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core: implement interpolate() function for unit types

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Calls the global interpolate() function for integer types.

For now, the template is enabled if the arguments are not
integer types. Might want to refine that in the future.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2024-12-14 09:49:31 +01:00 • committed by Michael Keller
parent 1ccfb823f0
commit 0e77dd9a68
4 changed files with 22 additions and 4 deletions
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2
core/divelist.cpp
View file

@ -432,7 +432,7 @@ static void add_dive_to_deco(struct deco_state *ds, const struct dive &dive, boo
int j;
for (j = t0; j < t1; j++) {
depth_t depth = { .mm = interpolate(psample.depth.mm, sample.depth.mm, j - t0, t1 - t0) };
depth_t depth = interpolate(psample.depth, sample.depth, j - t0, t1 - t0);
auto gasmix = loop.at(j).first;
add_segment(ds, dive.depth_to_bar(depth), gasmix, 1, sample.setpoint.mbar,
loop_d.at(j), dive.sac,

2
core/planner.cpp
View file

@ -104,7 +104,7 @@ static void interpolate_transition(struct deco_state *ds, struct dive *dive, dur
int32_t j;
for (j = t0.seconds; j < t1.seconds; j++) {
depth_t depth = depth_t { .mm = interpolate(d0.mm, d1.mm, j - t0.seconds, t1.seconds - t0.seconds) };
depth_t depth = interpolate(d0, d1, j - t0.seconds, t1.seconds - t0.seconds);
add_segment(ds, dive->depth_to_bar(depth), gasmix, 1, po2.mbar, divemode, prefs.bottomsac, true);
}
if (d1.mm > d0.mm)

5
core/profile.cpp
View file

@ -876,6 +876,7 @@ static void calculate_deco_information(struct deco_state *ds, const struct deco_
int time_stepsize = 20;
depth_t max_ceiling;
depth_t depth { .mm = entry.depth };
depth_t prev_depth { .mm = prev.depth };
divemode_t current_divemode = loop_d.at(entry.sec);
struct gasmix gasmix = loop.at(t1).first;
@ -888,7 +889,7 @@ static void calculate_deco_information(struct deco_state *ds, const struct deco_
if (t0 != t1 && t1 - t0 < time_stepsize)
time_stepsize = t1 - t0;
for (int j = t0 + time_stepsize; j <= t1; j += time_stepsize) {
depth_t new_depth { .mm = interpolate(prev.depth, depth.mm, j - t0, t1 - t0) };
depth_t new_depth = interpolate(prev_depth, depth, j - t0, t1 - t0);
add_segment(ds, dive->depth_to_bar(new_depth),
gasmix, time_stepsize, entry.o2pressure.mbar, current_divemode, entry.sac, in_planner);
entry.icd_warning = ds->icd_warning;
@ -915,7 +916,7 @@ static void calculate_deco_information(struct deco_state *ds, const struct deco_
/* If using VPM-B, take first_ceiling_pressure as the deepest ceiling */
if (decoMode(in_planner) == VPMB) {
if (current_ceiling.mm >= first_ceiling.mm ||
(time_deep_ceiling == t0 && depth.mm == prev.depth)) {
(time_deep_ceiling == t0 && depth.mm == prev_depth.mm)) {
time_deep_ceiling = t1;
first_ceiling = current_ceiling;
ds->first_ceiling_pressure.mbar = dive->depth_to_mbar(first_ceiling);

17
core/units.h
View file

@ -2,6 +2,8 @@
#ifndef UNITS_H
#define UNITS_H
#include "interpolate.h"
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846
@ -86,6 +88,12 @@
* _permille -> fraction_t in ‰
* _percent -> fraction_t in %
*
* For now, addition and subtraction of values of the same type
* are supported.
*
* A free standing interpolate() function can be used to interpolate
* between types of the same kind (see also the interpolate.h header).
*
* We don't actually use these all yet, so maybe they'll change, but
* I made a number of types as guidelines.
*/
@ -140,6 +148,15 @@ struct unit_base {
}
};
template <typename T,
std::enable_if_t<!std::is_integral<T>::value, bool> = true>
T interpolate(T a, T b, int part, int whole)
{
return T::from_base(
interpolate(a.get_base(), b.get_base(), part, whole)
);
}
struct duration_t : public unit_base<duration_t>
{
int32_t seconds = 0; // durations up to 34 yrs