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912560f928
The pressure graph will go from 0 to negative - one could make a weak argument that this would at least tell you how much pressure you'd need in the cylinder to start with, but that's kinda lame. Fixes #615 Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
1038 lines
32 KiB
C
1038 lines
32 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 "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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#define TIMESTEP 3 /* second */
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#define DECOTIMESTEP 60 /* seconds. Unit of deco stop times */
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int decostoplevels[] = { 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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double plangflow, plangfhigh;
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bool plan_verbatim = false, plan_display_runtime = true, plan_display_duration = false, plan_display_transitions = false;
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const char *disclaimer;
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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 + 1900, 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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void set_last_stop(bool last_stop_6m)
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{
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if (last_stop_6m == true)
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decostoplevels[1] = 6000;
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else
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decostoplevels[1] = 3000;
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}
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void set_verbatim(bool verbatim)
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{
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plan_verbatim = verbatim;
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}
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void set_display_runtime(bool display)
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{
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plan_display_runtime = display;
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}
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void set_display_duration(bool display)
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{
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plan_display_duration = display;
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}
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void set_display_transitions(bool display)
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{
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plan_display_transitions = display;
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}
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void get_gas_from_events(struct divecomputer *dc, int time, struct gasmix *gas)
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{
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// we don't modify the values passed in if nothing is found
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// so don't call with uninitialized gasmix !
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struct event *event = dc->events;
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while (event && event->time.seconds <= time) {
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if (!strcmp(event->name, "gaschange"))
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*gas = *get_gasmix_from_event(event);
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event = event->next;
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}
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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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int gasidx = -1;
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while (++gasidx < MAX_CYLINDERS)
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if (gasmix_distance(&dive->cylinder[gasidx].gasmix, mix) < 200)
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return gasidx;
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return -1;
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}
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double interpolate_transition(struct dive *dive, int t0, int t1, int d0, int d1, const struct gasmix *gasmix, int po2)
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{
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int j;
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double tissue_tolerance = 0.0;
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for (j = t0; j < t1; j++) {
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int depth = interpolate(d0, d1, j - t0, t1 - t0);
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tissue_tolerance = add_segment(depth_to_mbar(depth, dive) / 1000.0, gasmix, 1, po2, dive);
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}
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return tissue_tolerance;
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}
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/* returns the tissue tolerance at the end of this (partial) dive */
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double 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, t0, t1, gasidx, lastdepth;
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double tissue_tolerance;
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struct gasmix gas;
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if (!dive)
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return 0.0;
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if (*cached_datap) {
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tissue_tolerance = restore_deco_state(*cached_datap);
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} else {
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tissue_tolerance = init_decompression(dive);
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cache_deco_state(tissue_tolerance, 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 tissue_tolerance;
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psample = sample = dc->sample;
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lastdepth = t0 = 0;
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/* we always start with gas 0 (unless an event tells us otherwise) */
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gas = dive->cylinder[0].gasmix;
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for (i = 0; i < dc->samples; i++, sample++) {
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t1 = sample->time.seconds;
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get_gas_from_events(&dive->dc, t0, &gas);
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if ((gasidx = get_gasidx(dive, &gas)) == -1) {
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report_error(translate("gettextFromC", "Can't find gas %s"), gasname(&gas));
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gasidx = 0;
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}
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if (i > 0)
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lastdepth = psample->depth.mm;
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tissue_tolerance = interpolate_transition(dive, t0, t1, lastdepth, sample->depth.mm, &dive->cylinder[gasidx].gasmix, sample->po2.mbar);
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psample = sample;
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t0 = t1;
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}
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return tissue_tolerance;
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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, 1);
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}
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/* make sure that the gas we are switching to is represented in our
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* list of cylinders */
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static int verify_gas_exists(struct gasmix mix_in)
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{
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int i;
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cylinder_t *cyl;
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for (i = 0; i < MAX_CYLINDERS; i++) {
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cyl = displayed_dive.cylinder + i;
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if (cylinder_nodata(cyl))
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continue;
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if (gasmix_distance(&cyl->gasmix, &mix_in) < 200)
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return i;
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}
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fprintf(stderr, "this gas %s should have been on the cylinder list\nThings will fail now\n", gasname(&mix_in));
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return -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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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;
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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;
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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 gasmix oldgasmix;
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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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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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// 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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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[0];
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oldgasmix = cyl->gasmix;
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sample = prepare_sample(dc);
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sample->po2.mbar = dp->po2;
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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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finish_sample(dc);
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while (dp) {
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struct gasmix gasmix = dp->gasmix;
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int po2 = dp->po2;
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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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if (verify_gas_exists(gasmix) < 0)
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goto gas_error_exit;
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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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if (lasttime)
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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, "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 (gasmix_distance(&gasmix, &oldgasmix) > 0) {
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int idx;
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if ((idx = verify_gas_exists(gasmix)) < 0)
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goto gas_error_exit;
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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, idx);
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cyl = &displayed_dive.cylinder[idx];
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sample = prepare_sample(dc);
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sample[-1].po2.mbar = po2;
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sample->time.seconds = lasttime + 1;
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sample->depth.mm = lastdepth;
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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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oldgasmix = gasmix;
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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].po2.mbar = po2;
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sample->po2.mbar = po2;
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sample->time.seconds = lasttime = time;
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sample->depth.mm = lastdepth = depth;
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if (track_gas) {
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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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#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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gas_error_exit:
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report_error(translate("gettextFromC", "Too many gas mixes"));
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return;
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}
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void free_dps(struct divedatapoint *dp)
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{
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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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}
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struct divedatapoint *create_dp(int time_incr, int depth, struct gasmix gasmix, 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->gasmix = gasmix;
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dp->po2 = 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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struct divedatapoint *get_nth_dp(struct diveplan *diveplan, int idx)
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{
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struct divedatapoint **ldpp, *dp = diveplan->dp;
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int i = 0;
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struct gasmix air = { };
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ldpp = &diveplan->dp;
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while (dp && i++ < idx) {
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ldpp = &dp->next;
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dp = dp->next;
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}
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while (i++ <= idx) {
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*ldpp = dp = create_dp(0, 0, air, 0);
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ldpp = &((*ldpp)->next);
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}
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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, struct gasmix gasmix, int po2, bool entered)
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{
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struct divedatapoint *dp = create_dp(duration, depth, gasmix, 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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struct gasmix gas;
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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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while (dp) {
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if (dp->time == 0) {
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gas = dp->gasmix;
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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 = get_gasidx(&displayed_dive, &gas);
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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 = get_gasidx(&displayed_dive, &gas);
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}
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}
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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;
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printf("gaschange nr %d: @ %5.2lfm gasidx %d (%s)\n", nr, gaschanges[nr].depth / 1000.0,
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idx, gasname(&displayed_dive.cylinder[idx].gasmix));
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}
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#endif
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return gaschanges;
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}
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/* sort all the stops into one ordered list */
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static unsigned int *sort_stops(int *dstops, int dnr, struct gaschanges *gstops, int gnr)
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{
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int i, gi, di;
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int total = dnr + gnr;
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int *stoplevels = malloc(total * sizeof(int));
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/* no gaschanges */
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if (gnr == 0) {
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memcpy(stoplevels, dstops, dnr * sizeof(int));
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return stoplevels;
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}
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i = total - 1;
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gi = gnr - 1;
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di = dnr - 1;
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while (i >= 0) {
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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;
|
|
}
|
|
|
|
static void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool show_disclaimer)
|
|
{
|
|
char buffer[20000], temp[1000];
|
|
int len, lastdepth = 0, lasttime = 0;
|
|
struct divedatapoint *dp = diveplan->dp;
|
|
bool gaschange = !plan_verbatim;
|
|
struct divedatapoint *nextdp = NULL;
|
|
|
|
disclaimer = translate("gettextFromC", "DISCLAIMER / WARNING: THIS IS A NEW IMPLEMENTATION OF THE BUHLMANN "
|
|
"ALGORITHM AND A DIVE PLANNER IMPLEMENTION 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.");
|
|
|
|
if (!dp)
|
|
return;
|
|
|
|
len = show_disclaimer ? snprintf(buffer, sizeof(buffer), "<div><b>%s<b></div><br>", disclaimer) : 0;
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "based on GFlow = %d and GFhigh = %d"),
|
|
diveplan->gflow, diveplan->gfhigh);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><b>%s</b><br>%s</div><br>",
|
|
translate("gettextFromC", "Subsurface dive plan"), temp);
|
|
|
|
if (!plan_verbatim) {
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><table><thead><tr><th>%s</th>",
|
|
translate("gettextFromC", "depth"));
|
|
if (plan_display_runtime)
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<th style='padding-left: 10px;'>%s</th>",
|
|
translate("gettextFromC", "runtime"));
|
|
if (plan_display_duration)
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<th style='padding-left: 10px;'>%s</th>",
|
|
translate("gettextFromC", "duration"));
|
|
len += snprintf(buffer + len, sizeof(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;
|
|
|
|
if (dp->time == 0)
|
|
continue;
|
|
gasmix = dp->gasmix;
|
|
depthvalue = get_depth_units(dp->depth, &decimals, &depth_unit);
|
|
/* analyze the dive points ahead */
|
|
nextdp = dp->next;
|
|
while (nextdp && nextdp->time == 0)
|
|
nextdp = nextdp->next;
|
|
if (nextdp)
|
|
newgasmix = nextdp->gasmix;
|
|
/* do we want to skip this leg as it is devoid of anything useful? */
|
|
if (!dp->entered &&
|
|
gasmix_distance(&gasmix, &newgasmix) == 0 &&
|
|
nextdp &&
|
|
dp->depth != lastdepth &&
|
|
nextdp->depth != dp->depth)
|
|
continue;
|
|
if (dp->time - lasttime < 10 && !(gaschange && dp->next && dp->depth != dp->next->depth))
|
|
continue;
|
|
|
|
len = strlen(buffer);
|
|
if (nextdp && gasmix_distance(&gasmix, &newgasmix))
|
|
gaschange = true;
|
|
if (plan_verbatim) {
|
|
if (dp->depth != lastdepth) {
|
|
if (plan_display_transitions || dp->entered || !dp->next || (gaschange && dp->next && dp->depth != nextdp->depth)) {
|
|
snprintf(temp, sizeof(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, sizeof(buffer) - len, "%s<br>", temp);
|
|
lasttime = dp->time;
|
|
}
|
|
} else {
|
|
if (dp->depth != nextdp->depth) {
|
|
snprintf(temp, sizeof(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, sizeof(buffer) - len, "%s<br>", temp);
|
|
lasttime = dp->time;
|
|
}
|
|
}
|
|
} else {
|
|
if ((dp->depth == lastdepth && dp->depth != nextdp->depth) || plan_display_transitions || dp->entered || !dp->next || (gaschange && dp->next && dp->depth != nextdp->depth)) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%3.0f%s"), depthvalue, depth_unit);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<tr><td style='padding-left: 10px; float: right;'>%s</td>", temp);
|
|
if (plan_display_runtime) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%3dmin"), (dp->time + 30) / 60);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
|
|
}
|
|
if (plan_display_duration) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%3dmin"), (dp->time - lasttime + 30) / 60);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
|
|
}
|
|
if (gaschange) {
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td style='padding-left: 10px; color: red; float: left;'><b>%s</b></td>", gasname(&newgasmix));
|
|
gaschange = false;
|
|
} else {
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td> </td>");
|
|
}
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "</tr>");
|
|
lasttime = dp->time;
|
|
}
|
|
}
|
|
if (gaschange) {
|
|
// gas switch at this waypoint
|
|
if (plan_verbatim) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "Switch gas to %s"), gasname(&newgasmix));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "%s<br>", temp);
|
|
gaschange = false;
|
|
}
|
|
gasmix = newgasmix;
|
|
}
|
|
lastdepth = dp->depth;
|
|
} while ((dp = nextdp) != NULL);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "</tbody></table></div>");
|
|
|
|
dive->cns = 0;
|
|
dive->maxcns = 0;
|
|
update_cylinder_related_info(dive);
|
|
snprintf(temp, sizeof(temp), "%s", translate("gettextFromC", "CNS"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><br>%s: %i%%", temp, dive->cns);
|
|
snprintf(temp, sizeof(temp), "%s", translate("gettextFromC", "OTU"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<br>%s: %i</div>", temp, dive->otu);
|
|
|
|
snprintf(temp, sizeof(temp), "%s", translate("gettextFromC", "Gas consumption:"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><br>%s<br>", temp);
|
|
for (int gasidx = 0; gasidx < MAX_CYLINDERS; gasidx++) {
|
|
double volume, pressure, deco_volume, deco_pressure;
|
|
const char *unit, *pressure_unit;
|
|
char warning[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) {
|
|
deco_pressure = get_pressure_units(1000.0 * cyl->deco_gas_used.mliter / cyl->type.size.mliter, &pressure_unit);
|
|
pressure = get_pressure_units(1000.0 * cyl->gas_used.mliter / cyl->type.size.mliter, &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), " — <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 < (float) cyl->deco_gas_used.mliter)
|
|
snprintf(warning, sizeof(warning), " — <span style='color: red;'>%s </span> %s",
|
|
translate("gettextFromC", "Warning:"),
|
|
translate("gettextFromC", "not enough reserve for gas sharing on ascent!"));
|
|
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%.0f%s/%.0f%s of %s (%.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, sizeof(temp), translate("gettextFromC", "%.0f%s (%.0f%s during planned ascent) of %s"), volume, unit, deco_volume, unit, gasname(&cyl->gasmix));
|
|
}
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "%s%s<br>", temp, warning);
|
|
}
|
|
dp = diveplan->dp;
|
|
while (dp) {
|
|
if (dp->time != 0) {
|
|
int pO2 = depth_to_atm(dp->depth, dive) * get_o2(&dp->gasmix);
|
|
|
|
if (pO2 > (dp->entered ? prefs.bottompo2 : prefs.decopo2)) {
|
|
const char *depth_unit;
|
|
int decimals;
|
|
double depth_value = get_depth_units(dp->depth, &decimals, &depth_unit);
|
|
len = strlen(buffer);
|
|
snprintf(temp, sizeof(temp),
|
|
translate("gettextFromC", "high pO₂ value %.2f at %d:%02u with gas %s at depth %.*f %s"),
|
|
pO2 / 1000.0, FRACTION(dp->time, 60), gasname(&dp->gasmix), decimals, depth_value, depth_unit);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<span style='color: red;'>%s </span> %s<br>",
|
|
translate("gettextFromC", "Warning:"), temp);
|
|
}
|
|
}
|
|
dp = dp->next;
|
|
}
|
|
snprintf(buffer + len, sizeof(buffer) - len, "</div>");
|
|
dive->notes = strdup(buffer);
|
|
}
|
|
|
|
int ascend_velocity(int depth, int avg_depth, int 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 plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool show_disclaimer)
|
|
{
|
|
struct sample *sample;
|
|
int po2;
|
|
int transitiontime, gi;
|
|
int current_cylinder;
|
|
unsigned int stopidx;
|
|
int depth;
|
|
double tissue_tolerance = 0.0;
|
|
struct gaschanges *gaschanges = NULL;
|
|
int gaschangenr;
|
|
int *stoplevels = NULL;
|
|
char *trial_cache = NULL;
|
|
bool stopping = false;
|
|
bool clear_to_ascend;
|
|
int clock, previous_point_time;
|
|
int avg_depth, bottom_time = 0;
|
|
int last_ascend_rate;
|
|
int best_first_ascend_cylinder;
|
|
struct gasmix gas;
|
|
int o2time = 0;
|
|
int breaktime = -1;
|
|
int breakcylinder;
|
|
|
|
set_gf(diveplan->gflow, diveplan->gfhigh, prefs.gf_low_at_maxdepth);
|
|
if (!diveplan->surface_pressure)
|
|
diveplan->surface_pressure = SURFACE_PRESSURE;
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
|
|
/* Let's start at the last 'sample', i.e. the last manually entered waypoint. */
|
|
sample = &displayed_dive.dc.sample[displayed_dive.dc.samples - 1];
|
|
/* we start with gas 0, then check if that was changed */
|
|
gas = displayed_dive.cylinder[0].gasmix;
|
|
get_gas_from_events(&displayed_dive.dc, sample->time.seconds, &gas);
|
|
po2 = displayed_dive.dc.sample[displayed_dive.dc.samples - 1].po2.mbar;
|
|
if ((current_cylinder = get_gasidx(&displayed_dive, &gas)) == -1) {
|
|
report_error(translate("gettextFromC", "Can't find gas %s"), gasname(&gas));
|
|
current_cylinder = 0;
|
|
}
|
|
depth = displayed_dive.dc.sample[displayed_dive.dc.samples - 1].depth.mm;
|
|
avg_depth = average_depth(diveplan);
|
|
last_ascend_rate = ascend_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, gas, po2, false);
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
return;
|
|
}
|
|
|
|
tissue_tolerance = tissue_at_end(&displayed_dive, cached_datap);
|
|
|
|
#if DEBUG_PLAN & 4
|
|
printf("gas %s\n", gasname(&gas));
|
|
printf("depth %5.2lfm \n", depth / 1000.0);
|
|
#endif
|
|
|
|
best_first_ascend_cylinder = current_cylinder;
|
|
/* Find the gases available for deco */
|
|
gaschanges = analyze_gaslist(diveplan, &gaschangenr, depth, &best_first_ascend_cylinder);
|
|
/* Find the first potential decostopdepth above current depth */
|
|
for (stopidx = 0; stopidx < sizeof(decostoplevels) / sizeof(int); 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;
|
|
|
|
if (best_first_ascend_cylinder != current_cylinder) {
|
|
stopping = true;
|
|
|
|
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
|
|
}
|
|
while (1) {
|
|
/* We will break out when we hit the surface */
|
|
do {
|
|
/* Ascend to next stop depth */
|
|
int deltad = ascend_velocity(depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (ascend_velocity(depth, avg_depth, bottom_time) != last_ascend_rate) {
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
last_ascend_rate = ascend_velocity(depth, avg_depth, bottom_time);
|
|
}
|
|
if (depth - deltad < stoplevels[stopidx])
|
|
deltad = depth - stoplevels[stopidx];
|
|
|
|
tissue_tolerance = add_segment(depth_to_mbar(depth, &displayed_dive) / 1000.0,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
TIMESTEP, po2, &displayed_dive);
|
|
clock += TIMESTEP;
|
|
depth -= deltad;
|
|
} while (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 */
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
|
|
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
|
|
gi--;
|
|
}
|
|
|
|
--stopidx;
|
|
|
|
/* Save the current state and try to ascend to the next stopdepth */
|
|
int trial_depth = depth;
|
|
cache_deco_state(tissue_tolerance, &trial_cache);
|
|
while (1) {
|
|
/* Check if ascending to next stop is clear, go back and wait if we hit the ceiling on the way */
|
|
clear_to_ascend = true;
|
|
while (trial_depth > stoplevels[stopidx]) {
|
|
int deltad = ascend_velocity(trial_depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (deltad > trial_depth) /* don't test against depth above surface */
|
|
deltad = trial_depth;
|
|
tissue_tolerance = add_segment(depth_to_mbar(trial_depth, &displayed_dive) / 1000.0,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
TIMESTEP, po2, &displayed_dive);
|
|
if (deco_allowed_depth(tissue_tolerance, diveplan->surface_pressure / 1000.0, &displayed_dive, 1) > trial_depth - deltad) {
|
|
/* We should have stopped */
|
|
clear_to_ascend = false;
|
|
break;
|
|
}
|
|
trial_depth -= deltad;
|
|
}
|
|
restore_deco_state(trial_cache);
|
|
|
|
if (clear_to_ascend)
|
|
break; /* We did not hit the ceiling */
|
|
|
|
/* Add a minute of deco time and then try again */
|
|
if (!stopping) {
|
|
/* The last segment was an ascend segment.
|
|
* Add a waypoint for start of this deco stop */
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
}
|
|
tissue_tolerance = add_segment(depth_to_mbar(depth, &displayed_dive) / 1000.0,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
DECOTIMESTEP, po2, &displayed_dive);
|
|
cache_deco_state(tissue_tolerance, &trial_cache);
|
|
clock += DECOTIMESTEP;
|
|
if (prefs.doo2breaks) {
|
|
if (get_o2(&displayed_dive.cylinder[current_cylinder].gasmix) == 1000) {
|
|
o2time += DECOTIMESTEP;
|
|
if (o2time >= 12 * 60) {
|
|
breaktime = 0;
|
|
breakcylinder = current_cylinder;
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, 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;
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
current_cylinder = breakcylinder;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
breaktime = -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
trial_depth = depth;
|
|
}
|
|
if (stopping) {
|
|
/* Next we will ascend again. Add a waypoint if we have spend deco time */
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
}
|
|
}
|
|
|
|
/* We made it to the surface */
|
|
plan_add_segment(diveplan, clock - previous_point_time, 0, gas, po2, false);
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
add_plan_to_notes(diveplan, &displayed_dive, show_disclaimer);
|
|
|
|
free(stoplevels);
|
|
free(gaschanges);
|
|
}
|
|
|
|
/*
|
|
* 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 (!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;
|
|
}
|