-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathindex.html
More file actions
521 lines (502 loc) · 18.9 KB
/
index.html
File metadata and controls
521 lines (502 loc) · 18.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<!-- 2017-04-17 Mon 16:01 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title></title>
<meta name="generator" content="Org mode" />
<meta name="author" content="benrudgers" />
<style type="text/css">
<!--/*--><![CDATA[/*><!--*/
.title { text-align: center;
margin-bottom: .2em; }
.subtitle { text-align: center;
font-size: medium;
font-weight: bold;
margin-top:0; }
.todo { font-family: monospace; color: red; }
.done { font-family: monospace; color: green; }
.priority { font-family: monospace; color: orange; }
.tag { background-color: #eee; font-family: monospace;
padding: 2px; font-size: 80%; font-weight: normal; }
.timestamp { color: #bebebe; }
.timestamp-kwd { color: #5f9ea0; }
.org-right { margin-left: auto; margin-right: 0px; text-align: right; }
.org-left { margin-left: 0px; margin-right: auto; text-align: left; }
.org-center { margin-left: auto; margin-right: auto; text-align: center; }
.underline { text-decoration: underline; }
#postamble p, #preamble p { font-size: 90%; margin: .2em; }
p.verse { margin-left: 3%; }
pre {
border: 1px solid #ccc;
box-shadow: 3px 3px 3px #eee;
padding: 8pt;
font-family: monospace;
overflow: auto;
margin: 1.2em;
}
pre.src {
position: relative;
overflow: visible;
padding-top: 1.2em;
}
pre.src:before {
display: none;
position: absolute;
background-color: white;
top: -10px;
right: 10px;
padding: 3px;
border: 1px solid black;
}
pre.src:hover:before { display: inline;}
/* Languages per Org manual */
pre.src-asymptote:before { content: 'Asymptote'; }
pre.src-awk:before { content: 'Awk'; }
pre.src-C:before { content: 'C'; }
/* pre.src-C++ doesn't work in CSS */
pre.src-clojure:before { content: 'Clojure'; }
pre.src-css:before { content: 'CSS'; }
pre.src-D:before { content: 'D'; }
pre.src-ditaa:before { content: 'ditaa'; }
pre.src-dot:before { content: 'Graphviz'; }
pre.src-calc:before { content: 'Emacs Calc'; }
pre.src-emacs-lisp:before { content: 'Emacs Lisp'; }
pre.src-fortran:before { content: 'Fortran'; }
pre.src-gnuplot:before { content: 'gnuplot'; }
pre.src-haskell:before { content: 'Haskell'; }
pre.src-java:before { content: 'Java'; }
pre.src-js:before { content: 'Javascript'; }
pre.src-latex:before { content: 'LaTeX'; }
pre.src-ledger:before { content: 'Ledger'; }
pre.src-lisp:before { content: 'Lisp'; }
pre.src-lilypond:before { content: 'Lilypond'; }
pre.src-lua:before { content: 'Lua'; }
pre.src-matlab:before { content: 'MATLAB'; }
pre.src-mscgen:before { content: 'Mscgen'; }
pre.src-ocaml:before { content: 'Objective Caml'; }
pre.src-octave:before { content: 'Octave'; }
pre.src-org:before { content: 'Org mode'; }
pre.src-oz:before { content: 'OZ'; }
pre.src-plantuml:before { content: 'Plantuml'; }
pre.src-processing:before { content: 'Processing.js'; }
pre.src-python:before { content: 'Python'; }
pre.src-R:before { content: 'R'; }
pre.src-ruby:before { content: 'Ruby'; }
pre.src-sass:before { content: 'Sass'; }
pre.src-scheme:before { content: 'Scheme'; }
pre.src-screen:before { content: 'Gnu Screen'; }
pre.src-sed:before { content: 'Sed'; }
pre.src-sh:before { content: 'shell'; }
pre.src-sql:before { content: 'SQL'; }
pre.src-sqlite:before { content: 'SQLite'; }
/* additional languages in org.el's org-babel-load-languages alist */
pre.src-forth:before { content: 'Forth'; }
pre.src-io:before { content: 'IO'; }
pre.src-J:before { content: 'J'; }
pre.src-makefile:before { content: 'Makefile'; }
pre.src-maxima:before { content: 'Maxima'; }
pre.src-perl:before { content: 'Perl'; }
pre.src-picolisp:before { content: 'Pico Lisp'; }
pre.src-scala:before { content: 'Scala'; }
pre.src-shell:before { content: 'Shell Script'; }
pre.src-ebnf2ps:before { content: 'ebfn2ps'; }
/* additional language identifiers per "defun org-babel-execute"
in ob-*.el */
pre.src-cpp:before { content: 'C++'; }
pre.src-abc:before { content: 'ABC'; }
pre.src-coq:before { content: 'Coq'; }
pre.src-groovy:before { content: 'Groovy'; }
/* additional language identifiers from org-babel-shell-names in
ob-shell.el: ob-shell is the only babel language using a lambda to put
the execution function name together. */
pre.src-bash:before { content: 'bash'; }
pre.src-csh:before { content: 'csh'; }
pre.src-ash:before { content: 'ash'; }
pre.src-dash:before { content: 'dash'; }
pre.src-ksh:before { content: 'ksh'; }
pre.src-mksh:before { content: 'mksh'; }
pre.src-posh:before { content: 'posh'; }
/* Additional Emacs modes also supported by the LaTeX listings package */
pre.src-ada:before { content: 'Ada'; }
pre.src-asm:before { content: 'Assembler'; }
pre.src-caml:before { content: 'Caml'; }
pre.src-delphi:before { content: 'Delphi'; }
pre.src-html:before { content: 'HTML'; }
pre.src-idl:before { content: 'IDL'; }
pre.src-mercury:before { content: 'Mercury'; }
pre.src-metapost:before { content: 'MetaPost'; }
pre.src-modula-2:before { content: 'Modula-2'; }
pre.src-pascal:before { content: 'Pascal'; }
pre.src-ps:before { content: 'PostScript'; }
pre.src-prolog:before { content: 'Prolog'; }
pre.src-simula:before { content: 'Simula'; }
pre.src-tcl:before { content: 'tcl'; }
pre.src-tex:before { content: 'TeX'; }
pre.src-plain-tex:before { content: 'Plain TeX'; }
pre.src-verilog:before { content: 'Verilog'; }
pre.src-vhdl:before { content: 'VHDL'; }
pre.src-xml:before { content: 'XML'; }
pre.src-nxml:before { content: 'XML'; }
/* add a generic configuration mode; LaTeX export needs an additional
(add-to-list 'org-latex-listings-langs '(conf " ")) in .emacs */
pre.src-conf:before { content: 'Configuration File'; }
table { border-collapse:collapse; }
caption.t-above { caption-side: top; }
caption.t-bottom { caption-side: bottom; }
td, th { vertical-align:top; }
th.org-right { text-align: center; }
th.org-left { text-align: center; }
th.org-center { text-align: center; }
td.org-right { text-align: right; }
td.org-left { text-align: left; }
td.org-center { text-align: center; }
dt { font-weight: bold; }
.footpara { display: inline; }
.footdef { margin-bottom: 1em; }
.figure { padding: 1em; }
.figure p { text-align: center; }
.inlinetask {
padding: 10px;
border: 2px solid gray;
margin: 10px;
background: #ffffcc;
}
#org-div-home-and-up
{ text-align: right; font-size: 70%; white-space: nowrap; }
textarea { overflow-x: auto; }
.linenr { font-size: smaller }
.code-highlighted { background-color: #ffff00; }
.org-info-js_info-navigation { border-style: none; }
#org-info-js_console-label
{ font-size: 10px; font-weight: bold; white-space: nowrap; }
.org-info-js_search-highlight
{ background-color: #ffff00; color: #000000; font-weight: bold; }
.org-svg { width: 90%; }
/*]]>*/-->
</style>
<script type="text/javascript">
/*
@licstart The following is the entire license notice for the
JavaScript code in this tag.
Copyright (C) 2012-2013 Free Software Foundation, Inc.
The JavaScript code in this tag is free software: you can
redistribute it and/or modify it under the terms of the GNU
General Public License (GNU GPL) as published by the Free Software
Foundation, either version 3 of the License, or (at your option)
any later version. The code is distributed WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
As additional permission under GNU GPL version 3 section 7, you
may distribute non-source (e.g., minimized or compacted) forms of
that code without the copy of the GNU GPL normally required by
section 4, provided you include this license notice and a URL
through which recipients can access the Corresponding Source.
@licend The above is the entire license notice
for the JavaScript code in this tag.
*/
<!--/*--><![CDATA[/*><!--*/
function CodeHighlightOn(elem, id)
{
var target = document.getElementById(id);
if(null != target) {
elem.cacheClassElem = elem.className;
elem.cacheClassTarget = target.className;
target.className = "code-highlighted";
elem.className = "code-highlighted";
}
}
function CodeHighlightOff(elem, id)
{
var target = document.getElementById(id);
if(elem.cacheClassElem)
elem.className = elem.cacheClassElem;
if(elem.cacheClassTarget)
target.className = elem.cacheClassTarget;
}
/*]]>*///-->
</script>
</head>
<body>
<div id="content">
<div id="table-of-contents">
<h2>Table of Contents</h2>
<div id="text-table-of-contents">
<ul>
<li><a href="#orgf7c5e9e">1. Program purpose</a>
<ul>
<li><a href="#orgde690a0">1.1. Program Outline</a></li>
<li><a href="#orgce10704">1.2. Base formula</a></li>
<li><a href="#org9e523e0">1.3. Constraint Network Approach</a></li>
</ul>
</li>
<li><a href="#org09b57e3">2. Objects?</a>
<ul>
<li><a href="#org6b84da1">2.1. Light</a></li>
<li><a href="#org0f67364">2.2. Camera</a></li>
<li><a href="#org7bcacb5">2.3. Scene</a>
<ul>
<li><a href="#org030a9cc">2.3.1. Light Value</a></li>
<li><a href="#orgf00b01f">2.3.2. Subject</a></li>
<li><a href="#org72abe91">2.3.3. Foreground</a></li>
<li><a href="#orgb6f39dd">2.3.4. Background</a></li>
</ul>
</li>
<li><a href="#orgdaa3d69">2.4. World   <span class="tag"><span class="TODO">TODO</span></span></a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="outline-container-orgf7c5e9e" class="outline-2">
<h2 id="orgf7c5e9e"><span class="section-number-2">1</span> Program purpose</h2>
<div class="outline-text-2" id="text-1">
<p>
The purpose of the program is to provide a flexible way of estimating the correct settings of a photographic speed light and DSLR camera for a simple scene and likewise estimate the correct construction of a scene given the settings of a speedlight and camera.
</p>
</div>
<div id="outline-container-orgde690a0" class="outline-3">
<h3 id="orgde690a0"><span class="section-number-3">1.1</span> Program Outline</h3>
<div class="outline-text-3" id="text-1-1">
<div class="org-src-container">
<pre class="src src-smalltalk"> "off-camera-light.st"
"Estimates the setting for using a camera and speed light or conversely estimates the necessary scene parameters based on camera and speed light settings"
Namespace current: OffCameraLight [
<<light-value>>
<<camera>>
<<light>>
<<subject>>
<<scene>>
]
</pre>
</div>
<p>
Perhaps the one of the interesting features of this program is that it uses GNU Smalltalk's namespaces. The reason I find it interesting is that literate programming allows the use of namespace while still writing code that is <i>right justified</i> in the editor. By which I mean that the logical nesting of namespace contents wrapped by <code>[...]</code> does not result in redundant indentation when editing the code blocks. For me, having code indented off the left margin when the context for the indentation is irrelevant is ergonomically poor. It bothered me when writing Racket Modules and I prefer Common Lisp's <code>(in-package ...)</code> declarative syntax to explicit nesting. YMMV.
</p>
</div>
</div>
<div id="outline-container-orgce10704" class="outline-3">
<h3 id="orgce10704"><span class="section-number-3">1.2</span> Base formula</h3>
<div class="outline-text-3" id="text-1-2">
<p>
Working distance at full illumination equals light rating divided by f-stop at ISO 100.
</p>
<p>
working<sub>distance</sub> = (rating * (log<sub>2</sub>(ISO/100) + 1)) / f-stop.
</p>
<p>
rating = base power / power setting
</p>
</div>
</div>
<div id="outline-container-org9e523e0" class="outline-3">
<h3 id="org9e523e0"><span class="section-number-3">1.3</span> Constraint Network Approach</h3>
<div class="outline-text-3" id="text-1-3">
<p>
Given that the goal is to establish a two way relationship circle <b>light <-> camera <-> scene <-> light</b> this seems like a problem for constraint networks.
</p>
</div>
</div>
</div>
<div id="outline-container-org09b57e3" class="outline-2">
<h2 id="org09b57e3"><span class="section-number-2">2</span> Objects?</h2>
<div class="outline-text-2" id="text-2">
</div><div id="outline-container-org6b84da1" class="outline-3">
<h3 id="org6b84da1"><span class="section-number-3">2.1</span> Light</h3>
<div class="outline-text-3" id="text-2-1">
<div class="org-src-container">
<pre class="src src-smalltalk" id="orgf1ae0c9">Object subclass: Light [
"A class to model a speedlight state."
| rating power_setting |
guide_number [
"Get the rating of a speedlight."
^rating.
]
guide_number: aDistance [
"Set the rating of a speedlight."
rating := aDistance.
]
power [
"Get the power setting of the speedlight."
^power_setting.
]
power: aNumber [
"Get the power setting of the speedlight."
power_setting := aNumber.
]
]
</pre>
</div>
</div>
</div>
<div id="outline-container-org0f67364" class="outline-3">
<h3 id="org0f67364"><span class="section-number-3">2.2</span> Camera</h3>
<div class="outline-text-3" id="text-2-2">
<div class="org-src-container">
<pre class="src src-smalltalk" id="org9fac9e4">Object subclass: Camera [
"The basis for variable names is Manual of Photography 10th edition.
n is relative aperture
t is shutter speed
s is sensitivity based"
| n t s |
<comment: 'A class for describing the state of a camera.'>
<<camera-init>>
aperture [
"Get the aperture value."
^n.
]
aperture: stop [
"Set the camera's aperture."
n := stop.
]
shutter [
"Get camera's shutter speed."
^t.
]
shutter: time [
"Set camera's shutter speed."
t := time.
]
iso [
"Get camera's sensitivity setting."
^s.
]
iso: sensitivity [
"Set camera's sensitivity setting."
s := sensitivity.
]
eV [
| sunny16Ev aperture shutter iso rawEv |
"Calculate the Exposure Value."
sunny16Ev := 8.
aperture := n squared log: 2.
shutter := 100 / (1/t) log: 2.
iso := (s / 100) log: 2.
rawEv := aperture + shutter + iso.
^'Not yet implemented'.
]
sunny16 [
"Calculate the number of stops away from Sunny 16 settings."
^eV - 15.
]
]
</pre>
</div>
<p>
Create and initialize a camera. Code ends with <code>yourself</code> to return the object rather than the value of the last expression.
</p>
<div class="org-src-container">
<pre class="src src-smalltalk" id="orgf664688">Camera class >> aperture: stop shutter: time iso: sensitivity [
^(self new)
aperture: stop;
shutter: time;
iso: sensitivity;
yourself.
]
</pre>
</div>
</div>
</div>
<div id="outline-container-org7bcacb5" class="outline-3">
<h3 id="org7bcacb5"><span class="section-number-3">2.3</span> Scene</h3>
<div class="outline-text-3" id="text-2-3">
<p>
A scene for our purpose has a camera, speedlight, a subject, and a light value.
</p>
<div class="org-src-container">
<pre class="src src-smalltalk" id="org702c4e2">Object subclass: Scene [
| subject lV foreground background |
"A container for all the components of a photograph (sort of)."
]
</pre>
</div>
</div>
<div id="outline-container-org030a9cc" class="outline-4">
<h4 id="org030a9cc"><span class="section-number-4">2.3.1</span> Light Value</h4>
<div class="outline-text-4" id="text-2-3-1">
<p>
The light value in a scene is a scalar of the reflected light reaching the camera (on average). In this project it is implemented as a "global" variable of the namespace <code>OffCameraLight</code>.
</p>
<div class="org-src-container">
<pre class="src src-smalltalk" id="orgc7bf042">"The values and descriptions are from http://www.crakephoto.com/reference/index.html"
<comment: 'A dictionary associating light values with scene descriptions'>
LightValue := Dictionary new.
LightValue at: 17 put: 'Rarely seen in nature'.
LightValue at: 16 put: 'Bright sunlight off of sand or snow'.
LightValue at: 15 put: 'Bright hazy sunlight'.
LightValue at: 14 put: 'Weak hazy sunlight'.
LightValue at: 13 put: 'Bright cloudy day'.
LightValue at: 12 put: 'Overcast day'.
LightValue at: 11 put: 'Shade on a bright day or during sunrise/set'.
LightValue at: 10 put: 'Dusk or dawn'.
LightValue at: 9 put: 'Late dusk or early dawn'.
LightValue at: 8 put: 'Times square at night '.
LightValue at: 7 put: 'Brightly lit street '.
LightValue at: 6 put: 'Bright interior '.
LightValue at: 5 put: 'Average interior or auditorium'.
LightValue at: 4 put: 'Christmas or candle lights'.
LightValue at: 3 put: 'Fireworks (emitted)'.
LightValue at: 2 put: 'Lightning from a distance (emitted)'.
LightValue at: 1 put: 'City skyline at night (emitted)'.
LightValue at: 0 put: 'Dim ambient light'.
LightValue at: -1 put: 'Really dim ambient light'.
LightValue at: -2 put: 'Full moon off of sand or snow'.
LightValue at: -3 put: 'Full moon'.
LightValue at: -4 put: 'Half moon'.
LightValue at: -5 put: 'Crescent moon'.
LightValue at: -6 put: 'Starlight'.
</pre>
</div>
</div>
</div>
<div id="outline-container-orgf00b01f" class="outline-4">
<h4 id="orgf00b01f"><span class="section-number-4">2.3.2</span> Subject</h4>
<div class="outline-text-4" id="text-2-3-2">
<div class="org-src-container">
<pre class="src src-smalltalk" id="orgc2d04e3">Object subclass: Subject [
| d |
"A class to describe a photographic subject."
distance [
"Get the distance to a subject."
^d.
]
distance: aNumber [
"Set the distance to a subject."
d := aNumber.
]
]
</pre>
</div>
</div>
</div>
<div id="outline-container-org72abe91" class="outline-4">
<h4 id="org72abe91"><span class="section-number-4">2.3.3</span> Foreground</h4>
</div>
<div id="outline-container-orgb6f39dd" class="outline-4">
<h4 id="orgb6f39dd"><span class="section-number-4">2.3.4</span> Background</h4>
</div>
</div>
<div id="outline-container-orgdaa3d69" class="outline-3">
<h3 id="orgdaa3d69"><span class="section-number-3">2.4</span> World   <span class="tag"><span class="TODO">TODO</span></span></h3>
<div class="outline-text-3" id="text-2-4">
<div class="org-src-container">
<pre class="src src-smalltalk" id="orgcb63861">Object subclass: world [
| scene camera light |
"A class to simulate a photographic environment."
]
</pre>
</div>
</div>
</div>
</div>
</div>
<div id="postamble" class="status">
<p class="author">Author: benrudgers</p>
<p class="date">Created: 2017-04-17 Mon 16:01</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
</div>
</body>
</html>