mirror of https://github.com/CGAL/cgal
151 lines
3.7 KiB
C++
151 lines
3.7 KiB
C++
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#ifndef CGAL_QT_TRIANGULATION_CONFLICT_ZONE
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#define CGAL_QT_TRIANGULATION_CONFLICT_ZONE
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#include <CGAL/Qt/GraphicsViewInput.h>
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#include <CGAL/Qt/Converter.h>
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#include <QGraphicsSceneMouseEvent>
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#include <QEvent>
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#include <list>
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namespace CGAL {
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namespace Qt {
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template <typename DT>
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class TriangulationConflictZone : public GraphicsViewInput
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{
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public:
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typedef typename DT::Geometric_traits K;
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typedef typename DT::Face_handle Face_handle;
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typedef typename DT::Point Point;
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TriangulationConflictZone(QGraphicsScene* s, DT * dt_, QObject* parent);
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protected:
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void localize_and_insert_point(QPointF qt_point);
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
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bool eventFilter(QObject *obj, QEvent *event);
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std::list<Face_handle> faces;
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std::list<QGraphicsPolygonItem*> qfaces;
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DT * dt;
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Converter<K> convert;
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QGraphicsScene *scene_;
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bool animate;
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Face_handle hint;
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};
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template <typename T>
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TriangulationConflictZone<T>::TriangulationConflictZone(QGraphicsScene* s,
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T * dt_,
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QObject* parent)
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: GraphicsViewInput(parent), dt(dt_), scene_(s), animate(false)
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{}
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template <typename T>
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void
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TriangulationConflictZone<T>::localize_and_insert_point(QPointF qt_point)
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{
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Point p(convert(qt_point));
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faces.clear();
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for(std::list<QGraphicsPolygonItem*>::iterator it = qfaces.begin();
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it != qfaces.end();
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++it){
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delete *it;
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}
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qfaces.clear();
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hint = dt->locate(p, hint);
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dt->find_conflicts(p, faces, hint);
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for(typename std::list<Face_handle>::iterator it = faces.begin();
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it != faces.end();
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++it){
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if(! dt->is_infinite(*it)){
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QGraphicsPolygonItem *item = new QGraphicsPolygonItem(convert(dt->triangle(*it)));
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QColor color(::Qt::blue);
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color.setAlpha(150);
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item->setBrush(color);
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scene_->addItem(item);
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qfaces.push_back(item);
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}
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}
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}
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template <typename T>
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void
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TriangulationConflictZone<T>::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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if(dt->number_of_vertices() == 0 ||
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event->modifiers() != 0 ||
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event->button() != ::Qt::LeftButton) {
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return;
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}
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hint = dt->locate(convert(event->scenePos()));
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localize_and_insert_point(event->scenePos());
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animate = true;
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}
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template <typename T>
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void
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TriangulationConflictZone<T>::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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if(animate){
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localize_and_insert_point(event->scenePos());
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}
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}
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template <typename T>
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void
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TriangulationConflictZone<T>::mouseReleaseEvent(QGraphicsSceneMouseEvent * /*event*/)
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{
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faces.clear();
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for(std::list<QGraphicsPolygonItem*>::iterator it = qfaces.begin();
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it != qfaces.end();
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++it){
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delete *it;
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}
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qfaces.clear();
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animate = false;
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}
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template <typename T>
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bool
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TriangulationConflictZone<T>::eventFilter(QObject *obj, QEvent *event)
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{
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if (event->type() == QEvent::GraphicsSceneMousePress) {
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QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
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mousePressEvent(mouseEvent);
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return true;
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} else if (event->type() == QEvent::GraphicsSceneMouseMove) {
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QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
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mouseMoveEvent(mouseEvent);
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return false; // do not eat move event!
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} else if (event->type() == QEvent::GraphicsSceneMouseRelease) {
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QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
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mouseReleaseEvent(mouseEvent);
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return true;
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} else{
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// standard event processing
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return QObject::eventFilter(obj, event);
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}
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_TRIANGULATION_CONFLICT_ZONE
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