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| function calcHexColumn(r, i) { | |
| var s = r + Math.abs(1.5 * r * r + 1.5 * r - i - 1); | |
| var a = Math.ceil(2 * r + 1.5 - Math.sqrt((2 * r + 1.5) * (2 * r + 1.5) - 2 * s)) - 1; | |
| var m = 2 * Math.floor(2 * i / (3 * r * r + 3 * r + 1)) - 1; | |
| return m * a + r; | |
| } | |
| calcHexColumn(3, 22); // 4 |
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