File indexing completed on 2024-04-21 14:46:58

 /*
     SPDX-FileCopyrightText: 2015-2017 Pavel Mraz
 
     SPDX-FileCopyrightText: 2017 Jasem Mutlaq
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "polarishourangle.h"
 
 #include "skyobject.h"
 #include "kstarsdata.h"
 #include "skymapcomposite.h"
 
 #include <QPainter>
 #include <QPen>
 
 float hbase = 24;
 float vangle = 15;
 
 PolarisHourAngle::PolarisHourAngle(QWidget *parent) :
   QDialog(parent),
   m_polarisHourAngle(0)
 {
   setupUi(this);
   setFixedHeight(size().height());
 
   SkyObject *polaris = KStarsData::Instance()->skyComposite()->findByName(i18nc("star name", "Polaris"));
   Q_ASSERT_X(polaris != nullptr, "PolarisHourAngle", "Unable to find Polaris!");
   m_polaris = polaris->clone();
 
   m_reticle12.reset(new QPixmap(":/images/reticle12.png"));
   m_reticle24.reset(new QPixmap(":/images/reticle24.png"));
 
   connect(dateTimeEdit, SIGNAL(dateTimeChanged(QDateTime)), this, SLOT(onTimeUpdated(QDateTime)));
   connect(currentTimeB, &QPushButton::clicked, this, [this]() { dateTimeEdit->setDateTime(KStarsData::Instance()->lt()); });
   connect(twelveHourR, SIGNAL(toggled(bool)), this, SLOT(update()));
 
   dateTimeEdit->setDateTime(KStarsData::Instance()->lt());
 }
 
 void PolarisHourAngle::paintEvent(QPaintEvent *)
 {
   QPainter p(this);
   QPointF center = frame->rect().center();
   double r1 = 175;
 
   p.setRenderHint(QPainter::Antialiasing);
   p.setRenderHint(QPainter::SmoothPixmapTransform);
 
   p.drawPixmap(frame->pos(), twelveHourR->isChecked() ? *(m_reticle12.get()) : *(m_reticle24.get()));
   p.setPen(Qt::yellow);
   p.setBrush(Qt::white);
   p.translate(frame->pos());
 
 //  double angle = (24.0 - m_polarisHourAngle) * 15.0;
   double angle = (hbase - m_polarisHourAngle) * vangle;
   p.save();
 
   p.translate(center);
   p.rotate(angle);
 
   QPolygon poly;
 
   p.setPen(QPen(Qt::red, 1, Qt::SolidLine, Qt::SquareCap, Qt::MiterJoin));
   p.setBrush(p.pen().color());
 
   poly << QPoint(0, r1);
   poly << QPoint(10, -10);
   poly << QPoint(5, -14);
   poly << QPoint(-5, -14);
   poly << QPoint(-10, -10);
   poly << QPoint(0, r1);
 
   p.drawPolygon(poly);
 
   p.restore();
 }
 
 void PolarisHourAngle::onTimeUpdated(QDateTime newDateTime)
 {
     KStarsDateTime lt(newDateTime);
     KSNumbers num(lt.djd());
     m_polaris->updateCoords(&num, false);
     dms lst = KStarsData::Instance()->geo()->GSTtoLST(lt.gst());
 /*
     m_polarisHourAngle = (lst.Degrees() - m_polaris->ra().Degrees())/15.0;
     while (m_polarisHourAngle > 24)
         m_polarisHourAngle -= 24;
     while (m_polarisHourAngle < 0)
         m_polarisHourAngle += 24;
 */
     m_polarisHourAngle = (lst.Degrees() - m_polaris->ra().Degrees())/vangle;
     while (m_polarisHourAngle > hbase)
         m_polarisHourAngle -= hbase;
     while (m_polarisHourAngle < hbase)
         m_polarisHourAngle += hbase;
 
     labelPolarisHA->setText(dms(m_polarisHourAngle*vangle).toHMSString());
     labelDate->setText(newDateTime.date().toString());
     labelTime->setText(newDateTime.time().toString());
 
     update();
 }