Mask.h

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// Copyright 2024-2025 Julien Lamy, ICube, Université de Strasbourg-CNRS.
// Part of msl, distributed under the terms of the MIT license.
 
#ifndef _a4690364_ec62_4b06_aebc_5b4dc3f92f29
#define _a4690364_ec62_4b06_aebc_5b4dc3f92f29
 
#include <vector>
 
#include <boost/dynamic_bitset.hpp>
 
#include "Vector.h"
 
namespace msl
{

class Mask
{
public:
    using Point = Vector2l;
    using Shape = Vector2l;
    
    using Points = std::vector<Point>;
    
    static bool lessX(Point const & p, Point const & q) { return p[0] < q[0]; }
    
    static bool lessY(Point const & p, Point const & q) { return p[1] < q[1]; }
    
    Mask(Shape const & shape={}, bool value=true);
    
    std::size_t size() const;
    
    Shape const & shape() const;
    
    std::size_t count() const;
    
    Mask & enable(Point const & p);
    
    Mask & disable(Point const & p);
    
    bool enabled(Point const & p) const;
    
    Mask & flip();
    
    Mask & operator|=(Mask const & right);
    
    Mask & operator&=(Mask const & right);
    
    Points enabledPoints() const;
    
protected:
    Shape _shape;
    boost::dynamic_bitset<> _mask;
    
    std::size_t _index(Point const & p) const;
};

Mask operator!(Mask mask);

Mask operator&(Mask left, Mask const & right);

Mask operator|(Mask left, Mask const & right);
 
}
 
#endif // _a4690364_ec62_4b06_aebc_5b4dc3f92f29