本文整理汇总了C++中GeoDataCoordinates::moveByBearing方法的典型用法代码示例。如果您正苦于以下问题：C++ GeoDataCoordinates::moveByBearing方法的具体用法？C++ GeoDataCoordinates::moveByBearing怎么用？C++ GeoDataCoordinates::moveByBearing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::moveByBearing方法的1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: drawSegments
void MeasureToolPlugin::drawSegments( GeoPainter* painter )
{
for ( int segmentIndex = 0; segmentIndex < m_measureLineString.size() - 1; ++segmentIndex ) {
GeoDataLineString segment( Tessellate );
segment << m_measureLineString[segmentIndex] ;
segment << m_measureLineString[segmentIndex + 1];
QPen shadowPen( Oxygen::aluminumGray5 );
shadowPen.setWidthF(4.0);
painter->setPen( shadowPen );
painter->drawPolyline( segment );
QString infoString;
if ( (m_paintMode == Polygon && m_showDistanceLabel)
|| (m_paintMode == Circular && m_showRadius) ) {
const qreal segmentLength = segment.length( marbleModel()->planet()->radius() );
m_radius = segmentLength;
infoString = meterToPreferredUnit(segmentLength);
}
if ( m_showBearingLabel && m_paintMode != Circular ) {
GeoDataCoordinates coordinates = segment.first();
qreal bearing = coordinates.bearing( segment.last(), GeoDataCoordinates::Degree );
if ( bearing < 0 ) {
bearing += 360;
}
QString bearingString = QString::fromUtf8( "%1°" ).arg( bearing, 0, 'f', 2 );
if ( !infoString.isEmpty() ) {
infoString.append( "\n" );
}
infoString.append( bearingString );
}
if ( m_showBearingChangeLabel && segmentIndex != 0 ) {
GeoDataCoordinates currentCoordinates = m_measureLineString[segmentIndex];
qreal currentBearing = currentCoordinates.bearing(m_measureLineString[segmentIndex+1]);
qreal previousBearing = currentCoordinates.bearing( m_measureLineString[segmentIndex-1]);
GeoDataLinearRing ring;
painter->setPen( Qt::NoPen );
painter->setBrush( QBrush ( QColor ( 127, 127, 127, 127 ) ) );
if (currentBearing < previousBearing) currentBearing += 2 * M_PI;
ring << currentCoordinates;
qreal angleLength = qAbs(m_latLonAltBox.north() - m_latLonAltBox.south()) / 20;
qreal iterBearing = previousBearing;
while ( iterBearing < currentBearing ) {
ring << currentCoordinates.moveByBearing( iterBearing, angleLength );;
iterBearing += 0.1;
}
ring << currentCoordinates.moveByBearing( currentBearing, angleLength );;
painter->drawPolygon( ring );
qreal currentBearingChange = (currentBearing - previousBearing) * RAD2DEG;
if (currentBearingChange < 0) currentBearingChange += 360;
QString bearingChangedString = QString::fromUtf8( "%1°" ).arg( currentBearingChange, 0, 'f', 2 );
painter->setPen( Qt::black );
GeoDataCoordinates textPosition = ring.latLonAltBox().center();
qreal deltaEast = ring.latLonAltBox().east() - currentCoordinates.longitude();
qreal deltaWest = currentCoordinates.longitude() - ring.latLonAltBox().west();
if (deltaEast > deltaWest) {
textPosition.setLongitude(currentCoordinates.longitude() + deltaEast / 2);
}
else {
textPosition.setLongitude(currentCoordinates.longitude() - deltaWest);
}
painter->drawText(textPosition, bearingChangedString );
}
// Drawing ellipse around 1st point towards the 2nd
if ( m_paintMode == Circular ) {
GeoDataCoordinates currentCoordinates = m_measureLineString[segmentIndex];
GeoDataLinearRing ring;
// planetRadius - planet radius
// d - distance between points
// S - area of the painted circle
qreal planetRadius = marbleModel()->planet()->radius();
qreal d = m_measureLineString.length(1);
m_circularArea = 2 * M_PI * planetRadius * planetRadius * (1 - qCos(d));
qreal iterBearing = 0;
while ( iterBearing < 2 * M_PI ) {
ring << currentCoordinates.moveByBearing(iterBearing, d);
iterBearing += 0.1;
}
painter->setPen( Qt::NoPen );
painter->setBrush( QBrush ( QColor ( 127, 127, 127, 127 ) ) );
painter->drawPolygon(ring);
if ( m_showCircularArea ) {
//.........这里部分代码省略.........