quadblocks.h

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#ifndef OPENSWMMVIS_MESH_QUADBLOCKS_H
#define OPENSWMMVIS_MESH_QUADBLOCKS_H
 
#include "mesh/meshquadregion.h"
 
#include <QPointF>
#include <QPolygonF>
#include <QRectF>
#include <QVector>
#include <functional>
 
namespace mesh
{
 
struct MeshResult;
 
struct QuadBlockGrid {
    QPointF origin; 
    double pitch = 0.0;
    int cols = 0, rows = 0;
    QVector<float> h; 
 
    [[nodiscard]] bool isValid() const
    {
        return pitch > 0.0 && cols > 0 && rows > 0 && h.size() == qsizetype(cols) * rows;
    }
};
 
struct QuadBlockOptions {
    double minSpacing = 0.0; 
    double bandRatio = 1.3;  
    int minQuadsPerSide = 4;
    int maxBlocks = 50000;
};
 
QuadBlockGrid quadBlockGridFromMesh(const MeshResult &mesh, double pitch,
                                    const QVector<QVector<QPointF>> &blockers);
// Bounded pre-triangulation candidate grid from the immutable size field.
// No triangle pilot pass is needed. Candidates still require geometric and
// metric/terrain validation by the joint planner. Zero/unbounded targets are
// unusable. Cancellation/invalid layouts return an invalid grid.
QuadBlockGrid quadBlockGridFromField(const QRectF &,double pitch,
    const std::function<double(const QRectF &)> &maximumSize,
    const QVector<QVector<QPointF>> &blockers,
    const std::function<bool()> &cancelled = {},qint64 maximumCells = 1000000);
 
QVector<QuadRegion> placeQuadBlocks(const QuadBlockGrid &grid, const QuadBlockOptions &options);
 
} // namespace mesh
 
#endif // OPENSWMMVIS_MESH_QUADBLOCKS_H