100 PRINT TAB(26);"INKBLOT" 105 PRINT TAB(20);"CREATIVE COMPUTING" 110 PRINT TAB(18);"MORRISTOWN, NEW JERSEY" 115 PRINT:PRINT:PRINT 120 REM *** WORKS BY PLOTTING ELLIPSES AND THEIR MIRROR IMAGES 130 DIM A (12,13),B\$(36),A\$(36) 140 REM *** CHOOSE FROM 5 TO 12 ELLIPSES 150 M=INT(8*RND(1))+5 160 REM *** CREATE SIZE, LOCATION AND ANGLE OF M ELLIPSES 170 FOR L = 1 TO M 180 A(L,1) = 34*RND(1) 190 A(L,2) = 80*RND(1) 200 A(L,3) = (15*RND(1)+2)^2 210 A(L,4) = (15*RND(1)+2)^2 220 T=3.14159*RND(1) 230 A(L,5) = COS(T) 240 A(L,6) = SIN(T) 250 A(L,7) = A(L,5)*A(L,6) 260 A(L,5) = A(L,5)*A(L,5) 270 A(L,6) = A(L,6)*A(L,6) 280 A(L,8) = A(L,1)*A(L,1)*A(L,6) 290 A(L,9) = A(L,1)*A(L,1)*A(L,5) 300 A(L,10) = A(L,1)*A(L,7) 310 A(L,11) = -2*A(L,1)*A(L,6) 320 A(L,12) = -2*A(L,1)*A(L,5) 330 A(L,13) = A(L,6)/A(L,4)+A(L,5)/A(L,3) 340 NEXT L 350 REM *** PRINT TOP BORDER; B\$ CONTAINS 36 DOLLAR SIGNS 360 B\$="\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$\$" 370 PRINT B\$;B\$ 380 PRINT B\$;B\$ 390 REM *** LOOP Y IS Y-COORDINATE OF PLOT; EACH TIME Y LOOP 400 REM *** IS EXECUTED, A LINE IS PRINTED 410 FOR Y = 79.9 TO 0 STEP -1.6 420 A\$="\$\$ " 430 REM *** LOOP E CHECKS THE EQUATION OF EACH ELLIPSE TO SEE 440 REM *** IF IT INTERSECTS THE LINE TO BE PRINTED 450 FOR E=1 TO M 460 Y1=Y-A(E,2) 470 Y2=Y1*Y1 480 Y3=Y1*A(E,10) 490 Y4=Y1*A(E,7) 500 B=(A(E,12)+Y4)/A(E,3)+(-Y4+A(E,11))/A(E,4) 510 C=(Y2*A(E,6)+A(E,9)-Y3)/A(E,3)+(Y2*A(E,5)+A(E,8)+Y3)/A(E,4)-1 520 REM *** R IS THE RADICAL IN THE STANDARD QUADRATIC FORMULA 530 R=B*B-4*A(E,13)*C 540 IF R<0 THEN 690 550 R=SQR(R) 560 REM *** FIND WHERE THE LINE INTERSECTS IN THE ELLIPSE 570 R1=INT(-(B+R)/2/A(E,13)+1) 580 IF R1>34 THEN 690 590 R2=INT((R-B)/2/A(E,13)) 600 IF R2<1 THEN 690 610 IF R2<35 THEN 630 620 R2=34 630 IF R1>0 THEN 660 640 R1=1 650 REM *** FILL IN THE LINE WHERE IT CROSSES THE ELLIPSE 660 FOR J=R1+2 TO R2+2 670 A\$=LEFT\$(A\$,J-1)+"\$"+RIGHT\$(A\$,LEN(A\$)-J) 680 NEXT J 690 NEXT E 700 REM *** PRINT LINE 710 PRINT A\$; 720 FOR K=36 TO 1 STEP -1 730 PRINT MID\$(A\$,K,1); 740 NEXT K 745 PRINT 750 NEXT Y 760 REM *** PRINT BOTTOM BORDER 770 PRINT B\$;B\$ 780 PRINT B\$;B\$ 790 END