141 lines
3.5 KiB
C++
141 lines
3.5 KiB
C++
// NavaidDiagram.cxx - part of GUI launcher using Qt5
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//
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// Written by James Turner, started October 2015.
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//
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// Copyright (C) 2014 James Turner <zakalawe@mac.com>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#include "NavaidDiagram.hxx"
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#include <limits>
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#include <QPainter>
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#include <QDebug>
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#include <QVector2D>
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#include <QMouseEvent>
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#include <Navaids/NavDataCache.hxx>
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NavaidDiagram::NavaidDiagram(QQuickItem* pr) :
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BaseDiagram(pr)
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{
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}
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void NavaidDiagram::setNavaid(qlonglong nav)
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{
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m_navaid = fgpositioned_cast<FGNavRecord>(flightgear::NavDataCache::instance()->loadById(nav));
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m_projectionCenter = m_navaid ? m_navaid->geod() : SGGeod();
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m_geod = m_projectionCenter;
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recomputeBounds(true);
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emit locationChanged();
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}
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qlonglong NavaidDiagram::navaid() const
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{
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return m_navaid->guid();
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}
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void NavaidDiagram::setGeod(QmlGeod geod)
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{
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setGeod(geod.geod());
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}
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QmlGeod NavaidDiagram::geod() const
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{
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return QmlGeod(m_geod);
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}
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void NavaidDiagram::setGeod(const SGGeod &geod)
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{
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m_navaid.clear();
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m_geod = geod;
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m_projectionCenter = m_geod;
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recomputeBounds(true);
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emit locationChanged();
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}
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void NavaidDiagram::setOffsetEnabled(bool offset)
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{
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if (m_offsetEnabled == offset)
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return;
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m_offsetEnabled = offset;
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recomputeBounds(true);
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emit offsetChanged();
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}
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void NavaidDiagram::setOffsetDistance(QuantityValue distanceNm)
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{
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if (distanceNm == m_offsetDistance)
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return;
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m_offsetDistance = distanceNm;
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update();
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emit offsetChanged();
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}
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void NavaidDiagram::setOffsetBearing(QuantityValue bearing)
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{
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m_offsetBearing = bearing;
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update();
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emit offsetChanged();
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}
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void NavaidDiagram::setHeading(QuantityValue headingDeg)
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{
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m_heading = headingDeg;
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update();
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emit offsetChanged();
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}
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void NavaidDiagram::paintContents(QPainter *painter)
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{
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QPointF base = project(m_geod);
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SGGeod aircraftPos = m_geod;
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if (m_offsetEnabled) {
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double d = m_offsetDistance.convertToUnit(Units::Kilometers).value * 1000;
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SGGeod offsetGeod = SGGeodesy::direct(m_geod, m_offsetBearing.value, d);
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QPointF offset = project(offsetGeod);
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QPen pen(Qt::green);
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pen.setCosmetic(true);
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painter->setPen(pen);
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painter->drawLine(base, offset);
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aircraftPos = offsetGeod;
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}
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paintAirplaneIcon(painter, aircraftPos, m_heading.value);
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}
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void NavaidDiagram::doComputeBounds()
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{
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extendBounds(project(m_geod));
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// project four points around the base location at 20nm to give some
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// coverage
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for (int i=0; i<4; ++i) {
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SGGeod pt = SGGeodesy::direct(m_geod, i * 90, SG_NM_TO_METER * 20.0);
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extendBounds(project(pt));
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}
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if (m_offsetEnabled) {
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double d = m_offsetDistance.convertToUnit(Units::Kilometers).value * 1000;
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SGGeod offsetPos = SGGeodesy::direct(m_geod, m_offsetBearing.value, d);
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extendBounds(project(offsetPos));
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}
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}
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