コード例 #1
0
EquatorialCoordinateGrid::EquatorialCoordinateGrid( SkyComposite *parent )
        : CoordinateGrid( parent, i18n("Equatorial Coordinate Grid" ) )
{
    KStarsData *data = KStarsData::Instance();

    intro();

    double eps    =   0.1;
    double minRa  =   0.0;
    double maxRa  =  23.0;
    double dRa    =   2.0;
    double minDec = -80.0;
    double maxDec =  90.0;
    double dDec   =  20.0;
    double dDec2  =   4.0;
    double dRa2   =   0.2;

    double max, dec, dec2, ra, ra2;

    LineList* lineList;

    for ( ra = minRa; ra < maxRa; ra += dRa ) {
        for ( dec = -90.0; dec < maxDec - eps; dec += dDec ) {
            lineList = new LineList();
            max = dec + dDec;
            if ( max > 90.0 ) max = 90.0;
            for ( dec2 = dec; dec2 <= max + eps; dec2 += dDec2 ) {
                SkyPoint* p = new SkyPoint( ra, dec2 );
                p->EquatorialToHorizontal( data->lst(), data->geo()->lat() );
                lineList->append( p );
            }
            appendLine( lineList );
        }
    }

    for ( dec = minDec; dec < maxDec + eps; dec += dDec ) {
        // Do not paint the line on the equator
        if ( dec < 0.1 && dec > -0.1 )
            continue;
        
        // Adjust point density
        int nPoints = int(round( fabs(cos(dec* dms::PI / 180.0)) * dRa / dRa2 ));
        if ( nPoints < 5 )
            nPoints = 5;
        double dRa3 = dRa / nPoints;

        for ( ra = minRa; ra < maxRa + eps; ra += dRa ) {
            lineList = new LineList();
            for ( ra2 = ra; ra2 <= ra + dRa + eps; ra2 += dRa3 ) {
                SkyPoint* p = new SkyPoint( ra2, dec );
                p->EquatorialToHorizontal( data->lst(), data->geo()->lat() );
                lineList->append( p );
            }
            appendLine( lineList );
        }
    }
    
    summary();
}
コード例 #2
0
ファイル: ecliptic.cpp プロジェクト: Bugsbane/kstars
Ecliptic::Ecliptic(SkyComposite *parent ) :
        LineListIndex( parent, i18n("Ecliptic") ),
        m_label( name() )
{
    KStarsData *data = KStarsData::Instance();
    KSNumbers num( data->ut().djd() );
    dms elat(0.0), elng(0.0);

    const double eps    =   0.1;
    const double minRa  =   0.0;
    const double maxRa  =  23.0;
    const double dRa    =   2.0;
    const double dRa2   =  2. / 5.;

    for(double ra = minRa; ra < maxRa; ra += dRa ) {
        LineList* lineList = new LineList();
        for(double ra2 = ra; ra2 <= ra + dRa + eps; ra2 += dRa2 ) {
            elng.setH( ra2 );
            SkyPoint* o = new SkyPoint();
            o->setFromEcliptic( num.obliquity(), elng, elat );
            o->setRA0( o->ra().Hours() );
            o->setDec0( o->dec().Degrees() );
            o->EquatorialToHorizontal( data->lst(), data->geo()->lat() );
            lineList->append( o );
        }
        appendLine( lineList );
    }
}
コード例 #3
0
ファイル: linepath.cpp プロジェクト: serghei/kde-kdesdk
void LinePath::growList(LineList &list, int by) {
    QPen pen( getLineColor(), getLineWidth() );
    for (int i = 0; i < by; i++) {
        QCanvasLine * line = new QCanvasLine( getCanvas() );
        line -> setZ( 0 );
        line -> setPen( pen );
        line -> setVisible( true );
        list.append( line );
    }
}