Mask.h

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#ifndef MSLANG_MASK_H
#define MSLANG_MASK_H
 
#include "Utilities/MSLang.h"
#include "Utilities/MSLang/Rectangle.h"
 
namespace mslang {
    struct Mask : public Function {
        static bool parse_detail(iterator& it, const iterator& end, Function*& fun);
        virtual void print(int ident);
        virtual void apply(std::vector<std::shared_ptr<Base> >& bfuncs);
 
        std::vector<Rectangle> pixels_m;
 
    private:
        struct IntPoint {
            IntPoint(int x, int y) : x_m(x), y_m(y) {}
 
            int x_m;
            int y_m;
        };
 
        typedef std::pair<IntPoint, IntPoint> IntPixel_t;
 
        std::vector<IntPixel_t> minimizeNumberOfRectangles(
                std::vector<bool> pixels, unsigned int height, unsigned int width);
 
        std::pair<IntPoint, IntPoint> findMaximalRectangle(
                const std::vector<bool>& pixels, unsigned int height, unsigned int width) const;
 
        unsigned int computeArea(const IntPoint& ll, const IntPoint& ur) const;
 
        void updateCache(
                const std::vector<bool>& pixels, std::vector<unsigned int>& cache,
                unsigned int y) const;
    };
}  // namespace mslang
 
#endif