mobile/dive summary: rewrite statistics code

There were quite a few issues with the code - clearly a complete failure of
code review.

- all values were '??' if a period contained no dives
- imperial units were not calculated at all
- significant truncation and data loss in the way totals were added as meters
  and minutes instead of the higher precision data that is available
- several issues in striing conversion methodology, e.g. missing zero padding
  for minutes
- missing maxSac
- incorrectly calculated avgSac
- incorrectly claculated number of EANx dives
- hard to read code with most variables named 'temp'

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2020-01-29 11:26:22 +02:00
parent a534f1a25c
commit 08e39f9d2d
3 changed files with 78 additions and 60 deletions

View file

@ -9,9 +9,9 @@ QStringList diveSummary::diveSummaryText;
timestamp_t diveSummary::firstDive, diveSummary::lastDive;
int diveSummary::dives[2], diveSummary::divesEAN[2], diveSummary::divesDeep[2], diveSummary::diveplans[2];
long diveSummary::divetime[2], diveSummary::depth[2], diveSummary::sac[2];
long diveSummary::divetimeMax[2], diveSummary::depthMax[2], diveSummary::sacMin[2];
int diveSummary::divesSAC[2];
long diveSummary::divetime[2], diveSummary::depth[2];
long diveSummary::divetimeMax[2], diveSummary::depthMax[2], diveSummary::sacMin[2], diveSummary::sacMax[2];
long diveSummary::totalSACTime[2], diveSummary::totalSacVolume[2];
void diveSummary::summaryCalculation(int primaryPeriod, int secondaryPeriod)
{
@ -28,12 +28,12 @@ void diveSummary::summaryCalculation(int primaryPeriod, int secondaryPeriod)
// prepare stringlist
diveSummaryText.clear();
diveSummaryText << "??" << "??" << "??" << "??" << "??" <<
diveSummaryText << "??" << "??" << QObject::tr("no dives in period") << QObject::tr("no divies in period") << "??" <<
"??" << "??" << "??" <<
"?:??" << "?:??" << "?:??" <<
"?:??" << "?:??" << "?:??" <<
"??" << "??" << "??" << "??" << "??" <<
"??" << "??" << "??" << "??" << "??";
"??" << "??" << "??" << "??" << "??" << "??" << "??";
// set oldest/newest date
if (firstDive) {
@ -62,10 +62,11 @@ void diveSummary::loopDives(timestamp_t primaryStart, timestamp_t secondaryStart
dives[0] = dives[1] = divesEAN[0] = divesEAN[1] = 0;
divesDeep[0] = divesDeep[1] = diveplans[0] = diveplans[1] = 0;
divetime[0] = divetime[1] = depth[0] = depth[1] = 0;
sac[0] = sac[1] = 0;
divetimeMax[0] = divetimeMax[1] = depthMax[0] = depthMax[1] = 0;
sacMin[0] = sacMin[1] = 99999;
divesSAC[0] = divesSAC[1] = 0;
sacMax[0] = sacMax[1] = 0;
totalSACTime[0] = totalSACTime[1] = 0;
totalSacVolume[0] = totalSacVolume[1] = 0;
for_each_dive (i, dive) {
// remember time of oldest and newest dive
@ -94,48 +95,66 @@ void diveSummary::loopDives(timestamp_t primaryStart, timestamp_t secondaryStart
void diveSummary::calculateDive(int inx, struct dive *dive)
{
long temp;
// one more real dive
dives[inx]++;
// sum dive in minutes and check for new max.
temp = dive->duration.seconds / 60;
divetime[inx] += temp;
if (temp > divetimeMax[inx])
divetimeMax[inx] = temp;
divetime[inx] += dive->duration.seconds;
if (dive->duration.seconds > divetimeMax[inx])
divetimeMax[inx] = dive->duration.seconds;
// sum depth in meters, check for new max. and if dive is a deep dive
temp = dive->maxdepth.mm / 1000;
depth[inx] += temp;
if (temp > depthMax[inx])
depthMax[inx] = temp;
if (temp > 39)
depth[inx] += dive->maxdepth.mm;
if (dive->maxdepth.mm > depthMax[inx])
depthMax[inx] = dive->maxdepth.mm;
if (dive->maxdepth.mm > 39000)
divesDeep[inx]++;
// sum SAC in liters, check for new max.
temp = dive->sac / 1000;
if (temp) {
divesSAC[inx]++;
sac[inx] += temp;
if (temp < sacMin[inx])
sacMin[inx] = temp;
// sum SAC, check for new min/max.
if (dive->sac) {
totalSACTime[inx] += dive->duration.seconds;
totalSacVolume[inx] += dive->sac * dive->duration.seconds;
if (dive->sac < sacMin[inx])
sacMin[inx] = dive->sac;
if (dive->sac > sacMax[inx])
sacMax[inx] = dive->sac;
}
// EAN dive ?
for (int j = 0; j < dive->cylinders.nr; ++j) {
if (dive->cylinders.cylinders[j].gasmix.o2.permille > 210)
if (dive->cylinders.cylinders[j].gasmix.o2.permille > 210) {
divesEAN[inx]++;
break;
}
}
}
static QString timeString(long duration)
{
long hours = duration / 3600;
long minutes = (duration - hours * 3600) / 60;
if (hours >= 100)
return QStringLiteral("%1h").arg(hours);
else
return QStringLiteral("%1:%2").arg(hours).arg(minutes, 2, 10, QChar('0'));
}
static QString depthString(long depth)
{
return QString("%1").arg((qPrefUnits::length() == units::METERS) ? depth / 1000 : lrint(mm_to_feet(depth)));
}
static QString volumeString(long volume)
{
return QString("%1").arg((qPrefUnits::volume() == units::LITER) ? volume / 1000 : round(100.0 * ml_to_cuft(volume)) / 100.0);
}
void diveSummary::buildStringList(int inx)
{
int temp1, temp2;
QString tempStr;
if (!dives[inx])
if (!dives[inx]) {
diveSummaryText[2+inx] = QObject::tr("no dives in period");
return;
}
// dives
diveSummaryText[2+inx] = QStringLiteral("%1").arg(dives[inx]);
@ -143,34 +162,23 @@ void diveSummary::buildStringList(int inx)
diveSummaryText[6+inx] = QStringLiteral("%1").arg(divesDeep[inx]);
// time
temp1 = divetime[inx] / 60;
temp2 = divetime[inx] - temp1 * 60;
if (temp1 >= 100)
diveSummaryText[8+inx] = QStringLiteral("%1h").arg(temp1);
else
diveSummaryText[8+inx] = QStringLiteral("%1:%2").arg(temp1).arg(temp2);
temp1 = divetimeMax[inx] / 60;
temp2 = divetimeMax[inx] - temp1 * 60;
diveSummaryText[10+inx] = QStringLiteral("%1:%2").arg(temp1).arg(temp2);
temp2 = divetime[inx] / dives[inx];
temp1 = temp2 / 60;
temp2 = temp2 - temp1 * 60;
diveSummaryText[12+inx] = QStringLiteral("%1:%2").arg(temp1).arg(temp2);
diveSummaryText[8+inx] = timeString(divetime[inx]);
diveSummaryText[10+inx] = timeString(divetimeMax[inx]);
diveSummaryText[12+inx] = timeString(divetime[inx] / dives[inx]);
// depth
tempStr = (qPrefUnits::length() == units::METERS) ? "m" : "ft";
diveSummaryText[14+inx] = QStringLiteral("%1%2").arg(depthMax[inx]).arg(tempStr);
temp1 = depth[inx] / dives[inx];
diveSummaryText[16+inx] = QStringLiteral("%1%2").arg(temp1).arg(tempStr);
QString unitText = (qPrefUnits::length() == units::METERS) ? " m" : " ft";
diveSummaryText[14+inx] = depthString(depthMax[inx]) + unitText;
diveSummaryText[16+inx] = depthString(depth[inx] / dives[inx]) + unitText;
// SAC
tempStr = (qPrefUnits::volume() == units::LITER) ? "l/min" : "cuft/min";
diveSummaryText[18+inx] = QStringLiteral("%1 %2").arg(sacMin[inx]).arg(tempStr);
if (divesSAC[inx]) {
temp1 = depth[inx] / divesSAC[inx];
diveSummaryText[20+inx] = QStringLiteral("%1%2").arg(temp1).arg(tempStr);
}
unitText = (qPrefUnits::volume() == units::LITER) ? " l/min" : " cuft/min";
diveSummaryText[18+inx] = volumeString(sacMin[inx]) + unitText;
diveSummaryText[20+inx] = volumeString(sacMax[inx]) + unitText;
// finally the weighted average
long avgSac = totalSacVolume[inx] / totalSACTime[inx];
diveSummaryText[22+inx] = volumeString(avgSac) + unitText;
// Diveplan(s)
diveSummaryText[22+inx] = QStringLiteral("%1").arg(diveplans[inx]);
diveSummaryText[24+inx] = QStringLiteral("%1").arg(diveplans[inx]);
}

View file

@ -21,9 +21,9 @@ private:
static timestamp_t firstDive, lastDive;
static int dives[2], divesEAN[2], divesDeep[2], diveplans[2];
static long divetime[2], depth[2], sac[2];
static long divetimeMax[2], depthMax[2], sacMin[2];
static long divetime[2], depth[2];
static long divetimeMax[2], depthMax[2], sacMin[2], sacMax[2];
static long divetimeAvg[2], depthAvg[2], sacAvg[2];
static int divesSAC[2];
static long totalSACTime[2], totalSacVolume[2];
};
#endif // DIVESUMMARY_H

View file

@ -181,7 +181,7 @@ Kirigami.ScrollablePage {
text: Backend.diveSummaryText[19]
}
TemplateLabel {
text: qsTr("avg. SAC")
text: qsTr("max. SAC")
font.bold: true
}
TemplateLabel {
@ -190,6 +190,16 @@ Kirigami.ScrollablePage {
TemplateLabel {
text: Backend.diveSummaryText[21]
}
TemplateLabel {
text: qsTr("avg. SAC")
font.bold: true
}
TemplateLabel {
text: Backend.diveSummaryText[22]
}
TemplateLabel {
text: Backend.diveSummaryText[23]
}
TemplateLabel {
Layout.columnSpan: 3
@ -200,10 +210,10 @@ Kirigami.ScrollablePage {
font.bold: true
}
TemplateLabel {
text: Backend.diveSummaryText[22]
text: Backend.diveSummaryText[24]
}
TemplateLabel {
text: Backend.diveSummaryText[23]
text: Backend.diveSummaryText[25]
}
}