Home » Archimedes archive » Acorn User » AU 1994-05.adf » !Risc_Risc » GCircle
GCircle
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 » Acorn User » AU 1994-05.adf » !Risc_Risc |
| Filename: | GCircle |
| Read OK: | ✔ |
| File size: | 028C bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
1REM>GCircle
2MODE "X800 Y600 G256":OFF
3DIM pal 256*4*2
4pal1=pal
5pal2=pal+256*4
6FOR c=0 TO 255:COLOUR c,c,c,c
7pal1!(c*4)=(c<<24) OR (c<<16) OR (c<<8)
8pal2!(c*4)=pal1!(c*4)
9NEXT
10FOR y=0 TO 599
11SYS "OS_SetColour",0,y*256/600
12LINE 0,y*2,1600,y*2
13NEXT
14SYS"OS_SetColour",3,255
15FOR r=590 TO 0 STEP -50
16CIRCLE FILL 800,600,r
17NEXT
18rf=(RND(1)*2+1)
19gf=(RND(1)*2+1)
20bf=(RND(1)*2+1)
21SYS "OS_SWINumberFromString",,"ColourTrans_WritePalette" TO wp
22i=0
23REPEAT
24 WAIT
25 SYS wp,-1,,pal+(i MOD 256)*4
26 r=127+127*COSRAD(rf*i)
27 g=127+127*COSRAD(gf*i)
28 b=127+127*COSRAD(bf*i)
29 w=(b<<24) OR (g<<16) OR (r<<8)
30 j=4*(i MOD 256)
31 pal1!j=w
32 pal2!j=w
33 i+=1
34UNTIL 0
�>GCircle � "X800 Y600 G256":� � pal 256*4*2 pal1=pal pal2=pal+256*4 � c=0 � 255:� c,c,c,c )pal1!(c*4)=(c<<24) � (c<<16) � (c<<8) pal2!(c*4)=pal1!(c*4) � � y=0 � 599 !ș "OS_SetColour",0,y*256/600 � 0,y*2,1600,y*2 � ș"OS_SetColour",3,255 � r=590 � 0 � -50 ȏ Ȑ 800,600,r � rf=(�(1)*2+1) gf=(�(1)*2+1) bf=(�(1)*2+1) @ș "OS_SWINumberFromString",,"ColourTrans_WritePalette" � wp i=0 � Ȗ ș wp,-1,,pal+(i � 256)*4 r=127+127*��(rf*i) g=127+127*��(gf*i) b=127+127*��(bf*i) ! w=(b<<24) � (g<<16) � (r<<8) j=4*(i � 256) pal1!j=w pal2!j=w ! i+=1 "� 0 �
00000000 0d 00 01 0d f4 3e 47 43 69 72 63 6c 65 0d 00 02 |.....>GCircle...| 00000010 18 eb 20 22 58 38 30 30 20 59 36 30 30 20 47 32 |.. "X800 Y600 G2| 00000020 35 36 22 3a 87 0d 00 03 11 de 20 70 61 6c 20 32 |56":...... pal 2| 00000030 35 36 2a 34 2a 32 0d 00 04 0c 70 61 6c 31 3d 70 |56*4*2....pal1=p| 00000040 61 6c 0d 00 05 12 70 61 6c 32 3d 70 61 6c 2b 32 |al....pal2=pal+2| 00000050 35 36 2a 34 0d 00 06 19 e3 20 63 3d 30 20 b8 20 |56*4..... c=0 . | 00000060 32 35 35 3a fb 20 63 2c 63 2c 63 2c 63 0d 00 07 |255:. c,c,c,c...| 00000070 29 70 61 6c 31 21 28 63 2a 34 29 3d 28 63 3c 3c |)pal1!(c*4)=(c<<| 00000080 32 34 29 20 84 20 28 63 3c 3c 31 36 29 20 84 20 |24) . (c<<16) . | 00000090 28 63 3c 3c 38 29 0d 00 08 19 70 61 6c 32 21 28 |(c<<8)....pal2!(| 000000a0 63 2a 34 29 3d 70 61 6c 31 21 28 63 2a 34 29 0d |c*4)=pal1!(c*4).| 000000b0 00 09 05 ed 0d 00 0a 0f e3 20 79 3d 30 20 b8 20 |......... y=0 . | 000000c0 35 39 39 0d 00 0b 21 c8 99 20 22 4f 53 5f 53 65 |599...!.. "OS_Se| 000000d0 74 43 6f 6c 6f 75 72 22 2c 30 2c 79 2a 32 35 36 |tColour",0,y*256| 000000e0 2f 36 30 30 0d 00 0c 14 86 20 30 2c 79 2a 32 2c |/600..... 0,y*2,| 000000f0 31 36 30 30 2c 79 2a 32 0d 00 0d 05 ed 0d 00 0e |1600,y*2........| 00000100 1a c8 99 22 4f 53 5f 53 65 74 43 6f 6c 6f 75 72 |..."OS_SetColour| 00000110 22 2c 33 2c 32 35 35 0d 00 0f 15 e3 20 72 3d 35 |",3,255..... r=5| 00000120 39 30 20 b8 20 30 20 88 20 2d 35 30 0d 00 10 13 |90 . 0 . -50....| 00000130 c8 8f 20 c8 90 20 38 30 30 2c 36 30 30 2c 72 0d |.. .. 800,600,r.| 00000140 00 11 05 ed 0d 00 12 11 72 66 3d 28 b3 28 31 29 |........rf=(.(1)| 00000150 2a 32 2b 31 29 0d 00 13 11 67 66 3d 28 b3 28 31 |*2+1)....gf=(.(1| 00000160 29 2a 32 2b 31 29 0d 00 14 11 62 66 3d 28 b3 28 |)*2+1)....bf=(.(| 00000170 31 29 2a 32 2b 31 29 0d 00 15 40 c8 99 20 22 4f |1)*2+1)...@.. "O| 00000180 53 5f 53 57 49 4e 75 6d 62 65 72 46 72 6f 6d 53 |S_SWINumberFromS| 00000190 74 72 69 6e 67 22 2c 2c 22 43 6f 6c 6f 75 72 54 |tring",,"ColourT| 000001a0 72 61 6e 73 5f 57 72 69 74 65 50 61 6c 65 74 74 |rans_WritePalett| 000001b0 65 22 20 b8 20 77 70 0d 00 16 07 69 3d 30 0d 00 |e" . wp....i=0..| 000001c0 17 05 f5 0d 00 18 07 20 c8 96 0d 00 19 1e 20 c8 |....... ...... .| 000001d0 99 20 77 70 2c 2d 31 2c 2c 70 61 6c 2b 28 69 20 |. wp,-1,,pal+(i | 000001e0 83 20 32 35 36 29 2a 34 0d 00 1a 17 20 72 3d 31 |. 256)*4.... r=1| 000001f0 32 37 2b 31 32 37 2a 9b b2 28 72 66 2a 69 29 0d |27+127*..(rf*i).| 00000200 00 1b 17 20 67 3d 31 32 37 2b 31 32 37 2a 9b b2 |... g=127+127*..| 00000210 28 67 66 2a 69 29 0d 00 1c 17 20 62 3d 31 32 37 |(gf*i).... b=127| 00000220 2b 31 32 37 2a 9b b2 28 62 66 2a 69 29 0d 00 1d |+127*..(bf*i)...| 00000230 21 20 77 3d 28 62 3c 3c 32 34 29 20 84 20 28 67 |! w=(b<<24) . (g| 00000240 3c 3c 31 36 29 20 84 20 28 72 3c 3c 38 29 0d 00 |<<16) . (r<<8)..| 00000250 1e 12 20 6a 3d 34 2a 28 69 20 83 20 32 35 36 29 |.. j=4*(i . 256)| 00000260 0d 00 1f 0d 20 70 61 6c 31 21 6a 3d 77 0d 00 20 |.... pal1!j=w.. | 00000270 0d 20 70 61 6c 32 21 6a 3d 77 0d 00 21 09 20 69 |. pal2!j=w..!. i| 00000280 2b 3d 31 0d 00 22 07 fd 20 30 0d ff |+=1..".. 0..| 0000028c
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