Home » Archimedes archive » Archimedes World » AW-1995-02-Disc1.adf » Disk1Feb95 » !AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3
!AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
Tape/disk: | Home » Archimedes archive » Archimedes World » AW-1995-02-Disc1.adf » Disk1Feb95 |
Filename: | !AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3 |
Read OK: | ✔ |
File size: | 01F6 bytes |
Load address: | 0000 |
Exec address: | 0000 |
Duplicates
There are 3 duplicate copies of this file in the archive:
- Archimedes archive » Archimedes World » AW-1994-12-Disc1.adf » Disk1Dec94 » !AWDec94/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3
- Archimedes archive » Archimedes World » AW-1995-01-Disc1.adf » Disk1Jan95 » !AWJan95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3
- Archimedes archive » Archimedes World » AW-1995-05-Disc1.adf » AWMay95_1 » InTheMag/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3
- Archimedes archive » Archimedes World » AW-1995-02-Disc1.adf » Disk1Feb95 » !AWFeb95/Goodies/DrawBasic/!DrawBasic/Library/Examples/Chapter/Exer_3/Ex_3/3
File contents
REM > Magic Rose based on circle centre (a,b) with n points (n is a prime number) a=5 : b=5 : radius=5 INPUT "Prime# of points";n angle=2*PI/n DIM x(n),y(n) FOR i=0 TO n x(i)=a+radius*COS(i*angle) : y(i)=b+radius*SIN(i*angle) NEXT path=�PolyJoin(x(),y()) �Quit END DEF �PolyJoin(x(),y()) LOCAL n,k,i : n=DIM(x(),1) �PathBegin(path) �Move(x(0),y(0)) FOR k=1 TO n DIV 2 i=0 REPEAT : i=(k+i) MOD n �Draw(x(i),y(i)) UNTIL i=0 NEXT �PathEnd =path
00000000 0a 52 45 4d 20 3e 20 4d 61 67 69 63 20 52 6f 73 |.REM > Magic Ros| 00000010 65 20 62 61 73 65 64 20 6f 6e 20 63 69 72 63 6c |e based on circl| 00000020 65 20 63 65 6e 74 72 65 20 28 61 2c 62 29 20 77 |e centre (a,b) w| 00000030 69 74 68 20 6e 20 70 6f 69 6e 74 73 20 28 6e 20 |ith n points (n | 00000040 69 73 20 61 20 70 72 69 6d 65 20 6e 75 6d 62 65 |is a prime numbe| 00000050 72 29 0a 20 20 20 20 20 20 61 3d 35 20 3a 20 62 |r). a=5 : b| 00000060 3d 35 20 3a 20 72 61 64 69 75 73 3d 35 0a 20 20 |=5 : radius=5. | 00000070 20 20 20 0a 20 20 20 20 20 0a 49 4e 50 55 54 20 | . .INPUT | 00000080 22 50 72 69 6d 65 23 20 6f 66 20 70 6f 69 6e 74 |"Prime# of point| 00000090 73 22 3b 6e 0a 61 6e 67 6c 65 3d 32 2a 50 49 2f |s";n.angle=2*PI/| 000000a0 6e 0a 20 20 20 20 20 20 0a 44 49 4d 20 78 28 6e |n. .DIM x(n| 000000b0 29 2c 79 28 6e 29 0a 46 4f 52 20 69 3d 30 20 54 |),y(n).FOR i=0 T| 000000c0 4f 20 6e 0a 20 78 28 69 29 3d 61 2b 72 61 64 69 |O n. x(i)=a+radi| 000000d0 75 73 2a 43 4f 53 28 69 2a 61 6e 67 6c 65 29 20 |us*COS(i*angle) | 000000e0 3a 20 79 28 69 29 3d 62 2b 72 61 64 69 75 73 2a |: y(i)=b+radius*| 000000f0 53 49 4e 28 69 2a 61 6e 67 6c 65 29 0a 20 4e 45 |SIN(i*angle). NE| 00000100 58 54 0a 20 0a 0a 20 70 61 74 68 3d bb 50 6f 6c |XT. .. path=.Pol| 00000110 79 4a 6f 69 6e 28 78 28 29 2c 79 28 29 29 0a 20 |yJoin(x(),y()). | 00000120 20 20 0a a0 51 75 69 74 0a 0a 45 4e 44 0a 0a 44 | ..Quit..END..D| 00000130 45 46 20 bb 50 6f 6c 79 4a 6f 69 6e 28 78 28 29 |EF .PolyJoin(x()| 00000140 2c 79 28 29 29 0a 4c 4f 43 41 4c 20 6e 2c 6b 2c |,y()).LOCAL n,k,| 00000150 69 20 3a 20 6e 3d 44 49 4d 28 78 28 29 2c 31 29 |i : n=DIM(x(),1)| 00000160 20 0a a0 50 61 74 68 42 65 67 69 6e 28 70 61 74 | ..PathBegin(pat| 00000170 68 29 0a 20 a0 4d 6f 76 65 28 78 28 30 29 2c 79 |h). .Move(x(0),y| 00000180 28 30 29 29 0a 20 20 46 4f 52 20 6b 3d 31 20 54 |(0)). FOR k=1 T| 00000190 4f 20 6e 20 44 49 56 20 32 0a 20 20 20 69 3d 30 |O n DIV 2. i=0| 000001a0 0a 20 20 20 52 45 50 45 41 54 20 3a 20 69 3d 28 |. REPEAT : i=(| 000001b0 6b 2b 69 29 20 4d 4f 44 20 6e 20 0a 20 20 20 20 |k+i) MOD n . | 000001c0 a0 44 72 61 77 28 78 28 69 29 2c 79 28 69 29 29 |.Draw(x(i),y(i))| 000001d0 0a 20 20 20 20 55 4e 54 49 4c 20 69 3d 30 0a 20 |. UNTIL i=0. | 000001e0 20 20 4e 45 58 54 0a a0 50 61 74 68 45 6e 64 0a | NEXT..PathEnd.| 000001f0 3d 70 61 74 68 0a |=path.| 000001f6