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/*

    SPDX-FileCopyrightText: 2006 Jason Harris <kstarss@30doradus.org>


    SPDX-License-Identifier: GPL-2.0-or-later

*/


#include "skyline.h"


#include "kstarsdata.h"

#include "ksnumbers.h"


#include <QDebug>


SkyLine::~SkyLine()

{

    clear();

}


void SkyLine::clear()

{

    qDeleteAll(m_pList);

    m_pList.clear();

}


void SkyLine::append(SkyPoint *p)

{

    m_pList.append(new SkyPoint(*p));

}


void SkyLine::setPoint(int i, SkyPoint *p)

{

    if (i < 0 || i >= m_pList.size())

    {

        qDebug() << Q_FUNC_INFO << "SkyLine index error: no such point: " << i;

        return;

    }

    *m_pList[i] = *p;

}


dms SkyLine::angularSize(int i) const

{

    if (i < 0 || i + 1 >= m_pList.size())

    {

        qDebug() << Q_FUNC_INFO << "SkyLine index error: no such segment: " << i;

        return dms();

    }


    SkyPoint *p1  = m_pList[i];

    SkyPoint *p2  = m_pList[i + 1];

    double dalpha = p1->ra().radians() - p2->ra().radians();

    double ddelta = p1->dec().radians() - p2->dec().radians();


    double sa = sin(dalpha / 2.);

    double sd = sin(ddelta / 2.);


    double hava = sa * sa;

    double havd = sd * sd;


    double aux = havd + cos(p1->dec().radians()) * cos(p2->dec().radians()) * hava;


    dms angDist;

    angDist.setRadians(2 * fabs(asin(sqrt(aux))));


    return angDist;

}


void SkyLine::update(KStarsData *d, KSNumbers *num)

{

    foreach (SkyPoint *p, m_pList)

    {

        if (num)

            p->updateCoords(num);

        p->EquatorialToHorizontal(d->lst(), d->geo()->lat());

    }

}

KSNumbers
There are several time-dependent values used in position calculations, that are not specific to an ob...
Definition ksnumbers.h:43

KStarsData
KStarsData is the backbone of KStars.
Definition kstarsdata.h:74

SkyLine::setPoint
void setPoint(int i, SkyPoint *p)
Set point i in the SkyLine.
Definition skyline.cpp:30

SkyLine::clear
void clear()
Remove all points from list.
Definition skyline.cpp:19

SkyLine::append
void append(SkyPoint *p)
Append a segment to the list by adding a new endpoint.
Definition skyline.cpp:25

SkyLine::angularSize
dms angularSize(int i=0) const
Definition skyline.cpp:40

SkyPoint
The sky coordinates of a point in the sky.
Definition skypoint.h:45

SkyPoint::EquatorialToHorizontal
void EquatorialToHorizontal(const CachingDms *LST, const CachingDms *lat)
Determine the (Altitude, Azimuth) coordinates of the SkyPoint from its (RA, Dec) coordinates,...
Definition skypoint.cpp:77

SkyPoint::updateCoords
virtual void updateCoords(const KSNumbers *num, bool includePlanets=true, const CachingDms *lat=nullptr, const CachingDms *LST=nullptr, bool forceRecompute=false)
Determine the current coordinates (RA, Dec) from the catalog coordinates (RA0, Dec0),...
Definition skypoint.cpp:582

QList::append
void append(QList< T > &&value)

QList::clear
void clear()

QList::size
qsizetype size() const const