void update( double t )
{
osg::Vec3d pos;
GeoMath::interpolate(
_startLat.as(Units::RADIANS), _startLon.as(Units::RADIANS),
_endLat.as(Units::RADIANS), _endLon.as(Units::RADIANS),
t,
pos.y(), pos.x() );
GeoPoint geo(
_track->getMapNode()->getMapSRS(),
osg::RadiansToDegrees(pos.x()),
osg::RadiansToDegrees(pos.y()),
10000.0,
ALTMODE_ABSOLUTE);
// update the position label.
_track->setPosition(geo);
if ( g_showCoords )
{
_track->setFieldValue( FIELD_POSITION, s_format(geo) );
}
else
_track->setFieldValue( FIELD_POSITION, "" );
}
/** Builds a bunch of tracks. */
void
createTrackNodes( MapNode* mapNode, osg::Group* parent, const TrackNodeFieldSchema& schema, TrackSims& sims )
{
// load an icon to use:
osg::ref_ptr<osg::Image> srcImage = osgDB::readImageFile( ICON_URL );
osg::ref_ptr<osg::Image> image;
ImageUtils::resizeImage( srcImage.get(), ICON_SIZE, ICON_SIZE, image );
// make some tracks, choosing a random simulation for each.
Random prng;
const SpatialReference* geoSRS = mapNode->getMapSRS()->getGeographicSRS();
for( unsigned i=0; i<g_numTracks; ++i )
{
double lon0 = -180.0 + prng.next() * 360.0;
double lat0 = -80.0 + prng.next() * 160.0;
GeoPoint pos(geoSRS, lon0, lat0);
TrackNode* track = new TrackNode(mapNode, pos, image, schema);
track->setFieldValue( FIELD_NAME, Stringify() << "Track:" << i );
track->setFieldValue( FIELD_POSITION, Stringify() << s_format(pos) );
track->setFieldValue( FIELD_NUMBER, Stringify() << (1 + prng.next(9)) );
// add a priority
AnnotationData* data = new AnnotationData();
data->setPriority( float(i) );
track->setAnnotationData( data );
Decluttering::setEnabled(track->getOrCreateStateSet(), true);
parent->addChild( track );
// add a simulator for this guy
double lon1 = -180.0 + prng.next() * 360.0;
double lat1 = -80.0 + prng.next() * 160.0;
TrackSim* sim = new TrackSim();
sim->_track = track;
sim->_startLat = lat0; sim->_startLon = lon0;
sim->_endLat = lat1; sim->_endLon = lon1;
sims.push_back( sim );
}
}
TrackNode* createTrack(TrackNodeFieldSchema& schema, osg::Image* image, const std::string& name, MapNode* mapNode, const osg::Vec3d& center, double radius, double time, TrackSimVector& trackSims)
{
TrackNode* track = new TrackNode(mapNode, GeoPoint(mapNode->getMapSRS(),center,ALTMODE_ABSOLUTE), image, schema);
track->setFieldValue(TRACK_FIELD_NAME, name);
AnnotationData* data = new AnnotationData();
data->setName(name);
data->setViewpoint(osgEarth::Viewpoint(center, 0.0, -90.0, 1e5));
track->setAnnotationData( data );
trackSims.push_back(new TrackSim(track, center, radius, time, mapNode));
return track;
}