| --- Log opened Thu Feb 17 00:00:29 2022 |
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| 03:38 | < Pinkhair> | Anyone know a particularly good way to snap a normalized vector(or a vector in general, of course) to the closest cardinal direction? |
| 03:47 | <@macdjord> | Pinkhair: I think this would work, given a vector (x, y): (abs(x) > abs(y)) ? (x/abs(x), 0) : (0, y/abs(y) |
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| 04:42 | < Pink> | That does seem about right; I had made things harder for myself trying to do it in 3d when I really could just zero out the third dimension. |
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| 04:48 | <@macdjord> | Pink: I think the same algorithm would work in 3D as well: pick the axis with the largest magnitude, reduce it to 1 while preserving the sign, and zero the others. |
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| 04:59 | <~Vorntastic> | What are we up to |
| 05:05 | <@macdjord> | [22:38:20] <Pinkhair> Anyone know a particularly good way to snap a normalized vector(or a vector in general, of course) to the closest cardinal direction? |
| 05:05 | <@macdjord> | [22:47:36] <macdjord> Pinkhair: I think this would work, given a vector (x, y): (abs(x) > abs(y)) ? (x/abs(x), 0) : (0, y/abs(y) |
| 05:06 | <~Vorntastic> | Oh. Uh... `vec3 a = abs(v); vec3 snap = trunc(v/min(a.x,min(a.y,a.z))); |
| 05:06 | < Pinkhair> | Yeah, probably, but in this case I know that y will always be zero so I can just use the xz plane |
| 05:07 | <~Vorntastic> | Or similar for different dim counts |
| 05:08 | <~Vorntastic> | Sorry, max, not min |
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| --- Log closed Fri Feb 18 00:00:31 2022 |