Commodore 128D - Page 269

DRAW
—Draw dots, lines and shapes at specified positions on screen
DRAW [color source], [X1, Y1][TO X2, Y2]...
This statement draws individual dots, lines, and shapes. Here are the
parameter values:
where:
Color source
X1,Y1
X2,Y2
0 color background
1 color foreground
2 Multicolor 1
3 Multicolor 2
Starting coordinate (scaled)
Ending coordinate (scaled)
The X and Y values can place the pixel cursor at absolute coordi
nates such as (100,100) or at coordinates relative to the previous
position (+ / - x and + / - y) of the pixelcursor such as (+ 20, -10).
The coordinate of one axis (x or y) can be relative and the other can
be absolute. Here are the possible combinations of. ways to specify
the x and y coordinates:
x,y
±x,y
x,±y
±x,±y
absolute x, absolute y
relative x, absolute y
absolute x, relative y
relative x, relative y
Also see the LOCATE command for information on the pixel cursor.
The graphics commands DRAW, BOX, CIRCLE, PAINT, LOCATE AND
GSHAPE have an additional notation which allows you to specify a
distance and an angle relative to the previous coordinates of the
pixel cursor (PC). The notation is as follows:
KEYWORD
where:
KEYWORD
SOURCE
DISTANCE
ANGLE
source, distance; angle
is a graphics command such as. DRAW,
CIRCLE, PAINT, LOCATE, BOX or GSHAPE
is the same code as in all of the graphics
commands
is the number of pixels to move the pixel
cursor
is the number of degrees to move relative to
the previous pixel cursor coordinate
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BASIC 7.0 ENCYCLOPEDIA—Basic Commands and Statements