#include "edge_laplacian.h"

EdgeLaplacian::EdgeLaplacian(PNM* img) :
    Convolution(img)
{
}

EdgeLaplacian::EdgeLaplacian(PNM* img, ImageViewer* iv) :
    Convolution(img, iv)
{
}

math::matrix<float> EdgeLaplacian::getMask(int, Mode)
{
    int size = getParameter("size").toInt();
    math::matrix<float> mask(size, size);

    int center = size / 2;

    for (int i = 0; i < size; i++)
    {
        for (int j = 0; j < size; j++)
        {
            mask(i, j) = -1;
        }
    }

    // Calculate center element of mask
    mask(center, center) = pow(size, 2) - 1;

    return mask;
}