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https://github.com/subsurface/subsurface.git
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1585 lines
56 KiB
C
1585 lines
56 KiB
C
/* planner.c
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*
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* code that allows us to plan future dives
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*
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* (c) Dirk Hohndel 2013
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*/
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#include <assert.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <string.h>
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#include "dive.h"
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#include "deco.h"
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#include "divelist.h"
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#include "planner.h"
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#include "gettext.h"
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#include "libdivecomputer/parser.h"
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#include "qthelperfromc.h"
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#define TIMESTEP 2 /* second */
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#define DECOTIMESTEP 60 /* seconds. Unit of deco stop times */
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int decostoplevels_metric[] = { 0, 3000, 6000, 9000, 12000, 15000, 18000, 21000, 24000, 27000,
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30000, 33000, 36000, 39000, 42000, 45000, 48000, 51000, 54000, 57000,
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60000, 63000, 66000, 69000, 72000, 75000, 78000, 81000, 84000, 87000,
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90000, 100000, 110000, 120000, 130000, 140000, 150000, 160000, 170000,
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180000, 190000, 200000, 220000, 240000, 260000, 280000, 300000,
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320000, 340000, 360000, 380000 };
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int decostoplevels_imperial[] = { 0, 3048, 6096, 9144, 12192, 15240, 18288, 21336, 24384, 27432,
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30480, 33528, 36576, 39624, 42672, 45720, 48768, 51816, 54864, 57912,
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60960, 64008, 67056, 70104, 73152, 76200, 79248, 82296, 85344, 88392,
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91440, 101600, 111760, 121920, 132080, 142240, 152400, 162560, 172720,
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182880, 193040, 203200, 223520, 243840, 264160, 284480, 304800,
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325120, 345440, 365760, 386080 };
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double plangflow, plangfhigh;
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bool plan_verbatim, plan_display_runtime, plan_display_duration, plan_display_transitions;
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extern double regressiona();
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extern double regressionb();
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extern void reset_regression();
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pressure_t first_ceiling_pressure, max_bottom_ceiling_pressure = {};
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const char *disclaimer;
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int plot_depth = 0;
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#if DEBUG_PLAN
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void dump_plan(struct diveplan *diveplan)
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{
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struct divedatapoint *dp;
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struct tm tm;
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if (!diveplan) {
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printf("Diveplan NULL\n");
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return;
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}
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utc_mkdate(diveplan->when, &tm);
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printf("\nDiveplan @ %04d-%02d-%02d %02d:%02d:%02d (surfpres %dmbar):\n",
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tm.tm_year, tm.tm_mon + 1, tm.tm_mday,
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tm.tm_hour, tm.tm_min, tm.tm_sec,
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diveplan->surface_pressure);
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dp = diveplan->dp;
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while (dp) {
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printf("\t%3u:%02u: %dmm gas: %d o2 %d h2\n", FRACTION(dp->time, 60), dp->depth, get_o2(&dp->gasmix), get_he(&dp->gasmix));
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dp = dp->next;
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}
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}
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#endif
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bool diveplan_empty(struct diveplan *diveplan)
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{
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struct divedatapoint *dp;
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if (!diveplan || !diveplan->dp)
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return true;
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dp = diveplan->dp;
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while (dp) {
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if (dp->time)
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return false;
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dp = dp->next;
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}
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return true;
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}
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/* get the gas at a certain time during the dive */
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void get_gas_at_time(struct dive *dive, struct divecomputer *dc, duration_t time, struct gasmix *gas)
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{
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// we always start with the first gas, so that's our gas
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// unless an event tells us otherwise
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struct event *event = dc->events;
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*gas = dive->cylinder[0].gasmix;
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while (event && event->time.seconds <= time.seconds) {
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if (!strcmp(event->name, "gaschange")) {
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int cylinder_idx = get_cylinder_index(dive, event);
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*gas = dive->cylinder[cylinder_idx].gasmix;
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}
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event = event->next;
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}
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}
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/* get the cylinder index at a certain time during the dive */
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int get_cylinderid_at_time(struct dive *dive, struct divecomputer *dc, duration_t time)
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{
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// we start with the first cylinder unless an event tells us otherwise
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int cylinder_idx = 0;
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struct event *event = dc->events;
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while (event && event->time.seconds <= time.seconds) {
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if (!strcmp(event->name, "gaschange"))
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cylinder_idx = get_cylinder_index(dive, event);
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event = event->next;
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}
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return cylinder_idx;
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}
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int get_gasidx(struct dive *dive, struct gasmix *mix)
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{
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return find_best_gasmix_match(mix, dive->cylinder, 0);
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}
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void interpolate_transition(struct dive *dive, duration_t t0, duration_t t1, depth_t d0, depth_t d1, const struct gasmix *gasmix, o2pressure_t po2)
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{
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uint32_t j;
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for (j = t0.seconds; j < t1.seconds; j++) {
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int depth = interpolate(d0.mm, d1.mm, j - t0.seconds, t1.seconds - t0.seconds);
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add_segment(depth_to_bar(depth, dive), gasmix, 1, po2.mbar, dive, prefs.bottomsac);
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}
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if (d1.mm > d0.mm)
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calc_crushing_pressure(depth_to_bar(d1.mm, &displayed_dive));
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}
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/* returns the tissue tolerance at the end of this (partial) dive */
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unsigned int tissue_at_end(struct dive *dive, char **cached_datap)
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{
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struct divecomputer *dc;
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struct sample *sample, *psample;
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int i;
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depth_t lastdepth = {};
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duration_t t0 = {}, t1 = {};
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struct gasmix gas;
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unsigned int surface_interval = 0;
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if (!dive)
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return 0;
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if (*cached_datap) {
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restore_deco_state(*cached_datap);
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} else {
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surface_interval = init_decompression(dive);
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cache_deco_state(cached_datap);
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}
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dc = &dive->dc;
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if (!dc->samples)
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return 0;
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psample = sample = dc->sample;
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for (i = 0; i < dc->samples; i++, sample++) {
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o2pressure_t setpoint;
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if (i)
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setpoint = sample[-1].setpoint;
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else
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setpoint = sample[0].setpoint;
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t1 = sample->time;
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get_gas_at_time(dive, dc, t0, &gas);
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if (i > 0)
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lastdepth = psample->depth;
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/* The ceiling in the deeper portion of a multilevel dive is sometimes critical for the VPM-B
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* Boyle's law compensation. We should check the ceiling prior to ascending during the bottom
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* portion of the dive. The maximum ceiling might be reached while ascending, but testing indicates
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* that it is only marginally deeper than the ceiling at the start of ascent.
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* Do not set the first_ceiling_pressure variable (used for the Boyle's law compensation calculation)
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* at this stage, because it would interfere with calculating the ceiling at the end of the bottom
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* portion of the dive.
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* Remember the value for later.
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*/
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if ((decoMode() == VPMB) && (lastdepth.mm > sample->depth.mm)) {
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pressure_t ceiling_pressure;
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nuclear_regeneration(t0.seconds);
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vpmb_start_gradient();
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ceiling_pressure.mbar = depth_to_mbar(deco_allowed_depth(tissue_tolerance_calc(dive,
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depth_to_bar(lastdepth.mm, dive)),
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dive->surface_pressure.mbar / 1000.0,
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dive,
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1),
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dive);
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if (ceiling_pressure.mbar > max_bottom_ceiling_pressure.mbar)
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max_bottom_ceiling_pressure.mbar = ceiling_pressure.mbar;
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}
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interpolate_transition(dive, t0, t1, lastdepth, sample->depth, &gas, setpoint);
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psample = sample;
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t0 = t1;
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}
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return surface_interval;
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}
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/* if a default cylinder is set, use that */
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void fill_default_cylinder(cylinder_t *cyl)
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{
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const char *cyl_name = prefs.default_cylinder;
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struct tank_info_t *ti = tank_info;
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pressure_t pO2 = {.mbar = 1600};
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if (!cyl_name)
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return;
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while (ti->name != NULL) {
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if (strcmp(ti->name, cyl_name) == 0)
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break;
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ti++;
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}
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if (ti->name == NULL)
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/* didn't find it */
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return;
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cyl->type.description = strdup(ti->name);
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if (ti->ml) {
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cyl->type.size.mliter = ti->ml;
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cyl->type.workingpressure.mbar = ti->bar * 1000;
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} else {
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cyl->type.workingpressure.mbar = psi_to_mbar(ti->psi);
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if (ti->psi)
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cyl->type.size.mliter = cuft_to_l(ti->cuft) * 1000 / bar_to_atm(psi_to_bar(ti->psi));
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}
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// MOD of air
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cyl->depth = gas_mod(&cyl->gasmix, pO2, &displayed_dive, 1);
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}
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/* calculate the new end pressure of the cylinder, based on its current end pressure and the
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* latest segment. */
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static void update_cylinder_pressure(struct dive *d, int old_depth, int new_depth, int duration, int sac, cylinder_t *cyl, bool in_deco)
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{
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volume_t gas_used;
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pressure_t delta_p;
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depth_t mean_depth;
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int factor = 1000;
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if (d->dc.divemode == PSCR)
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factor = prefs.pscr_ratio;
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if (!cyl)
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return;
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mean_depth.mm = (old_depth + new_depth) / 2;
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gas_used.mliter = depth_to_atm(mean_depth.mm, d) * sac / 60 * duration * factor / 1000;
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cyl->gas_used.mliter += gas_used.mliter;
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if (in_deco)
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cyl->deco_gas_used.mliter += gas_used.mliter;
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if (cyl->type.size.mliter) {
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delta_p.mbar = gas_used.mliter * 1000.0 / cyl->type.size.mliter * gas_compressibility_factor(&cyl->gasmix, cyl->end.mbar / 1000.0);
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cyl->end.mbar -= delta_p.mbar;
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}
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}
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/* simply overwrite the data in the displayed_dive
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* return false if something goes wrong */
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static void create_dive_from_plan(struct diveplan *diveplan, bool track_gas)
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{
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struct divedatapoint *dp;
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struct divecomputer *dc;
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struct sample *sample;
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struct event *ev;
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cylinder_t *cyl;
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int oldpo2 = 0;
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int lasttime = 0;
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int lastdepth = 0;
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int lastcylid = 0;
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enum dive_comp_type type = displayed_dive.dc.divemode;
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if (!diveplan || !diveplan->dp)
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return;
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#if DEBUG_PLAN & 4
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printf("in create_dive_from_plan\n");
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dump_plan(diveplan);
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#endif
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displayed_dive.salinity = diveplan->salinity;
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// reset the cylinders and clear out the samples and events of the
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// displayed dive so we can restart
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reset_cylinders(&displayed_dive, track_gas);
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dc = &displayed_dive.dc;
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dc->when = displayed_dive.when = diveplan->when;
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dc->surface_pressure.mbar = diveplan->surface_pressure;
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dc->salinity = diveplan->salinity;
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free(dc->sample);
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dc->sample = NULL;
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dc->samples = 0;
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dc->alloc_samples = 0;
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while ((ev = dc->events)) {
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dc->events = dc->events->next;
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free(ev);
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}
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dp = diveplan->dp;
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cyl = &displayed_dive.cylinder[lastcylid];
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sample = prepare_sample(dc);
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sample->setpoint.mbar = dp->setpoint;
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sample->sac.mliter = prefs.bottomsac;
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oldpo2 = dp->setpoint;
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if (track_gas && cyl->type.workingpressure.mbar)
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sample->cylinderpressure.mbar = cyl->end.mbar;
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sample->manually_entered = true;
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finish_sample(dc);
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while (dp) {
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int po2 = dp->setpoint;
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if (dp->setpoint)
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type = CCR;
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int time = dp->time;
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int depth = dp->depth;
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if (time == 0) {
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/* special entries that just inform the algorithm about
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* additional gases that are available */
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dp = dp->next;
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continue;
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}
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/* Check for SetPoint change */
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if (oldpo2 != po2) {
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/* this is a bad idea - we should get a different SAMPLE_EVENT type
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* reserved for this in libdivecomputer... overloading SMAPLE_EVENT_PO2
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* with a different meaning will only cause confusion elsewhere in the code */
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add_event(dc, lasttime, SAMPLE_EVENT_PO2, 0, po2, QT_TRANSLATE_NOOP("gettextFromC", "SP change"));
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oldpo2 = po2;
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}
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/* Make sure we have the new gas, and create a gas change event */
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if (dp->cylinderid != lastcylid) {
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/* need to insert a first sample for the new gas */
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add_gas_switch_event(&displayed_dive, dc, lasttime + 1, dp->cylinderid);
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cyl = &displayed_dive.cylinder[dp->cylinderid];
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sample = prepare_sample(dc);
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sample[-1].setpoint.mbar = po2;
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sample->time.seconds = lasttime + 1;
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sample->depth.mm = lastdepth;
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sample->manually_entered = dp->entered;
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sample->sac.mliter = dp->entered ? prefs.bottomsac : prefs.decosac;
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if (track_gas && cyl->type.workingpressure.mbar)
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sample->cylinderpressure.mbar = cyl->sample_end.mbar;
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finish_sample(dc);
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lastcylid = dp->cylinderid;
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}
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/* Create sample */
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sample = prepare_sample(dc);
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/* set po2 at beginning of this segment */
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/* and keep it valid for last sample - where it likely doesn't matter */
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sample[-1].setpoint.mbar = po2;
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sample->setpoint.mbar = po2;
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sample->time.seconds = lasttime = time;
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sample->depth.mm = lastdepth = depth;
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sample->manually_entered = dp->entered;
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sample->sac.mliter = dp->entered ? prefs.bottomsac : prefs.decosac;
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if (track_gas && !sample[-1].setpoint.mbar) { /* Don't track gas usage for CCR legs of dive */
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update_cylinder_pressure(&displayed_dive, sample[-1].depth.mm, depth, time - sample[-1].time.seconds,
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dp->entered ? diveplan->bottomsac : diveplan->decosac, cyl, !dp->entered);
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if (cyl->type.workingpressure.mbar)
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sample->cylinderpressure.mbar = cyl->end.mbar;
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}
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finish_sample(dc);
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dp = dp->next;
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}
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dc->divemode = type;
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#if DEBUG_PLAN & 32
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save_dive(stdout, &displayed_dive);
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#endif
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return;
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}
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void free_dps(struct diveplan *diveplan)
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{
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if (!diveplan)
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return;
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struct divedatapoint *dp = diveplan->dp;
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while (dp) {
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struct divedatapoint *ndp = dp->next;
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free(dp);
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dp = ndp;
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}
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diveplan->dp = NULL;
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}
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struct divedatapoint *create_dp(int time_incr, int depth, int cylinderid, int po2)
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{
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struct divedatapoint *dp;
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dp = malloc(sizeof(struct divedatapoint));
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dp->time = time_incr;
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dp->depth = depth;
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dp->cylinderid = cylinderid;
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dp->setpoint = po2;
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dp->entered = false;
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dp->next = NULL;
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return dp;
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}
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void add_to_end_of_diveplan(struct diveplan *diveplan, struct divedatapoint *dp)
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{
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struct divedatapoint **lastdp = &diveplan->dp;
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struct divedatapoint *ldp = *lastdp;
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int lasttime = 0;
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while (*lastdp) {
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ldp = *lastdp;
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if (ldp->time > lasttime)
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lasttime = ldp->time;
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lastdp = &(*lastdp)->next;
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}
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*lastdp = dp;
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if (ldp && dp->time != 0)
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dp->time += lasttime;
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}
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struct divedatapoint *plan_add_segment(struct diveplan *diveplan, int duration, int depth, int cylinderid, int po2, bool entered)
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{
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struct divedatapoint *dp = create_dp(duration, depth, cylinderid, po2);
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dp->entered = entered;
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add_to_end_of_diveplan(diveplan, dp);
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return dp;
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}
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struct gaschanges {
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int depth;
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int gasidx;
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};
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static struct gaschanges *analyze_gaslist(struct diveplan *diveplan, int *gaschangenr, int depth, int *asc_cylinder)
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{
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int nr = 0;
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struct gaschanges *gaschanges = NULL;
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struct divedatapoint *dp = diveplan->dp;
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int best_depth = displayed_dive.cylinder[*asc_cylinder].depth.mm;
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bool total_time_zero = true;
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while (dp) {
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if (dp->time == 0 && total_time_zero) {
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if (dp->depth <= depth) {
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int i = 0;
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nr++;
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gaschanges = realloc(gaschanges, nr * sizeof(struct gaschanges));
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while (i < nr - 1) {
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if (dp->depth < gaschanges[i].depth) {
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memmove(gaschanges + i + 1, gaschanges + i, (nr - i - 1) * sizeof(struct gaschanges));
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break;
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}
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i++;
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}
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gaschanges[i].depth = dp->depth;
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gaschanges[i].gasidx = dp->cylinderid;
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assert(gaschanges[i].gasidx != -1);
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} else {
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/* is there a better mix to start deco? */
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if (dp->depth < best_depth) {
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best_depth = dp->depth;
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*asc_cylinder = dp->cylinderid;
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}
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}
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} else {
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total_time_zero = false;
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}
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dp = dp->next;
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}
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*gaschangenr = nr;
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#if DEBUG_PLAN & 16
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for (nr = 0; nr < *gaschangenr; nr++) {
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int idx = gaschanges[nr].gasidx;
|
|
printf("gaschange nr %d: @ %5.2lfm gasidx %d (%s)\n", nr, gaschanges[nr].depth / 1000.0,
|
|
idx, gasname(&displayed_dive.cylinder[idx].gasmix));
|
|
}
|
|
#endif
|
|
return gaschanges;
|
|
}
|
|
|
|
/* sort all the stops into one ordered list */
|
|
static int *sort_stops(int *dstops, int dnr, struct gaschanges *gstops, int gnr)
|
|
{
|
|
int i, gi, di;
|
|
int total = dnr + gnr;
|
|
int *stoplevels = malloc(total * sizeof(int));
|
|
|
|
/* no gaschanges */
|
|
if (gnr == 0) {
|
|
memcpy(stoplevels, dstops, dnr * sizeof(int));
|
|
return stoplevels;
|
|
}
|
|
i = total - 1;
|
|
gi = gnr - 1;
|
|
di = dnr - 1;
|
|
while (i >= 0) {
|
|
if (dstops[di] > gstops[gi].depth) {
|
|
stoplevels[i] = dstops[di];
|
|
di--;
|
|
} else if (dstops[di] == gstops[gi].depth) {
|
|
stoplevels[i] = dstops[di];
|
|
di--;
|
|
gi--;
|
|
} else {
|
|
stoplevels[i] = gstops[gi].depth;
|
|
gi--;
|
|
}
|
|
i--;
|
|
if (di < 0) {
|
|
while (gi >= 0)
|
|
stoplevels[i--] = gstops[gi--].depth;
|
|
break;
|
|
}
|
|
if (gi < 0) {
|
|
while (di >= 0)
|
|
stoplevels[i--] = dstops[di--];
|
|
break;
|
|
}
|
|
}
|
|
while (i >= 0)
|
|
stoplevels[i--] = 0;
|
|
|
|
#if DEBUG_PLAN & 16
|
|
int k;
|
|
for (k = gnr + dnr - 1; k >= 0; k--) {
|
|
printf("stoplevel[%d]: %5.2lfm\n", k, stoplevels[k] / 1000.0);
|
|
if (stoplevels[k] == 0)
|
|
break;
|
|
}
|
|
#endif
|
|
return stoplevels;
|
|
}
|
|
|
|
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 / 60;
|
|
}
|
|
|
|
static 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;
|
|
char *buffer = (char *)malloc(sz_buffer);
|
|
char *temp = (char *)malloc(sz_temp);
|
|
char *deco, *segmentsymbol;
|
|
static char buf[1000];
|
|
int len, lastdepth = 0, lasttime = 0, lastsetpoint = -1, newdepth = 0, lastprintdepth = 0, lastprintsetpoint = -1;
|
|
struct gasmix lastprintgasmix = {{ -1 }, { -1 }};
|
|
struct divedatapoint *dp = diveplan->dp;
|
|
bool gaschange_after = !plan_verbatim;
|
|
bool gaschange_before;
|
|
bool lastentered = true;
|
|
struct divedatapoint *nextdp = NULL;
|
|
struct divedatapoint *lastbottomdp = NULL;
|
|
|
|
plan_verbatim = prefs.verbatim_plan;
|
|
plan_display_runtime = prefs.display_runtime;
|
|
plan_display_duration = prefs.display_duration;
|
|
plan_display_transitions = prefs.display_transitions;
|
|
|
|
if (decoMode() == VPMB) {
|
|
deco = "VPM-B";
|
|
} else {
|
|
deco = "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) {
|
|
free((void *)buffer);
|
|
free((void *)temp);
|
|
return;
|
|
}
|
|
|
|
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);
|
|
|
|
free((void *)buffer);
|
|
free((void *)temp);
|
|
return;
|
|
}
|
|
|
|
len = show_disclaimer ? snprintf(buffer, sz_buffer, "<div><b>%s<b><br></div>", disclaimer) : 0;
|
|
|
|
if (diveplan->surface_interval > 60) {
|
|
len += snprintf(buffer + len, sz_buffer - len, "<div><b>%s %d:%02d)</b><br>",
|
|
translate("gettextFromC", "Subsurface dive plan (surface interval "),
|
|
FRACTION(diveplan->surface_interval / 60, 60));
|
|
} else {
|
|
len += snprintf(buffer + len, sz_buffer - len, "<div><b>%s</b><br>",
|
|
translate("gettextFromC", "Subsurface dive plan"));
|
|
}
|
|
|
|
len += snprintf(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 < lastdepth);
|
|
|
|
nextdp = dp->next;
|
|
if (dp->time == 0)
|
|
continue;
|
|
gasmix = dive->cylinder[dp->cylinderid].gasmix;
|
|
depthvalue = get_depth_units(dp->depth, &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 != lastdepth &&
|
|
nextdp->depth != dp->depth &&
|
|
!gaschange_before &&
|
|
!gaschange_after)
|
|
continue;
|
|
if (dp->time - lasttime < 10 && !(gaschange_after && dp->next && dp->depth != dp->next->depth))
|
|
continue;
|
|
|
|
/* Store pointer to last entered datapoint for minimum gas calculation */
|
|
/* Do this only if depth is larger than last/2nd last deco stop at ~6m */
|
|
int secondlastdecostop = 0;
|
|
if (prefs.units.length == METERS ) {
|
|
secondlastdecostop = decostoplevels_metric[2];
|
|
} else {
|
|
secondlastdecostop = decostoplevels_imperial[2];
|
|
}
|
|
if (dp->entered && !nextdp->entered && dp->depth > secondlastdecostop)
|
|
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 != lastprintdepth) {
|
|
if (plan_display_transitions || dp->entered || !dp->next || (gaschange_after && dp->next && dp->depth != nextdp->depth)) {
|
|
if (dp->setpoint)
|
|
snprintf(temp, sz_temp, translate("gettextFromC", "Transition to %.*f %s in %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(temp, sz_temp, translate("gettextFromC", "Transition to %.*f %s in %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;
|
|
lasttime = dp->time;
|
|
} else {
|
|
if ((nextdp && dp->depth != nextdp->depth) || gaschange_after) {
|
|
if (dp->setpoint)
|
|
snprintf(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(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;
|
|
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 != nextdp->depth) ||
|
|
(!isascent && gaschange_before && nextdp && dp->depth != nextdp->depth) ||
|
|
(gaschange_after && lastentered) || (gaschange_after && !isascent) ||
|
|
(isascent && gaschange_after && nextdp && dp->depth != nextdp->depth )) {
|
|
// 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 > 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 != nextdp->depth || nextdp->entered)) {
|
|
if (dp->setpoint) {
|
|
snprintf(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));
|
|
}
|
|
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(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));
|
|
}
|
|
// 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;
|
|
lasttime = dp->time;
|
|
}
|
|
}
|
|
if (gaschange_after) {
|
|
// gas switch at this waypoint
|
|
if (plan_verbatim) {
|
|
if (lastsetpoint >= 0) {
|
|
if (nextdp && nextdp->setpoint)
|
|
snprintf(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));
|
|
|
|
len += snprintf(buffer + len, sz_buffer - len, "%s<br>", temp);
|
|
}
|
|
gaschange_after = false;
|
|
gasmix = newgasmix;
|
|
}
|
|
}
|
|
lastprintdepth = newdepth;
|
|
lastdepth = dp->depth;
|
|
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(buffer + len, sz_buffer - len, "<div>%s: %i%%", temp, dive->cns);
|
|
snprintf(temp, sz_temp, "%s", translate("gettextFromC", "OTU"));
|
|
len += snprintf(buffer + len, sz_buffer - len, "<br>%s: %i<br></div>", temp, dive->otu);
|
|
|
|
/* Print the settings for the diveplan next. */
|
|
if (decoMode() == BUEHLMANN){
|
|
snprintf(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(temp, sz_temp, translate("gettextFromC", "Deco model: VPM-B at +%d conservatism"), diveplan->vpmb_conservatism);
|
|
if (diveplan->eff_gflow)
|
|
temp_len += snprintf(temp + temp_len, sz_temp - temp_len, translate("gettextFromC", ", effective GF=%d/%d"), diveplan->eff_gflow
|
|
, diveplan->eff_gfhigh);
|
|
|
|
} else if (decoMode() == RECREATIONAL){
|
|
snprintf(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(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 */
|
|
float 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(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_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 = (double)cyl->end.mbar * cyl->type.size.mliter / 1000.0 / gas_compressibility_factor(&cyl->gasmix, cyl->end.mbar / 1000.0);
|
|
double deco_pressure_bar = isothermal_pressure(&cyl->gasmix, 1.0, remaining_gas + cyl->deco_gas_used.mliter, cyl->type.size.mliter)
|
|
- cyl->end.mbar / 1000.0;
|
|
deco_pressure = get_pressure_units(1000.0 * deco_pressure_bar, &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 ((float) cyl->end.mbar * cyl->type.size.mliter / 1000.0 / gas_compressibility_factor(&cyl->gasmix, cyl->end.mbar / 1000.0)
|
|
< (float) 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 = prefs.problemsolvingtime * prefs.bottomsac * prefs.sacfactor / 100.0
|
|
* depth_to_bar(lastbottomdp->depth, dive)
|
|
+ cyl->deco_gas_used.mliter * prefs.sacfactor / 100.0;
|
|
/* Calculate minimum gas pressure for cyclinder. */
|
|
pressure_t mingasp;
|
|
mingasp.mbar = 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(mingasp.mbar, &pressure_unit);
|
|
mingas_depth = get_depth_units(lastbottomdp->depth, NULL, &depth_unit);
|
|
/* Print it to results */
|
|
if (cyl->start.mbar > mingasp.mbar) snprintf(mingas, sizeof(mingas),
|
|
translate("gettextFromC", "<br> — <span style='color: green;'>Minimum gas</span> (based on %.1fxSAC/+%dmin@%.0f%s): %.0f%s/%.0f%s"),
|
|
prefs.sacfactor / 100.0, prefs.problemsolvingtime,
|
|
mingas_depth, depth_unit,
|
|
mingas_volume, unit,
|
|
mingas_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. */
|
|
snprintf(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(temp, sz_temp, translate("gettextFromC", "%.0f%s (%.0f%s during planned ascent) of <span style='color: red;'><b>%s</b></span>"),
|
|
volume, unit, deco_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>", temp, warning, mingas);
|
|
}
|
|
|
|
/* 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, 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, &decimals, &depth_unit);
|
|
len = strlen(buffer);
|
|
if (!o2warning_exist) len += snprintf(buffer + len, sz_buffer - len, "<br>");
|
|
o2warning_exist = true;
|
|
snprintf(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, &decimals, &depth_unit);
|
|
len = strlen(buffer);
|
|
if (!o2warning_exist) len += snprintf(buffer + len, sz_buffer - len, "<br>");
|
|
o2warning_exist = true;
|
|
snprintf(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);
|
|
|
|
free((void *)buffer);
|
|
free((void *)temp);
|
|
}
|
|
|
|
int ascent_velocity(int depth, int avg_depth, int bottom_time)
|
|
{
|
|
(void) bottom_time;
|
|
/* We need to make this configurable */
|
|
|
|
/* As an example (and possibly reasonable default) this is the Tech 1 provedure according
|
|
* to http://www.globalunderwaterexplorers.org/files/Standards_and_Procedures/SOP_Manual_Ver2.0.2.pdf */
|
|
|
|
if (depth * 4 > avg_depth * 3) {
|
|
return prefs.ascrate75;
|
|
} else {
|
|
if (depth * 2 > avg_depth) {
|
|
return prefs.ascrate50;
|
|
} else {
|
|
if (depth > 6000)
|
|
return prefs.ascratestops;
|
|
else
|
|
return prefs.ascratelast6m;
|
|
}
|
|
}
|
|
}
|
|
|
|
void track_ascent_gas(int depth, cylinder_t *cylinder, int avg_depth, int bottom_time, bool safety_stop)
|
|
{
|
|
while (depth > 0) {
|
|
int deltad = ascent_velocity(depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (deltad > depth)
|
|
deltad = depth;
|
|
update_cylinder_pressure(&displayed_dive, depth, depth - deltad, TIMESTEP, prefs.decosac, cylinder, true);
|
|
if (depth <= 5000 && depth >= (5000 - deltad) && safety_stop) {
|
|
update_cylinder_pressure(&displayed_dive, 5000, 5000, 180, prefs.decosac, cylinder, true);
|
|
safety_stop = false;
|
|
}
|
|
depth -= deltad;
|
|
}
|
|
}
|
|
|
|
// Determine whether ascending to the next stop will break the ceiling. Return true if the ascent is ok, false if it isn't.
|
|
bool trial_ascent(int trial_depth, int stoplevel, int avg_depth, int bottom_time, struct gasmix *gasmix, int po2, double surface_pressure)
|
|
{
|
|
|
|
bool clear_to_ascend = true;
|
|
char *trial_cache = NULL;
|
|
|
|
// For consistency with other VPM-B implementations, we should not start the ascent while the ceiling is
|
|
// deeper than the next stop (thus the offgasing during the ascent is ignored).
|
|
// However, we still need to make sure we don't break the ceiling due to on-gassing during ascent.
|
|
if (decoMode() == VPMB && (deco_allowed_depth(tissue_tolerance_calc(&displayed_dive,
|
|
depth_to_bar(stoplevel, &displayed_dive)),
|
|
surface_pressure, &displayed_dive, 1) > stoplevel))
|
|
return false;
|
|
|
|
cache_deco_state(&trial_cache);
|
|
while (trial_depth > stoplevel) {
|
|
int deltad = ascent_velocity(trial_depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (deltad > trial_depth) /* don't test against depth above surface */
|
|
deltad = trial_depth;
|
|
add_segment(depth_to_bar(trial_depth, &displayed_dive),
|
|
gasmix,
|
|
TIMESTEP, po2, &displayed_dive, prefs.decosac);
|
|
if (deco_allowed_depth(tissue_tolerance_calc(&displayed_dive, depth_to_bar(trial_depth, &displayed_dive)),
|
|
surface_pressure, &displayed_dive, 1) > trial_depth - deltad) {
|
|
/* We should have stopped */
|
|
clear_to_ascend = false;
|
|
break;
|
|
}
|
|
trial_depth -= deltad;
|
|
}
|
|
restore_deco_state(trial_cache);
|
|
free(trial_cache);
|
|
return clear_to_ascend;
|
|
}
|
|
|
|
/* Determine if there is enough gas for the dive. Return true if there is enough.
|
|
* Also return true if this cannot be calculated because the cylinder doesn't have
|
|
* size or a starting pressure.
|
|
*/
|
|
bool enough_gas(int current_cylinder)
|
|
{
|
|
cylinder_t *cyl;
|
|
cyl = &displayed_dive.cylinder[current_cylinder];
|
|
|
|
if (!cyl->start.mbar)
|
|
return true;
|
|
if (cyl->type.size.mliter)
|
|
return (float)(cyl->end.mbar - prefs.reserve_gas) * cyl->type.size.mliter / 1000.0 > (float) cyl->deco_gas_used.mliter;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
// Work out the stops. Return value is if there were any mandatory stops.
|
|
|
|
bool plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool show_disclaimer)
|
|
{
|
|
int bottom_depth;
|
|
int bottom_gi;
|
|
int bottom_stopidx;
|
|
bool is_final_plan = true;
|
|
int deco_time;
|
|
int previous_deco_time;
|
|
char *bottom_cache = NULL;
|
|
struct sample *sample;
|
|
int po2;
|
|
int transitiontime, gi;
|
|
int current_cylinder;
|
|
int stopidx;
|
|
int depth;
|
|
struct gaschanges *gaschanges = NULL;
|
|
int gaschangenr;
|
|
int *decostoplevels;
|
|
int decostoplevelcount;
|
|
int *stoplevels = NULL;
|
|
bool stopping = false;
|
|
bool pendinggaschange = false;
|
|
int clock, previous_point_time;
|
|
int avg_depth, max_depth, bottom_time = 0;
|
|
int last_ascend_rate;
|
|
int best_first_ascend_cylinder;
|
|
struct gasmix gas, bottom_gas;
|
|
int o2time = 0;
|
|
int breaktime = -1;
|
|
int breakcylinder = 0;
|
|
int error = 0;
|
|
bool decodive = false;
|
|
int first_stop_depth = 0;
|
|
|
|
set_gf(diveplan->gflow, diveplan->gfhigh, prefs.gf_low_at_maxdepth);
|
|
set_vpmb_conservatism(diveplan->vpmb_conservatism);
|
|
if (!diveplan->surface_pressure)
|
|
diveplan->surface_pressure = SURFACE_PRESSURE;
|
|
displayed_dive.surface_pressure.mbar = diveplan->surface_pressure;
|
|
clear_deco(displayed_dive.surface_pressure.mbar / 1000.0);
|
|
max_bottom_ceiling_pressure.mbar = first_ceiling_pressure.mbar = 0;
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
|
|
// Do we want deco stop array in metres or feet?
|
|
if (prefs.units.length == METERS ) {
|
|
decostoplevels = decostoplevels_metric;
|
|
decostoplevelcount = sizeof(decostoplevels_metric) / sizeof(int);
|
|
} else {
|
|
decostoplevels = decostoplevels_imperial;
|
|
decostoplevelcount = sizeof(decostoplevels_imperial) / sizeof(int);
|
|
}
|
|
|
|
/* If the user has selected last stop to be at 6m/20', we need to get rid of the 3m/10' stop.
|
|
* Otherwise reinstate the last stop 3m/10' stop.
|
|
*/
|
|
if (prefs.last_stop)
|
|
*(decostoplevels + 1) = 0;
|
|
else
|
|
*(decostoplevels + 1) = M_OR_FT(3,10);
|
|
|
|
/* Let's start at the last 'sample', i.e. the last manually entered waypoint. */
|
|
sample = &displayed_dive.dc.sample[displayed_dive.dc.samples - 1];
|
|
|
|
current_cylinder = get_cylinderid_at_time(&displayed_dive, &displayed_dive.dc, sample->time);
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
|
|
po2 = sample->setpoint.mbar;
|
|
depth = displayed_dive.dc.sample[displayed_dive.dc.samples - 1].depth.mm;
|
|
average_max_depth(diveplan, &avg_depth, &max_depth);
|
|
last_ascend_rate = ascent_velocity(depth, avg_depth, bottom_time);
|
|
|
|
/* if all we wanted was the dive just get us back to the surface */
|
|
if (!is_planner) {
|
|
transitiontime = depth / 75; /* this still needs to be made configurable */
|
|
plan_add_segment(diveplan, transitiontime, 0, current_cylinder, po2, false);
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
return false;
|
|
}
|
|
|
|
#if DEBUG_PLAN & 4
|
|
printf("gas %s\n", gasname(&gas));
|
|
printf("depth %5.2lfm \n", depth / 1000.0);
|
|
printf("current_cylinder %i\n", current_cylinder);
|
|
#endif
|
|
|
|
best_first_ascend_cylinder = current_cylinder;
|
|
/* Find the gases available for deco */
|
|
|
|
if (po2) { // Don't change gas in CCR mode
|
|
gaschanges = NULL;
|
|
gaschangenr = 0;
|
|
} else {
|
|
gaschanges = analyze_gaslist(diveplan, &gaschangenr, depth, &best_first_ascend_cylinder);
|
|
}
|
|
/* Find the first potential decostopdepth above current depth */
|
|
for (stopidx = 0; stopidx < decostoplevelcount; stopidx++)
|
|
if (*(decostoplevels + stopidx) >= depth)
|
|
break;
|
|
if (stopidx > 0)
|
|
stopidx--;
|
|
/* Stoplevels are either depths of gas changes or potential deco stop depths. */
|
|
stoplevels = sort_stops(decostoplevels, stopidx + 1, gaschanges, gaschangenr);
|
|
stopidx += gaschangenr;
|
|
|
|
/* Keep time during the ascend */
|
|
bottom_time = clock = previous_point_time = displayed_dive.dc.sample[displayed_dive.dc.samples - 1].time.seconds;
|
|
gi = gaschangenr - 1;
|
|
|
|
/* Set tissue tolerance and initial vpmb gradient at start of ascent phase */
|
|
diveplan->surface_interval = tissue_at_end(&displayed_dive, cached_datap);
|
|
nuclear_regeneration(clock);
|
|
vpmb_start_gradient();
|
|
|
|
if (decoMode() == RECREATIONAL) {
|
|
bool safety_stop = prefs.safetystop && max_depth >= 10000;
|
|
track_ascent_gas(depth, &displayed_dive.cylinder[current_cylinder], avg_depth, bottom_time, safety_stop);
|
|
// How long can we stay at the current depth and still directly ascent to the surface?
|
|
do {
|
|
add_segment(depth_to_bar(depth, &displayed_dive),
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
DECOTIMESTEP, po2, &displayed_dive, prefs.bottomsac);
|
|
update_cylinder_pressure(&displayed_dive, depth, depth, DECOTIMESTEP, prefs.bottomsac, &displayed_dive.cylinder[current_cylinder], false);
|
|
clock += DECOTIMESTEP;
|
|
} while (trial_ascent(depth, 0, avg_depth, bottom_time, &displayed_dive.cylinder[current_cylinder].gasmix,
|
|
po2, diveplan->surface_pressure / 1000.0) &&
|
|
enough_gas(current_cylinder));
|
|
|
|
// We did stay one DECOTIMESTEP too many.
|
|
// In the best of all worlds, we would roll back also the last add_segment in terms of caching deco state, but
|
|
// let's ignore that since for the eventual ascent in recreational mode, nobody looks at the ceiling anymore,
|
|
// so we don't really have to compute the deco state.
|
|
update_cylinder_pressure(&displayed_dive, depth, depth, -DECOTIMESTEP, prefs.bottomsac, &displayed_dive.cylinder[current_cylinder], false);
|
|
clock -= DECOTIMESTEP;
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, true);
|
|
previous_point_time = clock;
|
|
do {
|
|
/* Ascend to surface */
|
|
int deltad = ascent_velocity(depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (ascent_velocity(depth, avg_depth, bottom_time) != last_ascend_rate) {
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
last_ascend_rate = ascent_velocity(depth, avg_depth, bottom_time);
|
|
}
|
|
if (depth - deltad < 0)
|
|
deltad = depth;
|
|
|
|
clock += TIMESTEP;
|
|
depth -= deltad;
|
|
if (depth <= 5000 && depth >= (5000 - deltad) && safety_stop) {
|
|
plan_add_segment(diveplan, clock - previous_point_time, 5000, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
clock += 180;
|
|
plan_add_segment(diveplan, clock - previous_point_time, 5000, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
safety_stop = false;
|
|
}
|
|
} while (depth > 0);
|
|
plan_add_segment(diveplan, clock - previous_point_time, 0, current_cylinder, po2, false);
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
add_plan_to_notes(diveplan, &displayed_dive, show_disclaimer, error);
|
|
fixup_dc_duration(&displayed_dive.dc);
|
|
|
|
free(stoplevels);
|
|
free(gaschanges);
|
|
return false;
|
|
}
|
|
|
|
if (best_first_ascend_cylinder != current_cylinder) {
|
|
current_cylinder = best_first_ascend_cylinder;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
|
|
#if DEBUG_PLAN & 16
|
|
printf("switch to gas %d (%d/%d) @ %5.2lfm\n", best_first_ascend_cylinder,
|
|
(get_o2(&gas) + 5) / 10, (get_he(&gas) + 5) / 10, gaschanges[best_first_ascend_cylinder].depth / 1000.0);
|
|
#endif
|
|
}
|
|
|
|
// VPM-B or Buehlmann Deco
|
|
tissue_at_end(&displayed_dive, cached_datap);
|
|
previous_deco_time = 100000000;
|
|
deco_time = 10000000;
|
|
cache_deco_state(&bottom_cache); // Lets us make several iterations
|
|
bottom_depth = depth;
|
|
bottom_gi = gi;
|
|
bottom_gas = gas;
|
|
bottom_stopidx = stopidx;
|
|
|
|
//CVA
|
|
do {
|
|
is_final_plan = (decoMode() == BUEHLMANN) || (previous_deco_time - deco_time < 10); // CVA time converges
|
|
if (deco_time != 10000000)
|
|
vpmb_next_gradient(deco_time, diveplan->surface_pressure / 1000.0);
|
|
|
|
previous_deco_time = deco_time;
|
|
restore_deco_state(bottom_cache);
|
|
|
|
depth = bottom_depth;
|
|
gi = bottom_gi;
|
|
clock = previous_point_time = bottom_time;
|
|
gas = bottom_gas;
|
|
stopping = false;
|
|
decodive = false;
|
|
first_stop_depth = 0;
|
|
stopidx = bottom_stopidx;
|
|
breaktime = -1;
|
|
breakcylinder = 0;
|
|
o2time = 0;
|
|
first_ceiling_pressure.mbar = depth_to_mbar(deco_allowed_depth(tissue_tolerance_calc(&displayed_dive,
|
|
depth_to_bar(depth, &displayed_dive)),
|
|
diveplan->surface_pressure / 1000.0,
|
|
&displayed_dive,
|
|
1),
|
|
&displayed_dive);
|
|
if (max_bottom_ceiling_pressure.mbar > first_ceiling_pressure.mbar)
|
|
first_ceiling_pressure.mbar = max_bottom_ceiling_pressure.mbar;
|
|
|
|
last_ascend_rate = ascent_velocity(depth, avg_depth, bottom_time);
|
|
if ((current_cylinder = get_gasidx(&displayed_dive, &gas)) == -1) {
|
|
report_error(translate("gettextFromC", "Can't find gas %s"), gasname(&gas));
|
|
current_cylinder = 0;
|
|
}
|
|
reset_regression();
|
|
while (1) {
|
|
/* We will break out when we hit the surface */
|
|
do {
|
|
/* Ascend to next stop depth */
|
|
int deltad = ascent_velocity(depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (ascent_velocity(depth, avg_depth, bottom_time) != last_ascend_rate) {
|
|
if (is_final_plan)
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
last_ascend_rate = ascent_velocity(depth, avg_depth, bottom_time);
|
|
}
|
|
if (depth - deltad < stoplevels[stopidx])
|
|
deltad = depth - stoplevels[stopidx];
|
|
|
|
add_segment(depth_to_bar(depth, &displayed_dive),
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
TIMESTEP, po2, &displayed_dive, prefs.decosac);
|
|
clock += TIMESTEP;
|
|
depth -= deltad;
|
|
/* Print VPM-Gradient as gradient factor, this has to be done from within deco.c */
|
|
if (decodive)
|
|
plot_depth = depth;
|
|
} while (depth > 0 && depth > stoplevels[stopidx]);
|
|
|
|
if (depth <= 0)
|
|
break; /* We are at the surface */
|
|
|
|
if (gi >= 0 && stoplevels[stopidx] <= gaschanges[gi].depth) {
|
|
/* We have reached a gas change.
|
|
* Record this in the dive plan */
|
|
if (is_final_plan)
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
|
|
/* Check we need to change cylinder.
|
|
* We might not if the cylinder was chosen by the user
|
|
* or user has selected only to switch only at required stops.
|
|
* If current gas is hypoxic, we want to switch asap */
|
|
|
|
if (current_cylinder != gaschanges[gi].gasidx) {
|
|
if (!prefs.switch_at_req_stop ||
|
|
!trial_ascent(depth, stoplevels[stopidx - 1], avg_depth, bottom_time,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix, po2, diveplan->surface_pressure / 1000.0) || get_o2(&displayed_dive.cylinder[current_cylinder].gasmix) < 160) {
|
|
current_cylinder = gaschanges[gi].gasidx;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
#if DEBUG_PLAN & 16
|
|
printf("switch to gas %d (%d/%d) @ %5.2lfm\n", gaschanges[gi].gasidx,
|
|
(get_o2(&gas) + 5) / 10, (get_he(&gas) + 5) / 10, gaschanges[gi].depth / 1000.0);
|
|
#endif
|
|
/* Stop for the minimum duration to switch gas */
|
|
add_segment(depth_to_bar(depth, &displayed_dive),
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
prefs.min_switch_duration, po2, &displayed_dive, prefs.decosac);
|
|
clock += prefs.min_switch_duration;
|
|
if (prefs.doo2breaks && get_o2(&displayed_dive.cylinder[current_cylinder].gasmix) == 1000)
|
|
o2time += prefs.min_switch_duration;
|
|
} else {
|
|
/* The user has selected the option to switch gas only at required stops.
|
|
* Remember that we are waiting to switch gas
|
|
*/
|
|
pendinggaschange = true;
|
|
}
|
|
}
|
|
gi--;
|
|
}
|
|
--stopidx;
|
|
|
|
/* Save the current state and try to ascend to the next stopdepth */
|
|
while (1) {
|
|
/* Check if ascending to next stop is clear, go back and wait if we hit the ceiling on the way */
|
|
if (trial_ascent(depth, stoplevels[stopidx], avg_depth, bottom_time,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix, po2, diveplan->surface_pressure / 1000.0))
|
|
break; /* We did not hit the ceiling */
|
|
|
|
/* Add a minute of deco time and then try again */
|
|
if (!decodive) {
|
|
decodive = true;
|
|
first_stop_depth = depth;
|
|
}
|
|
if (!stopping) {
|
|
/* The last segment was an ascend segment.
|
|
* Add a waypoint for start of this deco stop */
|
|
if (is_final_plan)
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
}
|
|
|
|
/* Are we waiting to switch gas?
|
|
* Occurs when the user has selected the option to switch only at required stops
|
|
*/
|
|
if (pendinggaschange) {
|
|
current_cylinder = gaschanges[gi + 1].gasidx;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
#if DEBUG_PLAN & 16
|
|
printf("switch to gas %d (%d/%d) @ %5.2lfm\n", gaschanges[gi + 1].gasidx,
|
|
(get_o2(&gas) + 5) / 10, (get_he(&gas) + 5) / 10, gaschanges[gi + 1].depth / 1000.0);
|
|
#endif
|
|
/* Stop for the minimum duration to switch gas */
|
|
add_segment(depth_to_bar(depth, &displayed_dive),
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
prefs.min_switch_duration, po2, &displayed_dive, prefs.decosac);
|
|
clock += prefs.min_switch_duration;
|
|
if (prefs.doo2breaks && get_o2(&displayed_dive.cylinder[current_cylinder].gasmix) == 1000)
|
|
o2time += prefs.min_switch_duration;
|
|
pendinggaschange = false;
|
|
}
|
|
|
|
/* Deco stop should end when runtime is at a whole minute */
|
|
int this_decotimestep;
|
|
this_decotimestep = DECOTIMESTEP - clock % DECOTIMESTEP;
|
|
|
|
add_segment(depth_to_bar(depth, &displayed_dive),
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
this_decotimestep, po2, &displayed_dive, prefs.decosac);
|
|
clock += this_decotimestep;
|
|
/* Finish infinite deco */
|
|
if (clock >= 48 * 3600 && depth >= 6000) {
|
|
error = LONGDECO;
|
|
break;
|
|
}
|
|
if (prefs.doo2breaks) {
|
|
/* The backgas breaks option limits time on oxygen to 12 minutes, followed by 6 minutes on
|
|
* backgas (first defined gas). This could be customized if there were demand.
|
|
*/
|
|
if (get_o2(&displayed_dive.cylinder[current_cylinder].gasmix) == 1000) {
|
|
o2time += DECOTIMESTEP;
|
|
if (o2time >= 12 * 60) {
|
|
breaktime = 0;
|
|
breakcylinder = current_cylinder;
|
|
if (is_final_plan)
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
current_cylinder = 0;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
}
|
|
} else {
|
|
if (breaktime >= 0) {
|
|
breaktime += DECOTIMESTEP;
|
|
if (breaktime >= 6 * 60) {
|
|
o2time = 0;
|
|
if (is_final_plan)
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
current_cylinder = breakcylinder;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
breaktime = -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (stopping) {
|
|
/* Next we will ascend again. Add a waypoint if we have spend deco time */
|
|
if (is_final_plan)
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, current_cylinder, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
}
|
|
}
|
|
|
|
deco_time = clock - bottom_time;
|
|
} while (!is_final_plan);
|
|
|
|
plan_add_segment(diveplan, clock - previous_point_time, 0, current_cylinder, po2, false);
|
|
if (decoMode() == VPMB) {
|
|
diveplan->eff_gfhigh = rint(100.0 * regressionb());
|
|
diveplan->eff_gflow = rint(100.0 * (regressiona() * first_stop_depth + regressionb()));
|
|
}
|
|
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
add_plan_to_notes(diveplan, &displayed_dive, show_disclaimer, error);
|
|
fixup_dc_duration(&displayed_dive.dc);
|
|
|
|
free(stoplevels);
|
|
free(gaschanges);
|
|
free(bottom_cache);
|
|
return decodive;
|
|
}
|
|
|
|
/*
|
|
* Get a value in tenths (so "10.2" == 102, "9" = 90)
|
|
*
|
|
* Return negative for errors.
|
|
*/
|
|
static int get_tenths(const char *begin, const char **endp)
|
|
{
|
|
char *end;
|
|
int value = strtol(begin, &end, 10);
|
|
|
|
if (begin == end)
|
|
return -1;
|
|
value *= 10;
|
|
|
|
/* Fraction? We only look at the first digit */
|
|
if (*end == '.') {
|
|
end++;
|
|
if (!isdigit(*end))
|
|
return -1;
|
|
value += *end - '0';
|
|
do {
|
|
end++;
|
|
} while (isdigit(*end));
|
|
}
|
|
*endp = end;
|
|
return value;
|
|
}
|
|
|
|
static int get_permille(const char *begin, const char **end)
|
|
{
|
|
int value = get_tenths(begin, end);
|
|
if (value >= 0) {
|
|
/* Allow a percentage sign */
|
|
if (**end == '%')
|
|
++*end;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
int validate_gas(const char *text, struct gasmix *gas)
|
|
{
|
|
int o2, he;
|
|
|
|
if (!text)
|
|
return 0;
|
|
|
|
while (isspace(*text))
|
|
text++;
|
|
|
|
if (!*text)
|
|
return 0;
|
|
|
|
if (!strcasecmp(text, translate("gettextFromC", "air"))) {
|
|
o2 = O2_IN_AIR;
|
|
he = 0;
|
|
text += strlen(translate("gettextFromC", "air"));
|
|
} else if (!strcasecmp(text, translate("gettextFromC", "oxygen"))) {
|
|
o2 = 1000;
|
|
he = 0;
|
|
text += strlen(translate("gettextFromC", "oxygen"));
|
|
} else if (!strncasecmp(text, translate("gettextFromC", "ean"), 3)) {
|
|
o2 = get_permille(text + 3, &text);
|
|
he = 0;
|
|
} else {
|
|
o2 = get_permille(text, &text);
|
|
he = 0;
|
|
if (*text == '/')
|
|
he = get_permille(text + 1, &text);
|
|
}
|
|
|
|
/* We don't want any extra crud */
|
|
while (isspace(*text))
|
|
text++;
|
|
if (*text)
|
|
return 0;
|
|
|
|
/* Validate the gas mix */
|
|
if (*text || o2 < 1 || o2 > 1000 || he < 0 || o2 + he > 1000)
|
|
return 0;
|
|
|
|
/* Let it rip */
|
|
gas->o2.permille = o2;
|
|
gas->he.permille = he;
|
|
return 1;
|
|
}
|
|
|
|
int validate_po2(const char *text, int *mbar_po2)
|
|
{
|
|
int po2;
|
|
|
|
if (!text)
|
|
return 0;
|
|
|
|
po2 = get_tenths(text, &text);
|
|
if (po2 < 0)
|
|
return 0;
|
|
|
|
while (isspace(*text))
|
|
text++;
|
|
|
|
while (isspace(*text))
|
|
text++;
|
|
if (*text)
|
|
return 0;
|
|
|
|
*mbar_po2 = po2 * 100;
|
|
return 1;
|
|
}
|