void BasicGlCamera::updateNeighbors ( int  currentPixel )

protected

Definition at line 895 of file BasicGlCamera.cc.

References hexRadius, hexTolerance, i, neighbors, and pixelsCoords.

Referenced by assignPixelMap(), and calculatePixelsCoords().

    {
        float squaredDistance = 0;
        for (int i=0;i<currentPixel;i++)
        {
            squaredDistance = (pixelsCoords[i][0] - pixelsCoords[currentPixel][0])*
                              (pixelsCoords[i][0] - pixelsCoords[currentPixel][0]) +
                              (pixelsCoords[i][1] - pixelsCoords[currentPixel][1])*
                              (pixelsCoords[i][1] - pixelsCoords[currentPixel][1]);
            if (squaredDistance < 4*hexRadius*hexRadius*(1.0f+hexTolerance))//neighbor !
            {//ok, but which one ?
                if (fabs(pixelsCoords[i][0] - pixelsCoords[currentPixel][0]) < hexTolerance &&
                    pixelsCoords[i][1] < pixelsCoords[currentPixel][1]){//top
                    neighbors[i][0] = currentPixel;
                    neighbors[currentPixel][3] = i;
                    continue;}
                if (fabs(pixelsCoords[i][0] - pixelsCoords[currentPixel][0]) < hexTolerance &&
                    pixelsCoords[i][1] > pixelsCoords[currentPixel][1]){//bottom
                    neighbors[i][3] = currentPixel;
                    neighbors[currentPixel][0] = i;
                    continue;}
                if (pixelsCoords[i][0] > pixelsCoords[currentPixel][0] &&
                    pixelsCoords[i][1] > pixelsCoords[currentPixel][1]){//top right
                    neighbors[i][4] = currentPixel;
                    neighbors[currentPixel][1] = i;
                    continue;}
                if (pixelsCoords[i][0] > pixelsCoords[currentPixel][0] &&
                    pixelsCoords[i][1] < pixelsCoords[currentPixel][1]){//bottom right
                    neighbors[i][5] = currentPixel;
                    neighbors[currentPixel][2] = i;
                    continue;}
                if (pixelsCoords[i][0] < pixelsCoords[currentPixel][0] &&
                    pixelsCoords[i][1] > pixelsCoords[currentPixel][1]){//top left
                    neighbors[i][2] = currentPixel;
                    neighbors[currentPixel][5] = i;
                    continue;}
                if (pixelsCoords[i][0] < pixelsCoords[currentPixel][0] &&
                    pixelsCoords[i][1] < pixelsCoords[currentPixel][1]){//bottom left
                    neighbors[i][1] = currentPixel;
                    neighbors[currentPixel][4] = i;
                    continue;}
            }
        }
    }

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