Atari Graphics &
Sound
277
For example,
if
the
following
statements
were
executed,
GRAPHICS 2
COLOR
159: PLOT
5,5
DRAWTO
5,0
a question mark
would
be displayed in
row
5,
column
5
of
the
graphics
window
when
the PLOT statement
is
executed.
Upon
execution
of
the
DRAWTO
statement, a
column
of
six
question
marks will be
output
from
row
5,
column
5
on
the
screen
to
row
0,
column
5.
PLOT
The PLOT statement
is
used in graphics modes 3
through
B
to
display a
point
on the graphics
window
. PLOT
uses
the
following
configuration,
PLOT column, row
where
column gives
the
column
position and
row
gives
the
row
number.
The
color
of
the
point
being
plotted
will
be
determined
by the
color
register specified by the most
recent
COLOR
statement.
If
no
COLOR
statement had been executed since
the
computer
was
powered
on
, the
point
will
be displayed by
the
PLOT statement in the
background
color
register.
Although
PLOT
is
generally used in graphics modes 3
through
B,
it can also be used in graphics modes
0,1,
and
2.
In modes 0, 1,
and
2,
a character rather than a
point
is
plotted
on
the
screen.
In graphics
mode
0,
the
numeric
expression specified
with
the
last
COLOR
statement will
determine
the character displayed by
PLOT. In graphics modes 1 and
2,
the last
COLOR
statement
will
choose
both
the character displayed by PLOT and
the
color
register
to
display that character. The
numeric
expression used
with
COLOR
will be 0,
if
a
COLOR
statement had
not
been
executed
prior
to the PLOT statement.
To Next Page
Loading...
