mirror of
https://github.com/tumic0/GPXSee.git
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109 lines
1.8 KiB
C++
109 lines
1.8 KiB
C++
#include "config.h"
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#include "gpx.h"
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#include "speedgraph.h"
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SpeedGraph::SpeedGraph(QWidget *parent) : GraphView(parent)
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{
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_units = Metric;
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setYUnits();
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setXLabel(tr("Distance"));
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setYLabel(tr("Speed"));
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setSliderPrecision(1);
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}
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void SpeedGraph::addInfo()
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{
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GraphView::addInfo(tr("Average"), QString::number(avg() * yScale(), 'f', 1)
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+ UNIT_SPACE + yUnits());
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GraphView::addInfo(tr("Maximum"), QString::number(max() * yScale(), 'f', 1)
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+ UNIT_SPACE + yUnits());
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redraw();
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}
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void SpeedGraph::loadGPX(const GPX &gpx)
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{
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for (int i = 0; i < gpx.trackCount(); i++) {
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QVector<QPointF> data;
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gpx.track(i).speedGraph(data);
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if (data.count() < 2) {
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skipColor();
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continue;
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}
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_avg.append(QPointF(gpx.track(i).distance(), gpx.track(i).distance()
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/ gpx.track(i).time()));
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loadData(data);
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}
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setXUnits();
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addInfo();
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}
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qreal SpeedGraph::avg() const
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{
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qreal sum = 0, w = 0;
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QList<QPointF>::const_iterator it;
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for (it = _avg.begin(); it != _avg.end(); it++) {
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sum += it->y() * it->x();
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w += it->x();
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}
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return (sum / w);
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}
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void SpeedGraph::clear()
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{
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_avg.clear();
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GraphView::clear();
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}
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void SpeedGraph::setXUnits()
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{
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if (_units == Metric) {
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if (bounds().width() < KMINM) {
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GraphView::setXUnits(tr("m"));
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setXScale(1);
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} else {
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GraphView::setXUnits(tr("km"));
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setXScale(M2KM);
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}
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} else {
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if (bounds().width() < MIINM) {
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GraphView::setXUnits(tr("ft"));
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setXScale(M2FT);
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} else {
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GraphView::setXUnits(tr("mi"));
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setXScale(M2MI);
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}
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}
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}
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void SpeedGraph::setYUnits()
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{
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if (_units == Metric) {
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GraphView::setYUnits(tr("km/h"));
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setYScale(MS2KMH);
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} else {
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GraphView::setYUnits(tr("mi/h"));
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setYScale(MS2MIH);
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}
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}
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void SpeedGraph::setUnits(enum Units units)
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{
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_units = units;
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setXUnits();
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setYUnits();
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clearInfo();
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addInfo();
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}
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