예제 #1
0
QList<RVector> RSnapTangential::snapEntity(
        QSharedPointer<REntity> entity,
        const RVector& point,
        const RBox& queryBox,
        RGraphicsView& view) {

    QList<RVector> ret;

    RDocumentInterface* di = view.getDocumentInterface();
    if (di==NULL) {
        return ret;
    }

    QSharedPointer<RShape> shape = entity->getClosestShape(point, queryBox.getWidth()/2, true);
    if (shape.isNull()) {
        return ret;
    }

    QSharedPointer<RCircle> circle = shape.dynamicCast<RCircle>();
    if (!circle.isNull()) {
        QList<RLine> lines = circle->getTangents(di->getLastPosition());
        for (int i=0; i<lines.length(); i++) {
            ret.append(lines[i].getEndPoint());
        }
    }

    QSharedPointer<RArc> arc = shape.dynamicCast<RArc>();
    if (!arc.isNull()) {
        QList<RLine> lines = arc->getTangents(di->getLastPosition());
        for (int i=0; i<lines.length(); i++) {
            ret.append(lines[i].getEndPoint());
        }
    }

    QSharedPointer<REllipse> ellipse = shape.dynamicCast<REllipse>();
    if (!ellipse.isNull()) {
        QList<RLine> lines = ellipse->getTangents(di->getLastPosition());
        for (int i=0; i<lines.length(); i++) {
            ret.append(lines[i].getEndPoint());
        }
    }

    return ret;
}
예제 #2
0
QList<RVector> RSnapPerpendicular::snapEntity(
        QSharedPointer<REntity> entity,
        const RVector& point,
        const RBox& queryBox,
        RGraphicsView& view) {

    QList<RVector> ret;

    RDocumentInterface* di = view.getDocumentInterface();
    if (di==NULL) {
        return ret;
    }

    QSharedPointer<RShape> shape = entity->getClosestShape(point, queryBox.getWidth()/2, true);
    if (shape.isNull()) {
        return ret;
    }

    ret.append(shape->getClosestPointOnShape(di->getLastPosition(), false));

    return ret;
}