Rasterizable.h

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#ifndef __Rasterizable_H__
#define __Rasterizable_H__

#include "Rectangle.h"

namespace EdgeDetection
{
        // This is the interface objects need to implement in order to be rasterized.
        class Rasterizable
        {
                // Gets the region of the object that should be rasterized.
                public: virtual Rectangle GetRegion() = 0;

                // Returns a value indicating whether the 'CalculateIntegral' method can be
                // used to calculate the exact value of the integral of the image function
                // over the given rectangle.
                public: virtual bool CanCalculateIntegral(Rectangle rectangle) = 0;
                // Calculates the exact value of the integral of the image function over the
                // given rectangle.
                public: virtual double CalculateIntegral(Rectangle rectangle) = 0;
                // Estimates the value of the integral of the image function over the given
                // rectangle.
                public: virtual double EstimateIntegral(Rectangle rectangle) = 0;
        };
};

#endif