meshhoverprobe.h

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#ifndef OPENSWMMVIS_MESH_MESHHOVERPROBE_H
#define OPENSWMMVIS_MESH_MESHHOVERPROBE_H
 
#include <QElapsedTimer>
#include <QObject>
#include <QPointer>
 
class MapCanvas;
class SWMM2DMeshLayer;
 
namespace mesh {
 
class MeshHoverProbe : public QObject
{
    Q_OBJECT
public:
    explicit MeshHoverProbe(QObject *parent = nullptr);
    ~MeshHoverProbe() override;
 
    void setCanvas(MapCanvas *canvas);
    void setActiveMesh(SWMM2DMeshLayer *layer);
 
    [[nodiscard]] double lastZ()    const { return m_lastZ; }
    [[nodiscard]] bool   lastValid() const { return m_lastValid; }
 
signals:
    void elevationChanged(double z, bool finite);
 
private slots:
    void onCursor(double mapX, double mapY);
 
private:
    QPointer<MapCanvas>       m_canvas;
    QPointer<SWMM2DMeshLayer> m_mesh;
    QElapsedTimer             m_throttle;
    double                    m_lastZ      = 0.0;
    bool                      m_lastValid  = false;
};
 
} // namespace mesh
 
#endif // OPENSWMMVIS_MESH_MESHHOVERPROBE_H