static InkSketchEffect ()
{
conv = new int[5][];
for (var i = 0; i < conv.Length; ++i)
conv[i] = new int[5];
conv[0] = new int[] { -1, -1, -1, -1, -1 };
conv[1] = new int[] { -1, -1, -1, -1, -1 };
conv[2] = new int[] { -1, -1, 30, -1, -1 };
conv[3] = new int[] { -1, -1, -1, -1, -1 };
conv[4] = new int[] { -1, -1, -5, -1, -1 };
}