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Annotated edit history of petri(1) version 1, including all changes. View license author blame.
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1 perry 1 XScreenSaver
2 !!!XScreenSaver
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 OPTIONS
7 ENVIRONMENT
8 X RESOURCES
9 BUGS
10 SEE ALSO
11 COPYRIGHT
12 AUTHOR
13 ----
14 !!NAME
15
16
17 petri - simulates mold growing in a petri dish
18 !!SYNOPSIS
19
20
21 __petri__ [[-display ''host:display.screen'']
22 [[-foreground ''color''] [[-background ''color'']
23 [[-window] [[-root] [[-mono] [[-install] [[-visual ''visual'']
24 [[-delay ''microseconds''] [[-size ''integer'']
25 [[-mem-throttle ''amount''] [[-count ''integer'']
26 [[-originalcolors] [[-diaglim ''real''] [[-anychan
27 ''real''] [[-minorchan ''real''] [[-instantdeathchan
28 ''real''] [[-minlifespeed ''real''] [[-maxlifespeed
29 ''real''] [[-mindeathspeed ''real''] [[-maxdeathspeed
30 ''real''] [[-minlifespan ''integer''] [[-maxlifespan
31 ''integer'']
32 !!DESCRIPTION
33
34
35 ''petri'' simulates mold growing in a petri dish via a
36 state-heavy grid of automata (vaguely like Conway's Life,
37 only with much more state per cell).
38 !!OPTIONS
39
40
41 ''petri'' accepts the following options:
42
43
44 __-window__
45
46
47 Draw on a newly-created window. This is the
48 default.
49
50
51 __-root__
52
53
54 Draw on the root window.
55
56
57 __-mono__
58
59
60 If on a color display, pretend we're on a monochrome
61 display.
62
63
64 __-install__
65
66
67 Install a private colormap for the window.
68
69
70 __-visual__ ''visual''
71
72
73 Which visual to use. Legal values are the name of a visual
74 class, or the id number (decimal or hex) of a specific
75 visual.
76
77
78 __-delay__ ''microseconds''
79
80
81 The interframe delay, in microseconds. Defaults to 10000,
82 resource ''delay''.
83
84
85 __-size__ ''integer''
86
87
88 The size of a cell in pixels. Defaults to 4, resource
89 ''size''.
90
91
92 __-mem-throttle__ ''amount''
93
94
95 The maximum amount of memory to consume, specified either in
96 megabytes (suffix
97 memThrottle''.
98
99
100 __-count__ ''integer''
101
102
103 How many different varieties of mold to grow (including
104 Black Death). Defaults to 8, resource
105 ''count''.
106
107
108 __-originalcolors__
109
110
111 If specified, indicates that the colors used should be the
112 artist's original choices (a fixed set of primary and
113 secondary colors). In this case, count must be 8 or less.
114 Defaults to not specified (i.e., false), resource
115 ''originalcolors''.
116
117
118 __-diaglim__ ''real''
119
120
121 The age limit for diagonal growth as a multiplier of
122 orthogonal growth (range 1..2). 1 means square growth, 1.414
123 (i.e., ''sqrt(2)'') means approximately circular growth,
124 2 means diamond growth. Defaults to 1.414, resource
125 ''diaglim''.
126
127
128 __-anychan__ ''real''
129
130
131 The chance (range 0..1) that at each iteration, one or more
132 new cells will be born. Defaults to 0.0015, resource
133 ''anychan''.
134
135
136 __-minorchan__ ''real''
137
138
139 The chance (range 0..1) that, given that new cells will be
140 born, that only two will be added (hence being a minor cell
141 birth event). Defaults to 0.5, resource
142 ''minorchan''.
143
144
145 __-instantdeathchan__ ''real''
146
147
148 The chance (range 0..1) that, given that death and
149 destruction will happen, that instead of using Black Death
150 cells, death will come instantaneously. Defaults to 0.2,
151 resource ''instantdeathchan''.
152
153
154 __-minlifespeed__ ''real''
155
156
157 The minimum speed for living cells as a fraction of the
158 maximum possible speed (range 0..1). Defaults to 0.04,
159 resource ''minlifespeed''.
160
161
162 __-maxlifespeed__ ''real''
163
164
165 The maximum speed for living cells as a fraction of the
166 maximum possible speed (range 0..1). Defaults to 0.13,
167 resource ''maxlifespeed''.
168
169
170 __-mindeathspeed__ ''real''
171
172
173 The minimum speed for Black Death cells as a fraction of the
174 maximum possible speed (range 0..1). Defaults to 0.42,
175 resource ''mindeathspeed''.
176
177
178 __-maxdeathspeed__ ''real''
179
180
181 The maximum speed for Black Death cells as a fraction of the
182 maximum possible speed (range 0..1). Defaults to 0.46,
183 resource ''maxdeathspeed''.
184
185
186 __-minlifespan__ ''integer''
187
188
189 The minimum lifespan for a colony, in iterations, before
190 Black Death comes. Defaults to 500, resource
191 ''minlifespan''.
192
193
194 __-maxlifespan__ ''integer''
195
196
197 The maximum lifespan for a colony, in iterations, before
198 Black Death comes. Defaults to 1500, resource
199 ''maxlifespan''.
200 !!ENVIRONMENT
201
202
203 __DISPLAY__
204
205
206 to get the default host and display number.
207
208
209 __XENVIRONMENT__
210
211
212 to get the name of a resource file that overrides the global
213 resources stored in the RESOURCE_MANAGER
214 property.
215 !!X RESOURCES
216
217
218 There are resource equivalents for each option, noted
219 above.
220 !!BUGS
221
222
223 There are no known bugs in ''petri'' as of this
224 writing.
225 !!SEE ALSO
226
227
228 xscreensaver(1)
229 !!COPYRIGHT
230
231
232 Copyright 1992-2000 by Dan Bornstein.
233
234
235 Permission to use, copy, modify, distribute, and sell this
236 software and its documentation for any purpose is hereby
237 granted without fee, provided that the above copyright
238 notice appear in all copies and that both that copyright
239 notice and this permission notice appear in supporting
240 documentation. No representations are made about the
241 suitability of this software for any purpose. It is provided
242 !!AUTHOR
243
244
245 Dan Bornstein
246 ----
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