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Code Issues Projects Releases Activity

Added support for track segments

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This commit is contained in:
Martin Tůma
2019-02-11 23:28:08 +01:00
parent 3c112b0b6f
commit 0308dbbb09
46 changed files with 731 additions and 537 deletions
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159
src/GUI/graphitem.cpp
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@ -3,26 +3,17 @@
GraphItem::GraphItem(const Graph &graph, GraphType type, QGraphicsItem *parent)
: QGraphicsObject(parent)
: QGraphicsObject(parent), _graph(graph), _type(type)
{
Q_ASSERT(_graph.isValid());
_id = 0;
_width = 1;
_pen = QPen(Qt::black, _width);
_type = type;
_graph = graph;
_sx = 1.0; _sy = 1.0;
_time = _graph.hasTime();
_time = true;
for (int i = 0; i < _graph.size(); i++) {
if (std::isnan(_graph.at(i).t())) {
_time = false;
break;
}
}
setZValue(1.0);
setZValue(2.0);
updatePath();
updateShape();
@ -89,18 +80,31 @@ void GraphItem::setWidth(int width)
updateShape();
}
const GraphSegment *GraphItem::segment(qreal x, GraphType type) const
{
for (int i = 0; i < _graph.size(); i++)
if (x <= _graph.at(i).last().x(type))
return &(_graph.at(i));
return 0;
}
qreal GraphItem::yAtX(qreal x)
{
const GraphSegment *seg = segment(x, _type);
if (!seg)
return NAN;
int low = 0;
int high = _graph.count() - 1;
int high = seg->count() - 1;
int mid = 0;
Q_ASSERT(high > low);
Q_ASSERT(x >= _graph.at(low).x(_type) && x <= _graph.at(high).x(_type));
if (!(x >= seg->at(low).x(_type) && x <= seg->at(high).x(_type)))
return NAN;
while (low <= high) {
mid = low + ((high - low) / 2);
const GraphPoint &p = _graph.at(mid);
const GraphPoint &p = seg->at(mid);
if (p.x(_type) > x)
high = mid - 1;
else if (p.x(_type) < x)
@ -110,58 +114,56 @@ qreal GraphItem::yAtX(qreal x)
}
QLineF l;
if (_graph.at(mid).x(_type) < x)
l = QLineF(_graph.at(mid).x(_type), _graph.at(mid).y(),
_graph.at(mid+1).x(_type), _graph.at(mid+1).y());
if (seg->at(mid).x(_type) < x)
l = QLineF(seg->at(mid).x(_type), seg->at(mid).y(),
seg->at(mid+1).x(_type), seg->at(mid+1).y());
else
l = QLineF(_graph.at(mid-1).x(_type), _graph.at(mid-1).y(),
_graph.at(mid).x(_type), _graph.at(mid).y());
l = QLineF(seg->at(mid-1).x(_type), seg->at(mid-1).y(),
seg->at(mid).x(_type), seg->at(mid).y());
return -l.pointAt((x - l.p1().x()) / (l.p2().x() - l.p1().x())).y();
}
qreal GraphItem::distanceAtTime(qreal time)
{
const GraphSegment *seg = segment(time, Time);
if (!seg)
return NAN;
int low = 0;
int high = _graph.count() - 1;
int high = seg->count() - 1;
int mid = 0;
Q_ASSERT(high > low);
Q_ASSERT(time >= _graph.at(low).t() && time <= _graph.at(high).t());
if (!(time >= seg->at(low).t() && time <= seg->at(high).t()))
return NAN;
while (low <= high) {
mid = low + ((high - low) / 2);
const GraphPoint &p = _graph.at(mid);
const GraphPoint &p = seg->at(mid);
if (p.t() > time)
high = mid - 1;
else if (p.t() < time)
low = mid + 1;
else
return _graph.at(mid).s();
return seg->at(mid).s();
}
QLineF l;
if (_graph.at(mid).t() < time)
l = QLineF(_graph.at(mid).t(), _graph.at(mid).s(), _graph.at(mid+1).t(),
_graph.at(mid+1).s());
if (seg->at(mid).t() < time)
l = QLineF(seg->at(mid).t(), seg->at(mid).s(), seg->at(mid+1).t(),
seg->at(mid+1).s());
else
l = QLineF(_graph.at(mid-1).t(), _graph.at(mid-1).s(),
_graph.at(mid).t(), _graph.at(mid).s());
l = QLineF(seg->at(mid-1).t(), seg->at(mid-1).s(),
seg->at(mid).t(), seg->at(mid).s());
return l.pointAt((time - l.p1().x()) / (l.p2().x() - l.p1().x())).y();
}
void GraphItem::emitSliderPositionChanged(qreal pos)
{
if (_type == Time) {
if (_time) {
if (pos >= _graph.first().t() && pos <= _graph.last().t())
emit sliderPositionChanged(distanceAtTime(pos));
else
emit sliderPositionChanged(NAN);
} else
emit sliderPositionChanged(NAN);
} else
if (_type == Time)
emit sliderPositionChanged(_time ? distanceAtTime(pos) : NAN);
else
emit sliderPositionChanged(pos);
}
@ -197,9 +199,13 @@ void GraphItem::updatePath()
if (_type == Time && !_time)
return;
_path.moveTo(_graph.first().x(_type) * _sx, -_graph.first().y() * _sy);
for (int i = 1; i < _graph.size(); i++)
_path.lineTo(_graph.at(i).x(_type) * _sx, -_graph.at(i).y() * _sy);
for (int i = 0; i < _graph.size(); i++) {
const GraphSegment &segment = _graph.at(i);
_path.moveTo(segment.first().x(_type) * _sx, -segment.first().y() * _sy);
for (int i = 1; i < segment.size(); i++)
_path.lineTo(segment.at(i).x(_type) * _sx, -segment.at(i).y() * _sy);
}
}
void GraphItem::updateBounds()
@ -211,18 +217,71 @@ void GraphItem::updateBounds()
qreal bottom, top, left, right;
QPointF p = QPointF(_graph.first().x(_type), -_graph.first().y());
QPointF p = QPointF(_graph.first().first().x(_type),
-_graph.first().first().y());
bottom = p.y(); top = p.y(); left = p.x(); right = p.x();
for (int i = 1; i < _graph.size(); i++) {
p = QPointF(_graph.at(i).x(_type), -_graph.at(i).y());
bottom = qMax(bottom, p.y()); top = qMin(top, p.y());
right = qMax(right, p.x()); left = qMin(left, p.x());
for (int i = 0; i < _graph.size(); i++) {
const GraphSegment &segment = _graph.at(i);
for (int j = 0; j < segment.size(); j++) {
p = QPointF(segment.at(j).x(_type), -segment.at(j).y());
bottom = qMax(bottom, p.y()); top = qMin(top, p.y());
right = qMax(right, p.x()); left = qMin(left, p.x());
}
}
_bounds = QRectF(QPointF(left, top), QPointF(right, bottom));
}
qreal GraphItem::max() const
{
qreal ret = _graph.first().first().y();
for (int i = 0; i < _graph.size(); i++) {
const GraphSegment &segment = _graph.at(i);
for (int j = 0; j < segment.size(); j++) {
qreal y = segment.at(j).y();
if (y > ret)
ret = y;
}
}
return ret;
}
qreal GraphItem::min() const
{
qreal ret = _graph.first().first().y();
for (int i = 0; i < _graph.size(); i++) {
const GraphSegment &segment = _graph.at(i);
for (int j = 0; j < segment.size(); j++) {
qreal y = segment.at(j).y();
if (y < ret)
ret = y;
}
}
return ret;
}
qreal GraphItem::avg() const
{
qreal sum = 0;
for (int i = 0; i < _graph.size(); i++) {
const GraphSegment &segment = _graph.at(i);
for (int j = 1; j < segment.size(); j++)
sum += segment.at(j).y() * (segment.at(j).s() - segment.at(j-1).s());
}
return sum/_graph.last().last().s();
}
void GraphItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event);