Esempi in C++ (Cpp) per RVector::getClosest2D

Esempio n. 1

RVector RSnapEntityBase::snap(
        const RVector& position,
        RGraphicsView& view,
        const QSet<REntity::Id>& candidates,
        const RBox& queryBox) {

    RDocument* document = view.getDocument();
    if (document==NULL) {
        return lastSnap;
    }

    REntity::Id entityId;
    double minDist = RMAXDOUBLE;
    double dist;

    QSet<REntity::Id>::const_iterator it;
    for (it=candidates.begin(); it!=candidates.end(); it++) {
        // 20111112: query direct:
        //QSharedPointer<REntity> e = document->queryEntityDirect(*it);
        QSharedPointer<REntity> e = document->queryEntity(*it);
        if (e.isNull()) {
            continue;
        }

        RVector candidate =
            position.getClosest2D(
                snapEntity(e, position, queryBox, view)
            );

        dist = candidate.getDistanceTo2D(position);
        if (dist<minDist) {
            lastSnap = candidate;
            minDist = dist;
            entityId = e->getId();
        }
    }

    if (!lastSnap.isValid()) {
        lastSnap = position;
        lastSnap.valid = false;
        return lastSnap;
    }
    else {
        entityIds.insert(entityId);
        return lastSnap;
    }
}