eclipticitem.cpp

/*
    SPDX-FileCopyrightText: 2016 Artem Fedoskin <afedoskin3@gmail.com>
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#include "eclipticitem.h"
 
#include "ecliptic.h"
#include "../labelsitem.h"
#include "../rootnode.h"
#include "../skynodes/labelnode.h"
#include "../skynodes/nodes/linenode.h"
#include "../skynodes/trixelnode.h"
 
EclipticItem::EclipticItem(Ecliptic *eclipticComp, RootNode *rootNode)
    : SkyItem(LabelsItem::label_t::ECLIPTIC_LABEL, rootNode), m_eclipticComp(eclipticComp)
{
    LineListHash *trixels = eclipticComp->lineIndex();
 
    auto i = trixels->cbegin();
 
    while (i != trixels->cend())
    {
        std::shared_ptr<LineListList> linesList = *i;
 
        QList<std::shared_ptr<LineList>> addedLines;
 
        if (linesList->size())
        {
            QColor schemeColor = KStarsData::Instance()->colorScheme()->colorNamed("EclColor");
 
            for (int c = 0; c < linesList->size(); ++c)
            {
                std::shared_ptr<LineList> lines = linesList->at(c);
 
                if (!addedLines.contains(lines))
                {
                    LineNode *ln = new LineNode(lines.get(), 0, schemeColor, 1, Qt::SolidLine);
 
                    appendChildNode(ln);
                    addedLines.append(lines);
                }
            }
        }
        ++i;
    }
 
    KStarsData *data = KStarsData::Instance();
    KSNumbers num(data->ut().djd());
    dms elat(0.0), elng(0.0);
    QString label;
 
    for (int ra = 0; ra < 23; ra += 6)
    {
        elng.setH(ra);
        SkyPoint *o = new SkyPoint;
        o->setFromEcliptic(num.obliquity(), elng, elat);
        o->setRA0(o->ra());
        o->setDec0(o->dec());
        o->EquatorialToHorizontal(data->lst(), data->geo()->lat());
 
        label.setNum(o->ra().reduce().Degrees());
 
        LabelNode *compass = rootNode->labelsItem()->addLabel(label, labelType());
        m_compassLabels.insert(o, compass);
    }
}
 
void EclipticItem::update()
{
    if (m_eclipticComp->selected())
    {
        show();
        QColor schemeColor = KStarsData::Instance()->colorScheme()->colorNamed("EclColor");
 
        UpdateID updateID = KStarsData::Instance()->updateID();
 
        QSGNode *l = firstChild();
        while (l != 0)
        {
            LineNode *lines = static_cast<LineNode *>(l);
            lines->setColor(schemeColor);
            l = l->nextSibling();
 
            LineList *lineList = lines->lineList();
            if (lineList->updateID != updateID)
                m_eclipticComp->JITupdate(lineList);
 
            lines->updateGeometry();
        }
 
        const Projector *proj = SkyMapLite::Instance()->projector();
        KStarsData *data      = KStarsData::Instance();
 
        QMap<SkyPoint *, LabelNode *>::iterator i = m_compassLabels.begin();
 
        while (i != m_compassLabels.end())
        {
            SkyPoint *c = i.key();
            c->EquatorialToHorizontal(data->lst(), data->geo()->lat());
 
            LabelNode *compass = (*i);
 
            bool visible;
            QPointF cpoint = proj->toScreen(c, false, &visible);
            if (visible && proj->checkVisibility(c))
            {
                compass->setLabelPos(cpoint);
            }
            else
            {
                compass->hide();
            }
            ++i;
        }
    }
    else
    {
        hide();
    }
}