Exemplos de GeoExtent::south em C++ (Cpp)

Exemplo n.º 1

Arquivo: VerticalDatum.cpp Projeto: speakfool/osgearth

bool
VerticalDatum::transform(const VerticalDatum* from,
                         const VerticalDatum* to,
                         const GeoExtent&     extent,
                         osg::HeightField*    hf )
{
    if ( from == to )
        return true;

    unsigned cols = hf->getNumColumns();
    unsigned rows = hf->getNumRows();
    
    osg::Vec3d sw(extent.west(), extent.south(), 0.0);
    osg::Vec3d ne(extent.east(), extent.north(), 0.0);
    
    double xstep = abs(extent.east() - extent.west()) / double(cols-1);
    double ystep = abs(extent.north() - extent.south()) / double(rows-1);

    if ( !extent.getSRS()->isGeographic() )
    {
        const SpatialReference* geoSRS = extent.getSRS()->getGeographicSRS();
        extent.getSRS()->transform(sw, geoSRS, sw);
        extent.getSRS()->transform(ne, geoSRS, ne);
        xstep = (ne.x()-sw.x()) / double(cols-1);
        ystep = (ne.y()-sw.y()) / double(rows-1);
    }

    for( unsigned c=0; c<cols; ++c)
    {
        double lon = sw.x() + xstep*double(c);
        for( unsigned r=0; r<rows; ++r)
        {
            double lat = sw.y() + ystep*double(r);
            float& h = hf->getHeight(c, r);
            if (h != NO_DATA_VALUE)
            {
                VerticalDatum::transform( from, to, lat, lon, h );
            }
        }
    }

    return true;
}