meshquadmerge.h

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#ifndef OPENSWMMVIS_MESH_MESHQUADMERGE_H
#define OPENSWMMVIS_MESH_MESHQUADMERGE_H
 
#include "mesh/meshresult.h"
 
#include <QPair>
#include <QSet>
#include <QVector>
 
namespace mesh {
 
struct QuadMergeOptions
{
    // QUAD_MESHING_REDESIGN_PLAN_2026-09-06.md §5 / P1: hard bounds tightened
    // from 45°/135° (which accepted the 60°/120° rhombus two equilateral
    // triangles form) to 60°/120°, and the ranking metric is mesh::quadScore
    // (scaled Jacobian × aspect × skew) instead of minAngle/maxAngle ×
    // minSide/maxSide, which rated a rhombus and a 2:1 rectangle equal.
    double minAngleDeg = 60.0;        
    double maxAngleDeg = 120.0;       
    double minScaledJacobian = 0.866; 
    double maxAspect   = 2.0;         
    double maxBedNonPlanarity = 0.0;
};
 
inline QPair<int, int> edgeKey(int a, int b) noexcept
{
    return a < b ? qMakePair(a, b) : qMakePair(b, a);
}
 
int mergeTrianglePairs(MeshResult &mesh, const QuadMergeOptions &opts,
                       const QSet<QPair<int, int>> &lockedEdges,
                       QVector<int> *oldToNew = nullptr);
 
} // namespace mesh
 
#endif // OPENSWMMVIS_MESH_MESHQUADMERGE_H