blocks.hpp

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#include "meshkit/regions.hpp"
#include "meshkit/detail/planmodel.hpp"
#ifndef MESHKIT_NATIVE_QUADBLOCKS_HPP
#define MESHKIT_NATIVE_QUADBLOCKS_HPP
 
#include <functional>
 
namespace meshkit::plan
{
 
struct MeshResult;
 
struct QuadBlockGrid {
    Point2 origin; 
    double pitch = 0.0;
    int cols = 0, rows = 0;
    Vector<float> h; 
 
    [[nodiscard]] bool isValid() const
    {
        return pitch > 0.0 && cols > 0 && rows > 0 && h.size() == std::ptrdiff_t(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 Vector<Vector<Point2>> &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 Box2 &, double pitch,
                                     const std::function<double(const Box2 &)> &maximumSize,
                                     const Vector<Vector<Point2>> &blockers,
                                     const std::function<bool()> &cancelled = {},
                                     std::int64_t maximumCells = 1000000);
 
Vector<QuadRegion> placeQuadBlocks(const QuadBlockGrid &grid, const QuadBlockOptions &options);
 
} // namespace meshkit::plan
 
#endif // MESHKIT_NATIVE_QUADBLOCKS_HPP