GeoLocator*
SpatialReference::createLocator(double xmin, double ymin, double xmax, double ymax,
bool plate_carre ) const
{
if ( !_initialized )
const_cast<SpatialReference*>(this)->init();
GeoLocator* locator = new GeoLocator( GeoExtent(this, xmin, ymin, xmax, ymax) );
locator->setEllipsoidModel( (osg::EllipsoidModel*)getEllipsoid() );
locator->setCoordinateSystemType( isGeographic()? osgTerrain::Locator::GEOGRAPHIC : osgTerrain::Locator::PROJECTED );
// note: not setting the format/cs on purpose.
if ( isGeographic() && !plate_carre )
{
locator->setTransform( getTransformFromExtents(
osg::DegreesToRadians( xmin ),
osg::DegreesToRadians( ymin ),
osg::DegreesToRadians( xmax ),
osg::DegreesToRadians( ymax ) ) );
}
else
{
locator->setTransform( getTransformFromExtents( xmin, ymin, xmax, ymax ) );
}
return locator;
}
GeoLocator*
GeoLocator::getGeographicFromGeocentric( ) const
{
if (getCoordinateSystemType() == osgTerrain::Locator::GEOCENTRIC)
{
double xmin, ymin, xmax, ymax;
getDataExtent().getBounds( xmin, ymin, xmax, ymax );
GeoLocator* geographic = new GeoLocator( getDataExtent() );
geographic->setCoordinateSystemType( Locator::GEOGRAPHIC );
geographic->setTransformAsExtents( xmin, ymin, xmax, ymax);
return geographic;
}
return NULL;
}
GeoLocator*
GeoLocator::createForExtent( const GeoExtent& extent, const class MapInfo& map)
{
double xmin, ymin, xmax, ymax;
extent.getBounds( xmin, ymin, xmax, ymax );
// A locator will place the tile on the globe:
GeoLocator* locator = extent.getSRS()->createLocator(
extent.xMin(), extent.yMin(), extent.xMax(), extent.yMax(),
map.isPlateCarre() );
if ( map.isGeocentric() )
locator->setCoordinateSystemType( osgTerrain::Locator::GEOCENTRIC );
return locator;
}
GeoLocator*
CubeSpatialReference::createLocator(double xmin, double ymin, double xmax, double ymax) const
{
int face;
CubeUtils::cubeToFace( xmin, ymin, xmax, ymax, face );
GeoLocator* result = new CubeFaceLocator( face );
osg::Matrixd transform;
transform.set(
xmax-xmin, 0.0, 0.0, 0.0,
0.0, ymax-ymin, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
xmin, ymin, 0.0, 1.0);
result->setTransform( transform );
return result;
}
