snapengine.h

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#ifndef SNAPENGINE_H
#define SNAPENGINE_H
 
#include <QColor>
#include <QString>
 
class OpenSWMMVisMapTool;
class SWMMModelLayer;
class QPainter;
 
class SnapEngine
{
public:
    enum class Kind { None, Node, Gage, LinkVertex, SubcatchVertex };
 
    struct Result {
        bool    snapped = false;
        double  x       = 0.0;
        double  y       = 0.0;
        Kind    kind    = Kind::None;
        QString elementName;
    };
 
    [[nodiscard]] static Result snap(const OpenSWMMVisMapTool *tool,
                                     SWMMModelLayer           *layer,
                                     double mapX, double mapY);
 
    static void paintSnapRing(QPainter                 *painter,
                               const OpenSWMMVisMapTool *tool,
                               const Result             &result,
                               const QColor             &color = QColor(255, 165, 0));
};
 
#endif // SNAPENGINE_H