horizonitem.cpp

/*
    SPDX-FileCopyrightText: 2016 Artem Fedoskin <afedoskin3@gmail.com>
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#include "horizonitem.h"
 
#include "horizoncomponent.h"
#include "labelsitem.h"
#include "Options.h"
#include "rootnode.h"
#include "skynodes/horizonnode.h"
#include "skynodes/labelnode.h"
 
HorizonItem::HorizonItem(HorizonComponent *hComp, RootNode *rootNode)
    : SkyItem(LabelsItem::label_t::HORIZON_LABEL, rootNode), m_horizonComp(hComp)
{
    appendChildNode(new HorizonNode());
 
    double az = -0.01;
    static QString name[8];
    name[0] = i18nc("Northeast", "NE");
    name[1] = i18nc("East", "E");
    name[2] = i18nc("Southeast", "SE");
    name[3] = i18nc("South", "S");
    name[4] = i18nc("Southwest", "SW");
    name[5] = i18nc("West", "W");
    name[6] = i18nc("Northwest", "NW");
    name[7] = i18nc("North", "N");
 
    for (int i = 0; i < 8; i++)
    {
        SkyPoint *c = new SkyPoint;
 
        az += 45.0;
        c->setAz(az);
        c->setAlt(0.0);
        LabelNode *compass = rootNode->labelsItem()->addLabel(name[i], labelType());
 
        m_compassLabels.insert(c, compass);
    }
}
 
void HorizonItem::update()
{
    if (!childCount())
    {
        appendChildNode(new HorizonNode());
    }
 
    //HorizonNode *hNode = static_cast<HorizonNode *>(n->skyNodeAtIndex(0));
    QSGNode *n     = firstChild();
    SkyNode *hNode = static_cast<SkyNode *>(n);
    if (m_horizonComp->selected())
    {
        QPointF cpoint;
        bool visible;
 
        const Projector *proj = SkyMapLite::Instance()->projector();
        KStarsData *data      = KStarsData::Instance();
 
        QMap<SkyPoint *, LabelNode *>::const_iterator i = m_compassLabels.cbegin();
 
        while (i != m_compassLabels.cend())
        {
            SkyPoint *c = i.key();
            if (!Options::useAltAz())
            {
                c->HorizontalToEquatorial(data->lst(), data->geo()->lat());
            }
 
            LabelNode *compass = (*i);
            cpoint             = proj->toScreen(c, false, &visible);
            if (visible && proj->onScreen(cpoint))
            {
                compass->setLabelPos(cpoint);
            }
            else
            {
                compass->hide();
            }
            ++i;
        }
 
        hNode->update();
    }
    else
    {
        hNode->hide();
        rootNode()->labelsItem()->hideLabels(LabelsItem::label_t::HORIZON_LABEL);
    }
}