float ClusterFinder::FindCluster ( int32_t  x, int32_t  y  )

inlineprivate

Definition at line 34 of file FilterLed.cc.

References i.

Referenced by FilterLed::Execute().

    {
        // if edge is touched stop finding cluster
        if (x<fX0 || x>=fX1 || y<fY0 || y>=fY1)
            return -1;

        if (fCount>fLimitingSize)
            return -2;

        // get the value
        float val = fImg[y*fW+x];

        // if its empty we have found the border of the cluster
        if (val==0)
            return 0;

        // mark the point as processed
        fImg[y*fW+x] = 0;

        fSumX += x*val; // sumx
        fSumY += y*val; // sumy
        fCount++;

        float rc[4];
        rc[0] = FindCluster(x+1, y  );
        rc[1] = FindCluster(x,   y+1);
        rc[2] = FindCluster(x-1, y  );
        rc[3] = FindCluster(x,   y-1);

        for (int i=0; i<4; i++)
        {
            if (rc[i]<0) // check if edge is touched
                return rc[i];

            val += rc[i];
        }

        return val;
    }

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