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Hex math is weird. Since there are 6 directions instead of 4, there's no simple mapping between hex positions and 2D x,y coordinates. The naive approach is offset coordinates — numbering cells left-to-right, top-to-bottom like a regular grid. This works until you need to find neighbors, compute distances, or do anything involving directions. Then it gets confusing fast, with different formulas for odd and even rows.
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Виктория Кондратьева (Редактор отдела «Мир»)
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单位国内生产总值二氧化碳排放综合考虑了经济社会发展、绿色低碳转型和国家能源安全等多种需要，彰显我国坚定不移走生态优先、绿色发展之路的决心。