise 4, and do the steps of Using the Color Map
in Exercise 5.) Before starating this exercise ,
be sure the terminal
is
not togged in
to a host computer.
ENABLING GIN
Normally, a host program enables the keyboard or a tablet to perform specific GIN
functions , and prompts you for the data. To do the exercise , however, you ' ll first
enable one of these devices for GIN , then enter graphics coordinates.
If you have a tablet , follow the instructions for enabling it. Otherwise , follow the
instructions for enabling the keyboard . Then , follow the instructions for entering
points .
Enabling the Keyboard
If you have a graphics tablet, skip these instructions and go directly to Enabling the
Tablet. If you don 't have a tablet, follow these instructions to enable the terminal
keyboard for GIN .
Put the terminal in Setup (if it isn't already) and enter :
GINENABLE 0 ,5
Notice that when you pressed the Return key, the GIN cursor (a pair of crosshairs)
appeared on the terminal screen .
In the GINENABLE command , the 0 specified that you'll be using the keyboard ,
and the 5 means that the terminal will accept five points .
Now enable GIN inking and rubberbanding :
GININKING 0,2
GINRUBBERBAND 0,2
Press the Setup key to remove the terminal fro m Setup.
The terminal leaves Setup and begins responding to your GIN operations .
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