Fill - AMSTRAD cpc 6128 User Instruction

To plot four smaller circles on the screen, type in the following program:
new
1'" CLS
2'" FOR a=1 TO 36'"
3'" ORIGIN 196,282
4'" PLOT S"'*COS(a),S"'*SIN(a)
S'" ORIGIN 442,282
6'" PLOT S"'*COS(a),S"'*SIN(a)
7'" ORIGIN 196,116
8'" PLOT S"'*COS(a),S"'*SIN(a)
9'" ORIGIN 442,116
1"'''' PLOT
S"'*COS~a),S"'*SIN(a)
11'" NEXT
run
To see a different way of creating a circle, type in the following program:
new
1'" MODE 1
2'" ORIGIN 32"',20'"
3'" DEG
4'" MOVE "',19'"
S'" FOR a='" TO 36'" STEP 1'"
6'" DRAW 19"'*SIN(a),19"'*COS(a)
7'" NEXT
run
This time a line is D RA Wn from co-ordinate to co-ordinate around the circumference
of the circle. Note how the circle is drawn much quicker than it is plotted.
Once again observe the effect of removing the D E G command, by deleting line 30,
then RUN ning the program again.
FILL
The F ILL command is used to fill an area ofthe screen which is enclosed by drawn or
edge of screen/graphics window boundaries.
Reset the computer, [CONTROL][SHIFT] [ESC], then type in:
new
1'" cls
2'" move 2"',2'"
3'" draw 62"',2'"
4'" draw 31"',38'"
S'" draw 2"',2'"
run
Chapter 1 Page 62 Foundation Course