6#include "MarblePhysics.h"
9#include "MarbleAbstractPresenter.h"
10#include "GeoDataLookAt.h"
11#include "MarbleDebug.h"
12#include "GeoDataLineString.h"
20class MarblePhysicsPrivate {
22 MarbleAbstractPresenter *
const m_presenter;
24 GeoDataLookAt m_source;
26 GeoDataLookAt m_target;
34 explicit MarblePhysicsPrivate( MarbleAbstractPresenter *presenter )
35 : m_presenter( presenter ),
37 m_planetRadius( EARTH_RADIUS )
43 qreal suggestedRange(qreal t)
const
46 Q_ASSERT( 0 <= t && t <= 1.0 );
49 qreal in = m_source.range();
50 qreal out = m_target.range();
52 return in + t * (out-in);
54 else if (m_mode ==
Jump) {
55 qreal jumpDuration = m_timeline.
duration();
58 const qreal totalDistance = m_planetRadius * m_source.coordinates().sphericalDistanceTo(m_target.coordinates());
59 qreal g = qMin(m_source.range(), m_target.range());
60 qreal k = qMax(m_source.range(), m_target.range());
61 qreal d = t > 0.5 ? m_source.range() - g : m_target.range() - g;
62 qreal c = d * 2 * qAbs(t - 0.5);
63 qreal h = qMin(1000*3000.0, totalDistance / 2.0);
67 qreal a = - h / ( (qreal)( 0.25 * jumpDuration * jumpDuration ) );
68 qreal b = 2.0 * h / (qreal)( 0.5 * jumpDuration );
70 qreal x = jumpDuration * t;
71 qreal y = ( a * x + b ) * x + k - c;
76 qWarning(
"Unhandled FlyTo mode, no camera distance interpolation.");
77 return m_target.range();
83MarblePhysics::MarblePhysics( MarbleAbstractPresenter *presenter )
85 d( new MarblePhysicsPrivate( presenter ) )
87 connect( &d->m_timeline, SIGNAL(valueChanged(qreal)),
88 this, SLOT(updateProgress(qreal)) );
89 connect( &d->m_timeline, SIGNAL(finished()),
90 this, SLOT(startStillMode()) );
93MarblePhysics::~MarblePhysics()
98void MarblePhysics::flyTo(
const GeoDataLookAt &target, FlyToMode mode )
100 d->m_timeline.stop();
101 d->m_source = d->m_presenter->lookAt();
102 d->m_target = target;
103 const ViewportParams *viewport = d->m_presenter->viewport();
105 FlyToMode effectiveMode = mode;
107 bool globeHidesPoint(
false);
108 bool onScreen = viewport->screenCoordinates( target.coordinates(), x, y,
110 bool invisible = globeHidesPoint || !onScreen;
112 if (effectiveMode == Automatic)
114 bool zoom = qAbs(d->m_source.range()-target.range()) > 10;
116 if ( (invisible || zoom) ) {
117 effectiveMode =
Jump;
123 d->m_mode = effectiveMode;
125 switch(effectiveMode)
128 d->m_presenter->flyTo( target, Instant );
131 d->m_timeline.setDuration(300);
136 qreal duration = invisible ? 2000 : 1000;
137 d->m_timeline.setDuration(duration);
146 d->m_timeline.start();
149void MarblePhysics::updateProgress(qreal progress)
151 Q_ASSERT(d->m_mode != Instant);
152 Q_ASSERT(d->m_mode != Automatic);
156 d->m_presenter->flyTo( d->m_target, Instant );
161 Q_ASSERT(progress >= 0.0 && progress < 1.0);
162 const GeoDataCoordinates interpolated = d->m_source.coordinates().interpolate(d->m_target.coordinates(), progress);
163 qreal range = d->suggestedRange(progress);
165 GeoDataLookAt intermediate;
166 intermediate.setCoordinates(interpolated);
167 intermediate.setRange(range);
170 d->m_presenter->flyTo( intermediate, Instant );
173void MarblePhysics::startStillMode()
180#include "moc_MarblePhysics.cpp"
This file contains the headers for ViewportParams.
QAction * zoom(const QObject *recvr, const char *slot, QObject *parent)
Binds a QML item to a specific geodetic location in screen coordinates.
@ Automatic
A sane value is chosen automatically depending on animation settings and the action.
@ Instant
Change camera position immediately (no interpolation)
@ Linear
Linear interpolation of lon, lat and distance to ground.
@ Jump
Linear interpolation of lon and lat, distance increases towards the middle point, then decreases
@ Animation
animated view (e.g. while rotating the globe)
QFuture< ArgsType< Signal > > connect(Sender *sender, Signal signal)
void setDuration(int duration)
void setEasingCurve(const QEasingCurve &curve)