Warning, file /education/kstars/kstars/ekos/align/alignview.cpp was not indexed or was modified since last indexation (in which case cross-reference links may be missing, inaccurate or erroneous).

 /*  Ekos Alignment View
     Child of AlignView with few additions necessary for Alignment functions
 
     SPDX-FileCopyrightText: 2017 Jasem Mutlaq <mutlaqja@ikarustech.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "alignview.h"
 
 #include "ekos_align_debug.h"
 #include "kstarsdata.h"
 #include <math.h>
 #include "Options.h"
 #include "fitsviewer/fitsdata.h"
 
 #include <QPainter>
 #include <QtConcurrent>
 
 AlignView::AlignView(QWidget *parent, FITSMode mode, FITSScale filter) : FITSView(parent, mode, filter)
 {
 }
 
 void AlignView::drawOverlay(QPainter *painter, double scale)
 {
     Q_UNUSED(scale);
     painter->setOpacity(0.5);
     FITSView::drawOverlay(painter, getScale());
     painter->setOpacity(1);
 
     // drawRaAxis/Triangle/StarCircle all make sure their points are valid.
     drawRaAxis(painter);
     drawTriangle(painter, correctionFrom, correctionTo, correctionAltTo);
     drawStarCircle(painter, starCircle, 35.0, Qt::yellow);
 }
 
 bool AlignView::injectWCS(double orientation, double ra, double dec, double pixscale, bool eastToTheRight, bool block)
 {
     m_ImageData->injectWCS(orientation, ra, dec, pixscale, eastToTheRight);
 
     if (block)
     {
         if (wcsWatcher.isRunning() == false && m_ImageData->getWCSState() == FITSData::Idle)
         {
             // Load WCS async
             QFuture<bool> future = QtConcurrent::run(m_ImageData.data(), &FITSData::loadWCS);
             wcsWatcher.setFuture(future);
         }
         return true;
     }
     // This should probably not be called in a UI thread when extras is true.
     return m_ImageData->loadWCS();
 }
 
 void AlignView::reset()
 {
     correctionFrom = QPointF();
     correctionTo = QPointF();
     correctionAltTo = QPointF();
     markerCrosshair = QPointF();
     celestialPolePoint = QPointF();
     raAxis = QPointF();
     starCircle = QPointF();
     releaseImage();
 }
 
 void AlignView::setCorrectionParams(const QPointF &from, const QPointF &to, const QPointF &altTo)
 {
     if (m_ImageData.isNull())
         return;
 
     correctionFrom = from;
     correctionTo = to;
     correctionAltTo = altTo;
     markerCrosshair = to;
 
     updateFrame(true);
 }
 
 void AlignView::setStarCircle(const QPointF &pixel)
 {
     starCircle = pixel;
     updateFrame(true);
 }
 
 void AlignView::drawTriangle(QPainter *painter, const QPointF &from, const QPointF &to, const QPointF &altTo)
 {
     if (from.isNull() && to.isNull() && altTo.isNull())
         return;
 
     painter->setRenderHint(QPainter::Antialiasing);
     painter->setBrush(Qt::NoBrush);
 
     const double scale = getScale();
 
     // Some of the points may be out of the image.
     painter->setPen(QPen(Qt::magenta, 2));
     painter->drawLine(from.x() * scale, from.y() * scale, to.x() * scale, to.y() * scale);
 
     painter->setPen(QPen(Qt::yellow, 3));
     painter->drawLine(from.x() * scale, from.y() * scale, altTo.x() * scale, altTo.y() * scale);
 
     painter->setPen(QPen(Qt::green, 3));
     painter->drawLine(altTo.x() * scale, altTo.y() * scale, to.x() * scale, to.y() * scale);
 
     // In limited memory mode, WCS data is not loaded so no Equatorial Gridlines are drawn
     // so we have to at least draw the NCP/SCP locations
     //    if (Options::limitedResourcesMode() && !celestialPolePoint.isNull()
     //            && m_ImageData->contains(celestialPolePoint))
     //    {
     //        QPen pen;
     //        pen.setWidth(2);
     //        pen.setColor(Qt::darkRed);
     //        painter->setPen(pen);
     //        double x  = celestialPolePoint.x() * scale;
     //        double y  = celestialPolePoint.y() * scale;
     //        double sr = 3 * scale;
 
     //        if (KStarsData::Instance()->geo()->lat()->Degrees() > 0)
     //            painter->drawText(x + sr, y + sr, i18nc("North Celestial Pole", "NCP"));
     //        else
     //            painter->drawText(x + sr, y + sr, i18nc("South Celestial Pole", "SCP"));
     //    }
 }
 
 void AlignView::drawStarCircle(QPainter *painter, const QPointF &center, double radius, const QColor &color)
 {
     if (center.isNull())
         return;
 
     painter->setRenderHint(QPainter::Antialiasing);
     painter->setBrush(Qt::NoBrush);
 
     const double scale = getScale();
     QPointF pt(center.x() * scale, center.y() * scale);
 
     // Could get fancy and change from yellow to green when closer to the green line.
     painter->setPen(QPen(color, 1));
     painter->drawEllipse(pt, radius, radius);
 }
 
 void AlignView::drawRaAxis(QPainter *painter)
 {
     if (raAxis.isNull() || !m_ImageData->contains(raAxis))
         return;
 
     QPen pen(Qt::green);
     pen.setWidth(2);
     pen.setStyle(Qt::DashLine);
     painter->setPen(pen);
     painter->setBrush(Qt::NoBrush);
 
     const double scale = getScale();
     const QPointF center(raAxis.x() * scale, raAxis.y() * scale);
 
     // Big Radius
     const double r = 200 * scale;
 
     // Small radius
     const double sr = r / 25.0;
 
     painter->drawEllipse(center, sr, sr);
     painter->drawEllipse(center, r, r);
     pen.setColor(Qt::darkGreen);
     painter->setPen(pen);
     painter->drawText(center.x() + sr, center.y() + sr, i18n("RA Axis"));
 }
 
 void AlignView::setRaAxis(const QPointF &value)
 {
     raAxis = value;
     updateFrame(true);
 }
 
 void AlignView::setCelestialPole(const QPointF &value)
 {
     celestialPolePoint = value;
     updateFrame(true);
 }
 
 void AlignView::setRefreshEnabled(bool enable)
 {
     if (enable)
         setCursorMode(crosshairCursor);
     else
         setCursorMode(selectCursor);
 }
 
 void AlignView::processMarkerSelection(int x, int y)
 {
     Q_UNUSED(x)
     Q_UNUSED(y)
 }
 
 void AlignView::holdOnToImage()
 {
     keptImagePointer = m_ImageData;
 }
 
 void AlignView::releaseImage()
 {
     keptImagePointer.reset();
 }