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/cvs/lsys/lib/tiling.l
Revision: 1.1
Committed: Thu Nov 6 14:31:25 2008 UTC (15 years, 6 months ago) by root
Branch: MAIN
CVS Tags: HEAD
Log Message:
*** empty log message ***

File Contents

# Content
1
2 // These LSystems are designed to be run from FRACTINT. No compilation is
3 // necessary, just copy this file to the FRACTINT directory and run FRACTINT.
4 // Select the lsystem fractal type and press F6 to select a file.
5
6
7 // This is the old ColorPenrose1 with three changes.
8 // 1. A brighter red and green
9 // 2. The name was changed to group the Penrose tilings together
10 // 3. The comment was corrected.
11
12 ruleset ( // by Herb Savage
13 // based on Martin Gardner's "Penrose Tiles to Trapdoor Ciphers",
14 // Roger Penrose's rhombuses
15 // Uses color to show similar lines
16
17 Penrose_color(n) => attr (delta, 360/10) +WF--XF---YF--ZF, n;
18 W => YF++ZF----XF[-YF----WF]++;
19 X => +YF--ZF[---WF--XF]+;
20 Y => -WF++XF[+++YF++ZF]-;
21 Z => --YF++++WF[+ZF++++XF]--XF;
22 F => ;
23 )
24
25 // This tiling actually does what the old comment for ColorPenrose1 said
26 // it did.
27
28 ruleset ( // by Herb Savage
29 // based on Martin Gardner's "Penrose Tiles to Trapdoor Ciphers",
30 // Roger Penrose's rhombuses
31 // Uses color to show the edge matching rules to force nonperiodicy
32
33 Penrose_forced(n) => attr (delta, 360/10) +WFF--XFF---YFF--ZFF, n;
34 W => YFF++ZFF----XFF[-YFF----WFF]++;
35 X => +YFF--ZFF[---WFF--XFF]+;
36 Y => -WFF++XFF[+++YFF++ZFF]-;
37 Z => --YFF++++WFF[+ZFF++++XFF]--XFF;
38 F => ;
39 )
40
41 ruleset ( // by Herb Savage
42 // based on Martin Gardner's "Penrose Tiles to Trapdoor Ciphers",
43 // Roger Penrose's kites and darts
44
45 Kites_and_darts(n) => attr (delta, 360/10) Wf+Xf+Wf+Xf+Wf+Xf+Wf+Xf+Wf+X, n;
46 W => [F][++ attr (distance, distance*01.618033989) F][++f--- attr (distance, distance*0.618033989) f|X-Y|f|W];
47 X => [F+++ attr (distance, distance*01.618033989) F][++ attr (distance, distance*0.618033989) fZ|X|-f|W];
48 Y => [+F][ attr (distance, distance*01.618033989) F][+f attr (distance, distance*0.618033989) |Y+X];
49 Z => [-F][ attr (distance, distance*01.618033989) F][ attr (distance, distance*0.618033989) f--Wf|+Z];
50 F => ;
51 )
52
53 ruleset ( // by Herb Savage
54 // based on Martin Gardner's "Penrose Tiles to Trapdoor Ciphers",
55 // Roger Penrose's kites and darts
56
57 Kites_and_darts_color(n) => attr (delta, 360/10) Wf+Xf+Wf+Xf+Wf+Xf+Wf+Xf+Wf+X, n;
58 W => [F][++ attr (distance, distance*01.618033989) F][++f--- attr (distance, distance*0.618033989) f|X-Y|f|W];
59 X => [F+++ attr (distance, distance*01.618033989) F][++ attr (distance, distance*0.618033989) fZ|X|-f|W];
60 Y => [+F][ attr (distance, distance*01.618033989) F][+f attr (distance, distance*0.618033989) |Y+X];
61 Z => [-F][ attr (distance, distance*01.618033989) F][ attr (distance, distance*0.618033989) f--Wf|+Z];
62 F => ;
63 )
64
65 ruleset ( // by Herb Savage
66 // based on Martin Gardner's "Penrose Tiles to Trapdoor Ciphers"
67
68 Spiral_tile(n) => attr (delta, 360/16) X++X++X++X++|f|X++X++X++X, n;
69 X => [FX+++++ attr (distance, distance*0.7653668647) F attr (distance, distance/0.7653668647) [-----Y]+++++F];
70 Y => [F+++++ attr (distance, distance*0.7653668647) F attr (distance, distance/0.7653668647) [-----Y]+++++F];
71 )
72
73 ruleset ( // by Herb Savage
74 // based on Martin Gardner's "Penrose Tiles to Trapdoor Ciphers",
75 // A spiral tiling by Heinz Voderberg
76
77 Voderberg_tile(n) => attr (delta, 360/30) -(84.1) A -(96) attr (distance, distance*04.783386117) f attr (distance, distance/04.783386117) +(96) A, n;
78 A => X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) X -(12) Z;
79 X => [F -(78) F -(46.37236) attr (distance, distance*03.393427) F attr (distance, distance/03.393427) +(46.37236) F -(114) [ -(168) X -(24) Y]F -(78) F -(46.37236) attr (distance, distance*03.393427) F attr (distance, distance/03.393427) +(46.37236) F +(78) F];
80 Y => [F -(78) F -(46.37236) attr (distance, distance*03.393427) F attr (distance, distance/03.393427) +(46.37236) F +(78) F -(168) [ -(192) Y]F -(78) F -(46.37236) attr (distance, distance*03.393427) F attr (distance, distance/03.393427) +(46.37236) F];
81 Z => [F -(78) F -(46.37236) attr (distance, distance*03.393427) F attr (distance, distance/03.393427) +(46.37236) F -(114) F -(78) F -(46.37236) attr (distance, distance*03.393427) F attr (distance, distance/03.393427) +(46.37236) F +(78) F];
82 )
83
84 // These two aren't tilings but simple spiral patterns done by my 12 year old
85 // son Morgan that really need the warning from "Fractal Creations" about
86 // color cycling introducing hypnotic states.
87
88 ruleset ( // by Morgan Savage
89 // Try order 13 and color cycle in both 256 and 16 color modes
90
91 Vertigo(n) => attr (delta, 360/46) X, n;
92 X => XF+ attr (distance, distance*0.9997) X;
93 )
94
95 ruleset ( // by Morgan Savage
96 // Try order 13 and color cycle in both 256 and 16 color modes
97
98 Vertigo1(n) => attr (delta, 360/49) X, n;
99 X => XF+ attr (distance, distance*0.9997) X;
100 )
101