duck

DebugX.Log("Interpolating unset height cells");
for (int x = 0; x < heightmapSize; ++x)
{
    for (int y = 0; y < heightmapSize; ++y)
    {
        if (!(setHeights[x, y]))
        {
            float totalWeight = 0;
            float totalHeight = 0;

            foreach (float[] knownHeight in knownHeights)
            {
                float kx = knownHeight[0];
                float ky = knownHeight[1];
                float kz = knownHeight[2];

                float xDiff = (x-kx);
                float zDiff = (z-kz);

                float distSq = xDiff*xDiff + zDiff*zDiff;

                float weight = 1;
                if (distSq > 0)
                {
                    weight = 1/distSq;
                }
            }
        }
    }
}