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
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
|
// SPDX-License-Identifier: GPL-2.0
/* planner.c
*
* code that allows us to plan future dives
*
* (c) Dirk Hohndel 2013
*/
#include <assert.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include "dive.h"
#include "deco.h"
#include "divelist.h"
#include "planner.h"
#include "gettext.h"
#include "libdivecomputer/parser.h"
#include "qthelper.h"
#include "version.h"
int diveplan_duration(struct diveplan *diveplan)
{
struct divedatapoint *dp = diveplan->dp;
int duration = 0;
while(dp) {
if (dp->time > duration)
duration = dp->time;
dp = dp->next;
}
return (duration + 30) / 60;
}
/* Add the icd results of one trimix gas change to the dive plan html buffer. Two rows are added to the table, one
* indicating fractions of gas, the other indication partial pressures of gas. This function makes use of the
* icd_data structure that was filled with information by the function isobaric_counterdiffusion().
* Parameters: 1) Pointer to the output buffer position at which writing should start.
* 2) The size of the part of the unused output buffer that remains unused.
* 3) The data structure containing icd calculation results: icdvalues.
* 4) A boolean value indicating whether a table header should be written before the data. Only during 1st call.
* 5) Pointers to gas mixes in the gas change: gas-from and gas-to.
* Returns: The size of the output buffer that has been used after the new results have been added.
*/
int add_icd_entry(char *icdbuffer, unsigned int maxsize, struct icd_data *icdvalues, bool printheader, int time_seconds, int ambientpressure_mbar, struct gasmix *gas_from, struct gasmix *gas_to)
{
int len = 0;
if (printheader) { // Create a table description and a table header if no icd data have been written yet.
len = snprintf(icdbuffer + len, maxsize - len, "<div>%s:",
translate("gettextFromC","Isobaric counterdiffusion information"));
len += snprintf(icdbuffer + len, maxsize - len, "<table><tr><td align='left'><b>%s</b></td>",
translate("gettextFromC", "runtime"));
len += snprintf(icdbuffer + len, maxsize - len, "<td align='center'><b>%s</b></td>",
translate("gettextFromC", "gaschange"));
len += snprintf(icdbuffer + len, maxsize - len, "<td style='padding-left: 15px;'><b>%s</b></td>",
translate("gettextFromC", "ΔHe"));
len += snprintf(icdbuffer + len, maxsize - len, "<td style='padding-left: 20px;'><b>%s</b></td>",
translate("gettextFromC", "ΔN₂"));
len += snprintf(icdbuffer + len, maxsize - len, "<td style='padding-left: 10px;'><b>%s</b></td></tr>",
translate("gettextFromC", "max ΔN₂"));
} // Add one entry to the icd table:
len += snprintf_loc(icdbuffer + len, maxsize - len,
"<tr><td rowspan='2' style= 'vertical-align:top;'>%3d%s</td>"
"<td rowspan=2 style= 'vertical-align:top;'>%s➙",
(time_seconds + 30) / 60, translate("gettextFromC", "min"), gasname(gas_from));
len += snprintf_loc(icdbuffer + len, maxsize - len,
"%s</td><td style='padding-left: 10px;'>%+5.1f%%</td>"
"<td style= 'padding-left: 15px; color:%s;'>%+5.1f%%</td>"
"<td style='padding-left: 15px;'>%+5.1f%%</td></tr>"
"<tr><td style='padding-left: 10px;'>%+5.2f%s</td>"
"<td style='padding-left: 15px; color:%s;'>%+5.2f%s</td>"
"<td style='padding-left: 15px;'>%+5.2f%s</td></tr>",
gasname(gas_to), icdvalues->dHe / 10.0,
((5 * icdvalues->dN2) > -icdvalues->dHe) ? "red" : "#383838", icdvalues->dN2 / 10.0 , 0.2 * (-icdvalues->dHe / 10.0),
ambientpressure_mbar * icdvalues->dHe / 1e6f, translate("gettextFromC", "bar"), ((5 * icdvalues->dN2) > -icdvalues->dHe) ? "red" : "#383838",
ambientpressure_mbar * icdvalues->dN2 / 1e6f, translate("gettextFromC", "bar"),
ambientpressure_mbar * -icdvalues->dHe / 5e6f, translate("gettextFromC", "bar"));
return len;
}
void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool show_disclaimer, int error)
{
const unsigned int sz_buffer = 2000000;
const unsigned int sz_temp = 100000;
const unsigned int sz_icdbuf = 10000;
char *buffer = (char *)malloc(sz_buffer);
char *temp = (char *)malloc(sz_temp);
char *icdbuffer = (char *)malloc(sz_icdbuf);
const char *deco, *segmentsymbol;
static char buf[1000];
int len, lastdepth = 0, lasttime = 0, lastsetpoint = -1, newdepth = 0, lastprintdepth = 0, lastprintsetpoint = -1;
int icdlen = 0;
struct gasmix lastprintgasmix = {{ -1 }, { -1 }};
struct divedatapoint *dp = diveplan->dp;
bool plan_verbatim = prefs.verbatim_plan;
bool plan_display_runtime = prefs.display_runtime;
bool plan_display_duration = prefs.display_duration;
bool plan_display_transitions = prefs.display_transitions;
bool gaschange_after = !plan_verbatim;
bool gaschange_before;
bool lastentered = true;
bool icdwarning = false, icdtableheader = true;
struct divedatapoint *nextdp = NULL;
struct divedatapoint *lastbottomdp = NULL;
struct icd_data icdvalues;
if (decoMode() == VPMB) {
deco = translate("gettextFromC", "VPM-B");
} else {
deco = translate("gettextFromC", "BUHLMANN");
}
snprintf(buf, sizeof(buf), translate("gettextFromC", "DISCLAIMER / WARNING: THIS IS A NEW IMPLEMENTATION OF THE %s "
"ALGORITHM AND A DIVE PLANNER IMPLEMENTATION BASED ON THAT WHICH HAS "
"RECEIVED ONLY A LIMITED AMOUNT OF TESTING. WE STRONGLY RECOMMEND NOT TO "
"PLAN DIVES SIMPLY BASED ON THE RESULTS GIVEN HERE."), deco);
disclaimer = buf;
if (!dp)
goto finished;
if (error) {
snprintf(temp, sz_temp, "%s",
translate("gettextFromC", "Decompression calculation aborted due to excessive time"));
snprintf(buffer, sz_buffer, "<span style='color: red;'>%s </span> %s<br>",
translate("gettextFromC", "Warning:"), temp);
dive->notes = strdup(buffer);
goto finished;
}
len = show_disclaimer ? snprintf(buffer, sz_buffer, "<div><b>%s</b><br></div>", disclaimer) : 0;
if (diveplan->surface_interval < 0) {
len += snprintf(buffer + len, sz_buffer - len, "<div><b>%s (%s) %s<br>",
translate("gettextFromC", "Subsurface"),
subsurface_canonical_version(),
translate("gettextFromC", "dive plan</b> (overlapping dives detected)"));
dive->notes = strdup(buffer);
goto finished;
} else if (diveplan->surface_interval >= 48 * 60 *60) {
const char *current_date = get_current_date();
len += snprintf(buffer + len, sz_buffer - len, "<div><b>%s (%s) %s %s</b><br>",
translate("gettextFromC", "Subsurface"),
subsurface_canonical_version(),
translate("gettextFromC", "dive plan</b> created on"),
current_date);
free((void *)current_date);
} else {
const char *current_date = get_current_date();
len += snprintf_loc(buffer + len, sz_buffer - len, "<div><b>%s (%s) %s %d:%02d) %s %s<br>",
translate("gettextFromC", "Subsurface"),
subsurface_canonical_version(),
translate("gettextFromC", "dive plan</b> (surface interval "),
FRACTION(diveplan->surface_interval / 60, 60),
translate("gettextFromC", "created on"),
current_date);
free((void *)current_date);
}
if (prefs.display_variations && decoMode() != RECREATIONAL)
len += snprintf_loc(buffer + len, sz_buffer - len, translate("gettextFromC", "Runtime: %dmin%s"),
diveplan_duration(diveplan), "VARIATIONS<br></div>");
else
len += snprintf_loc(buffer + len, sz_buffer - len, translate("gettextFromC", "Runtime: %dmin<br></div>"),
diveplan_duration(diveplan));
if (!plan_verbatim) {
len += snprintf(buffer + len, sz_buffer - len, "<table><thead><tr><th></th><th>%s</th>",
translate("gettextFromC", "depth"));
if (plan_display_duration)
len += snprintf(buffer + len, sz_buffer - len, "<th style='padding-left: 10px;'>%s</th>",
translate("gettextFromC", "duration"));
if (plan_display_runtime)
len += snprintf(buffer + len, sz_buffer - len, "<th style='padding-left: 10px;'>%s</th>",
translate("gettextFromC", "runtime"));
len += snprintf(buffer + len, sz_buffer - len,
"<th style='padding-left: 10px; float: left;'>%s</th></tr></thead><tbody style='float: left;'>",
translate("gettextFromC", "gas"));
}
do {
struct gasmix gasmix, newgasmix = {};
const char *depth_unit;
double depthvalue;
int decimals;
bool isascent = (dp->depth.mm < lastdepth);
nextdp = dp->next;
if (dp->time == 0)
continue;
gasmix = dive->cylinder[dp->cylinderid].gasmix;
depthvalue = get_depth_units(dp->depth.mm, &decimals, &depth_unit);
/* analyze the dive points ahead */
while (nextdp && nextdp->time == 0)
nextdp = nextdp->next;
if (nextdp)
newgasmix = dive->cylinder[nextdp->cylinderid].gasmix;
gaschange_after = (nextdp && (gasmix_distance(&gasmix, &newgasmix) || dp->setpoint != nextdp->setpoint));
gaschange_before = (gasmix_distance(&lastprintgasmix, &gasmix) || lastprintsetpoint != dp->setpoint);
/* do we want to skip this leg as it is devoid of anything useful? */
if (!dp->entered &&
nextdp &&
dp->depth.mm != lastdepth &&
nextdp->depth.mm != dp->depth.mm &&
!gaschange_before &&
!gaschange_after)
continue;
if ((dp->time - lasttime < 10 && lastdepth == dp->depth.mm) && !(gaschange_after && dp->next && dp->depth.mm != dp->next->depth.mm))
continue;
/* Store pointer to last entered datapoint for minimum gas calculation */
if (dp->entered && !nextdp->entered)
lastbottomdp = dp;
len = strlen(buffer);
if (plan_verbatim) {
/* When displaying a verbatim plan, we output a waypoint for every gas change.
* Therefore, we do not need to test for difficult cases that mean we need to
* print a segment just so we don't miss a gas change. This makes the logic
* to determine whether or not to print a segment much simpler than with the
* non-verbatim plan.
*/
if (dp->depth.mm != lastprintdepth) {
if (plan_display_transitions || dp->entered || !dp->next || (gaschange_after && dp->next && dp->depth.mm != nextdp->depth.mm)) {
if (dp->setpoint) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "%s to %.*f %s in %d:%02d min - runtime %d:%02u on %s (SP = %.1fbar)"),
dp->depth.mm < lastprintdepth ? translate("gettextFromC", "Ascend") : translate("gettextFromC", "Descend"),
decimals, depthvalue, depth_unit,
FRACTION(dp->time - lasttime, 60),
FRACTION(dp->time, 60),
gasname(&gasmix),
(double) dp->setpoint / 1000.0);
} else {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "%s to %.*f %s in %d:%02d min - runtime %d:%02u on %s"),
dp->depth.mm < lastprintdepth ? translate("gettextFromC", "Ascend") : translate("gettextFromC", "Descend"),
decimals, depthvalue, depth_unit,
FRACTION(dp->time - lasttime, 60),
FRACTION(dp->time, 60),
gasname(&gasmix));
}
len += snprintf(buffer + len, sz_buffer - len, "%s<br>", temp);
}
newdepth = dp->depth.mm;
lasttime = dp->time;
} else {
if ((nextdp && dp->depth.mm != nextdp->depth.mm) || gaschange_after) {
if (dp->setpoint) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "Stay at %.*f %s for %d:%02d min - runtime %d:%02u on %s (SP = %.1fbar)"),
decimals, depthvalue, depth_unit,
FRACTION(dp->time - lasttime, 60),
FRACTION(dp->time, 60),
gasname(&gasmix),
(double) dp->setpoint / 1000.0);
} else {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "Stay at %.*f %s for %d:%02d min - runtime %d:%02u on %s"),
decimals, depthvalue, depth_unit,
FRACTION(dp->time - lasttime, 60),
FRACTION(dp->time, 60),
gasname(&gasmix));
}
len += snprintf(buffer + len, sz_buffer - len, "%s<br>", temp);
newdepth = dp->depth.mm;
lasttime = dp->time;
}
}
} else {
/* When not displaying the verbatim dive plan, we typically ignore ascents between deco stops,
* unless the display transitions option has been selected. We output a segment if any of the
* following conditions are met.
* 1) Display transitions is selected
* 2) The segment was manually entered
* 3) It is the last segment of the dive
* 4) The segment is not an ascent, there was a gas change at the start of the segment and the next segment
* is a change in depth (typical deco stop)
* 5) There is a gas change at the end of the segment and the last segment was entered (first calculated
* segment if it ends in a gas change)
* 6) There is a gaschange after but no ascent. This should only occur when backgas breaks option is selected
* 7) It is an ascent ending with a gas change, but is not followed by a stop. As case 5 already matches
* the first calculated ascent if it ends with a gas change, this should only occur if a travel gas is
* used for a calculated ascent, there is a subsequent gas change before the first deco stop, and zero
* time has been allowed for a gas switch.
*/
if (plan_display_transitions || dp->entered || !dp->next ||
(nextdp && dp->depth.mm != nextdp->depth.mm) ||
(!isascent && gaschange_before && nextdp && dp->depth.mm != nextdp->depth.mm) ||
(gaschange_after && lastentered) || (gaschange_after && !isascent) ||
(isascent && gaschange_after && nextdp && dp->depth.mm != nextdp->depth.mm ) ||
(lastentered && !dp->entered)) {
// Print a symbol to indicate whether segment is an ascent, descent, constant depth (user entered) or deco stop
if (isascent)
segmentsymbol = "➚"; // up-right arrow for ascent
else if (dp->depth.mm > lastdepth)
segmentsymbol = "➘"; // down-right arrow for descent
else if (dp->entered)
segmentsymbol = "➙"; // right arrow for entered entered segment at constant depth
else
segmentsymbol = "-"; // minus sign (a.k.a. horizontal line) for deco stop
len += snprintf(buffer + len, sz_buffer - len, "<tr><td style='padding-left: 10px; float: right;'>%s</td>", segmentsymbol);
snprintf(temp, sz_temp, translate("gettextFromC", "%3.0f%s"), depthvalue, depth_unit);
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
if (plan_display_duration) {
snprintf(temp, sz_temp, translate("gettextFromC", "%3dmin"), (dp->time - lasttime + 30) / 60);
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
}
if (plan_display_runtime) {
snprintf(temp, sz_temp, translate("gettextFromC", "%3dmin"), (dp->time + 30) / 60);
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
}
/* Normally a gas change is displayed on the stopping segment, so only display a gas change at the end of
* an ascent segment if it is not followed by a stop
*/
if ((isascent || dp->entered) && gaschange_after && dp->next && nextdp && (dp->depth.mm != nextdp->depth.mm || nextdp->entered)) {
if (dp->setpoint) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "(SP = %.1fbar)"), (double) nextdp->setpoint / 1000.0);
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; color: red; float: left;'><b>%s %s</b></td>",
gasname(&newgasmix), temp);
} else {
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; color: red; float: left;'><b>%s</b></td>",
gasname(&newgasmix));
if (isascent && (get_he(&lastprintgasmix) > 0)) { // For a trimix gas change on ascent, save ICD info if previous cylinder had helium
if (isobaric_counterdiffusion(&lastprintgasmix, &newgasmix, &icdvalues)) // Do icd calulations
icdwarning = true;
if (icdvalues.dN2 > 0) { // If the gas change involved helium as well as an increase in nitrogen..
icdlen += add_icd_entry(icdbuffer+icdlen, sz_icdbuf-icdlen, &icdvalues, icdtableheader, dp->time, depth_to_mbar(dp->depth.mm, dive), &lastprintgasmix, &newgasmix); // .. then print calculations to buffer.
icdtableheader = false;
}
}
}
lastprintsetpoint = nextdp->setpoint;
lastprintgasmix = newgasmix;
gaschange_after = false;
} else if (gaschange_before) {
// If a new gas has been used for this segment, now is the time to show it
if (dp->setpoint) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "(SP = %.1fbar)"), (double) dp->setpoint / 1000.0);
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; color: red; float: left;'><b>%s %s</b></td>",
gasname(&gasmix), temp);
} else {
len += snprintf(buffer + len, sz_buffer - len, "<td style='padding-left: 10px; color: red; float: left;'><b>%s</b></td>",
gasname(&gasmix));
if (get_he(&lastprintgasmix) > 0) { // For a trimix gas change, save ICD info if previous cylinder had helium
if (isobaric_counterdiffusion(&lastprintgasmix, &gasmix, &icdvalues)) // Do icd calculations
icdwarning = true;
if (icdvalues.dN2 > 0) { // If the gas change involved helium as well as an increase in nitrogen..
icdlen += add_icd_entry(icdbuffer+icdlen, sz_icdbuf-icdlen, &icdvalues, icdtableheader, lasttime, depth_to_mbar(dp->depth.mm, dive), &lastprintgasmix, &gasmix); // .. then print data to buffer.
icdtableheader = false;
}
}
}
// Set variables so subsequent iterations can test against the last gas printed
lastprintsetpoint = dp->setpoint;
lastprintgasmix = gasmix;
gaschange_after = false;
} else {
len += snprintf(buffer + len, sz_buffer - len, "<td> </td>");
}
len += snprintf(buffer + len, sz_buffer - len, "</tr>");
newdepth = dp->depth.mm;
lasttime = dp->time;
}
}
if (gaschange_after) {
// gas switch at this waypoint for verbatim
if (plan_verbatim) {
if (lastsetpoint >= 0) {
if (nextdp && nextdp->setpoint) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "Switch gas to %s (SP = %.1fbar)"), gasname(&newgasmix), (double) nextdp->setpoint / 1000.0);
} else {
snprintf(temp, sz_temp, translate("gettextFromC", "Switch gas to %s"), gasname(&newgasmix));
if ((isascent) && (get_he(&lastprintgasmix) > 0)) { // For a trimix gas change on ascent:
if (isobaric_counterdiffusion(&lastprintgasmix, &newgasmix, &icdvalues)) // Do icd calculations
icdwarning = true;
if (icdvalues.dN2 > 0) { // If the gas change involved helium as well as an increase in nitrogen..
icdlen += add_icd_entry(icdbuffer+icdlen, sz_icdbuf-icdlen, &icdvalues, icdtableheader, dp->time, depth_to_mbar(dp->depth.mm, dive), &lastprintgasmix, &newgasmix); // ... then print data to buffer.
icdtableheader = false;
}
}
}
len += snprintf(buffer + len, sz_buffer - len, "%s<br>", temp);
}
lastprintgasmix = newgasmix;
gaschange_after = false;
gasmix = newgasmix;
}
}
lastprintdepth = newdepth;
lastdepth = dp->depth.mm;
lastsetpoint = dp->setpoint;
lastentered = dp->entered;
} while ((dp = nextdp) != NULL);
if (!plan_verbatim)
len += snprintf(buffer + len, sz_buffer - len, "</tbody></table><br>");
/* Print the CNS and OTU next.*/
dive->cns = 0;
dive->maxcns = 0;
update_cylinder_related_info(dive);
snprintf(temp, sz_temp, "%s", translate("gettextFromC", "CNS"));
len += snprintf_loc(buffer + len, sz_buffer - len, "<div>%s: %i%%", temp, dive->cns);
snprintf(temp, sz_temp, "%s", translate("gettextFromC", "OTU"));
len += snprintf_loc(buffer + len, sz_buffer - len, "<br>%s: %i<br></div>", temp, dive->otu);
/* Print the settings for the diveplan next. */
if (decoMode() == BUEHLMANN) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "Deco model: Bühlmann ZHL-16C with GFLow = %d%% and GFHigh = %d%%"),
diveplan->gflow, diveplan->gfhigh);
} else if (decoMode() == VPMB){
int temp_len;
if (diveplan->vpmb_conservatism == 0)
temp_len = snprintf(temp, sz_temp, "%s", translate("gettextFromC", "Deco model: VPM-B at nominal conservatism"));
else
temp_len = snprintf_loc(temp, sz_temp, translate("gettextFromC", "Deco model: VPM-B at +%d conservatism"), diveplan->vpmb_conservatism);
if (diveplan->eff_gflow)
temp_len += snprintf_loc(temp + temp_len, sz_temp - temp_len, translate("gettextFromC", ", effective GF=%d/%d"), diveplan->eff_gflow,
diveplan->eff_gfhigh);
} else if (decoMode() == RECREATIONAL){
snprintf_loc(temp, sz_temp, translate("gettextFromC", "Deco model: Recreational mode based on Bühlmann ZHL-16B with GFLow = %d%% and GFHigh = %d%%"),
diveplan->gflow, diveplan->gfhigh);
}
len += snprintf(buffer + len, sz_buffer - len, "<div>%s<br>",temp);
const char *depth_unit;
int altitude = (int) get_depth_units((int) (log(1013.0 / diveplan->surface_pressure) * 7800000), NULL, &depth_unit);
len += snprintf_loc(buffer + len, sz_buffer - len, translate("gettextFromC", "ATM pressure: %dmbar (%d%s)<br></div>"),
diveplan->surface_pressure, altitude, depth_unit);
/* Get SAC values and units for printing it in gas consumption */
double bottomsacvalue, decosacvalue;
int sacdecimals;
const char* sacunit;
bottomsacvalue = get_volume_units(prefs.bottomsac, &sacdecimals, &sacunit);
decosacvalue = get_volume_units(prefs.decosac, NULL, NULL);
/* Reduce number of decimals from 1 to 0 for bar/min, keep 2 for cuft/min */
if (sacdecimals==1) sacdecimals--;
/* Print the gas consumption next.*/
if (dive->dc.divemode == CCR)
snprintf(temp, sz_temp, "%s", translate("gettextFromC", "Gas consumption (CCR legs excluded):"));
else
snprintf_loc(temp, sz_temp, "%s %.*f|%.*f%s/min):", translate("gettextFromC", "Gas consumption (based on SAC"),
sacdecimals, bottomsacvalue, sacdecimals, decosacvalue, sacunit);
len += snprintf(buffer + len, sz_buffer - len, "<div>%s<br>", temp);
/* Print gas consumption: This loop covers all cylinders */
for (int gasidx = 0; gasidx < MAX_CYLINDERS; gasidx++) {
double volume, pressure, deco_volume, deco_pressure, mingas_volume, mingas_pressure, mingas_d_pressure, mingas_depth;
const char *unit, *pressure_unit, *depth_unit;
char warning[1000] = "";
char mingas[1000] = "";
cylinder_t *cyl = &dive->cylinder[gasidx];
if (cylinder_none(cyl))
break;
volume = get_volume_units(cyl->gas_used.mliter, NULL, &unit);
deco_volume = get_volume_units(cyl->deco_gas_used.mliter, NULL, &unit);
if (cyl->type.size.mliter) {
int remaining_gas = lrint((double)cyl->end.mbar * cyl->type.size.mliter / 1000.0 / gas_compressibility_factor(&cyl->gasmix, cyl->end.mbar / 1000.0));
double deco_pressure_mbar = isothermal_pressure(&cyl->gasmix, 1.0, remaining_gas + cyl->deco_gas_used.mliter,
cyl->type.size.mliter) * 1000 - cyl->end.mbar;
deco_pressure = get_pressure_units(lrint(deco_pressure_mbar), &pressure_unit);
pressure = get_pressure_units(cyl->start.mbar - cyl->end.mbar, &pressure_unit);
/* Warn if the plan uses more gas than is available in a cylinder
* This only works if we have working pressure for the cylinder
* 10bar is a made up number - but it seemed silly to pretend you could breathe cylinder down to 0 */
if (cyl->end.mbar < 10000)
snprintf(warning, sizeof(warning), "<br> — <span style='color: red;'>%s </span> %s",
translate("gettextFromC", "Warning:"),
translate("gettextFromC", "this is more gas than available in the specified cylinder!"));
else
if (cyl->end.mbar / 1000.0 * cyl->type.size.mliter / gas_compressibility_factor(&cyl->gasmix, cyl->end.mbar / 1000.0)
< cyl->deco_gas_used.mliter)
snprintf(warning, sizeof(warning), "<br> — <span style='color: red;'>%s </span> %s",
translate("gettextFromC", "Warning:"),
translate("gettextFromC", "not enough reserve for gas sharing on ascent!"));
/* Do and print minimum gas calculation for last bottom gas, but only for OC mode, */
/* not for recreational mode and if no other warning was set before. */
else
if (lastbottomdp && gasidx == lastbottomdp->cylinderid
&& dive->dc.divemode == OC && decoMode() != RECREATIONAL) {
/* Calculate minimum gas volume. */
volume_t mingasv;
mingasv.mliter = lrint(prefs.sacfactor / 100.0 * prefs.problemsolvingtime * prefs.bottomsac
* depth_to_bar(lastbottomdp->depth.mm, dive)
+ prefs.sacfactor / 100.0 * cyl->deco_gas_used.mliter);
/* Calculate minimum gas pressure for cyclinder. */
lastbottomdp->minimum_gas.mbar = lrint(isothermal_pressure(&cyl->gasmix, 1.0,
mingasv.mliter, cyl->type.size.mliter) * 1000);
/* Translate all results into correct units */
mingas_volume = get_volume_units(mingasv.mliter, NULL, &unit);
mingas_pressure = get_pressure_units(lastbottomdp->minimum_gas.mbar, &pressure_unit);
mingas_d_pressure = get_pressure_units(lrint((double)cyl->end.mbar + deco_pressure_mbar - lastbottomdp->minimum_gas.mbar), &pressure_unit);
mingas_depth = get_depth_units(lastbottomdp->depth.mm, NULL, &depth_unit);
/* Print it to results */
if (cyl->start.mbar > lastbottomdp->minimum_gas.mbar) {
snprintf_loc(mingas, sizeof(mingas), "<br> — <span style='color: %s;'>%s</span> (%s %.1fx%s/+%d%s@%.0f%s): "
"%.0f%s/%.0f%s<span style='color: %s;'>/Δ:%+.0f%s</span>",
mingas_d_pressure > 0 ? "green" :"red",
translate("gettextFromC", "Minimum gas"),
translate("gettextFromC", "based on"),
prefs.sacfactor / 100.0,
translate("gettextFromC", "SAC"),
prefs.problemsolvingtime,
translate("gettextFromC", "min"),
mingas_depth, depth_unit,
mingas_volume, unit,
mingas_pressure, pressure_unit,
mingas_d_pressure > 0 ? "grey" :"indianred",
mingas_d_pressure, pressure_unit);
} else {
snprintf(warning, sizeof(warning), "<br> — <span style='color: red;'>%s </span> %s",
translate("gettextFromC", "Warning:"),
translate("gettextFromC", "required minimum gas for ascent already exceeding start pressure of cylinder!"));
}
}
/* Print the gas consumption for every cylinder here to temp buffer. */
if (lrint(volume) > 0) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "%.0f%s/%.0f%s of <span style='color: red;'><b>%s</b></span> (%.0f%s/%.0f%s in planned ascent)"),
volume, unit, pressure, pressure_unit, gasname(&cyl->gasmix), deco_volume, unit, deco_pressure, pressure_unit);
} else {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "%.0f%s/%.0f%s of <span style='color: red;'><b>%s</b></span>"),
volume, unit, pressure, pressure_unit, gasname(&cyl->gasmix));
}
} else {
if (lrint(volume) > 0) {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "%.0f%s of <span style='color: red;'><b>%s</b></span> (%.0f%s during planned ascent)"),
volume, unit, gasname(&cyl->gasmix), deco_volume, unit);
} else {
snprintf_loc(temp, sz_temp, translate("gettextFromC", "%.0f%s of <span style='color: red;'><b>%s</b></span>"),
volume, unit, gasname(&cyl->gasmix));
}
}
/* Gas consumption: Now finally print all strings to output */
len += snprintf(buffer + len, sz_buffer - len, "%s%s%s<br></div>", temp, warning, mingas);
}
/* For trimix OC dives, if an icd table header and icd data were printed to buffer, then add the ICD table here */
if (!icdtableheader && prefs.show_icd) {
icdlen += snprintf(icdbuffer + icdlen, sz_icdbuf - icdlen,"</tbody></table>"); // End the ICD table
len += snprintf(buffer + len, sz_buffer - len, "%s", icdbuffer); // ..and add it to the html buffer
if (icdwarning) { // If necessary, add warning
len += snprintf(buffer + len, sz_buffer - len, "<span style='color: red;'>%s</span> %s",
translate("gettextFromC", "Warning:"),
translate("gettextFromC", "Isobaric counterdiffusion conditions exceeded"));
}
len += snprintf(buffer + len, sz_buffer - len, "<br></div>");
}
/* Print warnings for pO2 */
dp = diveplan->dp;
bool o2warning_exist = false;
if (dive->dc.divemode != CCR) {
while (dp) {
if (dp->time != 0) {
struct gas_pressures pressures;
struct gasmix *gasmix = &dive->cylinder[dp->cylinderid].gasmix;
fill_pressures(&pressures, depth_to_atm(dp->depth.mm, dive), gasmix, 0.0, dive->dc.divemode);
if (pressures.o2 > (dp->entered ? prefs.bottompo2 : prefs.decopo2) / 1000.0) {
const char *depth_unit;
int decimals;
double depth_value = get_depth_units(dp->depth.mm, &decimals, &depth_unit);
len = strlen(buffer);
if (!o2warning_exist)
len += snprintf(buffer + len, sz_buffer - len, "<div>");
o2warning_exist = true;
snprintf_loc(temp, sz_temp,
translate("gettextFromC", "high pO₂ value %.2f at %d:%02u with gas %s at depth %.*f %s"),
pressures.o2, FRACTION(dp->time, 60), gasname(gasmix), decimals, depth_value, depth_unit);
len += snprintf(buffer + len, sz_buffer - len, "<span style='color: red;'>%s </span> %s<br>",
translate("gettextFromC", "Warning:"), temp);
} else if (pressures.o2 < 0.16) {
const char *depth_unit;
int decimals;
double depth_value = get_depth_units(dp->depth.mm, &decimals, &depth_unit);
len = strlen(buffer);
if (!o2warning_exist)
len += snprintf(buffer + len, sz_buffer - len, "<div>");
o2warning_exist = true;
snprintf_loc(temp, sz_temp,
translate("gettextFromC", "low pO₂ value %.2f at %d:%02u with gas %s at depth %.*f %s"),
pressures.o2, FRACTION(dp->time, 60), gasname(gasmix), decimals, depth_value, depth_unit);
len += snprintf(buffer + len, sz_buffer - len, "<span style='color: red;'>%s </span> %s<br>",
translate("gettextFromC", "Warning:"), temp);
}
}
dp = dp->next;
}
}
snprintf(buffer + len, sz_buffer - len, "</div>");
dive->notes = strdup(buffer);
finished:
free((void *)buffer);
free((void *)temp);
free((void *)icdbuffer);
}
|