示例#1
0
QVariant cameraInterpolator(const QGeoCameraData &start,
                            const QGeoCameraData &end,
                            qreal progress)
{
    QGeoCameraData result = start;
    QGeoCoordinate from = start.center();
    QGeoCoordinate to = end.center();

    if (from == to) {
        if (progress < 0.5) {
            result.setCenter(from);
        } else {
            result.setCenter(to);
        }
    }
    else {
        QGeoCoordinate coordinateResult = QGeoProjection::coordinateInterpolation(from, to, progress);
        result.setCenter(coordinateResult);
    }

    double sf = 1.0 - progress;
    double ef = progress;

    result.setBearing(sf * start.bearing() + ef * end.bearing());
    result.setTilt(sf * start.tilt() + ef * end.tilt());
    result.setRoll(sf * start.roll() + ef * end.roll());
    result.setZoomLevel(sf * start.zoomLevel() + ef * end.zoomLevel());

    return QVariant::fromValue(result);
}
示例#2
0
void QGeoMapController::setCenter(const QGeoCoordinate &center)
{
    QGeoCameraData cd = map_->cameraData();

    if (center == cd.center())
        return;

    cd.setCenter(center);
    map_->setCameraData(cd);
}
示例#3
0
void QGeoMapController::setLatitude(qreal latitude)
{
    QGeoCameraData cd = map_->cameraData();

    if (latitude == cd.center().latitude())
        return;

    QGeoCoordinate coord(latitude, cd.center().longitude(), cd.center().altitude());
    cd.setCenter(coord);
    map_->setCameraData(cd);
}
示例#4
0
void QGeoMapController::pan(qreal dx, qreal dy)
{
    if (dx == 0 && dy == 0)
        return;
    QGeoCameraData cd = map_->cameraData();
    QGeoCoordinate coord = map_->itemPositionToCoordinate(
                                QDoubleVector2D(map_->width() / 2 + dx,
                                        map_->height() / 2 + dy));


    // keep altitude as it was
    coord.setAltitude(cd.center().altitude());
    if (coord.isValid()) {
        cd.setCenter(coord);
        map_->setCameraData(cd);
    }
}