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Diffstat (limited to 'src/positioningquick/qquickgeocoordinateanimation.cpp')
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1 files changed, 297 insertions, 0 deletions
diff --git a/src/positioningquick/qquickgeocoordinateanimation.cpp b/src/positioningquick/qquickgeocoordinateanimation.cpp new file mode 100644 index 00000000..b00f187d --- /dev/null +++ b/src/positioningquick/qquickgeocoordinateanimation.cpp @@ -0,0 +1,297 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtPositioning module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickgeocoordinateanimation_p.h" +#include "qquickgeocoordinateanimation_p_p.h" +#include <QtQuick/private/qquickanimation_p_p.h> +#include <QtPositioning/private/qdoublevector2d_p.h> +#include <QtPositioning/private/qwebmercator_p.h> +#include <QtPositioning/private/qgeocoordinate_p.h> + +QT_BEGIN_NAMESPACE + +/*! + \qmltype CoordinateAnimation + \instantiates QQuickGeoCoordinateAnimation + \inherits PropertyAnimation + \inqmlmodule QtPositioning + \since 5.3 + + \brief A PropertyAnimation for geo coordinate properties. + + A specialized \l{PropertyAnimation} that defines an animation + between two \l{coordinate}{coordinates}. + + By default, a \l{latitude} of the \l{coordinate} is animated in the direction of shortest + (geodesic) distance between those coordinates. Since CoordinateAnimation uses Mercator + map projection, the \l{latitude} animation is always between -90 and 90 degrees. + The \l{longitude} animation path is not limited and can go over 180 degrees + in both west and east directions. + + The \l{direction} property can be set to specify the direction in which the \l{longitude} + animation should occur. + + \sa {Animation and Transitions in Qt Quick} +*/ + +QVariant q_coordinateInterpolator(const QGeoCoordinate &from, const QGeoCoordinate &to, qreal progress) +{ + if (from == to) { + if (progress < 0.5) { + return QVariant::fromValue(from); + } else { + return QVariant::fromValue(to); + } + } + + QGeoCoordinate result = QWebMercator::coordinateInterpolation(from, to, progress); + + return QVariant::fromValue(result); +} + +QVariant q_coordinateShortestInterpolator(const QGeoCoordinate &from, const QGeoCoordinate &to, qreal progress) +{ + const QGeoMercatorCoordinatePrivate* fromMercator = + static_cast<const QGeoMercatorCoordinatePrivate*>(QGeoCoordinatePrivate::get(&from)); + const QGeoMercatorCoordinatePrivate* toMercator = + static_cast<const QGeoMercatorCoordinatePrivate*>(QGeoCoordinatePrivate::get(&to)); + + double toX = toMercator->m_mercatorX; + double toY = toMercator->m_mercatorY; + double fromX = fromMercator->m_mercatorX; + double fromY = fromMercator->m_mercatorY; + double x; + if (0.5 < qAbs(toX - fromX)) { + // handle dateline crossing + double ex = toX; + double sx = fromX; + if (ex < sx) + sx -= 1.0; + else if (sx < ex) + ex -= 1.0; + + x = fromX + (toX - fromX) * progress; + + if (x < 0.0) + x += 1.0; + + } else { + x = fromX + (toX - fromX) * progress; + } + + double y = fromY + (toY - fromY) * progress; + + QGeoCoordinate result = QWebMercator::mercatorToCoord(QDoubleVector2D(x, y)); + result.setAltitude(from.altitude() + (to.altitude() - from.altitude()) * progress); + return QVariant::fromValue(result); +} + +QVariant q_coordinateWestInterpolator(const QGeoCoordinate &from, const QGeoCoordinate &to, qreal progress) +{ + const QGeoMercatorCoordinatePrivate* fromMercator = + static_cast<const QGeoMercatorCoordinatePrivate*>(QGeoCoordinatePrivate::get(&from)); + const QGeoMercatorCoordinatePrivate* toMercator = + static_cast<const QGeoMercatorCoordinatePrivate*>(QGeoCoordinatePrivate::get(&to)); + + double toX = toMercator->m_mercatorX; + double toY = toMercator->m_mercatorY; + double fromX = fromMercator->m_mercatorX; + double fromY = fromMercator->m_mercatorY; + double diff = toX - fromX; + + while (diff < 0.0) { + toX += 1.0; + diff += 1.0; + } + + double x = fromX + (toX - fromX) * progress; + double y = fromY + (toY - fromY) * progress; + + while (x > 1.0) + x -= 1.0; + + QGeoCoordinate result = QWebMercator::mercatorToCoord(QDoubleVector2D(x, y)); + result.setAltitude(from.altitude() + (to.altitude() - from.altitude()) * progress); + + return QVariant::fromValue(result); +} + +QVariant q_coordinateEastInterpolator(const QGeoCoordinate &from, const QGeoCoordinate &to, qreal progress) +{ + const QGeoMercatorCoordinatePrivate* fromMercator = + static_cast<const QGeoMercatorCoordinatePrivate*>(QGeoCoordinatePrivate::get(&from)); + const QGeoMercatorCoordinatePrivate* toMercator = + static_cast<const QGeoMercatorCoordinatePrivate*>(QGeoCoordinatePrivate::get(&to)); + + double toX = toMercator->m_mercatorX; + double toY = toMercator->m_mercatorY; + double fromX = fromMercator->m_mercatorX; + double fromY = fromMercator->m_mercatorY; + double diff = toX - fromX; + + while (diff > 0.0) { + toX -= 1.0; + diff -= 1.0; + } + + double x = fromX + (toX - fromX) * progress; + double y = fromY + (toY - fromY) * progress; + + while (x < 0.0) + x += 1.0; + + QGeoCoordinate result = QWebMercator::mercatorToCoord(QDoubleVector2D(x, y)); + result.setAltitude(from.altitude() + (to.altitude() - from.altitude()) * progress); + + return QVariant::fromValue(result); +} + +QQuickGeoCoordinateAnimation::QQuickGeoCoordinateAnimation(QObject *parent) + : QQuickPropertyAnimation(*(new QQuickGeoCoordinateAnimationPrivate), parent) + +{ + Q_D(QQuickGeoCoordinateAnimation); + d->interpolatorType = qMetaTypeId<QGeoCoordinate>(); + d->defaultToInterpolatorType = true; + d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType); +} + +QQuickGeoCoordinateAnimation::~QQuickGeoCoordinateAnimation() +{ +} + +/*! + \qmlproperty coordinate CoordinateAnimation::from + This property holds the coordinate where the animation should begin. +*/ +QGeoCoordinate QQuickGeoCoordinateAnimation::from() const +{ + Q_D(const QQuickGeoCoordinateAnimation); + return d->from.value<QGeoCoordinate>(); +} + +void QQuickGeoCoordinateAnimation::setFrom(const QGeoCoordinate &f) +{ + QGeoMercatorCoordinatePrivate *mercator = new QGeoMercatorCoordinatePrivate(); + QDoubleVector2D fromVector = QWebMercator::coordToMercator(f); + mercator->lat = f.latitude(); + mercator->lng = f.longitude(); + mercator->alt = f.altitude(); + mercator->m_mercatorX = fromVector.x(); + mercator->m_mercatorY = fromVector.y(); + QGeoCoordinate from(*mercator); + QQuickPropertyAnimation::setFrom(QVariant::fromValue(from)); +} + +/*! + \qmlproperty coordinate CoordinateAnimation::to + This property holds the coordinate where the animation should end. +*/ +QGeoCoordinate QQuickGeoCoordinateAnimation::to() const +{ + Q_D(const QQuickGeoCoordinateAnimation); + return d->to.value<QGeoCoordinate>(); +} + +void QQuickGeoCoordinateAnimation::setTo(const QGeoCoordinate &t) +{ + QGeoMercatorCoordinatePrivate *mercator = new QGeoMercatorCoordinatePrivate(); + QDoubleVector2D toVector = QWebMercator::coordToMercator(t); + mercator->lat = t.latitude(); + mercator->lng = t.longitude(); + mercator->alt = t.altitude(); + mercator->m_mercatorX = toVector.x(); + mercator->m_mercatorY = toVector.y(); + QGeoCoordinate to(*mercator); + QQuickPropertyAnimation::setTo(QVariant::fromValue(to)); +} + +/*! + \qmlproperty enumeration CoordinateAnimation::direction + This property holds the direction of the \l{longitude} animation of the \l{coordinate}. + + Possible values are: + + \list + \li CoordinateAnimation.Shortest (default) - the longitude animation goes in the direction + that produces the shortest animation path. + \li CoordinateAnimation.West - the longitude animation always goes into western direction + and may cross the date line. + \li CoordinateAnimation.East - the longitude animation always goes into eastern direction + and may cross the date line. + \endlist + \since 5.5 +*/ + + +QQuickGeoCoordinateAnimation::Direction QQuickGeoCoordinateAnimation::direction() const +{ + Q_D(const QQuickGeoCoordinateAnimation); + return d->m_direction; +} + +void QQuickGeoCoordinateAnimation::setDirection(QQuickGeoCoordinateAnimation::Direction direction) +{ + Q_D( QQuickGeoCoordinateAnimation); + if (d->m_direction == direction) + return; + + d->m_direction = direction; + switch (direction) { + case West: + d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(reinterpret_cast<void *>(&q_coordinateWestInterpolator)); + break; + case East: + d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(reinterpret_cast<void *>(&q_coordinateEastInterpolator)); + break; + case Shortest: + default: + d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(reinterpret_cast<void *>(&q_coordinateShortestInterpolator)); + break; + } + emit directionChanged(); + +} + +QQuickGeoCoordinateAnimationPrivate::QQuickGeoCoordinateAnimationPrivate(): + m_direction(QQuickGeoCoordinateAnimation::Shortest) +{ +} + +QT_END_NAMESPACE |