C++ SkyPoint::alt方法代码示例

void modCalcAzel::showHorCoords ( SkyPoint sp )
{

	azBox->show( sp.az() );
	elBox->show( sp.alt() );

}

void SkyObjItem::setPosition(SkyObject* so)
{
    KStarsData *data = KStarsData::Instance();
    KStarsDateTime ut = data->geo()->LTtoUT(KStarsDateTime(KDateTime::currentLocalDateTime()));
    SkyPoint sp = so->recomputeCoords(ut, data->geo());

    //check altitude of object at this time.
    sp.EquatorialToHorizontal(data->lst(), data->geo()->lat());
    double rounded_altitude = (int)(sp.alt().Degrees()/5.0)*5.0;

    m_Position = i18n("Now visible: About %1 degrees above the %2 horizon", rounded_altitude, KSUtils::toDirectionString( sp.az() ) );
}

QTime SkyObject::riseSetTime( const KStarsDateTime &dt, const GeoLocation *geo, bool rst ) {
	//this object does not rise or set; return an invalid time
	if ( checkCircumpolar(geo->lat()) )
		return QTime( 25, 0, 0 );

	//First of all, if the object is below the horizon at date/time dt, adjust the time 
	//to bring it above the horizon
	KStarsDateTime dt2 = dt;
	SkyPoint p = recomputeCoords( dt, geo );
	p.EquatorialToHorizontal( &(geo->GSTtoLST( dt.gst() )), geo->lat() );
	if ( p.alt()->Degrees() < 0.0 ) {
		if ( p.az()->Degrees() < 180.0 ) { //object has not risen yet
			dt2 = dt.addSecs( 12.*3600. );
		} else { //object has already set
			dt2 = dt.addSecs( -12.*3600. );
		}
	}
	
	return geo->UTtoLT( KStarsDateTime( dt2.date(), riseSetTimeUT( dt2, geo, rst ) ) ).time();
}

void ExportEyepieceView::render() {
    float baseWidth = m_renderChart->width();
    float baseHeight = m_renderChart->height();

    if( m_renderImage )
        m_output = QImage( int(baseWidth * 2.25), int(baseHeight), QImage::Format_ARGB32 ); // 0.25 * baseWidth gap between the images
    else
        m_output = QImage( int(baseWidth), int(baseHeight), QImage::Format_ARGB32 );

    m_output.fill( Qt::white );
    QPainter op( &m_output );
    op.drawPixmap( QPointF(0,0), *m_renderChart );
    if( m_renderImage )
        op.drawPixmap( QPointF(baseWidth * 1.25,0), *m_renderImage );

    if( m_tickConfig != 0 && Options::useAltAz() ) { // FIXME: this is very skymap-state-heavy for my happiness --asimha
        // we must draw ticks
        QImage tickOverlay( baseWidth, baseHeight, QImage::Format_ARGB32 );
        tickOverlay.fill( Qt::transparent );

        QPainter p( &tickOverlay );
        p.setPen( Qt::red ); // FIXME: Determine color depending on situation, or make it configurable
        double rEnd = 0.85 * ( baseWidth / 2.);
        double rStart = 0.8 * ( baseWidth / 2.);
        QFont font;
        font.setPixelSize( ( rEnd - rStart ) );
        p.setFont( font );

        GeoLocation *geo = KStarsData::Instance()->geo();
        double alt0 = m_sp->alt().Degrees(); // altitude when hour = 0, i.e. at m_dt (see below).
        dms northAngle0 = EyepieceField::findNorthAngle( m_sp, geo->lat() );

        for( float hour = -3.5; hour <= 3.5; hour += 0.5 ) {
            dms rotation; // rotation

            // FIXME: Code duplication : code duplicated from EyepieceField. This should really be a member of SkyPoint or something.
            SkyPoint sp = SkyPoint::timeTransformed( m_sp, m_dt, geo, hour );
            double alt = sp.alt().Degrees();
            dms northAngle = EyepieceField::findNorthAngle( &sp, geo->lat() );

            rotation = ( northAngle - northAngle0 );
            if( m_tickConfig == 2 ) {
                // Dobsonian: add additional CW rotation by altitude, but compensate for the fact that we've already rotated by alt0
                rotation = rotation - dms( ( alt - alt0 ) );
            }
            rotation = rotation.reduce();
            p.save();
            p.translate( baseWidth/2.0, baseHeight/2.0 );
            p.rotate( -( rotation.Degrees() + 90.0 ) );
            p.drawLine( QPointF( rStart, 0 ), QPointF( rEnd, 0 ) );
            QTime ct = geo->UTtoLT( m_dt.addSecs( 3600.0 * hour ) ).time();
            p.drawText( QPointF( rEnd + 0.01 * baseWidth, 0 ), QString().sprintf( "%02d:%02d", ct.hour(), ct.minute() ) );
            p.restore();
        }
        p.end();
        op.drawImage( QPointF(0,0), tickOverlay );
        if( m_renderImage ) {
            op.drawImage( QPointF(baseWidth * 1.25, 0), tickOverlay );
        }
    }
    op.end();

    m_outputDisplay->setPixmap( (QPixmap::fromImage( m_output )).scaled( m_outputDisplay->width(), m_outputDisplay->height(), Qt::KeepAspectRatio, Qt::SmoothTransformation ) );
}

//.........这里部分代码省略.........
			if (latCheckBatch->isChecked() )
				ostream << latB.toDMSString() << space;
		
		// Read Epoch and write in ostream if corresponds
	
		if(epochCheckBatch->isChecked() ) {
			epoch0B = fields[i].toDouble();
			i++;
		} else
			epoch0B = getEpoch( epochBoxBatch->text() );

		if ( allRadioBatch->isChecked() )
			ostream << epoch0B << space;
		else
			if(epochCheckBatch->isChecked() )
				ostream << epoch0B << space;

		// We make the first calculations
		KStarsDateTime dt;
		dt.setFromEpoch( epoch0B );
		jdf = KStarsDateTime(dtB,utB).djd();
		jd0 = dt.djd();

		LST = KStarsDateTime(dtB,utB).gst().Degrees() + longB.Degrees();
		
		// Equatorial coordinates are the input coords.
		if (!horInputCoords) {
		// Read RA and write in ostream if corresponds

			if(raCheckBatch->isChecked() ) {
				raB = dms::fromString( fields[i],FALSE);
				i++;
			} else
				raB = raBoxBatch->createDms(FALSE);

			if ( allRadioBatch->isChecked() )
				ostream << raB.toHMSString() << space;
			else
				if(raCheckBatch->isChecked() )
					ostream << raB.toHMSString() << space;

			// Read DEC and write in ostream if corresponds

			if(decCheckBatch->isChecked() ) {
				decB = dms::fromString( fields[i], TRUE);
				i++;
			} else
				decB = decBoxBatch->createDms();

			if ( allRadioBatch->isChecked() )
				ostream << decB.toDMSString() << space;
			else
				if(decCheckBatch->isChecked() )
					ostream << decB.toDMSString() << space;

			sp = SkyPoint (raB, decB);
			sp.apparentCoord(jd0, jdf);
			sp.EquatorialToHorizontal( &LST, &latB );
			ostream << sp.az()->toDMSString() << space << sp.alt()->toDMSString() << endl;

		// Input coords are horizontal coordinates
		
		} else {
			if(azCheckBatch->isChecked() ) {
				azB = dms::fromString( fields[i],FALSE);
				i++;
			} else
				azB = azBoxBatch->createDms();

			if ( allRadioBatch->isChecked() )
				ostream << azB.toHMSString() << space;
			else
				if(raCheckBatch->isChecked() )
					ostream << azB.toHMSString() << space;

			// Read DEC and write in ostream if corresponds

			if(elCheckBatch->isChecked() ) {
				elB = dms::fromString( fields[i], TRUE);
				i++;
			} else
				elB = decBoxBatch->createDms();

			if ( allRadioBatch->isChecked() )
				ostream << elB.toDMSString() << space;
			else
				if(elCheckBatch->isChecked() )
					ostream << elB.toDMSString() << space;

			sp.setAz(azB);
			sp.setAlt(elB);
			sp.HorizontalToEquatorial( &LST, &latB );
			ostream << sp.ra()->toHMSString() << space << sp.dec()->toDMSString() << endl;
		}

	}


	fOut.close();
}

void ObservingList::slotAddObject( SkyObject *obj, bool session, bool update ) {
    bool addToWishList=true;
    if( ! obj )
        obj = ks->map()->clickedObject();

    if( obj->name() == "star" ) {
        KMessageBox::sorry(0, i18n( "Unnamed stars are not supported in the observing lists"));
        return;
    }
        
    //First, make sure object is not already in the list
    if ( obsList().contains( obj ) ) {
        addToWishList = false;
        if( ! session ) {
            ks->statusBar()->changeItem( i18n( "%1 is already in your wishlist.", obj->name() ), 0 );
            return;
        }
    }

    if ( session && sessionList().contains( obj ) ) { 
        ks->statusBar()->changeItem( i18n( "%1 is already in the session plan.", obj->name() ), 0 );
        return;
    }
    
    QString smag = "--";
    if (  - 30.0 < obj->mag() && obj->mag() < 90.0 )
        smag = QString::number( obj->mag(), 'g', 2 ); // The lower limit to avoid display of unrealistic comet magnitudes

    SkyPoint p = obj->recomputeCoords( dt, geo );

    //Insert object in the Wish List
    if( addToWishList  ) {
        m_ObservingList.append( obj );
        m_CurrentObject = obj;
        QList<QStandardItem*> itemList;

        QString ra, dec;

        if(obj->name() == "star" ) {
            ra = obj->ra0().toHMSString();
            dec = obj->dec0().toDMSString();
        }
        else {
            ra = p.ra().toHMSString();
            dec = p.dec().toDMSString();
        }

        itemList << new QStandardItem( obj->translatedName() )
                << new QStandardItem( ra )
                << new QStandardItem( dec )
                << new QStandardItem( smag )
                << new QStandardItem( obj->typeName() );

        m_Model->appendRow( itemList );
        //Note addition in statusbar
        ks->statusBar()->changeItem( i18n( "Added %1 to observing list.", obj->name() ), 0 );
        ui->TableView->resizeColumnsToContents(); 
        if( ! update ) slotSaveList();
    }
    //Insert object in the Session List
    if( session ){
        m_SessionList.append(obj);
        dt.setTime( TimeHash.value( obj->name(), obj->transitTime( dt, geo ) ) );
        dms lst(geo->GSTtoLST( dt.gst() ));
        p.EquatorialToHorizontal( &lst, geo->lat() );
        QList<QStandardItem*> itemList;

        QString ra, dec, time = "--", alt = "--", az = "--";

        QStandardItem *BestTime = new QStandardItem();
        if(obj->name() == "star" ) {
            ra = obj->ra0().toHMSString();
            dec = obj->dec0().toDMSString();
            BestTime->setData( QString( "--" ), Qt::DisplayRole );
        }
        else {
            ra = p.ra().toHMSString();
            dec = p.dec().toDMSString();
            BestTime->setData( TimeHash.value( obj->name(), obj->transitTime( dt, geo ) ), Qt::DisplayRole );
            alt = p.alt().toDMSString();
            az = p.az().toDMSString();
        }
        // TODO: Change the rest of the parameters to their appropriate datatypes.
        itemList << new QStandardItem( obj->translatedName() )
                << new QStandardItem( ra )
                << new QStandardItem( dec )
                << new QStandardItem( smag )
                << new QStandardItem( obj->typeName() )
                << BestTime
                << new QStandardItem( alt )
                << new QStandardItem( az );

        m_Session->appendRow( itemList );
        //Adding an object should trigger the modified flag
        isModified = true;
        ui->SessionView->resizeColumnsToContents();
        //Note addition in statusbar
        ks->statusBar()->changeItem( i18n( "Added %1 to session list.", obj->name() ), 0 );
    }
    setSaveImagesButton();
//.........这里部分代码省略.........