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Sean C. Rhea
179
src/BestIntervalDialog.cpp
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179
src/BestIntervalDialog.cpp
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/*
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* Copyright (c) 2008 Sean C. Rhea (srhea@srhea.net)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "BestIntervalDialog.h"
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#include "MainWindow.h"
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#include "RideFile.h"
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#include <QMap>
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#include <assert.h>
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#include <math.h>
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BestIntervalDialog::BestIntervalDialog(MainWindow *mainWindow) :
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mainWindow(mainWindow)
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{
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setAttribute(Qt::WA_DeleteOnClose);
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setWindowTitle("Find Best Intervals");
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QVBoxLayout *mainLayout = new QVBoxLayout(this);
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QHBoxLayout *intervalLengthLayout = new QHBoxLayout;
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QLabel *intervalLengthLabel = new QLabel(tr("Interval length: "), this);
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intervalLengthLayout->addWidget(intervalLengthLabel);
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hrsSpinBox = new QDoubleSpinBox(this);
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hrsSpinBox->setDecimals(0);
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hrsSpinBox->setMinimum(0.0);
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hrsSpinBox->setSuffix(" hrs");
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hrsSpinBox->setSingleStep(1.0);
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hrsSpinBox->setAlignment(Qt::AlignRight);
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intervalLengthLayout->addWidget(hrsSpinBox);
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minsSpinBox = new QDoubleSpinBox(this);
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minsSpinBox->setDecimals(0);
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minsSpinBox->setRange(0.0, 59.0);
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minsSpinBox->setSuffix(" mins");
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minsSpinBox->setSingleStep(1.0);
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minsSpinBox->setWrapping(true);
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minsSpinBox->setAlignment(Qt::AlignRight);
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minsSpinBox->setValue(1.0);
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intervalLengthLayout->addWidget(minsSpinBox);
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secsSpinBox = new QDoubleSpinBox(this);
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secsSpinBox->setDecimals(0);
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minsSpinBox->setRange(0.0, 59.0);
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secsSpinBox->setSuffix(" secs");
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secsSpinBox->setSingleStep(1.0);
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secsSpinBox->setWrapping(true);
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secsSpinBox->setAlignment(Qt::AlignRight);
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intervalLengthLayout->addWidget(secsSpinBox);
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mainLayout->addLayout(intervalLengthLayout);
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QHBoxLayout *intervalCountLayout = new QHBoxLayout;
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QLabel *intervalCountLabel = new QLabel(tr("How many to find: "), this);
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intervalCountLayout->addWidget(intervalCountLabel);
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countSpinBox = new QDoubleSpinBox(this);
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countSpinBox->setDecimals(0);
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countSpinBox->setMinimum(1.0);
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countSpinBox->setSingleStep(1.0);
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countSpinBox->setAlignment(Qt::AlignRight);
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intervalCountLayout->addWidget(countSpinBox);
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mainLayout->addLayout(intervalCountLayout);
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QLabel *resultsLabel = new QLabel(tr("Results:"), this);
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mainLayout->addWidget(resultsLabel);
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resultsText = new QTextEdit(this);
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resultsText->setReadOnly(true);
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mainLayout->addWidget(resultsText);
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QHBoxLayout *buttonLayout = new QHBoxLayout;
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findButton = new QPushButton(tr("&Find Intervals"), this);
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buttonLayout->addWidget(findButton);
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doneButton = new QPushButton(tr("&Done"), this);
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buttonLayout->addWidget(doneButton);
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mainLayout->addLayout(buttonLayout);
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connect(findButton, SIGNAL(clicked()), this, SLOT(findClicked()));
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connect(doneButton, SIGNAL(clicked()), this, SLOT(doneClicked()));
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}
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void
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BestIntervalDialog::findClicked()
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{
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const RideFile *ride = mainWindow->currentRide();
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if (!ride) {
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QMessageBox::critical(this, tr("Select Ride"), tr("No ride selected!"));
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return;
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}
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int maxIntervals = (int) countSpinBox->value();
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double windowSizeSecs = (hrsSpinBox->value() * 3600.0
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+ minsSpinBox->value() * 60.0
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+ secsSpinBox->value());
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if (windowSizeSecs == 0.0) {
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QMessageBox::critical(this, tr("Bad Interval Length"),
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tr("Interval length must be greater than zero!"));
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return;
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}
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QList<const RideFilePoint*> window;
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QMap<double,double> bests;
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double secsDelta = ride->recIntSecs();
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int expectedSamples = (int) floor(windowSizeSecs / secsDelta);
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double totalWatts = 0.0;
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QListIterator<RideFilePoint*> i(ride->dataPoints());
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while (i.hasNext()) {
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const RideFilePoint *point = i.next();
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while (!window.empty()
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&& (point->secs >= window.first()->secs + windowSizeSecs)) {
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totalWatts -= window.first()->watts;
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window.takeFirst();
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}
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totalWatts += point->watts;
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window.append(point);
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int divisor = std::max(window.size(), expectedSamples);
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double avg = totalWatts / divisor;
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bests.insertMulti(avg, point->secs);
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}
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QMap<double,double> results;
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while (!bests.empty() && maxIntervals--) {
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QMutableMapIterator<double,double> j(bests);
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j.toBack();
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j.previous();
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double secs = j.value();
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results.insert(j.value() - windowSizeSecs, j.key());
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j.remove();
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while (j.hasPrevious()) {
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j.previous();
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if (abs(secs - j.value()) < windowSizeSecs)
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j.remove();
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}
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}
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QString resultsHtml =
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"<center>"
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"<table width=\"80%\">"
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"<tr><td align=\"center\">Start Time</td>"
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" <td align=\"center\">Average Power</td></tr>";
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QMapIterator<double,double> j(results);
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while (j.hasNext()) {
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j.next();
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double secs = j.key();
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double mins = ((int) secs) / 60;
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secs = secs - mins * 60.0;
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double hrs = ((int) mins) / 60;
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mins = mins - hrs * 60.0;
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QString row =
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"<tr><td align=\"center\">%1:%2:%3</td>"
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" <td align=\"center\">%4</td></tr>";
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row = row.arg(hrs, 0, 'f', 0);
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row = row.arg(mins, 2, 'f', 0, QLatin1Char('0'));
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row = row.arg(secs, 2, 'f', 0, QLatin1Char('0'));
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row = row.arg(j.value(), 0, 'f', 0, QLatin1Char('0'));
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resultsHtml += row;
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}
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resultsHtml += "</table></center>";
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resultsText->setHtml(resultsHtml);
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}
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void
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BestIntervalDialog::doneClicked()
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{
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done(0);
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}
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