00fd5fbaec
Support for --carrier-abeam option, which places the aircraft at the end of a downwind opposite the FLOLS. Add launcher support for above. Add carrier display for launcher showing position relative to carrier.
148 lines
4.1 KiB
C++
148 lines
4.1 KiB
C++
// CarrierDiagram.cxx - part of GUI launcher using Qt5
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//
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// Written by Stuart Buchanan, started April 2020.
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//
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// Copyright (C) 2022 Stuart Buchanan <stuart13@gmail.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 "CarrierDiagram.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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CarrierDiagram::CarrierDiagram(QQuickItem* pr) :
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BaseDiagram(pr)
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{
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}
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void CarrierDiagram::setGeod(QmlGeod geod)
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{
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setGeod(geod.geod());
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}
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QmlGeod CarrierDiagram::geod() const
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{
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return QmlGeod(m_geod);
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}
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void CarrierDiagram::setGeod(const SGGeod &geod)
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{
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m_Carrier.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 CarrierDiagram::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 CarrierDiagram::setAbeam(bool abeam)
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{
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if (m_abeam == abeam)
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return;
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m_abeam = abeam;
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recomputeBounds(true);
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emit offsetChanged();
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}
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void CarrierDiagram::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 CarrierDiagram::paintContents(QPainter *painter)
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{
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QPointF base = project(m_geod);
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SGGeod carrierPos = m_geod;
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SGGeod aircraftPos = m_geod;
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float aircraft_heading = 0;
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if (m_offsetEnabled) {
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// We don't actually know the eventual orientation of the carrier,
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// so we place the aircraft relative to the aircraft carrier icon,
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// which has the angled flight deck at 80 degrees (e.g. just N or E)
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//
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// There are two case:
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// - On finals, which will be at -100 degrees, aircraft heading 80
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// - Abeam on a left hand circuit, so offset 0 degrees,
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// aircraft heading downwind -90 (note that this is parallel to the
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// _carrier_, not the angled flightdeck)
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float offset_heading = -100;
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aircraft_heading = 80;
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if (m_abeam) {
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offset_heading = 0;
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aircraft_heading = -90;
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}
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double d = m_offsetDistance.convertToUnit(Units::Kilometers).value * 1000;
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SGGeod offsetGeod = SGGeodesy::direct(m_geod, offset_heading, 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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} else {
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// We're at a parking position or on the catapults, so simply rotate to
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// match the carrier heading - E
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aircraft_heading = 90;
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}
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paintCarrierIcon(painter, carrierPos, 0.0);
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paintAirplaneIcon(painter, aircraftPos, aircraft_heading);
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}
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void CarrierDiagram::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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float offset_heading = m_abeam ? 0 : -100; // See above for explanation
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SGGeod offsetPos = SGGeodesy::direct(m_geod, offset_heading, d);
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extendBounds(project(offsetPos));
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}
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}
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