void CountryByShape::postQuestion( QObject *gameObject )
{
//Find a random placemark
Q_ASSERT_X( d->m_countryNames, "CountryByShape::postQuestion",
"CountryByShapePrivate::m_countryNames is NULL" );
QVector<GeoDataPlacemark*> countryPlacemarks = d->m_countryNames->placemarkList();
uint randomSeed = uint(QTime::currentTime().msec());
qsrand( randomSeed );
bool found = false;
GeoDataPlacemark *placemark =0;
GeoDataPoint *point = 0;
GeoDataCoordinates coord;
GeoDataLatLonAltBox box;
QVariantList answerOptions;
while ( !found ) {
int randomIndex = qrand()%countryPlacemarks.size();
placemark = countryPlacemarks[randomIndex];
point = dynamic_cast<GeoDataPoint*>( placemark->geometry() );
coord = point->coordinates();
if ( point ) {
/**
* Find the country geometry and fetch corresponding
* GeoDataLatLonAltBox to zoom in to that country so that
* it fills the viewport.
*/
Q_ASSERT_X( d->m_countryBoundaries, "CountryByShape::postQuestion",
"CountryByShapePrivate::m_countryBoundaries is NULL" );
QVector<GeoDataFeature*>::Iterator i = d->m_countryBoundaries->begin();
QVector<GeoDataFeature*>::Iterator const end = d->m_countryBoundaries->end();
for ( ; i != end; ++i ) {
GeoDataPlacemark *country = static_cast<GeoDataPlacemark*>( *i );
GeoDataPolygon *polygon = dynamic_cast<GeoDataPolygon*>( country->geometry() );
GeoDataLinearRing *linearring = dynamic_cast<GeoDataLinearRing*>( country->geometry() );
GeoDataMultiGeometry *multigeom = dynamic_cast<GeoDataMultiGeometry*>( country->geometry() );
if ( polygon &&
polygon->contains( coord ) &&
!d->m_continentsAndOceans.contains(country->name(), Qt::CaseSensitive) )
{
box = polygon->latLonAltBox();
found = true;
break;
}
if ( linearring &&
linearring->contains( coord ) &&
!d->m_continentsAndOceans.contains(country->name(), Qt::CaseSensitive) )
{
box = linearring->latLonAltBox();
found = true;
break;
}
if ( multigeom ) {
QVector<GeoDataGeometry*>::Iterator iter = multigeom->begin();
QVector<GeoDataGeometry*>::Iterator const end = multigeom->end();
for ( ; iter != end; ++iter ) {
GeoDataPolygon *poly = dynamic_cast<GeoDataPolygon*>( *iter );
if ( poly &&
poly->contains( coord ) &&
!d->m_continentsAndOceans.contains(country->name(), Qt::CaseSensitive) )
{
box = poly->latLonAltBox();
found = true;
break;
}
}
}
if ( found ) {
break;
}
}
}
}
d->m_marbleWidget->setHighlightEnabled( true );
emit announceHighlight( coord.longitude(GeoDataCoordinates::Degree),
coord.latitude(GeoDataCoordinates::Degree),
GeoDataCoordinates::Degree );
/**
* Now disable the highlight feature so that
* the user click doesn't disturbe the highlight
* we did to ask question.
*/
d->m_marbleWidget->setHighlightEnabled( false );
d->m_marbleWidget->centerOn( box, true );
answerOptions << placemark->name()
<< countryPlacemarks[qrand()%countryPlacemarks.size()]->name()
<< countryPlacemarks[qrand()%countryPlacemarks.size()]->name()
<< countryPlacemarks[qrand()%countryPlacemarks.size()]->name();
// Randomize options in list answerOptions
for ( int i = 0; i < answerOptions.size(); ++i ) {
QVariant option = answerOptions.takeAt( qrand()%answerOptions.size() );
answerOptions.append( option );
}
if ( gameObject ) {
QMetaObject::invokeMethod( gameObject, "countryByShapeQuestion",
Q_ARG(QVariant, QVariant(answerOptions)),
Q_ARG(QVariant, QVariant(placemark->name())) );
}
}
