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I need an algorithm that will overlay a spiral on a square array. Basically, an x/y position is stored with respect to this square array, and if given an offset, the position will be moved in a clockwise spiral direction.
eg. a 3x3 square array will have the spiral pattern as:
saying the position was 2,0 then giving an offset of 3 will move it to position 5, giving it an offset of 6 will move it to position 8 etc
I've wracked my brains trying to figure this one out, and I can't seem to find any algorithms out there on the net. Any help would really be appreciated.
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