C++ KStarsData::updateNum方法代码示例

void CatalogComponent::update( KSNumbers * ) {
    if ( selected() ) {
        KStarsData *data = KStarsData::Instance();
        foreach ( SkyObject *obj, m_ObjectList ) {
            DeepSkyObject *dso  = dynamic_cast< DeepSkyObject * >( obj );
            StarObject *so = dynamic_cast< StarObject *>( obj );
            Q_ASSERT( dso || so ); // We either have stars, or deep sky objects
            if( dso ) {
                // Update the deep sky object if need be
                if ( dso->updateID != data->updateID() ) {
                    dso->updateID = data->updateID();
                    if ( dso->updateNumID != data->updateNumID() ) {
                        dso->updateCoords( data->updateNum() );

                    }
                    dso->EquatorialToHorizontal( data->lst(), data->geo()->lat() );
                }
            }
            else {
                // Do exactly the same thing for stars
                if ( so->updateID != data->updateID() ) {
                    so->updateID = data->updateID();
                    if ( so->updateNumID != data->updateNumID() ) {
                        so->updateCoords( data->updateNum() );
                    }
                    so->EquatorialToHorizontal( data->lst(), data->geo()->lat() );
                }
            }
        }
        this->updateID = data->updateID();
    }

//Reimplement draw function so that we have control over the order of
//elements, and we can add object labels
//
//The order in which components are drawn naturally determines the
//z-ordering (the layering) of the components.  Objects which
//should appear "behind" others should be drawn first.
void SkyMapComposite::draw( SkyPainter *skyp )
{
    SkyMap *map = SkyMap::Instance();
    KStarsData *data = KStarsData::Instance();

    // We delay one draw cycle before re-indexing
    // we MUST ensure CLines do not get re-indexed while we use DRAW_BUF
    // so we do it here.
    m_CLines->reindex( &m_reindexNum );
    // This queues re-indexing for the next draw cycle
    m_reindexNum = KSNumbers( data->updateNum()->julianDay() );

    // This ensures that the JIT updates are synchronized for the entire draw
    // cycle so the sky moves as a single sheet.  May not be needed.
    data->syncUpdateIDs();

    // prepare the aperture
    // FIXME_FOV: We may want to rejigger this to allow
    // wide-angle views --hdevalence
    float radius = map->projector()->fov();
    if ( radius > 180.0 )
        radius = 180.0;


    if ( m_skyMesh->inDraw() ) {
        printf("Warning: aborting concurrent SkyMapComposite::draw()\n");
        return;
    }

    m_skyMesh->inDraw( true );
    SkyPoint* focus = map->focus();
    m_skyMesh->aperture( focus, radius + 1.0, DRAW_BUF ); // divide by 2 for testing

    // create the no-precess aperture if needed
    if ( Options::showEquatorialGrid() || Options::showHorizontalGrid() || Options::showCBounds() || Options::showEquator() ) {
        m_skyMesh->index( focus, radius + 1.0, NO_PRECESS_BUF );
    }

    // clear marks from old labels and prep fonts
    m_skyLabeler->reset( map );
    m_skyLabeler->useStdFont();

    // info boxes have highest label priority
    // FIXME: REGRESSION. Labeler now know nothing about infoboxes
    // map->infoBoxes()->reserveBoxes( psky );

    if( KStars::Instance() ) {
        const QList<SkyObject*> obsList = KStarsData::Instance()->observingList()->sessionList();
        if( Options::obsListText() )
            foreach( SkyObject* obj, obsList ) {
                SkyLabeler::AddLabel( obj, SkyLabeler::RUDE_LABEL );
            }
    }

void StarComponent::draw( SkyPainter *skyp )
{
    if( !selected() )
        return;

    SkyMap *map             = SkyMap::Instance();
    const Projector *proj   = map->projector();
    KStarsData* data        = KStarsData::Instance();
    UpdateID updateID       = data->updateID();

    bool checkSlewing = ( map->isSlewing() && Options::hideOnSlew() );
    m_hideLabels = checkSlewing || !( Options::showStarMagnitudes() || Options::showStarNames() );

    //shortcuts to inform whether to draw different objects
    bool hideFaintStars = checkSlewing && Options::hideStars();
    double hideStarsMag = Options::magLimitHideStar();
    reindex( data->updateNum() );

    double lgmin = log10(MINZOOM);
    double lgmax = log10(MAXZOOM);
    double lgz   = log10(Options::zoomFactor());

    double maglim;
    m_zoomMagLimit = maglim = zoomMagnitudeLimit();

    double labelMagLim = Options::starLabelDensity() / 5.0;
    labelMagLim += ( 12.0 - labelMagLim ) * ( lgz - lgmin) / (lgmax - lgmin );
    if( labelMagLim > 8.0 )
        labelMagLim = 8.0;

    //Calculate sizeMagLim
    // Old formula:
    //    float sizeMagLim = ( 2.000 + 2.444 * Options::memUsage() / 10.0 ) * ( lgz - lgmin ) + 5.8;

    // Using the maglim to compute the sizes of stars reduces
    // discernability between brighter and fainter stars at high zoom
    // levels. To fix that, we use an "arbitrary" constant in place of
    // the variable star density.
    // Not using this formula now.
    //    float sizeMagLim = 4.444 * ( lgz - lgmin ) + 5.0;

    float sizeMagLim = zoomMagnitudeLimit();
    if( sizeMagLim > faintMagnitude() * ( 1 - 1.5/16 ) )
        sizeMagLim = faintMagnitude() * ( 1 - 1.5/16 );
    skyp->setSizeMagLimit(sizeMagLim);

    //Loop for drawing star images

    MeshIterator region(m_skyMesh, DRAW_BUF);
    magLim = maglim;

    // If we are hiding faint stars, then maglim is really the brighter of hideStarsMag and maglim
    if( hideFaintStars && maglim > hideStarsMag )
        maglim = hideStarsMag;

    m_StarBlockFactory->drawID = m_skyMesh->drawID();

    int nTrixels = 0;

    while( region.hasNext() ) {
        ++nTrixels;
        Trixel currentRegion = region.next();
        StarList* starList = m_starIndex->at( currentRegion );

        for (int i=0; i < starList->size(); ++i) {
            StarObject *curStar = starList->at( i );
            if( !curStar )
                continue;

            float mag = curStar->mag();

            // break loop if maglim is reached
            if ( mag > maglim )
                break;

            if ( curStar->updateID != updateID )
                curStar->JITupdate();

            bool drawn = skyp->drawPointSource( curStar, mag, curStar->spchar() );

            //FIXME_SKYPAINTER: find a better way to do this.
            if ( drawn && !(m_hideLabels || mag > labelMagLim) )
                addLabel( proj->toScreen(curStar), curStar );
        }
    }

    // Draw focusStar if not null
    if( focusStar ) {
        if ( focusStar->updateID != updateID )
            focusStar->JITupdate();
        float mag = focusStar->mag();
        skyp->drawPointSource(focusStar, mag, focusStar->spchar() );
    }

    // Now draw each of our DeepStarComponents
    for( int i =0; i < m_DeepStarComponents.size(); ++i ) {
        m_DeepStarComponents.at( i )->draw( skyp );
    }
}