本文整理汇总了C++中GeoDataCoordinates::altitude方法的典型用法代码示例。如果您正苦于以下问题：C++ GeoDataCoordinates::altitude方法的具体用法？C++ GeoDataCoordinates::altitude怎么用？C++ GeoDataCoordinates::altitude使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GeoDataCoordinates的用法示例。
在下文中一共展示了GeoDataCoordinates::altitude方法的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: simpleParseTest
void TestGeoDataTrack::simpleParseTest()
{
GeoDataDocument* dataDocument = parseKml( simpleExampleContent );
GeoDataFolder *folder = dataDocument->folderList().at( 0 );
QCOMPARE( folder->placemarkList().size(), 1 );
GeoDataPlacemark* placemark = folder->placemarkList().at( 0 );
QCOMPARE( placemark->geometry()->geometryId(), GeoDataTrackId );
GeoDataTrack* track = static_cast<GeoDataTrack*>( placemark->geometry() );
QCOMPARE( track->size(), 7 );
{
QDateTime when = track->whenList().at( 0 );
QCOMPARE( when, QDateTime( QDate( 2010, 5, 28 ), QTime( 2, 2, 9 ), Qt::UTC ) );
}
{
GeoDataCoordinates coord = track->coordinatesList().at( 0 );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), -122.207881 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 37.371915 );
QCOMPARE( coord.altitude(), 156.000000 );
}
{
GeoDataCoordinates coord = track->coordinatesAt( QDateTime( QDate( 2010, 5, 28 ), QTime( 2, 2, 9 ), Qt::UTC ) );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), -122.207881 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 37.371915 );
QCOMPARE( coord.altitude(), 156.000000 );
}
delete dataDocument;
}示例2: receiveGpsCoordinates
void CurrentLocationWidgetPrivate::receiveGpsCoordinates( const GeoDataCoordinates &position, qreal speed )
{
m_currentPosition = position;
QString unitString;
QString altitudeUnitString;
QString distanceUnitString;
qreal unitSpeed = 0.0;
qreal altitude = 0.0;
qreal length = m_widget->model()->positionTracking()->length( m_widget->model()->planetRadius() );
QString html = "<html><body>";
html += "<table cellspacing=\"2\" cellpadding=\"2\">";
html += "<tr><td>Longitude</td><td><a href=\"http://edu.kde.org/marble\">%1</a></td></tr>";
html += "<tr><td>Latitude</td><td><a href=\"http://edu.kde.org/marble\">%2</a></td></tr>";
html += "<tr><td>Altitude</td><td>%3</td></tr>";
html += "<tr><td>Speed</td><td>%4</td></tr>";
html += "<tr><td>Distance</td><td>%5</td></tr>";
html += "</table>";
html += "</body></html>";
switch ( MarbleGlobal::getInstance()->locale()->measurementSystem() ) {
case QLocale::MetricSystem:
//kilometers per hour
unitString = QObject::tr("km/h");
unitSpeed = speed * HOUR2SEC * METER2KM;
altitudeUnitString = QObject::tr("m");
distanceUnitString = QObject::tr("m");
if ( length > 1000.0 ) {
length /= 1000.0;
distanceUnitString = QObject::tr("km");
}
altitude = position.altitude();
break;
case QLocale::ImperialSystem:
//miles per hour
unitString = QObject::tr("m/h");
unitSpeed = speed * HOUR2SEC * METER2KM * KM2MI;
altitudeUnitString = QObject::tr("ft");
distanceUnitString = QObject::tr("ft");
altitude = position.altitude() * M2FT;
length *= M2FT;
break;
}
// TODO read this value from the incoming signal
const QString speedString = QLocale::system().toString( unitSpeed, 'f', 1);
const QString altitudeString = QString( "%1 %2" ).arg( altitude, 0, 'f', 1, QChar(' ') ).arg( altitudeUnitString );
const QString distanceString = QString( "%1 %2" ).arg( length, 0, 'f', 1, QChar(' ') ).arg( distanceUnitString );
html = html.arg( position.lonToString() ).arg( position.latToString() );
html = html.arg( altitudeString ).arg( speedString + ' ' + unitString );
html = html.arg( distanceString );
m_currentLocationUi.locationLabel->setText( html );
m_currentLocationUi.showTrackCheckBox->setEnabled( true );
m_currentLocationUi.saveTrackButton->setEnabled( true );
m_currentLocationUi.clearTrackButton->setEnabled( true );
}示例3: withoutTimeTest
void TestGeoDataTrack::withoutTimeTest()
{
//"Simple Example" from kmlreference; when elements emptied
QString content(
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
"<kml xmlns=\"http://www.opengis.net/kml/2.2\""
" xmlns:gx=\"http://www.google.com/kml/ext/2.2\">"
"<Folder>"
" <Placemark>"
" <gx:Track>"
" <when></when>"
" <when></when>"
" <when></when>"
" <when></when>"
" <when></when>"
" <when></when>"
" <when></when>"
" <gx:coord>-122.207881 37.371915 156.000000</gx:coord>"
" <gx:coord>-122.205712 37.373288 152.000000</gx:coord>"
" <gx:coord>-122.204678 37.373939 147.000000</gx:coord>"
" <gx:coord>-122.203572 37.374630 142.199997</gx:coord>"
" <gx:coord>-122.203451 37.374706 141.800003</gx:coord>"
" <gx:coord>-122.203329 37.374780 141.199997</gx:coord>"
" <gx:coord>-122.203207 37.374857 140.199997</gx:coord>"
" </gx:Track>"
" </Placemark>"
"</Folder>"
"</kml>" );
GeoDataDocument* dataDocument = parseKml( content );
GeoDataFolder *folder = dataDocument->folderList().at( 0 );
QCOMPARE( folder->placemarkList().size(), 1 );
GeoDataPlacemark* placemark = folder->placemarkList().at( 0 );
QCOMPARE( placemark->geometry()->geometryId(), GeoDataTrackId );
GeoDataTrack* track = static_cast<GeoDataTrack*>( placemark->geometry() );
QCOMPARE( track->size(), 7 );
{
GeoDataCoordinates coord = track->coordinatesList().at( 0 );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), -122.207881 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 37.371915 );
QCOMPARE( coord.altitude(), 156.000000 );
}
{
const GeoDataLineString *lineString = track->lineString();
QCOMPARE( lineString->size(), 7 );
GeoDataCoordinates coord = lineString->at( 0 );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), -122.207881 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 37.371915 );
QCOMPARE( coord.altitude(), 156.000000 );
}
delete dataDocument;
}示例4: contains
bool GeoDataLatLonAltBox::contains( const GeoDataCoordinates &point ) const
{
if ( !GeoDataLatLonBox::contains( point ) )
return false;
if ( point.altitude() < d->m_minAltitude || point.altitude() > d->m_maxAltitude ) {
return false;
}
return true;
}示例5: screenCoordinates
bool VerticalPerspectiveProjection::screenCoordinates( const GeoDataCoordinates &coordinates,
const ViewportParams *viewport,
qreal &x, qreal &y, bool &globeHidesPoint ) const
{
Q_D(const VerticalPerspectiveProjection);
d->calculateConstants(viewport->radius());
const qreal P = d->m_P;
const qreal deltaLambda = coordinates.longitude() - viewport->centerLongitude();
const qreal phi = coordinates.latitude();
const qreal phi1 = viewport->centerLatitude();
qreal cosC = qSin( phi1 ) * qSin( phi ) + qCos( phi1 ) * qCos( phi ) * qCos( deltaLambda );
// Don't display placemarks that are below 10km altitude and
// are on the Earth's backside (where cosC < 1/P)
if (cosC < 1/P && coordinates.altitude() < 10000) {
globeHidesPoint = true;
return false;
}
// Let (x, y) be the position on the screen of the placemark ..
// First determine the position in unit coordinates:
qreal k = (P - 1) / (P - cosC); // scale factor
x = ( qCos( phi ) * qSin( deltaLambda ) ) * k;
y = ( qCos( phi1 ) * qSin( phi ) - qSin( phi1 ) * qCos( phi ) * qCos( deltaLambda ) ) * k;
// Transform to screen coordinates
qreal pixelAltitude = (coordinates.altitude() + EARTH_RADIUS) * d->m_altitudeToPixel;
x *= pixelAltitude;
y *= pixelAltitude;
// Don't display satellites that are on the Earth's backside:
if (cosC < 1/P && x*x+y*y < viewport->radius() * viewport->radius()) {
globeHidesPoint = true;
return false;
}
// The remaining placemarks are definetely not on the Earth's backside
globeHidesPoint = false;
x += viewport->width() / 2;
y = viewport->height() / 2 - y;
// Skip placemarks that are outside the screen area
if ( x < 0 || x >= viewport->width() || y < 0 || y >= viewport->height() ) {
return false;
}
return true;
}示例6: screenCoordinates
bool SphericalProjection::screenCoordinates( const GeoDataCoordinates &coordinates,
const ViewportParams *viewport,
qreal &x, qreal &y, bool &globeHidesPoint ) const
{
qreal absoluteAltitude = coordinates.altitude() + EARTH_RADIUS;
Quaternion qpos = coordinates.quaternion();
qpos.rotateAroundAxis( viewport->planetAxisMatrix() );
qreal pixelAltitude = ( ( viewport->radius() )
/ EARTH_RADIUS * absoluteAltitude );
if ( coordinates.altitude() < 10000 ) {
// Skip placemarks at the other side of the earth.
if ( qpos.v[Q_Z] < 0 ) {
globeHidesPoint = true;
return false;
}
}
else {
qreal earthCenteredX = pixelAltitude * qpos.v[Q_X];
qreal earthCenteredY = pixelAltitude * qpos.v[Q_Y];
qreal radius = viewport->radius();
// Don't draw high placemarks (e.g. satellites) that aren't visible.
if ( qpos.v[Q_Z] < 0
&& ( ( earthCenteredX * earthCenteredX
+ earthCenteredY * earthCenteredY )
< radius * radius ) ) {
globeHidesPoint = true;
return false;
}
}
// Let (x, y) be the position on the screen of the placemark..
x = ((qreal)(viewport->width()) / 2 + pixelAltitude * qpos.v[Q_X]);
y = ((qreal)(viewport->height()) / 2 - pixelAltitude * qpos.v[Q_Y]);
// Skip placemarks that are outside the screen area
if ( x < 0 || x >= viewport->width() || y < 0 || y >= viewport->height() ) {
globeHidesPoint = false;
return false;
}
globeHidesPoint = false;
return true;
}示例7: updateLocation
void GpsInfo::updateLocation( GeoDataCoordinates coordinates, qreal)
{
PositionTracking *tracking = marbleModel()->positionTracking();
qreal speed = tracking->speed();
qreal direction = tracking->direction();
qreal altitude = coordinates.altitude();
qreal precision = tracking->accuracy().horizontal;
QString speedString;
QString distanceString;
switch ( m_locale->measurementSystem() ) {
case MarbleLocale::ImperialSystem:
//miles per hour
speedString = tr("mph");
speed *= HOUR2SEC * METER2KM * KM2MI;
distanceString = tr("ft");
altitude *= M2FT;
precision *= M2FT;
break;
case MarbleLocale::MetricSystem:
//kilometers per hour
speedString = tr("km/h");
speed *= HOUR2SEC * METER2KM;
distanceString = tr("m");
break;
case MarbleLocale::NauticalSystem:
// nm per hour (knots)
speedString = tr("kt");
speed *= HOUR2SEC * METER2KM * KM2NM;
distanceString = tr("nm");
break;
}
m_widget.SpeedValue->setText( QString( " %1 %2" )
.arg( QLocale().toString(speed, 'f', 1 ) )
.arg( speedString ) );
m_widget.AltitudeValue->setText( QString( " %1 %2" )
.arg( QLocale().toString(altitude, 'f', 1 ) )
.arg( distanceString ) );
m_widget.DirectionValue->setText( QString( " %1 %2" )
.arg( QLocale().toString(direction, 'f', 1 ) )
.arg( "d" ) );
m_widget.PrecisionValue->setText( QString( " %1 %2" )
.arg( QLocale().toString(precision, 'f', 1 ) )
.arg( distanceString ) );
int const minimumWidth = m_widgetItem->widget()->sizeHint().width();
if ( size().width() < minimumWidth ) {
m_widgetItem->setSize( QSizeF( minimumWidth, size().height() ) );
}
update();
emit repaintNeeded();
}示例8: findDateLine
GeoDataCoordinates GeoDataLineStringPrivate::findDateLine( const GeoDataCoordinates & previousCoords,
const GeoDataCoordinates & currentCoords,
int recursionCounter )
{
int currentSign = ( currentCoords.longitude() < 0.0 ) ? -1 : +1 ;
int previousSign = ( previousCoords.longitude() < 0.0 ) ? -1 : +1 ;
qreal longitudeDiff = fabs( previousSign * M_PI - previousCoords.longitude() )
+ fabs( currentSign * M_PI - currentCoords.longitude() );
if ( longitudeDiff < 0.001 || recursionCounter == 100 ) {
// mDebug() << "stopped at recursion" << recursionCounter << " and longitude difference " << longitudeDiff;
return currentCoords;
}
++recursionCounter;
qreal lon = 0.0;
qreal lat = 0.0;
qreal altDiff = currentCoords.altitude() - previousCoords.altitude();
const Quaternion itpos = Quaternion::nlerp( previousCoords.quaternion(), currentCoords.quaternion(), 0.5 );
itpos.getSpherical( lon, lat );
qreal altitude = previousCoords.altitude() + 0.5 * altDiff;
GeoDataCoordinates interpolatedCoords( lon, lat, altitude );
int interpolatedSign = ( interpolatedCoords.longitude() < 0.0 ) ? -1 : +1 ;
/*
mDebug() << "SRC" << previousCoords.toString();
mDebug() << "TAR" << currentCoords.toString();
mDebug() << "IPC" << interpolatedCoords.toString();
*/
if ( interpolatedSign != currentSign ) {
return findDateLine( interpolatedCoords, currentCoords, recursionCounter );
}
return findDateLine( previousCoords, interpolatedCoords, recursionCounter );
}示例9: mapCenterOn
void TourWidgetPrivate::mapCenterOn( const QModelIndex &index )
{
QVariant coordinatesVariant = m_widget->model()->treeModel()->data( index, MarblePlacemarkModel::CoordinateRole );
if ( !coordinatesVariant.isNull() ) {
GeoDataCoordinates const coordinates = coordinatesVariant.value<GeoDataCoordinates>();
GeoDataLookAt lookat;
lookat.setCoordinates( coordinates );
lookat.setRange( coordinates.altitude() );
m_widget->flyTo( lookat, Instant );
}
}示例10: GeoDataLatLonBox
GeoDataLatLonAltBox::GeoDataLatLonAltBox( const GeoDataCoordinates & coordinates )
: GeoDataLatLonBox(),
d( new GeoDataLatLonAltBoxPrivate )
{
setWest( coordinates.longitude() );
setEast( coordinates.longitude() );
setNorth( coordinates.latitude() );
setSouth( coordinates.latitude() );
d->m_minAltitude = coordinates.altitude();
d->m_maxAltitude = coordinates.altitude();
}示例11: write
bool KmlLineStringTagWriter::write( const GeoNode *node, GeoWriter& writer ) const
{
const GeoDataLineString *lineString = static_cast<const GeoDataLineString*>( node );
if ( lineString->size() > 1 )
{
writer.writeStartElement( kml::kmlTag_LineString );
writer.writeStartElement( "coordinates" );
// Write altitude for *all* elements, if *any* element
// has altitude information (!= 0.0)
bool hasAltitude = false;
for ( int i = 0; i < lineString->size(); ++i ) {
if ( lineString->at( i ).altitude() ) {
hasAltitude = true;
break;
}
}
for ( int i = 0; i < lineString->size(); ++i ) {
GeoDataCoordinates coordinates = lineString->at( i );
if ( i > 0 )
{
writer.writeCharacters( " " );
}
qreal lon = coordinates.longitude( GeoDataCoordinates::Degree );
writer.writeCharacters( QString::number( lon, 'f', 10 ) );
writer.writeCharacters( "," );
qreal lat = coordinates.latitude( GeoDataCoordinates::Degree );
writer.writeCharacters( QString::number( lat, 'f', 10 ) );
if ( hasAltitude ) {
qreal alt = coordinates.altitude();
writer.writeCharacters( "," );
writer.writeCharacters( QString::number( alt, 'f', 2 ) );
}
}
writer.writeEndElement();
writer.writeEndElement();
return true;
}
return false;
}示例12: simpleParseTest
void TestTrack::simpleParseTest()
{
//example track recorded using a Garmin Vista HCx and downloaded using gpsbabel
QString content(
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
"<gpx"
" version=\"1.0\""
" creator=\"GPSBabel - http://www.gpsbabel.org\""
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\""
" xmlns=\"http://www.topografix.com/GPX/1/0\""
" xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">"
"<time>2011-07-03T14:19:57Z</time>"
"<bounds minlat=\"47.231073193\" minlon=\"12.549449634\" maxlat=\"48.502999926\" maxlon=\"14.302069964\"/>"
"<trk>"
" <name>test track</name>"
"<number>1</number>"
"<trkseg>"
"<trkpt lat=\"47.231477033\" lon=\"12.560534449\">"
" <ele>1130.647705</ele>"
" <time>2011-06-24T10:33:40Z</time>"
"</trkpt>"
"<trkpt lat=\"47.231486840\" lon=\"12.560604354\">"
" <ele>1127.763672</ele>"
" <time>2011-06-24T10:33:55Z</time>"
"</trkpt>"
"<trkpt lat=\"47.231497569\" lon=\"12.560612401\">"
" <ele>1121.995850</ele>"
" <time>2011-06-24T10:34:00Z</time>"
"</trkpt>"
"</trkseg>"
"</trk>"
"</gpx>"
);
GpxParser parser;
QByteArray array( content.toUtf8() );
QBuffer buffer( &array );
buffer.open( QIODevice::ReadOnly );
qDebug() << "Buffer content:" << endl << buffer.buffer();
if ( !parser.read( &buffer ) ) {
QFAIL( "Could not parse data!" );
return;
}
GeoDocument* document = parser.releaseDocument();
QVERIFY( document );
GeoDataDocument *dataDocument = static_cast<GeoDataDocument*>( document );
GeoDataPlacemark* placemark = dataDocument->placemarkList().at( 0 );
QCOMPARE( placemark->geometry()->geometryId(), GeoDataMultiGeometryId );
GeoDataMultiGeometry* multiGeo = static_cast<GeoDataMultiGeometry*>( placemark->geometry() );
GeoDataTrack* track = static_cast<GeoDataTrack*>( &multiGeo->at( 0 ) );
QCOMPARE( track->size(), 3 );
{
QDateTime when = track->whenList().at( 0 );
QCOMPARE( when, QDateTime( QDate( 2011, 6, 24 ), QTime( 10, 33, 40 ), Qt::UTC ) );
}
{
GeoDataCoordinates coord = track->coordinatesAt( 0 );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), 12.560534449 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 47.231477033 );
QCOMPARE( coord.altitude(), 1130.647705 );
}
{
GeoDataCoordinates coord = track->coordinatesAt( QDateTime( QDate( 2011, 6, 24 ), QTime( 10, 33, 40 ), Qt::UTC ) );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), 12.560534449 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 47.231477033 );
QCOMPARE( coord.altitude(), 1130.647705 );
}
{
const GeoDataLineString* lineString = track->lineString();
QCOMPARE( lineString->size(), 3 );
GeoDataCoordinates coord = lineString->at( 0 );
QCOMPARE( coord.longitude( GeoDataCoordinates::Degree ), 12.560534449 );
QCOMPARE( coord.latitude( GeoDataCoordinates::Degree ), 47.231477033 );
QCOMPARE( coord.altitude(), 1130.647705 );
}
delete document;
}示例13: processTessellation
int CylindricalProjectionPrivate::processTessellation( const GeoDataCoordinates &previousCoords,
const GeoDataCoordinates ¤tCoords,
int tessellatedNodes,
QVector<QPolygonF*> &polygons,
const ViewportParams *viewport,
TessellationFlags f,
int mirrorCount,
qreal repeatDistance) const
{
const bool clampToGround = f.testFlag( FollowGround );
const bool followLatitudeCircle = f.testFlag( RespectLatitudeCircle )
&& previousCoords.latitude() == currentCoords.latitude();
// Calculate steps for tessellation: lonDiff and altDiff
qreal lonDiff = 0.0;
if ( followLatitudeCircle ) {
const int previousSign = previousCoords.longitude() > 0 ? 1 : -1;
const int currentSign = currentCoords.longitude() > 0 ? 1 : -1;
lonDiff = currentCoords.longitude() - previousCoords.longitude();
if ( previousSign != currentSign
&& fabs(previousCoords.longitude()) + fabs(currentCoords.longitude()) > M_PI ) {
if ( previousSign > currentSign ) {
// going eastwards ->
lonDiff += 2 * M_PI ;
} else {
// going westwards ->
lonDiff -= 2 * M_PI;
}
}
if ( fabs( lonDiff ) == 2 * M_PI ) {
return mirrorCount;
}
}
const qreal altDiff = currentCoords.altitude() - previousCoords.altitude();
// Create the tessellation nodes.
GeoDataCoordinates previousTessellatedCoords = previousCoords;
for ( int i = 1; i <= tessellatedNodes; ++i ) {
const qreal t = (qreal)(i) / (qreal)( tessellatedNodes + 1 );
// interpolate the altitude, too
const qreal altitude = clampToGround ? 0 : altDiff * t + previousCoords.altitude();
qreal lon = 0.0;
qreal lat = 0.0;
if ( followLatitudeCircle ) {
// To tessellate along latitude circles use the
// linear interpolation of the longitude.
lon = lonDiff * t + previousCoords.longitude();
lat = previousTessellatedCoords.latitude();
}
else {
// To tessellate along great circles use the
// normalized linear interpolation ("NLERP") for latitude and longitude.
const Quaternion itpos = Quaternion::nlerp( previousCoords.quaternion(), currentCoords.quaternion(), t );
itpos. getSpherical( lon, lat );
}
const GeoDataCoordinates currentTessellatedCoords( lon, lat, altitude );
Q_Q(const CylindricalProjection);
qreal bx, by;
q->screenCoordinates( currentTessellatedCoords, viewport, bx, by );
mirrorCount = crossDateLine( previousTessellatedCoords, currentTessellatedCoords, bx, by, polygons,
mirrorCount, repeatDistance );
previousTessellatedCoords = currentTessellatedCoords;
}
// For the clampToGround case add the "current" coordinate after adding all other nodes.
GeoDataCoordinates currentModifiedCoords( currentCoords );
if ( clampToGround ) {
currentModifiedCoords.setAltitude( 0.0 );
}
Q_Q(const CylindricalProjection);
qreal bx, by;
q->screenCoordinates( currentModifiedCoords, viewport, bx, by );
mirrorCount = crossDateLine( previousTessellatedCoords, currentModifiedCoords, bx, by, polygons,
mirrorCount, repeatDistance );
return mirrorCount;
}示例14: paintContent
//.........这里部分代码省略.........
.arg( m_axisY.unit() );
painter->drawText( contentRect().toRect(), Qt::AlignBottom | Qt::AlignCenter, intervalStr );
// draw elevation profile
painter->setPen( QColor( Qt::black ) );
bool const highRes = MarbleGlobal::getInstance()->profiles() & MarbleGlobal::HighResolution;
QPen pen = painter->pen();
pen.setWidth( highRes ? 2 : 1 );
painter->setPen( pen );
QLinearGradient fillGradient( 0, 0, 0, m_eleGraphHeight );
QColor startColor = Oxygen::forestGreen4;
QColor endColor = Oxygen::hotOrange4;
startColor.setAlpha( 200 );
endColor.setAlpha( 32 );
fillGradient.setColorAt( 0.0, startColor );
fillGradient.setColorAt( 1.0, endColor );
QBrush brush = QBrush( fillGradient );
painter->setBrush( brush );
QPoint oldPos;
oldPos.setX( m_leftGraphMargin );
oldPos.setY( ( m_axisY.minValue() - m_axisY.minValue() )
* m_eleGraphHeight / ( m_axisY.range() / m_shrinkFactorY ) );
oldPos.setY( m_eleGraphHeight - oldPos.y() );
QPainterPath path;
path.moveTo( oldPos.x(), m_eleGraphHeight );
path.lineTo( oldPos.x(), oldPos.y() );
const int start = m_zoomToViewport ? m_firstVisiblePoint : 0;
const int end = m_zoomToViewport ? m_lastVisiblePoint : m_eleData.size() - 1;
for ( int i = start; i <= end; ++i ) {
QPoint newPos;
if ( i == start ) {
// make sure the plot always starts at the y-axis
newPos.setX( 0 );
} else {
newPos.setX( ( m_eleData.value(i).x() - m_axisX.minValue() ) * m_eleGraphWidth / m_axisX.range() );
}
newPos.rx() += m_leftGraphMargin;
if ( newPos.x() != oldPos.x() || newPos.y() != oldPos.y() ) {
newPos.setY( ( m_eleData.value(i).y() - m_axisY.minValue() )
* m_eleGraphHeight / ( m_axisY.range() * m_shrinkFactorY ) );
newPos.setY( m_eleGraphHeight - newPos.y() );
path.lineTo( newPos.x(), newPos.y() );
oldPos = newPos;
}
}
path.lineTo( oldPos.x(), m_eleGraphHeight );
// fill
painter->setPen( QPen( Qt::NoPen ) );
painter->drawPath( path );
// contour
// "remove" the first and last path element first, they are only used to fill down to the bottom
painter->setBrush( QBrush( Qt::NoBrush ) );
path.setElementPositionAt( 0, path.elementAt( 1 ).x, path.elementAt( 1 ).y );
path.setElementPositionAt( path.elementCount()-1,
path.elementAt( path.elementCount()-2 ).x,
path.elementAt( path.elementCount()-2 ).y );
painter->setPen( pen );
painter->drawPath( path );
pen.setWidth( 1 );
painter->setPen( pen );
// draw interactive cursor
const GeoDataCoordinates currentPoint = m_markerPlacemark->coordinate();
if ( currentPoint.isValid() ) {
painter->setPen( QColor( Qt::white ) );
painter->drawLine( m_leftGraphMargin + m_cursorPositionX, 0,
m_leftGraphMargin + m_cursorPositionX, m_eleGraphHeight );
qreal xpos = m_axisX.minValue() + ( m_cursorPositionX / m_eleGraphWidth ) * m_axisX.range();
qreal ypos = m_eleGraphHeight - ( ( currentPoint.altitude() - m_axisY.minValue() ) / ( qMax<qreal>( 1.0, m_axisY.range() ) * m_shrinkFactorY ) ) * m_eleGraphHeight;
painter->drawLine( m_leftGraphMargin + m_cursorPositionX - 5, ypos,
m_leftGraphMargin + m_cursorPositionX + 5, ypos );
intervalStr.setNum( xpos * m_axisX.scale(), 'f', 2 );
intervalStr += ' ' + m_axisX.unit();
int currentStringBegin = m_leftGraphMargin + m_cursorPositionX
- QFontMetricsF( font() ).width( intervalStr ) / 2;
painter->drawText( currentStringBegin, contentSize().height() - 1.5 * m_fontHeight, intervalStr );
intervalStr.setNum( currentPoint.altitude(), 'f', 1 );
intervalStr += ' ' + m_axisY.unit();
if ( m_cursorPositionX + QFontMetricsF( font() ).width( intervalStr ) + m_leftGraphMargin
< m_eleGraphWidth ) {
currentStringBegin = ( m_leftGraphMargin + m_cursorPositionX + 5 + 2 );
} else {
currentStringBegin = m_leftGraphMargin + m_cursorPositionX - 5
- QFontMetricsF( font() ).width( intervalStr ) * 1.5;
}
// Make sure the text still fits into the window
while ( ypos < m_fontHeight ) {
ypos++;
}
painter->drawText( currentStringBegin, ypos + m_fontHeight / 2, intervalStr );
}
painter->restore();
}