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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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98
src/GUI/pathitem.cpp
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@ -8,19 +8,22 @@
#define GEOGRAPHICAL_MILE 1855.3248
static unsigned segments(qreal distance)
static inline bool isInvalid(const QPointF &p)
{
return (std::isnan(p.x()) || std::isnan(p.y()));
}
static inline unsigned segments(qreal distance)
{
return ceil(distance / GEOGRAPHICAL_MILE);
}
PathItem::PathItem(const Path &path, Map *map, QGraphicsItem *parent)
: QGraphicsObject(parent), _path(path)
: QGraphicsObject(parent), _path(path), _map(map)
{
Q_ASSERT(path.count() >= 2);
Q_ASSERT(_path.isValid());
_map = map;
_digitalZoom = 0;
_width = 3;
QBrush brush(Qt::SolidPattern);
_pen = QPen(brush, _width);
@ -29,8 +32,8 @@ PathItem::PathItem(const Path &path, Map *map, QGraphicsItem *parent)
updateShape();
_marker = new MarkerItem(this);
_marker->setPos(position(_path.at(0).distance()));
_markerDistance = _path.at(0).distance();
_marker->setPos(position(_path.first().first().distance()));
_markerDistance = _path.first().first().distance();
setCursor(Qt::ArrowCursor);
setAcceptHoverEvents(true);
@ -73,23 +76,27 @@ void PathItem::updatePainterPath()
{
_painterPath = QPainterPath();
_painterPath.moveTo(_map->ll2xy(_path.first().coordinates()));
for (int i = 1; i < _path.size(); i++) {
const PathPoint &p1 = _path.at(i-1);
const PathPoint &p2 = _path.at(i);
unsigned n = segments(p2.distance() - p1.distance());
for (int i = 0; i < _path.size(); i++) {
const PathSegment &segment = _path.at(i);
_painterPath.moveTo(_map->ll2xy(segment.first().coordinates()));
if (n > 1) {
GreatCircle gc(p1.coordinates(), p2.coordinates());
Coordinates last = p1.coordinates();
for (int j = 1; j < segment.size(); j++) {
const PathPoint &p1 = segment.at(j-1);
const PathPoint &p2 = segment.at(j);
unsigned n = segments(p2.distance() - p1.distance());
for (unsigned j = 1; j <= n; j++) {
Coordinates c(gc.pointAt(j/(double)n));
addSegment(last, c);
last = c;
}
} else
addSegment(p1.coordinates(), p2.coordinates());
if (n > 1) {
GreatCircle gc(p1.coordinates(), p2.coordinates());
Coordinates last = p1.coordinates();
for (unsigned k = 1; k <= n; k++) {
Coordinates c(gc.pointAt(k/(double)n));
addSegment(last, c);
last = c;
}
} else
addSegment(p1.coordinates(), p2.coordinates());
}
}
}
@ -166,35 +173,48 @@ void PathItem::setDigitalZoom(int zoom)
updateShape();
}
const PathSegment *PathItem::segment(qreal x) const
{
for (int i = 0; i < _path.size(); i++)
if (x <= _path.at(i).last().distance())
return &(_path.at(i));
return 0;
}
QPointF PathItem::position(qreal x) const
{
const PathSegment *seg = segment(x);
if (!seg)
return QPointF(NAN, NAN);
int low = 0;
int high = _path.count() - 1;
int high = seg->count() - 1;
int mid = 0;
Q_ASSERT(high > low);
Q_ASSERT(x >= _path.at(low).distance() && x <= _path.at(high).distance());
if (!(x >= seg->first().distance() && x <= seg->last().distance()))
return QPointF(NAN, NAN);
while (low <= high) {
mid = low + ((high - low) / 2);
qreal val = _path.at(mid).distance();
qreal val = seg->at(mid).distance();
if (val > x)
high = mid - 1;
else if (val < x)
low = mid + 1;
else
return _map->ll2xy(_path.at(mid).coordinates());
return _map->ll2xy(seg->at(mid).coordinates());
}
Coordinates c1, c2;
qreal p1, p2;
if (_path.at(mid).distance() < x) {
c1 = _path.at(mid).coordinates(); c2 = _path.at(mid+1).coordinates();
p1 = _path.at(mid).distance(); p2 = _path.at(mid+1).distance();
if (seg->at(mid).distance() < x) {
c1 = seg->at(mid).coordinates(); c2 = seg->at(mid+1).coordinates();
p1 = seg->at(mid).distance(); p2 = seg->at(mid+1).distance();
} else {
c1 = _path.at(mid-1).coordinates(); c2 = _path.at(mid).coordinates();
p1 = _path.at(mid-1).distance(); p2 = _path.at(mid).distance();
c1 = seg->at(mid-1).coordinates(); c2 = seg->at(mid).coordinates();
p1 = seg->at(mid-1).distance(); p2 = seg->at(mid).distance();
}
unsigned n = segments(p2 - p1);
@ -224,13 +244,15 @@ QPointF PathItem::position(qreal x) const
void PathItem::moveMarker(qreal distance)
{
if (distance >= _path.first().distance()
&& distance <= _path.last().distance()) {
_marker->setVisible(true);
_marker->setPos(position(distance));
_markerDistance = distance;
} else
QPointF pos(position(distance));
if (isInvalid(pos))
_marker->setVisible(false);
else {
_marker->setVisible(true);
_marker->setPos(pos);
_markerDistance = distance;
}
}
void PathItem::setMarkerColor(const QColor &color)